电能回馈装置与二极管整流装置并联研究

Research on Electrical Energy Feedback Device and Diode Rectify Device in Parallel

通用变频器中常用二极管整流装置进行整流,存在无电能回馈功能的缺点。三相电能回馈装置作为一个独立、外挂式的回馈装置与二极管整流装置并联使用,可实现变频器回馈功能。然而在装置进入回馈状态后,因为两种装置并联会导致二极管整流装置存在脉冲电流通过的问题,影响电网及周边电子设备。提出了一种改进拓扑结构结合滞环电流控制的解决方法消除脉冲电流。最后,通过仿真分析及实际应用证明了该方法的有效性和正确性。

General inverter often uses the diode rectifier to rectify current with defect of no electrical energy feedback function.Three-phase electrical energy feedback device as an independent feedback device,hanging outside with diode rectify device in parallel,may realize the inverter with feedback function.However when the device tumning into a feedback state,because of the two kinds of devices in parallel,it causes a problem that pulse current through the diode rectify device affects the power grid and the surrounding electronic equipments.This paper proposes a kind of improved topology structure combined with hysteresis current control solution to eliminate pulse current.Finally the simulation analysis and practical application prove the validity and the correctness of this scheme.