Title :
Small signal analysis of a novel type of ZVS DC-DC converter for fuel cell
Author :
An Xiang ; Ruitao Chen ; Shanli Wei ; Guoqing Xu
Author_Institution :
Dept. of Electr. Eng., Univ. of Tongji, Shanghai, China
Abstract :
This paper first introduces a novel type of current-fed push-pull ZVS dc/dc converter. Compared with the traditional Phase-shifted ZVS converter used in fuel cell system, this new converter can reduce the semiconductor switching losses and EMI noise and increase the circuit conversion efficiency. This paper also presents a detailed derivation of small-signal model using state space averaging technique. Then it designs the parameters of PI regulator for the current-loop and voltage-loop based on small-signal model. Finally, it gives the simulation model of the dual closed-loop control system with PSIM simulation software. The simulation results show that the designations of small-signal model and two controllers are feasible.
Keywords :
DC-DC power convertors; PI control; closed loop systems; electromagnetic interference; fuel cell power plants; zero voltage switching; EMI noise; PI regulator; PSIM simulation software; circuit conversion efficiency; current-fed push-pull ZVS DC-DC converter; dual closed-loop control system; fuel cell system; phase-shifted ZVS converter; small signal analysis; state space averaging technique; zero voltage switching; Capacitors; Equations; Fuel cells; Inductors; Integrated circuit modeling; Voltage control; Zero voltage switching; DC/DC converter; Small-signal analysis; ZVS;
Conference_Titel :
Information Science and Technology (ICIST), 2014 4th IEEE International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/ICIST.2014.6920537
