PCI控制的三电平逆变器仿真实验

Simulation experiment of PCI controlled three-level inverter

为解决PI控制的三电平逆变器无法实现交流量零稳态误差的问题,提出PCI控制器的闭环控制方案。采用电压、电流双闭环控制方法,以二极管箝位式三电平逆变电路作为被控对象进行PCI控制器设计。在Simulink仿真平台上对突变负载情况下PCI和PI控制进行仿真验证和波形对比分析。仿真结果表明PCI控制实现了交流量的无误差跟踪,满足逆变器性能指标的要求。

In order to solve the problem of the zero steady-state error of PI controlled three-level inverter,a closed-loop control scheme of the PCI（peripheral component interconnect）controller is proposed.By adopting the double closed-loop control method of voltage and current,the diode clamped three-level inverter circuit is used as the controlled object to design the PCI controller.The simulation verification and waveform comparison analysis of the PCI and PI controls for abrupt load situations are carried out on the Simulink simulation platform.The simulation results show that the PCI control realizes the error free tracking of the AC flow and satisfies the requirements of the inverter performance index.