TY - CONF AB - In order to improve the anti-interference ability and diagnosis effect, this paper proposes a PV inverter fault prediction method based on Spark and PSO-FCM clustering algorithm. The method firstly adopts the t-SNE dimensionality reduction algorithm to extract the main feature vectors of PV inverter clusters and normalize them as the input of the clustering algorithm, and then adopts the PSO optimization algorithm to select the optimal initial clustering centers, and then establishes a PV inverter fault prediction model based on the FCM clustering algorithm; and finally adopts the memory-based parallel computation framework Spark to parallelize the PSO-FCM clustering algorithm Finally, the PSO-FCM clustering algorithm is parallelized using Spark, a memory-based parallel computing framework, to improve the fault prediction efficiency. The results show that the proposed PV inverter fault prediction technique can accurately predict PV inverter faults in advance, which helps to ensure the healthy and smooth operation of the equipment. AU - Li, Mengyuan AU - Yang, Huixuan AU - Xia, Qianqian AU - Yan, Peiliang AU - Duan, Yingjie AU - Wang, Guibin DO - 10.1109/ICEPET61938.2024.10627031 KW - FCM KW - inverter faults KW - parallel computing KW - particle swarm algorithm KW - spark PB - Institute of Electrical and Electronics Engineers Inc. PY - 2024 SN - 9798350352658 SP - 1566 EP - 1570 TI - Inverter fault prediction and diagnosis method based on Spark and PSO-FCM algorithm T2 - 2024 3rd International Conference on Energy, Power and Electrical Technology, ICEPET 2024 ER - TY - CONF AB - Control algorithms for grid-forming inverters play a significant role in both microgrids and grid stability. A common control approach for grid-forming inverters is the droop control, which imitates the droop characteristic of traditional generators. While the steady-state performance of this control is satisfactory, the initial start and synchronization process is challenging. The main issue is that droop-controlled inverters behave like voltage sources, meaning that connecting an inverter to a pre-existing PCC voltage requires perfect synchronization of the voltages. Improper synchronization might lead to overcurrents and consequently to the destruction of the inverter. Synchronization algorithms for grid-forming inverters already exist, but do not usually cover the influence of the inner voltage control loop. Moreover, many of these techniques require a switch between the inverter and the point of common coupling, and also an additional voltage measurement on the grid side of the switch. This paper proposes a start and synchronization process that only requires the inverter measurements and needs no additional voltage measurement on the grid side. Furthermore, the algorithm takes into account the power-related control and the inner voltage control loop, and so achieves minimal transients when starting the droop-controlled operation. AU - Stallmann, Frederik AU - Liebchen, Georg AU - Mertens, Axel DA - 2022/11// DO - 10.1109/APPEEC53445.2022.10072235 KW - Droop Control KW - Grid Synchronization KW - Grid-Forming Control KW - Inverter Control KW - Phase-Locked Loop PB - IEEE Computer Society PY - 2022 SN - 9781665467384 TI - Initial Start and Synchronization Algorithm for Droop-Controlled Inverters with Consideration of the Inner Voltage Control Loop T2 - Asia-Pacific Power and Energy Engineering Conference, APPEEC VL - 2022-November ER - TY - CONF AB - Most microgrid (MG) inverters are based on the voltage and current double loop control structure of PI to achieve control objectives, but the controller parameter setting is complex and the dynamic response speed is slow. In this paper, the predictive model control (MPC) is used to replace the traditional voltage and current double loop modulation for T-type three-level inverter to improve the dynamic response speed and parameter setting. At the same time, aiming at the complexity of online calculation of MPC algorithm of T-type three-level inverter, an optimized algorithm is proposed and the redundant vectors are eliminated in advance, the speed of MPC is increased and improve the total harmonic distortion (THD) of MG inverter output waveform. AU - Zheng, Xuemei AU - Li, Hao AU - Chen, Xin AU - Min, Zhu DO - 10.1109/IECON49645.2022.9968941 KW - fast search algorithm KW - microgrid KW - model prediction control KW - three-level inverter PB - IEEE Computer Society PY - 2022 SN - 9781665480253 TI - Three-level microgrid inverter optimization algorithm based on model prediction control T2 - IECON Proceedings (Industrial Electronics Conference) VL - 2022-October ER - TY - CONF AB - Multilevel inverters have been used in various applications alternative to 2-L inverter due to advantages like reduction in THD. Among modulation techniques, space vector modulation (SVM) is a commonly used method for multilevel inverters. Therefore many advanced implementation algorithms have been proposed by researchers with less complexity. This paper provides an idea of the implementation algorithm for three-level (3-L) space vector modulation (SVM) for N3V. This paper focuses on details analysis of an algorithm