Research on the Suppression of Secondary Power Ripple in Single-Phase Pulse Rectifier Based on Improved Deadbeat-Repetitive Control

Jinkai Ai; Kewei Zhang; Zhenkui Dong

doi:10.54097/rr877182

Authors

Jinkai Ai
Kewei Zhang
Zhenkui Dong

DOI:

https://doi.org/10.54097/rr877182

Keywords:

Single-phase Pulse Rectifier, Secondary Power Ripple, Active Power Decoupling, Improved Deadbeat-Repetitive Control

Abstract

In order to solve the problems of increasing the conduction loss of power devices and decreasing the conversion efficiency caused by the secondary power ripple of the single-phase pulse rectifier of high-speed trains, a buck chopper active power decoupling loop is proposed to replace the LC filter loop, which absorbs the secondary pulsation power by increasing the pulsation of the energy storage capacitor and reduces the capacity of the energy storage capacitor to improve the power density of the system. It integrates and improved deadbeat-repetitive control without difference, improves the inherent cycle delay problem of repeated control, realizes the tracking of the second harmonic current without difference, and improves the dynamic performance of the system. Through the MATLAB/Simulink simulation platform, a simulation model of Buck chopper active power decoupling of single-phase pulse rectifier is established, and the harmonic content and load mutation response time are compared and analyzed, and the simulation results prove the correctness and feasibility of the theoretical analysis.

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