Title :
A new feed-forward control strategy for three-phase voltage source PWM rectifier based on αβ transform
Author :
Gao Na ; Qu Zhihong
Author_Institution :
Xi´an Railway Vocational & Tech. Inst., Xi´an, China
Abstract :
In order to meet the needs of the advanced fighter jet´s start by using a three phase AC/DC converter on the ground, predictive current control strategy is selected to design a feed-forward control strategy by αβ transform based on the power balance relationship between the input and output of rectifier. Feed-forward signal includes the information of both grid voltage and DC side load. Power balance between the input and output can be maintained by adjusting AC side currents. The principle and working process of the PS-FB-ZVS converter is studied in detail, and its small signal model is established and analyzed, and then the control system based on average current mode and a phase shift PWM generation method are designed. The results verify the proposed analysis and design.
Keywords :
AC-DC power convertors; PWM rectifiers; aircraft; control system synthesis; electric current control; predictive control; starting; transforms; zero voltage switching; αβ transform; AC side currents; DC side load; PS-FB-ZVS converter; advanced fighter jet; average current mode; control system; feed-forward control strategy; feed-forward signal; grid voltage; phase shift PWM generation method; power balance relationship; predictive current control; pulse width modulation; small signal model; start; three phase AC/DC converter; three-phase voltage source PWM rectifier; zero voltage switching; PI controller; PWM rectifier; feed-forward control; predictive current control;
Conference_Titel :
Control Conference (CCC), 2013 32nd Chinese
Conference_Location :
Xi´an
