Design of Dual PWM Inverter for Harmonic Minimization

摘要：

　　In photovoltaic power generation system, DC voltage variation leads to AC voltage distortion. This paper introduced a dual PWM inverter to reduce AC voltage harmonics when DC voltage was changing, which is based on D&Ts inverter model. Dual PWM inverter is composed of two series three-phase PWM inverters. Its fundamental voltage characteristic is used to calculate modulations to maintain output voltage stably, and its harmonic voltage characteristic is used to calculate the operating point for harmonics minimization. Therefore, the two series inverters worked with different modulations, but its total output voltage is constant, and the harmonic distortion rate is at low level. Finally, the inverters topological structure, characteristic analysis and control method is testified to be effective by simulation experiment.

关键词： Harmonics Modulation Photovoltaic PWM inverter

作者: Liu Fang Zhao Qiaoe Zhu Yanfang Wu Xiaodong

作者单位: TaiYuan University of Technology; ShanXi University ShanXi University State Grid ShanXi Electric Power Company

会议类型: 国际会议

会议名称: 2016中国国际供电会议(CICED2016)

会议地点: 西安

会议语种:英文

页码: 1-5

在线出版日期: 2016-09-01（万方平台首次上网日期，不代表论文的发表时间）