混合有源滤波在直流磁铁电源整流装置中的应用

针对直流磁铁电源的并联12脉波整流电路进行分析,而12脉波整流装置产生的主要特征谐波由无源滤波器滤除,有源部分使用注入式电路,以抑制无源支路和电网等效电感产生的谐振现象并可以显著降低有源装置的容量。而针对瞬时无功功率理论的不足,谐波电流检测采取了实时性更好的单位功率因数法(UPF)。最后对整个整流装置和串联谐振注入式混合有源滤波装置进行了simulink仿真,仿真结果表明了该磁铁电源的综合补偿系统的可行性和有效性。

Application of Hybrid Active Filter in DC Magnet Power Supply Rectifying Devices

The parallel 12-pulse rectifying circuit of DC magnet power supply was analyzed. The passive filter can filter main characteristic harmonic generated from 12-pulse rectifying devices, the active filter part adopts the injection type topology to suppress the resonance between the passive branch and the equivalent inductance power grid and reduce the capacity of the active devices significantly. Aiming at the deficiency of instantaneous reactive power theory, a better real-time characteristic unity power factor approach (UPF) for harmonic current detection technique was adopted. At last, rectifying devices and series resonance hybrid active filter devices with injection circuit were simulated by Simulink, the simulation results indicate feasibility and validity of the magnet power supply integrated compensation system.