Title :
Nonlinear optimisation tool for the full-bridge zero-voltage-switched DC-DC convertor
Author :
Lotfi, A.W. ; Chen, Q. ; Lee, F.C.
Author_Institution :
Dept. of Electr. Eng., Virginia Tech, Blacksburg, VA, USA
fDate :
9/1/1993 12:00:00 AM
Abstract :
The fundamental equations characterising the full-bridge zero-voltage-switched DC-DC convertor are utilised in a nonlinear design-optimisation routine. The design is subject to realistic constraints along with an objective function of minimal total and/or maximum efficiency. The routine is used to study the effects of switching frequency, leakage inductance and load range for zero-voltage switching on the efficiency and size. Maximum efficiency is shown to occur when zero-voltage switching is maintained in the immediate vicinity of full-load operation. Experimental measurements confirm computed predictions
Keywords :
bridge circuits; nonlinear network synthesis; optimisation; power convertors; switching circuits; DC-DC power convertor; ZVS; design; efficiency; leakage inductance; load range; network synthesis; nonlinear optimisation; switching frequency; zero voltage switching;
Journal_Title :
Electric Power Applications, IEE Proceedings B
