新型混合式电力滤波装置电流源控制策略

Current source control strategy of hybrid power filter

为了实现谐波抑制及无功补偿等功能要求,提出了一种新型的混合式电力滤波装置,并对该装置的组成和工作原理进行了说明。针对该滤波装置的运行要求,提出了一种新型的电流源控制策略,对电流源控制策略中的3种情况即电流源开环、闭环、复合控制进行了详细分析,并针对这3种控制方式下电流源控制策略的控制特性进行了研究。得出了在电流源复合控制方式下,该装置对电网中的谐波能够进行有效抑制,同时对系统与混合式滤波装置间可能发生的谐振有较强的抑制能力,该系统的稳定性较好。通过仿真对电流源复合控制策略进行了分析,验证了该电流源控制策略在新型混合式电力滤波装置中的应用效果。

A novel HPF（Hybrid Power Filter） is presented for harmonics suppression and reactive power compensation and its topological structure and working principle are introduced. For its operational requirements, a novel current source control strategy is proposed and its three cases are analyzed： closed loop, open loop and complex control strategy. The control characteristics under three conditions are discussed in detail. It is concluded that, the complex current control strategy can obtain the best operational performance and the resonance between system and HPF can be suppressed with better system stability. The result of simulation with Matlab/Simulink verifies the application effect of HPF with complex control strategy.