A High-Power-Density Single-Phase Rectifier Based on Three-Level Neutral-Point Clamped Circuits

Energies

Xiaoxiao Guo¹  Zeliang Shu²  Tao Zhou²  Hongjian Lin²  Deng Luo²  Yajun Chen³ 

[1] Monolithic Power Systems, Shenzhen 518000, China;School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China;State Grid Suining Power Supply Company, Suining 629000, China;

关键词: single-phase rectifier;    three-level neutral-point clamped converter;    SiC MOSFET;    space vector pulse width modulation;   

DOI  :  10.3390/en10050697

来源: DOAJ

【 摘 要 】

A single-phase three-level converter is suitable for medium-power applications, with an interface voltage that is higher than that of a traditional two-level configuration. The three-level neutral-point clamped converter is adopted using four switches in each bridge arm, which, compared to a two-level rectifier, leads to less voltage stress, a lower switching frequency, and switching loss on switches. The transient current control strategy is designed to control the active power. The single-phase space vector pulse width modulation (SVPWM) with a voltage balance strategy is designed to solve the neutral point voltage fluctuation problem and keep the dc-link voltage stable. A 1.3 kW high-power-density prototype based on SiC MOSFET was built and tested. The experimental results verified the high performance of steady-state and dynamic responses.

【 授权许可】

Unknown