Title :
Modeling of ZVS PWM FB DC/DC Converter Based on Equivalent Switching Circuit Model
Author :
Sun, Tiecheng ; Liu, Hongpeng ; Gao, Peng ; Tang, Pinghua ; Zhang, Xueguang
Author_Institution :
Sch. of Electr. Eng. & Autom., Harbin Inst. of Technol.
Abstract :
According to the operating characteristics of the zero-voltage-switching (ZVS) pulse width modulation (PWM) full-bridge (FB) DC/DC converter, this paper deduces the model of the ZVS PWM FB DC/DC converter based on the equivalent switching circuit model. By using this model, the components´ parameters of the converter can be designed correctly according to the request of the dynamic response, and the performances of this kind of soft-switching converter can be improved further. The proposed modeling overcomes some problems of the state-space averaging method. The nonlinear phenomena of the converter can be analyzed. The magnitude-frequency and phase-frequency characteristics of the transfer function have been analyzed, and from the result of simulation, we know that the proposed modeling has many advantages such as clear physical meaning and simple calculation
Keywords :
DC-DC power convertors; PWM power convertors; dynamic response; equivalent circuits; state-space methods; zero voltage switching; dynamic response; equivalent switching circuit model; full-bridge DC/DC converter; magnitude-frequency characteristics; phase-frequency characteristics; pulse width modulation DC/DC converter; soft-switching converter; state-space averaging method; transfer function; zero-voltage-switching DC/DC converter; Buck converters; DC-DC power converters; Nonlinear dynamical systems; Power system modeling; Pulse width modulation; Pulse width modulation converters; Switches; Switching circuits; Switching converters; Zero voltage switching; bifurcation; equivalent model; full-bridge (FB) DC/DC converter; system modeling; zero-voltage-switching (ZVS);
Conference_Titel :
Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on
Conference_Location :
Dalian
Print_ISBN :
1-4244-0332-4
DOI :
10.1109/WCICA.2006.1712638
