三相CSR非线性和有源阻尼复合控制研究

Study on Nonlinear and Active Damping Control of Three-phase CSR

三相电流型PWM整流器(CSR)可以实现直流侧的调压调功,而且能够实现网侧电压电流同相位,减少网侧谐波含量。针对三相CSR的非线性耦合系统进行输入输出精确线性化,为了提高电流跟踪特性和鲁棒性并且抑制网侧LC滤波器的谐振尖峰,设计了非线性和有源阻尼复合控制器。通过Matlab/Simulink进行仿真,并且搭建了基于三相CSR的感应加热电源的实验样机对以上控制策略进行验证,结果证明该控制算法的有效性和合理性。

The three-phase current source rectifier(CSR)can directly achieve power regulator at the DC side,and improve the power factor of the regulation system and reduce the harmonic content of the network.Aimming at the input/output exact linearization of the CSR,the controller mixed of nonlinear and active damping was designed to improve tracking characteristics and robustness of current and restrain the peak of resonant.The simulation in Matlab/Simulink and the experimental prototype of the CSR induction heating power were built to verify the above control strategy.The results show that the control algorithm is effective and reasonable.