PCHD模型的TNPC-UPQC无源混合控制

Passivity based hybrid control strategy of TNPC-UPQC based on port controlled Hamiltonian with dissipation model

为改进UPQC的控制性能,建立并分析了TNPC-UPQC的端口受控哈密顿(PCHD)数学模型,利用该模型和UPQC的无源性,采用基于互联和阻尼配置无源控制(IDA-PBC)方法,设计了无源混合控制器,对UPQC进行控制.利用本文提出的无源混合控制器,可有效补偿负载电压和电网电流,使负载电压或电网电流为近似正弦波.在MATLAB/simulink仿真平台上搭建TNPC-UPQC无源混合控制器的仿真模型,对TNPC-UPQC的谐波补偿性能进行了仿真实验研究.仿真结果表明本文提出的无源混合控制策略是可行的.

To improve the control performance of UPQC, the port controlled Hamiltonian with dissipation(PCHD) mathematical model of TNPC-UPQC is set up and analyzed. According to the PCHD model and the passivity of TNPC-UPQC system, the passivity based hybrid controller is designed through interconnection and damping-assignment passivity based control(IDA-PBC) to control the UPQC. Using the passivity based hybrid controller proposed in this paper, the load voltage and source current can be compensated effectively, which makes the load voltage and power supply current sinusoidal. The simulation model of TNPC-UPQC and the passivity based hybrid control system are built based on MATLAB/Simulink. The compensation performance of TNPC-UPQC is simulated and analyzed. The simulation results show that the passivity based hybrid control strategy is feasible.