特定消谐技术开关角计算方法的研究  

Study of Calculating Switch Angles for Shet

作　　者：刘磊[1] 魏玲[2] 翟庆志[2] 

机构地区：[1]北京电力设计院,100055 [2]中国农业大学信息与电气工程学院,100083

出　　处：《电气应用》2007年第6期56-58,73,共4页Electrotechnical Application

摘　　要：基于三相半桥式电压型逆变器,研究了特定消谐(SHE)的数学模型。针对SHE开关角计算难度大的问题,给出了开关角计算初值选取方法。算例结果表明该初值选取方法能够实现迭代计算快速收敛,并得出了SHE的过调制特性。对SHE做了仿真实验,结果验证了利用初值选取方法计算的开关角对抑制特定谐波是有效的;该方法对SHE实用化有一定的参考价值。The mathematical model of SHE based on the most general three - phase half bridge voltage source inverter is studied. Due to the difficulty of calculating switching angles, a method to SHE choose initial value is presented. The results validate the method can realize fast convergence and show the over modulation character of SHE. The simulation to SHE verifies the method of choosing initial value is valid to restrain the specifically harmonic. The method is valuable for the widely application of SHE.

关 键 词：特定消谐技术 逆变器 仿真 

分 类 号：TM744[电气工程—电力系统及自动化]