自抗扰控制器在单相统一电能质量调节器中的应用

Active Disturbance Rejection Controller for Single Phase Unified Power Quality Conditioner

本文介绍了单相统一电能质量调节器(Single-Phase Unified Power Quality Conditioner,SPUPQC)的工作原理和数学模型。在介绍自抗扰控制器的结构和工作原理的基础上,针对SPUPQC设计了自抗扰控制系统。自抗扰控制器的设计不需要精确的SPUPQC参数和数学模型,将电网电压和负载电流视为系统的未知干扰,用扩张状态观测器对未知扰动进行观测,然后利用非线性反馈控制律进行补偿。仿真结果证明了该控制器设计的可靠性与有效性。

The working principle and mathematics models of the single phase unified power quality conditioner are introduced in this paper. Based on introduction of the configuration and arithmetic of active disturbance rejection controller （ADRC）, an active disturbance rejection control system for SPUPQC is designed. The ADRC controller can be designed without accurate SPUPQC parameters and model. The source voltage and load current are contributed to system disturbances and the expending state observer （ESO） is used to estimate. Then the disturbances can be compensated by the nonlinear state error feedback control law （NLSEF）. The simulation results illustrate the effectiveness and reliability of the proposed control strategy.