Motor Simulator Based on PWM
|Course||Proceedings of the|
|Keywords||Voltage -type PWM converter Power load simulator Motor simulator PID controller Energy feedback|
Induction motor as a power system dynamic simulation laboratory indispensable power load simulator equipment , there is space , is not easy to adjust to consume a lot of power , more serious damage to the disadvantage of the repeated starting test the impact of the motor itself . In this paper, the basic principle of the voltage -type PWM converter , combined with the power system environment is characterized by high - power AC motor control AC - DC - AC power load simulator , based on the three-phase AC type separation proposed and designed motor simulator to solve these problems. Three-phase AC load simulator cross - part of the direct control only responsible for the load voltage characteristics simulation load simulator internal DC voltage to the DC - AC control part to complete ; same time , in order to improve the load simulator Feedback The efficiency of the feedback current implementation of the unity power factor control . Motor starting current , fast changing , motor simulator has been improved on the basis of the three-phase AC power load simulator parallel system architecture design and phase shift PWM control technology , the design also uses a genetic algorithm parameter optimization of PID controller tuning in order to ensure the quality of current control . PWM technology - based motor simulator can accurately simulate the volt-ampere characteristics of the motor load ; can feedback to the external grid quality of electricity , the loss is only the switching loss and the line loss of the PWM converter , to maximize the energy savings , which has a good prospect in the power system dynamic simulation laboratory , industrial equipment testing places .