[关键词]
[摘要]
提出一种基于三电平T型中性点箝位(TNPC)型有源电力滤波器(APF)自抗扰无源控制策略,有效解决了传统TNPC型APF控制策略存在控制性能不佳的问题。建立了TNPC型APF的欧拉-拉格朗日(EL)模型,基于系统的无源性,采用注入阻尼的方法,设计了电流内环的无源控制器,从理论上保证了系统的稳定性。在电压外环使用了自抗扰控制(ADRC)技术,有效提高直流侧电压控制能力,缓解了超调的问题,使系统具有良好的动静态性能,并维持了直流侧电压的稳定。仿真和试验结果验证了所提控制策略的可行性和优越性。
[Key word]
[Abstract]
An active disturbance rejection passivity-based control strategy based on three level T-type neutral point clamped (TNPC) active power filte (APF) is proposed, which effectively solves the problem of poor control performance of traditional APF control strategy. The Euler Lagrange (EL) model of TNPC-APF is established. Based on the passivity of the system, a passivity-based controller of the current inner loop is designed by using the method of injection damping, which ensures the stability of the system in theory. Active disturbance rejection control (ADRC) is used in the outer voltage loop to effectively improve the control ability of DC side voltage, alleviate the problem of overshoot, make the system have good dynamic and static performance, and maintain the stability of DC side voltage. Simulation and experimental results verify the feasibility and superiority of the proposed control strategy.
[中图分类号]
[基金项目]
国家自然科学基金项目(51777012);北京市自然科学基金-教委联合资助项目(KZ201911232045);西安航空职业技术学院创新团队项目(KJTD21-002)