中国电机工程学报2017，Vol.37Issue(24)：7284-7293,10.DOI:10.13334/j.0258-8013.pcsee.161967
VIENNA整流器中点电位振荡抑制与平衡控制研究
Investigation of Neutral-Point Voltage Oscillation Suppression and Balancing Control in VIENNA Rectifiers
摘要
Abstract
With its simple structure, the VIENNA rectifier realizes the operation of the unit power factor and low harmonic. However, its neutral-point voltage unbalance and oscillation not only reduce the capacitor life resulting in a poor operational reliability, but also could degrade the power quality so seriously that could lead to system crash. Consequently, a novel method to suppress the neutral-point (NP) voltage oscillation and control NP potential unbalance was proposed in this paper. First, carrier-based PWM (CB-PWM) for VIENNA rectifiers was simplified based on the equivalence of SVM. Secondly, the effect of voltage vectors on the NP voltage was analyzed. After calculating the compensation factor of NP voltages, the injection of zero-sequence component is modified to minimize the low-frequency NP Voltage oscillation. The method proposed in this paper can suppress the NP voltage oscillation and control NP voltage unbalance with low current harmonic distortion. The feasibility and effectiveness of NP voltage oscillation suppression considering NP voltage balance control were verified in simulations and experiments.关键词
VIENNA整流器/零序分量注入/中点电位振荡抑制/中点电位平衡控制Key words
VIENNA rectifier/zero-sequence component injection/neutral-point (NP) voltage oscillation suppression/neutral-point voltage control分类
信息技术与安全科学引用本文复制引用
丁文龙,刘家君,段彬,张承慧..VIENNA整流器中点电位振荡抑制与平衡控制研究[J].中国电机工程学报,2017,37(24):7284-7293,10.基金项目
国家重大仪器研制项目(61527809, 51377101, 61703239, 2016ZDJS03A02). The National Natural Science Foundation of China (61527809, 51377101, 61703239, 2016ZDJS03A02). （61527809, 51377101, 61703239, 2016ZDJS03A02）
