三相PWM整流器的状态误差PCH控制与仿真研究

Control and Simulation of Three-Phase Voltage Source PWM Rectifier Based on the State Error PCH Control Principle

采用一种新的状态误差端口受控哈密顿(PCH)和能量成形控制方法,实现三相电压型PWM整流器的单位功率因数和输出直流电压恒定控制。在d-q旋转坐标系下给出三相电压型PWM整流器的PCH模型,构建了期望的闭环状态误差PCH系统。根据系统的设计目标和引入比例积分控制确定期望的平衡点。基于能量成形原理选取了期望的闭环哈密顿函数,通过互联和阻尼配置设计了控制器。利用SVPWM信号变换控制整流桥。仿真结果表明,系统达到了控制目标且具有良好的负载扰动抑制能力。

Based on a novel control method of the state error Port-Controlled Hamiltonian（PCH） systems and energy-shaping,unity power factor and output voltage control of three-phase voltage source PWM（Pulse Width Modulation） rectifier are realized.The desired closed-loop state error PCH system is assigned on the PCH model of three-phase voltage source PWM rectifier in the d-q rotation frames.According to the target of the controller design and introducing PI control,the desired equilibrium point of the system is obtained.The desired Hamiltonian function is choosed based on the energy-shaping theory.The controller is designed through interconnection and damping assignment.The rectifier bridge is controlled by SVPWM signal transformation method.The simulation results are presented to show that the system not only achieves the control target but also have good load disturbances attenuation performance.