单极性倍频SPWM谐波分析  

Analysis on Unipolar Frequency-doubling SPWM Harmonics

作　　者：聂向前 黄海波[1] 赵熠 卢军[1] Nie Xiangqian;Huang Haibo;Zhao Yi;Lu Jun(School of Electrical&Information Engineering,Hubei University of Automotive Technology,Shiyan 442002,China)

机构地区：[1]湖北汽车工业学院电气与信息工程学院,湖北十堰442002

出　　处：《湖北汽车工业学院学报》2018年第4期65-68,74,共5页Journal of Hubei University Of Automotive Technology

基　　金：湖北省科技支撑计划(2015BAA049);湖北省中央引导地方科技发展专项(2018ZYYD007);湖北汽车工业学院研究生创新基金(Y2017309)

摘　　要：分析了单相桥式输出相电压的傅里叶级数关系,再将互为反相的两相相电压傅里叶级数作差得到输出线电压的傅里叶级数关系,通过分析得到其谐波分布特性;搭建了Simulink仿真模型并进行验证,分析了调制度和载波比对SPWM总谐波畸变率的影响,结果表明仿真与理论分析结果一致,可根据结论提高逆变器的性能。The Fourier series relationship of single-phase bridge output phase voltage was analyzed.The Fourier series relation of the output line voltage was obtained by making the difference of the two-phase phase voltage Fourier series mutually inverted.The harmonic distribution characteristics were obtained by analysis.Then the Simulink simulation model was built to verify the effect of the modulation degree and the carrier ratio on the total harmonic distortion of SPWM.The results show that the simulation and theoretical analysis are consistent,and the performance of the inverter can be improved based on these conclusions.

关 键 词：逆变器 单极性倍频SPWM 谐波 傅里叶分析 

分 类 号：TM464[电气工程—电器]