Design of Dual PWM Inverter for Harmonic Minimization

被引：0
|
作者：
Liu Fang [1 ,2 ]
Zhao Qiaoe [2 ]
Zhu Yanfang [3 ]
Wu Xiaodong [1 ,2 ]
机构：
[1] TaiYuan Univ Technol, Taiyuan Shi, Shanxi Sheng, Peoples R China
[2] Shanxi Univ, Taiyuan 030006, Peoples R China
[3] State Grid ShanXi Elect Power Co, Shuozhou, Peoples R China
来源：
2016 CHINA INTERNATIONAL CONFERENCE ON ELECTRICITY DISTRIBUTION (CICED) | 2016年
关键词：
Harmonics; Modulation; Photovoltaic; PWM inverter; POWER-GENERATION; MITIGATION; SYSTEM;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
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&T's 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 inverter's topological structure, characteristic analysis and control method is testified to be effective by simulation experiment.
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页数：6
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