A New PWM Scheme for Loss Balancing and Neutral-Point Voltage Balancing in Three-Level Active NPC Converter

被引：0
|
作者：
Zhang, Bo [1 ,2 ]
Ge, Qiongxuan [1 ]
Tan, Longcheng [3 ]
Wang, Xiaoxin [1 ]
Yu, Yang [1 ,2 ]
Liu, Jinxin [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Elect Engn, Key Lab Power Elect & Elect Drive, Beijing, Peoples R China
[2] Univ Chinese Acad Sci, Beijing, Peoples R China
[3] Ryerson Univ, Toronto, ON, Canada
来源：
PROCEEDINGS OF THE 2015 10TH IEEE CONFERENCE ON INDUSTRIAL ELECTRONICS AND APPLICATIONS | 2015年
关键词：
ANPC; loss balancing; neutral point voltage balancing; carrier based PWM;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Three-level neutral point clamped voltage source converter (NPC VSC) is widely used in high-power high-voltage applications. The main drawbacks of NPC VSC are the unequal loss distribution among the semiconductors and the fluctuation in the neutral point voltage. Compared with NPC converter, active NPC (ANPC) converter enable more commutations and thus improve the loss distribution among semiconductor devices, the output power rating is increased. However the fluctuation in the neutral point voltage of ANPC may destroy the loss balancing and increase the voltage stress across the power devices. A novel PWM scheme that includes loss balancing and NP voltage balancing over the full range of converter output voltage and for all load power factors is proposed in this paper. The performance of this modulation approach and its benefits are verified through simulation and experiments.
引用
收藏
页码：1133 / 1138
页数：6
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