based on an equivalent two-level space vector diagram. This paper aims to generate the line voltage of 2-Level VSI and 3-Level NPCI by using 2 level and 3 level space vector modulation technique and compare THD. Simulation on 2-Level and 3-Level inverter prove the validity of the suggested algorithm. AU - Panda, Ashish AU - Dyanamina, Giribabu AU - Singh, Rishi Kumar DA - 2021/1// DO - 10.1109/SeFet48154.2021.9375668 KW - Multilevel inverter KW - Nearest three vector (N3V) KW - Neutral point clamped inverter (NPCI) KW - Space vector modulation (SVM) KW - Total harmonics distortion (THD) PB - Institute of Electrical and Electronics Engineers Inc. PY - 2021 SN - 9781728156811 TI - MATLAB Simulation of Space Vector Pulse Width Modulation for 3-level NPC Inverter and 2-level Inverter T2 - 2021 International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2021 ER - TY - JOUR AB - This research paper introduces a new topology for multilevel inverters, emphasizing the reduction of harmonic distortion and the optimization of the component count. The complexity of an inverter is determined by the number of power switches, which is significantly reduced in the presented topology, as fewer switches require fewer driver circuits. In this proposed topology, a new single-phase generalized multilevel inverter is analyzed with an equal magnitude of voltage supply. A 9-level, 11-level, or 13-level symmetrical inverter with RL load is analyzed in MATLAB/Simulink 2019b and then experimentally validated using the dSPACE-1103 controller. The experimental verification of the load voltage and current with different modulation indices is also presented. The analysis of the proposed topology concludes that the total required number of components is lower than that necessary for the classical inverter topologies, as well as for some new proposed multilevel inverters that are also compared with the proposed topology in terms of gate driver circuits, power switches, and DC sources, which thereby enhances the goodness of the proposed topology. Thus, a comparison of this inverter with the other topologies validates its acceptance. AU - Mahto, Kailash Kumar AU - Mahato, Bidyut AU - Chandan, Bikramaditya AU - Das, Durbanjali AU - Das, Priyanath AU - Fotis, Georgios AU - Vita, Vasiliki AU - Mann, Michael DA - 2024/5// DO - 10.3390/electronics13101975 IS - 10 KW - DC/AC power converters KW - multilevel inverter KW - pulse width modulation KW - total harmonic distortion (THD) PB - Multidisciplinary Digital Publishing Institute (MDPI) PY - 2024 TI - A New Symmetrical Source-Based DC/AC Converter with Experimental Verification T2 - Electronics (Switzerland) VL - 13 ER - TY - CONF AB - To eliminate harmonics from output voltage waveforms of a multilevel voltage source inverter, the pulse width modulation (PWM) technique for selective harmonic elimination (SHE) can be performed at a low switching frequency, which reduces switching losses and increases the energy conversion efficiency in medium voltage and high power applications. The SHE strategy provides the optimal output voltage by maintaining the desired fundamental voltage component while eliminating lower order harmonics. This paper presents a hybrid optimization method based on the combination of the genetic algorithm (GA) and the simulated annealing (SA) to achieve a faster and more accurate optimal solution for the harmonic elimination problem. The advantages of the proposed hybrid algorithm compared to some other optimization methods include the speed that reaches the global minimum and the acceptable convergence rate considered in the performance analysis of the inverter. Simulation results show the superiority of the proposed hybrid algorithm by comparing with either GA or SA alone. AU - Madani, Hamed AU - Hesar, Hamidreza Mosaddegh AU - Liang, Xiaodong DO - 10.1109/EPEC56903.2022.10000145 KW - Selective harmonic elimination KW - multilevel voltage source inverter KW - optimization KW - simulated annealing algorithm PB - Institute of Electrical and Electronics Engineers Inc. PY - 2022 SN - 9781665463188 SP - 13 EP - 17 TI - Selective Harmonic Elimination in Cascade H-bridge Multilevel Voltage Source Inverters Using A Hybrid Optimization Algorithm T2 - 2022 IEEE Electrical Power and Energy Conference, EPEC 2022 ER - TY - JOUR AB - Photovoltaic (PV) has become an important alternative because of the increased demand for electricity and the limited supply of traditional energy sources. Harmonic distortion (HD) on the grid-connected PV can lead to several undesirable outcomes, including overheating of connected equipment, frequent grid interruptions, reduced accuracy of electrical meters, and an increase in the required current. This manuscript proposes the novel use of the Sunflower Optimization (SFO) Algorithm in grid-connected single-stage DC–AC converter with minimizing Total HD (THD) and enhancing the efficiency of the system as its primary objective. The SFO algorithm is used to maximize the system's features and control the switched inductor boost converter. The proposed technique is then simulated using MATLAB and its performance is contrasted with other existing technologies Recurrent Neural Network (RNN), Garra-Rufa Fish Optimization-Student Psychology Optimization Algorithm (GRFO-SPOA), and Fuzzy Logic Control (FLC). The proposed method attains an efficiency of 97% with a low THD of 3.1%. The findings suggest that the proposed method outperforms the existing approaches. AU - Kuppuraj, Sudha AU - Premkumar, K. DO - 10.1080/03772063.2024.2378470 KW - Grid KW - H-bridge inverter KW - Multicarrier sinusoidal pulse width modulation KW - Photovoltaic KW - Switched inductor boost converter PB - Taylor and Francis Ltd. PY - 2024 TI - Grid-Connected Single-Stage DC–AC Converter for Solar PV Applications T2 - IETE Journal of Research VL - 70 ER - TY - JOUR AB - This paper proposes leaky least mean fourth (LLMF) algorithm for the control of five-level series connected H-bridge multilevel inverter (5L SCHB-MLI). The SCHB multilevel inverter is a popular configuration due to its wide application for high-power and medium-voltage applications. The complete system comprising the grid, load, and compensator is modeled in MATLAB/SIMULINK. Prototype hardware is also developed in the laboratory for experimental validation. The 5L SCHB inverter is connected in a single-phase power distribution system and controlled as a compensator. The voltage across both DC links of the H-bridges is regulated to almost equal value by the proposed control algorithm. The closed loop system is designed to mitigate total harmonic distortion (THD) in the source current and improve the power quality of the proposed system. The system is analyzed under the steady state and dynamic state, and the results are also verified on the hardware prototype developed in the laboratory. The proposed algorithm is also compared with conventional least means square (LMS) algorithm and notch filter algorithm on several parameters. The paper discusses a detailed simulation and hardware analysis on the control of five-level MLI topology. AU - Mittal, Sudhanshu AU - Singh, Alka AU - Chittora, Prakash DA - 2023/7// DO - 10.1002/cta.3746 IS - 1 KW - H-bridge KW - distribution system KW - harmonics KW - multilevel inverter KW - power quality PB - John Wiley and Sons Ltd PY - 2023 SP - 328 EP - 345 TI - Design and development of leaky least mean fourth control algorithm for single-phase grid-connected multilevel inverter T2 - International Journal of Circuit Theory and Applications VL - 52 ER - TY - CONF AB - This paper proposes a robust artificial neural network (ANN) model based on artificial intelligence that predicts the accumulated damage per cycle in a photovoltaic (PV) system, thus indicating their remaining operational lifetime and unreli-ability; an accurate model is paramount in the task of ensuring the reliability of power electronic systems after being exposed to varying environmental conditions and operational stresses. This study employs the thermal model of a PV system's dc-ac inverter connected to an ac grid, meticulously extracting the thermal, input power, and load data under fluctuating demands and inputs. Following this, a comprehensive analysis is enabled by interpolating a year-long dataset of each relevant signal with the results of this simulation. This process forms the foundation of deploying a Monte Carlo simulation sequence, after which a Weibull distribution is deployed to provide insights into the lifespan cycles remaining based on the accumulated damage over time and its unreliability. By leveraging this dataset, constructing an ANN capable of predicting the lifetime consumption or damage in a thermal cycle with a maximum accuracy of 78.90% is possible. The applications of this research can extend from the enhancement of maintenance schedules to real-time applications in the digital twin modeling of power electronic systems. This predictive model contributes to the ongoing efforts to improve the sustainability and reliability of power-electronic-based power systems by predicting expensive malfunctions and extending the lifetime of components critical to the power system. AU - Oviedo, Sebastian AU - Davari, Masoud AU - Zhao, Shuai AU - Blaabjerg, Frede DO - 10.1109/SoutheastCon52093.2024.10500096 KW - Artificial Neural Networks KW - DC-AC Inverter of Photovoltaic Systems KW - Mission Profile KW - Predictive Maintenance KW - Rainflow Cycle Method KW - Reliability Analysis of Power Electronic Systems KW - Thermal Modeling PB - Institute of Electrical and Electronics Engineers Inc. PY - 2024 SN - 9798350317107 SP - 598 EP - 603 TI - Artificial-Intelligence-Enabled Lifetime Estimation of Photovoltaic Systems Considering the Mission Profile of the DC-AC Inverter T2 - Conference Proceedings - IEEE SOUTHEASTCON ER - TY - JOUR AB - This paper proposes a novel multiport modular multilevel converter-based solid state transformer (MMC-SST) with a distributed control system architecture for large-scale PV integration and medium-voltage AC/DC interconnection. The distributed arrangement of PV arrays within the proposed topology enables the implementation of distributed maximum power point tracking (DMPPT), which mitigates the effects of partial shading and enhances energy harvesting from PV arrays. The symmetric design of the proposed MMC-SST eliminates the common