AC-DC-AC变换器的迭代谐波分析方法  

Iterative Harmonics Analysis Approach for AC-DC-AC Converters

作　　者：吕照瑞[1] 夏立[1] 吴正国[1] 

机构地区：[1]海军工程大学电气与信息工程学院,武汉430033

出　　处：《武汉理工大学学报》2009年第24期87-90,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50721063)

摘　　要：针对AC-DC-AC变换器中逆变器的电压电流传播规律,提出了一种新的AC-DC-AC变换器的迭代谐波分析方法,对电压、电流以及变换器开关函数的各谐波分量进行了相量描述,并结合相量计算及其相序特性对AC-DC-AC变换器进行了基于相量的谐波建模。该模型利用PWM型逆变器的主要谐波阻抗之间的解耦特性,对变换器谐波和间谐波分别进行分析,并把该谐波模型应用于迭代谐波分析(IHA)中,使迭代计算方法得到很大程度的简化。大量的时域仿真和计算结果的对比则验证了该方法的可行性。A novel iterative harmonies analysis （IHA） approach for AC-DC-AC PWM converters is presented. Vectors are used to express the harmonic components of voltages, currents and switching functions. Harmonic models for AC-DC-AC PWM converters are proposed based on the account of vectors and their sequence eharaeteristie. Utilizing the decoupling of the main harmonic impedanees for PWM converters, the harmonic and interharmonic are calculated separately. The harmonic cttrrents aroused by each voltage components can be calculated directly by the harmonie models. Then, the harmonic models are applied in IHA approach, which can simplify the method largely. Finally, the contrast between simulation and calculation results validates the feasibility of this method.

关 键 词：谐波分量 迭代谐波和间谐波分析 AC-DC-AC 

分 类 号：TM464[电气工程—电器]