The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
kong zhi wang luo yan shi dui spwm ni bian qi shu chu dian ya de ying xiang
Author(s): 
Pages: 194-203
Year: Issue:  8
Journal: Transactions of China Electrotechnical Society

Keyword:  Distributed controlnetwork delaysingle-leg delayserial delayline-to-line voltageharmonic analysis;
Abstract: 针对中大容量变流器分布式控制系统存在固有的控制网络延时,详细推导了SPWM逆变器系统在单桥臂延时和桥臂串行延时的情况下输出线电压的数学表达式,并对两种情况下的输出线电压进行了详细地仿真定量分析和实验验证,仿真和实验结果与理论分析基本吻合,仿真和实验结果表明控制网络延时的引入使得系统输出线电压中出现了开关频率(s)的奇数倍高次谐波,同时边频带中出现了基波频率(1)的3倍数次谐波,系统输出线电压总谐波系数(THD)值和各主要次谐波幅值随着控制网络延时的增加而发生变化,且THD值在单桥臂网络延时50%开关周期和桥臂串行网络延时为50%~100%开关周期时达到最大值。
Related Articles
No related articles found