power imbalance issue in MMC-based PV inverters. Additionally, the symmetric design of sub-MMC modules introduced in this paper makes it possible to suppress capacitor voltage ripples and differential currents effectively without the need for measuring arm currents. As a result, the proposed MMC-SST requires a smaller capacitor size, fewer current sensors, and lower isolated communications. Several case studies are conducted, and hardware-in-the-loop (HIL) simulation results are provided to validate the performance of the proposed MMC-SST and designed control system. AU - Farzamkia, Saleh AU - Zhang, Mafu AU - Zou, Huanghaohe AU - Vetrivelan, Adithyan AU - Huang, Alex Q. DA - 2024/8// DO - 10.1109/TPWRD.2024.3417807 IS - 4 KW - Distributed control system KW - MMC-SST KW - PV inverter KW - modular multilevel converter (MMC) KW - power balance KW - solid state transformer (SST) PB - Institute of Electrical and Electronics Engineers Inc. PY - 2024 SP - 2495 EP - 2506 TI - MMC Based Solid State Transformer for Large-Scale Distributed PV Integration and Medium Voltage AC/DC Interconnection T2 - IEEE Transactions on Power Delivery VL - 39 ER - TY - JOUR AB - The increase in linking photovoltaic (PV) power plants to utility grids are due to the world expansion in PV systems and its advantages of low running cost, renewable, etc. Although PV is now considered one of the main power sources in many countries, it has low efficiency. Therefore, the big issue to improve the efficiency is to enhance the interface inverters' efficiency. Different inverter topologies have been proposed to relate to the PV panels; each has advantages and disadvantages. These topologies can be classified into two-stage and single-stage (impedance network) inverters. Impedance network inverters overcome the problems of traditional inverters and seek to realize the advantages of a two-stage system and reduce the number of power conversions. However, to the authors' best knowledge, there is no comprehensive review of the applications of the impedance source inverter for the PV system, including the control techniques. Therefore, this paper reviewed the existing topologies by paying attention to four key research issues: 1) various impedance network inverters and discusses the main structures from the point of view of the PV application, 2) control techniques suitable for impedance source inverters, comparing them in terms of complexity and theoretical performance, 3) investigation into the most important control methods used to connect the inverter output current with the network voltage, and 4) Challenges and future direction. Finally, this paper is provided as a brief reference to help researchers choose the appropriate impedance source inverter topologies for their applications and the preferred control and modulation methods for this type. AU - Jamal, Ihab AU - Elmorshedy, Mahmoud F. AU - Dabour, Sherif M. AU - Rashad, Essam M. AU - Xu, Wei AU - Almakhles, Dhafer J. DA - 2022/8// DO - 10.1109/ACCESS.2022.3200681 KW - DC-AC power converters KW - inverters KW - phase control KW - pulse width modulation (PWM) converters KW - voltage-source converters PB - Institute of Electrical and Electronics Engineers Inc. PY - 2022 SP - 89101 EP - 89123 TI - A Comprehensive Review of Grid-Connected PV Systems Based on Impedance Source Inverter T2 - IEEE Access VL - 10 ER - TY - GEN AB - The efficiency of a photovoltaic installation is determined by its performance ratio (PR). This ratio depends on many parameters including orientation, inclination, shading, losses in cables, and number and performance of panels. The topology of the installation is also of great importance. Indeed, the number and location of the converter(s) can also have a significant impact on the PR. This is why choices between a central inverter, string inverters or micro-inverters must be made so as not to degrade the PR. In the scientific literature, it is stated that a photovoltaic installation equipped with a central inverter has a PR of 70–80%. For micro-inverters in theory, it should be higher. The objective of this publication is to compare the PR of installations equipped with a central inverter and string inverters with the PR of those using micro-inverters, based on a statistical study grouping together 200 private installations spread throughout metropolitan France. For a better comparison, 100 installations will use a central inverter or string inverters and 100 other installations will use micro-inverters. For each installation, the data will be averaged over the longest possible periods. AU - Lagarde, Quentin AU - Beillard, Bruno AU - Mazen, Serge AU - Denis, Marie Sandrine AU - Leylavergne, Julien DA - 2023/12// DO - 10.1016/j.jksues.2021.11.007 IS - 8 KW - Converter KW - Inverter KW - Micro-inverter KW - Performance ratio KW - Photovoltaic panels PB - King Saud University PY - 2023 SP - 531 EP - 538 TI - Performance ratio of photovoltaic installations in France: Comparison between inverters and micro-inverters T2 - Journal of King Saud University - Engineering Sciences VL - 35 ER - TY - CONF AB - With the rapid development of green energy, inverter technology has become a key technology for