A Switched-Capacitor-Voltage-Doubler Based Boost Inverter for Common-Mode Voltage Reduction

被引：34
作者：
Iran, Tan-Tai [1 ]
Nguyen, Minh-Khai [2 ]
Duong, Truong-Duy [1 ]
Choi, Joon-Ho [1 ]
Lim, Young-Cheol [1 ]
Zare, And Firuz [3 ]
机构：
[1] Chonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South Korea
[2] Queensland Univ Technol, Sch Elect Engn & Comp Sci, Brisbane, Qld 4000, Australia
[3] Univ Queensland, Sch Informat Technol & Elect Engn, Brisbane, Qld 4072, Australia
来源：
IEEE ACCESS | 2019年 / 7卷
关键词：
Three-phase inverter topology; common-mode voltage; transformerless PV system; space-vector pulse-width modulation; leakage current; LEAKAGE CURRENT REDUCTION; MODULATION TECHNIQUES; CONDUCTED EMI; 3-PHASE; FILTER;
D O I：
10.1109/ACCESS.2019.2930122
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, a modified three-phase two-level voltage source inverter is proposed. By combining the conventional three-phase H-bridge inverter with a switched-capacitor-voltage-doubler network, the DC-link voltage of the proposed inverter is double with respect to the input DC voltage. As a result, the output voltage of the proposed inverter can be higher than the input DC voltage. Furthermore, a common-mode voltage (CMV) of the proposed inverter can be reduced through controlling the two additional switches based on the space vector pulse-width modulation. Compared to the existing modulations and topologies, the variation in CMV can only be up to 16.6% of DC-link voltage. Furthermore, the voltage stress across additional switches and diodes is equal to half of DC-link voltage. Mathematical analysis, operating principles, and comparison of the proposed three-phase two-level voltage source inverter with the conventional three-phase voltage source inverters are presented. The simulation results based on PLECS software verify a good performance of the proposed inverter. Finally, a laboratory prototype based on a TMS320F280049 DSP is developed and experimental tests are carried out to validate the effectiveness of the proposed three-phase inverter topology.
引用
收藏
页码：98618 / 98629
页数：12
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