摘要
为实现交流电子负载模拟阻性负载以及任意功率因数的感性和容性负载,基于单周期控制建立了包括电压型PWM整流器与单周期控制器两部分的单相交流电子负载模型.其中,PWM整流器采用单极性调制方式,控制器采用双环控制,其外环为直流电压控制环,内环为交流电流控制环.然后利用Matlab/Simulink软件对在不同属性负载下的单相交流电子负载进行了仿真.仿真结果表明:单周期控制单相交流电子负载能够较好地完成各种负载特性的模拟,抗扰性强,响应快,阻性、阻感性、阻容性3种负载的响应时间分别为100ms、160 ms和170 ms,验证了单周期控制策略的有效性和实用性.
To realize an AC electronic load that can simulate a resistive load and inductive as well as capacitive loads with arbitrary power factor,a model of single-phase AC electronic load was set up based on one-cycle control,including voltage-type PWM rectifier and one-cycle controller,where the unipolarity modulation mode is used in the rectifier while the double-loop control with the outer loop as the DC voltage control and the inner one as AC current control is employed in the controller.By using Matlab/Simulink software,single-phase AC electronic load correspon-ding to various types of loads was simulated,showing that the AC electronic load with one-cycle control can fulfill bet-ter the simulation of various load characteristics,having the advantages of stronger anti-interference,fast response and the response time of resistive,resistive-inductive,and restive-capacitive being 100 ms,160 ms and 170 ms respectively,thus verifying the availability of one-cycle control strategy.
出处
《空军雷达学院学报》
2010年第6期429-431,442,共4页
Journal of Air Force Radar Academy
