A simplified synchronous pulse-width modulation method for three-level inverter of high-speed train

被引：0
作者：
Lin, Fei [1 ]
Lian, Qiaona [1 ]
Yuan, Jialiang [1 ]
Yang, Zhongping [1 ]
Zhang, Zhiqiang [2 ]
Xu, Yue [2 ]
Jiao, Jinghai [2 ]
机构：
[1] School of Electrical Engineering, Beijing Jiaotong University, No.3 ShangyuanCun, Beijing
[2] CSR Qingdao Sifang Co., Ltd, Qingdao
来源：
International Journal of Smart Home | 2015年 / 9卷 / 12期
关键词：
AC drive; Central; 60°; modulation; Multi-mode PWM; Neutral-point clamped three-level inverter; Synchronous modulation;
D O I：
10.14257/ijsh.2015.9.12.21
中图分类号：
学科分类号：
摘要：
The synchronous Pulse-Width Modulation (PWM) is quite complex for three-level neutral point-clamped (NPC) inverter. A simple central 60° synchronous modulation method is presented in this paper for three-level NPC inverter used in the multi-mode PWM strategy. For the fundamental voltage command, the switching angle could be real-time calculated based on this modulation method with different carrier frequency ratios. The switching strategy between these modes is discussed for multi-mode PWM. According to this method, a simulation model of the drive system with three-level inverter and induction motor is built. The simulation results at asynchronous modulation, central 60° synchronous modulation and square wave area, show that the output voltage values can meet the requirements with a good symmetry even in the case of low carrier frequency ratio. The smooth switching among different modes is also accomplished with low impulse current. © 2015 SERSC.
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页码：199 / 214
页数：15
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