Title :
Dynamic analysis of hysteresis control strategy based on ripple characteristics
Author :
Jianfeng Dai ; Jinbin Zhao ; Keqing Qu ; Fen Li ; Wei Cao
Author_Institution :
Coll. of Electr. Eng., Shanghai Univ. of Electr. Power, Shanghai, China
Abstract :
This paper propose a fast transient buck converter using hysteresis PWM control, which is based on output ripple voltage and inductor ripple current for charging and discharging characteristics of capacitor C. The proposed control strategy is very simple and solves the compensation problem of the error amplifier in conventional voltage PWM control. It achieves both faster transient response and quasi switching frequency to meet the challenges of the load. At last, the steady-state and dynamic operation of the proposed control strategy are analyzed and verified by simulation and experimental results.
Keywords :
PWM power convertors; amplifiers; capacitors; hysteresis; inductors; switching convertors; transient response; amplifier error compensation; capacitor charging characteristics; capacitor discharging characteristics; dynamic operation; fast transient buck converter; hysteresis PWM control strategy dynamic analysis; inductor ripple current; quasiswitching frequency; ripple voltage; steady-state operation; transient response; Capacitors; Hysteresis; Inductors; Radio frequency; Switching frequency; Transfer functions; Voltage control;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2014 IEEE
Conference_Location :
Pittsburgh, PA
DOI :
10.1109/ECCE.2014.6953911
