Performance optimization of VIENNA rectifier based on SVM under unbalanced grid

Dianzi Jishu Yingyong

Shao Ruping¹  Wang Da¹  Dong Feiju¹ 

[1] College of Electrical Engineering and Control Science，Nanjing Tech University，Nanjing 211816，China;

关键词: VIENNA rectifier;    direct synchronous decoupling method;    unbalanced grid;    dead-beat control;    PFC;   

DOI  :  10.16157/j.issn.0258-7998.181382

来源: DOAJ

【 摘 要 】

On the basis of the steady state analysis of the VIENNA rectifier, an improved direct synchronous decoupling method is used to model the current inner loop, and a small amount of power compensation is added to expand the working area to adapt to different degrees of unbalanced voltage, which can reduce the DC voltage ripple and reactive power DC component under unbalanced input condition. In addition, this paper adds dead-beat control to track the reference current and selects the best duty cycle to drive the gate. The control strategy effectively realizes DC side voltage ripple elimination and power factor correction. Simulation and experiment verify the correctness of the theoretical analysis and the feasibility of the control strategy.

【 授权许可】

Unknown