renewable energy. To solve the problem of low output voltage of photovoltaic panel, a two-stage topology is proposed. The front stage adopts high-frequency isolated phase-shifted full-bridge structure, which can realize soft-switching technology. The last stage is single-phase inverter structure. In order to achieve high efficiency, high quality output and improve the dynamic and static performance of the inverter system, based on the traditional double closed-loop proportional integral (PI) control, the current control loop proportional control and voltage control loop proportional integral resonance (PIR) control method are improved. The parameters are derived by small signal model, and the system is simulated and verified by experiments. The experimental results show that the system has good dynamic and static performance, and can effectively suppress resonance. AU - Meng, Fanrong AU - Liao, Qingsheng AU - Wang, Meng AU - Liu, Jinshuo DA - 2023/8// DO - 10.1109/ICMA57826.2023.10215833 KW - Phase-shifted full-bridge converter KW - high efficiency KW - proportional integral resonant controller KW - single-phase inverter PB - Institute of Electrical and Electronics Engineers Inc. PY - 2023 SN - 9798350320831 SP - 1021 EP - 1026 TI - Research on Control Method of Photovoltaic Inverter Based on PIR T2 - 2023 IEEE International Conference on Mechatronics and Automation, ICMA 2023 ER - TY - JOUR AB - Multiport converters (MPCs), which can have multiple inputs and multiple output (MIMO) ports, have been suggested to integrate a variety of sources (including storage facilities) with diversified loads, thereby guaranteeing both an effective utilization of sources and the uninterruptible supply to loads. MPCs transfer the power between those sources and (active/passive) loads concurrently/independently. The attractive features of MPCs include minimal component count, higher power conversion efficiency, haste response, higher power density, and hence better sizing, combined control point, and bidirectional and soft switching abilities. MPCs are the perfect solution in applications where complex energy distribution prevails, such as renewable energy systems (RES), hybrid electric vehicle (HEV) systems, DC power distribution systems, etc. This paper proposes a hybrid output multiport multilevel converter (HOMPMLC), which is a unique, partially isolated breed of MPC. The HOMPMLC is the multiple input and dual output (MIDO) converter, which can deliver twosome outputs (both AC and DC) from several DC sources. In the HOMPMLC, a new multilevel inverter (MLI) topology, Single stage multilevel DC-link multilevel inverter (SSMLDCMLI), is involved to synthesize a high quality AC output, which utilizes five switches for the seven level improved quality AC output, and the DC output port is accomplished with the help of a forward power converter. The working of the HOMPMLC is studied for a solar photovoltaic system in the MATLAB®Simulink R2016a simulation platform as well as in an experimental investigation involving 4 panels (Schüco MPE-340-AL-01; each 340 Watts). AU - Rajan, P. AU - Jeevananthan, S. DA - 2021/11// DO - 10.1016/j.est.2021.103436 KW - Multilevel inverters(MLI) KW - Multiport converters (MPC) KW - Photovoltaic (PV) KW - Pulse width modulation(PWM) KW - Renewable energy system (RES) KW - Single stage multilevel DC-link multilevel inverter (SSMLDCMLI) PB - Elsevier Ltd PY - 2021 TI - A new partially isolated hybrid output of multiport multilevel converter for photovoltaic based power supplies T2 - Journal of Energy Storage VL - 45 ER - TY - JOUR AB - This paper proposes a novel control strategy for a single-stage photovoltaic (PV) system consisting of two PV panels connected to the grid via a three-level neutral point clamped converter topology with an LCL filter. This control method is based on a developed 5th order model containing sum and difference terms of the voltages of the two input capacitors. This allows decoupling the issues of maximum power point tracking and power factor correction from the issue of balancing the power exchange generated by the panels, which facilitates control design and improves system performances. The control problem under consideration is dealt with using a non-linear controller composed of three loops: (i) an inner loop is developed, based on backstepping and Lyapunov approaches, to correct the power factor by forcing the grid current to be sinusoidal and in phase with the grid voltage; (ii) an outer loop is designed, using a filtered proportional-integral controller, to regulate the DC bus voltage to a climate-dependent reference; (iii) a balancing loop is designed, using a proportional-integral controller, to cope with the neutral point voltage balancing problem. The proposed controller also includes a state observer that provides on-line estimation of the network state variables that are not accessible to measurements. Another important aspect of this work is the development of a formal, complete and rigorous analysis in order to describe the performance and analyse the stability of the closed-loop system using various analytical tools, including averaging theory, Routh criteria and indirect Lyapunov