电机与控制应用2017，Vol.44Issue(7)：59-65,7.
基于SVPWM和模糊PI参数自整定的Z源逆变器并网研究
Research on Z Source Inverter Grid-Connected System Based on SVPWM and Fuzzy PI Control of Parameter Self-Adjustment
摘要
Abstract
Compared with the traditional voltage source inverter (VSI) and current source inverter (CSI),Z-source inverter had the ability like buck-boost conversion and no dead time was needed in phase legs,so high reliability could be achieved.A space vector pulse width modulation (SVPWM) technique was modified to realize the shoot-through zero vectors in the Z-source inverter(ZSI).The Z-source inverter could generate a more ideal sinusoidal AC output voltage and step up the DC-link voltage in any multiple.For the Z-source inverter,the traditional control strategy often used the double loop PI control of outer voltage loop and inner current loop.It was hard to achieve higher control accuracy while using the control of traditional double PI loop and the harmonic distortion rate of gridconnected current was high.According to the limitations of traditional PI control,a fuzzy PI controller was proposed.The controller took advantage of fuzzy control to adjust the PI parameter online according to the error,so as to meet the requirments of optimal performance.Through the simulation experiment the effectiveness and validity of the proposed method were verified.关键词
Z源逆变器/空间矢量脉宽调制/模糊PI控制器/直通占空比/解耦Key words
Z-source inverter/space vector pulse width modulation (SVPWM)/fuzzy PI control/shoot-through duty ratio/decouple分类
信息技术与安全科学引用本文复制引用
杨旭红,杨峰峰,郭凯,薛冰,王阗姝..基于SVPWM和模糊PI参数自整定的Z源逆变器并网研究[J].电机与控制应用,2017,44(7):59-65,7.基金项目
国家自然科学基金(61203224) （61203224）
上海自然科学基金项目(13ZR1417800) （13ZR1417800）
上海市电站自动化技术重点实验室开放课题(13DZ2273800) （13DZ2273800）
上海市科技创新行动技术高新技术领域重点项目(14511101200) （14511101200）
上海市重点科技攻关计划(上海市科委地方院校能力建设项目)(14110500700) （上海市科委地方院校能力建设项目）
