基于SVPWM低谐波死区算法的研究及应用  

Research and application of low harmonics dead-time injection based on SVPWM

作　　者：赵耀[1] 赵庚申[1] 郭天勇[1] 赵星宇[1] 殷杰[1] 

机构地区：[1]南开大学光电子薄膜器件与技术研究所,光电子薄膜器件与技术重点实验室,天津300071

出　　处：《电力系统保护与控制》2012年第8期57-62,83,共7页Power System Protection and Control

基　　金：天津市重点基金(11JCZDJC22900)

摘　　要：针对传统死区时间注入SVPWM调制波会使逆变电路输出波形产生畸变并导致其幅度降低的问题,为降低输出波形的谐波含量,提出了一种将可变死区时间加入到零矢量中的死区注入方法。在单相SVPWM调制方法的矢量合成原理分析基础上,对死区算法进行理论研究,并利用Matlab仿真进行了谐波分析。研究了采用FPGA生成SVPWM波形及相应的死区注入方法,利用微网分布式电源实验平台,分别对两种不同死区时间注入单相SVPWM的算法进行了实验验证,证明了该低谐波死区算法的有效性和准确性。Adding the dead-time to the SVPWM in the traditional method will cause distorted output wave of inverter and lower the amplitude, thus a new method of adding the variable dead-time to zero vector is put forward to reduce the harmonics content of output wave. On the basis of single-phase SVPWM vector synthesis theories, the dead-time injection theory is discussed and harmonic analysis is done using Matlab simulation. The method that using FPGA to generate SVPWM waves and injecting the dead-time is studied, on the micro-grid distributed generation experimental platform, two different ways of injecting dead-time into single-phase SVPWM are simulated and experimented, proving the validity and accuracy of this low harmonic dead-area method.

关 键 词：分布式电源 低谐波 空间矢量PWM 死区时间 FPGA 微网 

分 类 号：TM464[电气工程—电器]