stability. A simulation in MATLAB/SIMULINK environment shows, on the one hand, the efficiency and robustness of the proposed nonlinear controller against changing climatic conditions and, on the other hand, the superiority of this control strategy compared to the one based on a PI linear inner loop controller for the studied system with an L- filter and an LCL filter. AU - Mchaouar, Youssef AU - Abouelmahjoub, Youness AU - Abouloifa, Abdelmajid AU - Abouobaida, Hassan AU - Lachkar, Ibtissam AU - Giri, Fouad AU - Taghzaoui, Chaimaa AU - Elallali, Aicha AU - Guerrero, Josep M. DA - 2024/1// DO - 10.1016/j.ejcon.2023.100907 KW - Backstepping KW - MPPT KW - Neutral-point-clamped multilevel converter KW - Photovoltaic system KW - Power factor correction KW - Stability analysis PB - Elsevier Ltd PY - 2024 TI - Advanced sensorless nonlinear control and stability analysis of single-stage PV systems connected to the grid via a 3L-NPC inverter T2 - European Journal of Control VL - 75 ER - TY - JOUR AB - The single-stage grid-connected photovoltaic (PV) topology has recently drawn attention as it can reduce overall losses and installation costs. This paper presents a new control approach for single-stage grid-connected PV systems. The proposed controller is a combination of a finite control set model predictive control (FCS-MPC) and a maximum power point tracking (MPPT) algorithm, which ensures the extraction of maximum power from the PV panels and good transient performance for the output voltage and current. The disadvantages of classical MPPT algorithms in tracking the global maximum power point under fluctuating environmental conditions are avoided by including additional constraints in the cost function of the FCS-MPC. Further, the controller is tested for partial shading in PV. The performance of the proposed controller is compared with the two-stage and single-stage PV configuration with different controls and MPPT algorithms. The simulation results show that the single-stage PV system with the proposed control can effectively extract the maximum power from the PV system and maintain a stable output signal for the transient condition. Finally, experimental results according to a control hardware-in-the-loop (C-HIL) approach are presented to validate the effectiveness of the proposed algorithm. AU - Vanti, Simone AU - Bana, Prabhat Ranjan AU - D'Arco, Salvatore AU - Amin, Mohammad DA - 2022/4// DO - 10.1109/TSTE.2021.3132057 IS - 2 KW - Model predictive control (MPC) KW - maximum power point tracking (MPPT) KW - solar photovoltaic (PV) generation KW - voltage source converter (VSC) PB - Institute of Electrical and Electronics Engineers Inc. PY - 2022 SP - 791 EP - 802 TI - Single-Stage Grid-Connected PV System with Finite Control Set Model Predictive Control and an Improved Maximum Power Point Tracking T2 - IEEE Transactions on Sustainable Energy VL - 13 ER - TY - CONF AB - On account of the continuous consumption of fossil fuels and its adverse effects on the environment, the renewable sources of energy are becoming increasingly popular. Hence, solar energy is one of the most reliable solution as it is available in abundance. A typical photovoltaic system comprises of the PV array/panel, DC-DC converters and the load. DC-DC converters are the power conditioning units which perform buck or boost operations in accordance to the requirement at the output. In this paper four DC-DC converter topologies i.e SEPIC, CUK, ZETA and Landsman have been implemented with a PV array rating of 250 Watts. The simulation of these PV based system involving 4 different converter topologies has been performed in MATLAB/Simulink environment. Perturb and Observe algorithm has been implemented for derivation of maximum power from the PV array/panel. The result obtained help us to compare the performance of different topologies when MPPT is applied. AU - Yadav, Shivangi AU - Mishra, Saurabh AU - Garima DO - 10.1109/SPIN52536.2021.9565976 KW - CUK KW - Landsman KW - Observe algorithm (P&O) KW - Perturb KW - Single Ended Primary Inductor Converter (SEPIC) KW - Zeta PB - Institute of Electrical and Electronics Engineers Inc. PY - 2021 SN - 9781665435642 SP - 880 EP - 885 TI - Comparative Analysis of Non-Isolated DC-DC Converters for Solar-Photovoltaic System T2 - Proceedings of the 8th International Conference on Signal Processing and Integrated Networks, SPIN 2021 ER - TY - CONF AB - Solar power plays an important role in renewable energy generation source. The typical output voltage of PV panels is of low order, which cannot be fed to the grid. A range of converters are used for PV applications like buck, boost, buck-boost, zeta, cuk and sepic as per the required yield voltage. The output voltage generated from the PV system needs to be boosted before sending it to the inverter connected with the grid, which can be done by the help of DC-DC boost converter. In this paper, several topology of QZS converter are discussed, which are QZS with SC and ASC/SL-QZS. These converter are simulated in MATLAB Simulink with the PV array as an input source. The performance of these converter are analysed at the different temperature and irradiance. The temperature and irradiance