三相电压源逆变器直流侧支撑电容的电压脉动分析与设计

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摘要分析了三相逆变器在正弦脉冲宽度调制(SPWM)、3次谐波注入与典型空间矢量调制(SVPWM)几种情况下直流母线输入电流的成分, 对于平衡线性负载而言, 指出了母线输入电流中的谐波频率仅处于开关频率、开关频率的倍频及其各自的边带, 进而得出了直流侧支撑电容在一个开关周期中不同时间段的电压脉动表达式。依据电容电压脉动表达式, 提出了一种适用于常用调制方式的支撑电容设计原则。仿真与实验结果表明根据该设计原则可以达到很小的输出电压波形畸变率, 表明了文中分析和设计的正确性。

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	裴雪军
	陈材
	康勇

关键词 ：三相逆变器, 直流侧支撑电容, 直流母线输入电流, 电压脉动

Abstract：This paper analyzes the harmonic components of the input current in the three-phase voltage source inverter under sinusoidal pulse-width modulation (SPWM), third-harmonic injection PWM, and typical space vector PWM (SVPWM). The analysis results show that the DC-link current only contains the high-frequency harmonics at the switching frequency, its multiples and the sidebands for balanced and linear loads. The equations of the voltage ripple at different time intervals are derived for the DC-link capacitor during one switching period. Based on the equations of the DC-link voltage ripple, a design principle is presented for the DC-link capacitor. Simulation and experimental results show that the inverter can achieve low total harmonic distortion (THD) based on the proposed design principle. Therefore, the correcfness of the analysis and design is verified.

Key words： Three-phase inverter DC-link capacitor DC-link current voltage ripple

收稿日期: 2012-09-21 出版日期: 2014-06-17

PACS:

TM464

基金资助:台达电力电子科教发展计划重点项目(DREK2013001)和中央高校基本科研业务费专项资金(2012QN195)资助项目

作者简介: 裴雪军, 男, 1978年生, 博士, 副教授, 研究方向为电力电子装置的控制、故障诊断及其EMI技术; 陈材, 男, 1985年生﹐博士研究生, 研究方向为大功率逆变电源。

引用本文:

裴雪军, 陈材, 康勇. 三相电压源逆变器直流侧支撑电容的电压脉动分析与设计[J]. 电工技术学报, 2014, 29(3): 254-259. Pei Xuejun, Chen Cai, Kang Yong. Analysis of Voltage Ripple and Design for DC-Link Capacitor in Three-Phase Voltage Source Inverters. Transactions of China Electrotechnical Society, 2014, 29(3): 254-259.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I3/254

[1] Pei Xuejun, Kang Yong. Short-circuit fault protection strategy for high power three-phase three-wire inverter [J]. IEEE Transactions of Industry Information, 2012, 8 (3): 545-553.
[2] Holmes D G, Lipo T A. Pulse width modulation for power converters: principles and practice[M]. NJ: IEEE Press, 2003.
[3] Dahono P A, Sato Y, Kataoka T. Analysis and minimization of ripple components of input current and voltage of PWM inverters[J]. IEEE Transactions of Industry Application, 1996, 32(4): 945-950.
[4] Mcgrath B P, Holmes D G. A general analytical method for calculating inverter DC-link current harmonics[J]. IEEE Transactions of Industry Application, 2009, 45(5): 1851-1859.
[5] Mariscotti A. Analysis of the DC-link current spectrum in voltage source inverters[J]. IEEE Transactions of Circuits and Systems-Ι, 2002, 49(4): 484-491.
[6] Hobraiche J, Vilain J, Macret P, et al. A new PWM strategy to reduce the inverter input current ripples[J]. IEEE Transactions of Power Electronics, 2009, 24(1): 172-180.
[7] Bierhoff M H, Fuchs F W. DC-link harmonics of three-phase voltage-source converters influenced by the pulse-width-modulation strategy-an anlysis[J]. IEEE Transactions of Industry Electronics, 2008, 55(5): 2085-2092.
[8] 周柯, 罗安. 大功率有源滤波器直流侧电容设计与电压控制[J]. 电力电子技术, 2007, 41(4): 12-15.
Zhou Ke, Luo An. DC Side capacitor's design and voltage control in high-capacity active power filter[J]. Power Electronics, 2007, 41(4): 12-15.
[9] 王鹏, 刘利则, 马聪. 新型三相逆变器直流连接电容的选取方法[J]. 东北电力大学学报, 2007, 27(6): 77-81.
Wang Peng, Liu lize, Ma Cong. Selection method of the DC-link capacitor of a novel three-phase inverter[J]. Journal of Northeast Dianli University, 2007, 27(6): 77-81.
[10] Kolar J W, Round S D. Analytical calculation of the RMS current stress on the DC-link capacitor of voltage-PWM converter systems[J]. IEEE Proceedings of Electric Power Applications, 2006, 153(4): 535-543.