基于开关周期平均模型的PWM变流器的改进型SVPWM控制.pdfVIP

学兔兔 总第49卷 第554期 电测与仪表 VO1．49 No．554 2012年 第2期 ElectricaiMeasurement Instrumentation Feb．2012 基于开关周期平均模型的PWM变流器的 改进型SVPWM控制木 ． 张军利 ，王凯 ，张昭 ，党常亮 (1．宝鸡文理学院，陕西 宝鸡721007；2．伊春电业局营销部，黑龙江伊春 153000) 摘要：建7f TPWM变流器在整流状态和逆变状态下的平均空间状态数学模型，以及在同步旋转坐标下的数学模 型；给出了改进型SVPWM控制策略的实现原理，相比较于传统SVPWM控制策略，改进型SVPWM控制策略可以 减小开关损耗，提高系统效率。最后给出了系统在仿真软件中实现的波形。可以看出，本文给出的数学模型和 SVPWM控制策略是正确的，而且对其它与此相关的主电路拓扑结构也有一定的参考价值。 关键词：PWM变流器；平均空间状态；改进型SVPWM；数学模型；开关损耗 中图分类号：TM714 文献标识码：B 文章编号：1001—1390(2012)02—0052—03 The SVPWM Control of pWM Converter Based on the Switching Cycle Average Model ZHANG Jun-li，WANG Kai，ZHANG Zhao，DANG Charrg-liang (1．Baoji Univ．of Arts＆Sci．，Baoji 721007 Shaanxi，China． 2．Yichun Electric Power Supply Bureau，Yichun 1 53000，Heilongjiang，China) ／ Abstract：The average space state mathematic model of the PWM converter as a rectifier and as all inverter is established．The mathematic model in synchronous rotating coordinate is also obtained．The implementation principle of the improved SVPWM control strategy is introduced．Compared with traditional SVPWM control strategy，the improved SVPWM control strategy can reduce the switching losses and improve system efficiency．The simulation waveforms are obtained and they agree with the theory analysis．The proposed mathematic models and the improved SVPWM control strategy are correct and have any reference value to the other related power circuit topology devices． Key words：PWM rectifier，average space state；improved SVPWM，mathematic model，switching losses 0 引