LOW VOLTAGE APPARATUS ›› 2022, Vol. 0 ›› Issue (12): 20-27.doi: 10.16628/j.cnki.2095-8188.2022.12.004

• Research & Analysis • Previous Articles     Next Articles

Neutral Point Potential Control Method Based on Coordinate Translation SVPWM

WANG Jixiang1, LI Zheng1, WANG Han2, CAO Yunfeng2, ZHANG Jianwen2, CAI Xu2   

  1. 1. College of Information Science and Techndogy,Donghua University, Shanghai 201600, China
    2. College of Electronic Information and Electrical Engineering,Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2022-05-04 Online:2022-12-30 Published:2023-01-16

Abstract:

Three-level rectifiers widely use space vector pulse width modulation(SVPWM) algorithm.Aiming at the cumbersome calculation of the traditional SVPWM algorithm and the imbalance of the DC side neutral point potential,a simple modulation algorithm based on coordinate translation and taking into account the balance control of neutral point potential is proposed.The validity of the proposed modulation algorithm is verified by the built rectifier experimental platform.At the same time,the time of the program using the balance factor precise control algorithm and the sector switching control algorithm is measured and compared,which can verify the simplicity of the sector switching algorithm.

Key words: three-level rectifier, coordinate translation, neutral point potential balance control, sector switching

CLC Number: