Topology Optimization Analysis of Leakage Current Suppression in Three-Level Four-Leg Photovoltaic Grid-Connected Inverter

被引:2
|
作者
Yang, Dong [1 ]
Yang, Kaiwen [1 ]
Gao, Fengyang [1 ]
机构
[1] Lanzhou Jiaotong Univ, Coll Automat & Elect Engn, Lanzhou 730000, Gansu, Peoples R China
关键词
Topology; Leakage currents; Inverters; Capacitors; Circuit topology; Voltage control; Photovoltaic systems; Three-phase four-leg inverter; three-level inverter; photovoltaic system; topology optimization; leakage current;
D O I
10.1109/ACCESS.2023.3277971
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The grid-connected non-isolated photovoltaic inverter system suffers from the leakage current, which increases the loss of the system, and the grid-connected current harmonics impact the normal operation of the equipment. To this end, first, the leakage current mechanism in a conventional three-phase three-level four-leg grid-connected inverter is analyzed and two circuit topology improvement schemes are proposed. Second, mathematical modeling of different circuit topologies is carried out. With the leakage current and the harmonic distortion rate of the grid-side current as the main suppression indicators, the advantages and disadvantages of each topology are analyzed. Finally, the optimal leakage current suppression circuit topology is proposed for the three-level four-leg grid-connected inverter. Meanwhile, the corresponding objective function and constraints are constructed to solve the problem of selecting key components parameter by non-linear programming. Without additional control strategy, the proposed optimal circuit topology has a significant leakage current suppression performance compared to the other three topologies, only 10.24% of the conventional topology, and ensures that the grid-connected current total harmonic distortion rate meets the highest relevant standards.
引用
收藏
页码:50145 / 50156
页数:12
相关论文
共 50 条
  • [41] A Novel Transformerless Photovoltaic Grid-Connected Current Source Inverter With Ground Leakage Current Elimination
    Saeidabadi, Saeid
    Gandomi, Amin Ashraf
    Hosseini, Seyed Hossein
    2017 8TH POWER ELECTRONICS, DRIVE SYSTEMS & TECHNOLOGIES CONFERENCE (PEDSTC), 2017, : 61 - 66
  • [42] Three-level three-dimensional SVM with a simplified algorithm of three-level four-leg diode-clamped inverter
    Bouzidi, M.
    Benaissa, A.
    Bouafia, S.
    Barkat, S.
    2015 4TH INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING (ICEE), 2015, : 11 - +
  • [43] Highly-Reliable Switched-Boost Four-Leg Inverter With Leakage Current Suppression
    Do, Duc-Tri
    Truong, Ngoc-Anh
    Nguyen, Khai M.
    Duong, Truong-Duy
    IEEE ACCESS, 2024, 12 : 137054 - 137062
  • [44] High-Efficiency Modulation Scheme for Three-Level Buck Four-Leg Current-Source Inverter
    Chen, Baoxuan
    Sun, Yao
    Xie, Shiming
    Liu, Yonglu
    Su, Mei
    IEEE TRANSACTIONS ON POWER ELECTRONICS, 2024, 39 (06) : 6818 - 6829
  • [45] A Three-Phase Three-Level NPC Inverter Based Grid-Connected Photovoltaic System With Active Power Filtering
    Sezen, Serkan
    Aktas, Ahmet
    Ucar, Mehmet
    Ozdemir, Engin
    2014 16TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE AND EXPOSITION (PEMC), 2014, : 1331 - 1335
  • [46] An improved transformerless grid-connected photovoltaic inverter with reduced leakage current and increasing number of output voltage level
    Zarein, Ali
    Mosallanejad, Ali
    Ghazizadeh, Mohammad Sadegh
    34TH INTERNATIONAL POWER SYSTEM CONFERENCE (PSC2019), 2019, : 327 - 332
  • [47] An improved transformerless grid-connected photovoltaic inverter with reduced leakage current and increasing number of output voltage level
    Zarein, Ali
    Mosallanejad, Ali
    Ghazizadeh, Mohammad Sadegh
    34TH INTERNATIONAL POWER SYSTEM CONFERENCE (PSC2019), 2019, : 385 - 390
  • [48] Three-Phase Transformerless Grid-Connected Photovoltaic Inverter to Reduce Leakage Currents
    Freddy, Tan Kheng Suan
    Abd Rahim, Nasrudin
    Ping, Hew Wooi
    2013 IEEE CONFERENCE ON CLEAN ENERGY AND TECHNOLOGY (CEAT), 2013, : 277 - 280
  • [49] A New Multilevel Inverter Topology for Grid-Connected Photovoltaic Systems
    Satti, Muhammad Bilal
    Hasan, Ammar
    Ahmad, Mian Ilyas
    INTERNATIONAL JOURNAL OF PHOTOENERGY, 2018, 2018
  • [50] Validation of an Inverter Topology for Transformerless Grid-Connected Photovoltaic System
    Datta, Asim
    Sarker, Rishiraj
    Debbarma, Sanjay
    Kumar, Amit
    ADVANCES IN SMART GRID AND RENEWABLE ENERGY, 2018, 435 : 495 - 503