Inductive active filtering system and method suitable for low-voltage distribution network

The invention relates to an inductive active filtering system and method suitable for a low-voltage distribution network, in particular to an inductive active filtering technology DDYIAF matched with a Ddy connection transformer, and by establishing a circuit model and a mathematical model, harmonic suppression under load balance and unbalanced states is realized by applying harmonic damping control and zero impedance control strategies. Simulation results show that the feasibility of the induction active filtering technology under the load unbalance and balance state, the provided control strategy can effectively suppress harmonic waves, the filtering effect of the filtering device can be remarkably improved when a load side winding contains third harmonic waves, and the load unbalance phenomenon is improved to some extent. 一种适用于低压配网的感应有源滤波系统及方法，具体为一种配合Ddy联接变压器的感应有源滤波技术DDYIAF，通过建立电路模型和数学模型，应用谐波阻尼控制及零值阻抗控制策略实现负载平衡及不平衡状态下的谐波抑制。仿真结果表明感应有源滤波技术在负载不平衡及平衡状态下的可行性，所提控制策略能够有效抑制谐波，在负载侧绕组含有三次谐波时，也能显著提升滤波装置的滤波效果，且对负载不平衡现