used for the operation are 30 40 (in °C) and 500, 750 1000 (in W/m2) respectively. AU - Singh, Mayank AU - Agrawal, Seema DA - 2021/8// DO - 10.1109/ASIANCON51346.2021.9544963 KW - PV KW - QZS converter KW - switches capacitor KW - voltage lift PB - Institute of Electrical and Electronics Engineers Inc. PY - 2021 SN - 9781728185835 TI - Performance Analysis of PV system with Quasi Z-Source Switched Inductor/Capacitor Voltage Gain Converter T2 - 2021 Asian Conference on Innovation in Technology, ASIANCON 2021 ER - TY - CONF AB - The prominent role of DC - DC converters is increasing day by day in many applications like renewable energy integration, EV applications, etc. Increasing demand for electricity and depletion of non - renewable resources lead to the boom of Renewable solar Energy sources. Number of solar panels are connected for higher power applications. Numerous DC-DC converter topologies have been developed with the aim of enhancing circuit performance. Each converter has its own merits and demerits. So, it can be deployed depending upon the application. Among them, Luo converter is one of the popularly developing converter due to its high voltage gain, minimum input ripple, high power density and higher efficiency. DC load is powered from solar panel through DC - DC converter. For an AC load, inverter is also added to the circuit. To attain a better output, a controller is necessary for closed loop control operation. There are basically many controllers like P, PI, PID, etc. In this paper, Luo converter is deployed with PV array and PI controller. The performance of the circuit is analyzed using the simulation results which was obtained using the software MATLAB/SIMULINK. AU - Shanthi, T. AU - Kavitha, R. AU - Maithili, P. AU - Poojavarshini, S. AU - Sowmiya, Vaani N. AU - Saran, Dev K.G. DO - 10.1109/ICAECA56562.2023.10199640 KW - Luo Converter KW - PI controller KW - PV Array KW - Ziegler-Nichols Tuning Method PB - Institute of Electrical and Electronics Engineers Inc. PY - 2023 SN - 9798350306811 TI - Design of DC - DC Luo Converter for Solar Applications using MATLAB/SIMULINK T2 - 2nd International Conference on Advancements in Electrical, Electronics, Communication, Computing and Automation, ICAECA 2023 ER - TY - JOUR AB - In general, the electrical energy is transmitted from solar panel to the grid through a boost converter along with inverter. In recent times, single state converters (like Z-source inverters and split source inverters (SSI)) are being used for grid- connected solar systems for improving the conversion efficiency and voltage gain. Among the single stage converters, SSI has addition merits like lower device count, lower switch voltage stress, which is most suitable for solar applications. However, the solar system requires a higher voltage gain converter because of its low output voltage ratings. In this regard, voltage gain of conventional SSI is enhanced using switched inductor structures and it has presented in this paper for solar energy applications. This proposed single phase high gain switched inductor split source inverter (SISSI) has a higher voltage gain compared to the other conventional topologies. And also, SISSI has a reduced passive component count, lesser inductor size, capacitor size and improved efficiency than conventional topologies. The proposed SISSI has been implemented using MATLAB/Simulink for solar applications. And, the analysis is carried out for different irradiation changes. Also, the 100W prototype of SISSI was developed by using a DSP control board, IGBT switches. And, the proposed SISSI topology compared with existing ZSI, qZSI and SSI topologies in different aspects like voltage gain, passive component size, number of components and efficiency. Keywords—low power solar applications, switched indcutor circuit, split source inverter, Z-source converter. AU - Pinjala Mohana Kishore AU - Akhila Sabnaveesu AU - Ravikumar Bhimasingu PB - IEEE PY - 2020 SN - 9781728166643 SP - 916 EP - 916 TI - High Gain Switched Inductor Split Source Inverter for Solar Energy Applications T2 - Science and Engineering Research Board ER - TY - JOUR AB - Photovoltaic (PV) inverters have been widely used in solar energy to change the direct current (DC) voltage of PV panels to the grid alternating current (AC) voltage. They are comprised of DC-DC section for maximum power point tracking (MPPT) and DC-AC part to provide required output AC voltage. This paper provides a unique configuration that integrates both sections in one part. A Z-source multilevel inverter is proposed based on Z- source networks and reversing voltage (RV) multilevel inverter. The Z- source network can be used to increase the level of the input voltages and MPPT as well. In addition, the prop used topology uses multilevel topology to accommodate more DC inputs and benefit from features of multilevel level inverters in AC output. Moreover, using Z-source network can minimize equated monthly installment (EMI) due to the lower stress on the semiconductor switches. Finally, a seven level topology is designed and simulated to show the performance of proposed topology. AU - Najafi, Ehsan AU - Rashidi, Amir Hosein AU - Dehghan, Seyed DA - 2022/3// DO - 10.11591/ijpeds.v13.i1.pp267-274 PY - 2022 SP - 267 EP - 274 TI - Z-source reversing voltage multilevel inverter for photovoltaic applications with inherent voltage balancing T2 - International Journal of Power Electronics and Drive Systems (IJPEDS) VL - 13 ER - TY - CONF AB - This study presents design and analysis of an extendable grid-connected DC-AC n-level multilevel inverter with the minimum component count for renewable energy systems, specifically focusing on photovoltaic (PV) panel applications. The proposed topology utilizes a zeta converter based on a coat circuit to harness potential of PV panels, allowing for the extraction of multiple DC voltage levels. These multi-output DC voltages are subsequently employed to generate a multilevel AC output voltage. In addition, model predictive control (MPC) method is applied to the n-level multilevel inverter instead of complex modulation algorithms in order to provide gate signals of the switches and to secure grid connection. Proposed multilevel inverter topology not only ensures high-quality AC output but also enhances grid integration and compatibility with various renewable energy applications. Simulation studies have been implemented in MATLAB/Simulink. Through design and simulation, this paper demonstrates the robustness and effectiveness of the proposed topology, making it valuable for renewable energy systems. AU - Ortatepe, Zafer AU - Aksoz, Sinan DO - 10.1109/SGRE59715.2024.10428816 KW - Coat circuit KW - model predictive control KW - multilevel inverter KW - zeta converter PB - Institute of Electrical and Electronics Engineers Inc. PY - 2024 SN - 9798350306262 TI - An Extendable Zeta Converter Based Grid-Connected Multilevel Inverter with Model Predictive Control Method T2 - 4th International Conference on Smart Grid and Renewable Energy, SGRE 2024 - Proceedings ER - TY - CONF AB - Direct connection of PV modules to the grid using microinverters has been gaining interest due to their intrinsic modularity and increased energy harvesting potential. However, since microinverters are essentially single-phase converters, a large second harmonic current component is drawn from the PV module, thus difficulting following its maximum power point, impacting power generation capability and overall efficiency of the system. To tackle these issues, a modified single-stage quasi-Z-source microinverter topology is presented, in which the qZS impedance network is modified by magnetically coupling its inductors. It is shown through analysis and simulations that this modification has the effect of blocking most low-frequency components from the current drawn from the PV module, making it almost DC. This along with its single-stage construction, high voltage gain, and reduced component count results in a high-performance solution. AU - Palma, Leonardo DO - 10.1109/SPEEDAM53979.2022.9842120 KW - PV KW - microinverters KW - quasi-Z source converters PB - Institute of Electrical and Electronics Engineers Inc. PY - 2022 SN - 9781665484596 SP - 901 EP - 905 TI - Reduced 2ndHarmonic Input Current Ripple Quasi Z-source Microinverter for On-Grid PV Power Conversion T2 - 2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2022 ER - TY - JOUR AB - This paper introduces a B-type inverter and an improved Y source DC-DC converter that use a selective harmonic elimination (SHE) method based on whale optimization to inject power into the grid with reduced harmonic content. The suggested topology contains four unidirectional switches, two bidirectional switches and three DC sources to produce the required output voltage level. The proposed topology can be functioned with equal and unequal DC sources. The developed structure can generate the negative voltages without the use of an H-bridge. It has more redundant states, and it is partially fault tolerant in nature. The proposed structure provides a high value of level to switch ratio. A single input multiple output high gain modular Y-source DC-DC converter is implemented for effective utilization of the PV modules in the suggested system. The triggering angles for the suggested system is generated using the SHE based whale optimization algorithm (WOA). Using the SHE-WOA method a total harmonic distortion (THD) of (Formula presented.) is obtained. The developed system is integrated with the grid and for grid synchronization PI based WOA method is used. Simulation study has identified the presence of only 2.47% of harmonics in the grid current and 2.03% in experimental analysis. Both these harmonic distortions are less than the IEEE-519 standards. AU - Raj, Devesh AU - Venkatraman, Thiyagarajan AU - Balasubramanian, Muthuselvan AU - Vanaja, Dishore Shunmugham DO - 10.1080/15325008.2022.2158500 IS - 2 KW - B-type modular multilevel inverter KW - modular-Y source converter KW - selective harmonic elimination KW - total harmonic distortion (THD) KW - whale optimization algorithm PB - Taylor and Francis Ltd. PY - 2023 SP - 151 EP - 170 TI - Design and Development of a B-Type Inverter for Harmonic Mitigation in a Grid Integrated System Using Whale Optimization Algorithm T2 - Electric Power Components and Systems VL - 51 ER -