蓄电池供电的三相PWM变流器直流电容设计  

DC Capacitance Design of Battery-powered Three-phase PWM Converter

作　　者：刘静波 王多平 田军 杨嘉伟 唐健 LIU Jingbo;WANG Duoping;TIAN Jun;YANG Jiawei;TANG Jian(DEC Academy of Science and Technology Co.,Ltd.,611731,Chengdu,China)

机构地区：[1]东方电气集团科学技术研究院有限公司,成都611731

出　　处：《东方电气评论》2021年第3期29-32,共4页Dongfang Electric Review

基　　金：四川省科技计划项目资助:电厂智能化关键技术研究;项目编号:2020YFG0350。

摘　　要：电池供电的三相PWM变流器应用广泛,但是直流电容的设计一般凭借经验估算或是通过试验测试,经验估算存在偏差,试验测试设计效率不高实施不方便。本文根据拓扑与调制的原理,分析了直流侧的电流情况,推导出直流电流的有效值及平均值。依据直流侧电流的传递函数,提出了较为精确的设计直流电容的方法,并对提出的设计方法进行了仿真验证。Battery-powered three-phase PWM converter are widely used,but the design of DC capacitor generally relies on experience to estimate or through test,which empirical estimation is biased,and test design efficiency is not high implementation and is not convenient.Based on the principle of topology and modulation,the current situation of DC side is analyzed,the RMS value and average value of DC current are derived.According to the transfer function of the dc side current,a more accurate design method of DC current capacity is proposed,and the proposed design method is verified by simulation.

关 键 词：直流电容 变流器 SVPWM 蓄电池 

分 类 号：TM46[电气工程—电器]