Modulation Technique for Modified Active Quasi-Z-Source Inverter with Common-Mode Voltage Reduction

Electronics

Youn-Ok Choi¹  Minh-Khai Nguyen² 

[1] Department of Electrical Engineering, Chosun University, Gwangju 61452, Korea;Faculty of Electrical and Electronics Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 700000, Vietnam;

关键词: Z-source inverter;    single-stage inverter;    common-mode voltage;    space vector modulation;    transformerless inverter;   

DOI  :  10.3390/electronics10232968

来源: DOAJ

【 摘 要 】

In Z-source topologies, a high-amplitude common-mode voltage can occur when shoot-through states are inserted. In this study, a new space vector pulse-width modulation for an active quasi-Z-source topology is proposed to operate at a high modulation index and reduce the common-mode voltage to one-third of the DC-link voltage. Moreover, the quality of the output voltage is improved by operation with a high modulation index and decreasing the switching loss of the H-bridge switches. The detailed operating principles of the active quasi-Z-source topology using the proposed space vector modulation (SVM) method are presented. A simulation model was built, and an experimental prototype was verified to correct the theoretical analysis.

【 授权许可】

Unknown