【摘要】 针对三相PWM整流器控制系统工程上参数整定困难的问题,进行了理论分析和dSPACE实时仿真实验研究,给出了电流环滑模变结构控制器设计方法,指出了电流环控制器参数独立设计的必要性。采用PI控制器实现了电压环的有效控制,并给出了参数整定方法。应用dSPACE装置构成了实时仿真实验系统,表明了所提理论方法的可行性,有效地减少了参数整定过程中的盲目性。实验结果表明,三相PWM整流器控制系统稳态和动态性能优良,控制器参数整定方法实用可行,dSPACE在电力电子控制系统分析与设计中具有十分便捷的效能。更多还原

【Abstract】 The controller parameters tuning is a difficult problem in the application of three-phase PWM rectifier,therefore,aiming at resolving the above problem,the theoretical analysis and dSPACE real-time simulation are studied.The current controller is designed using sliding mode control,and the necessary of separate current loop parameters tuning is proposed.Moreover,PI control is employed in the voltage control loop,and PI parameters tuning method is given.The real-time simulation experiment system is constructed based on dSPACE to validate the proposed methods.Experiment results show that the proposed PWM rectifier control system has better steady and dynamic performance with correct and feasible parameter tuning methods,and dSPACE is very convenient for power electronic system analysis and design.更多还原