Abstract

LCL series resonant full bridge converter (SRFBC) is a new, high performance DC-DC converter. High frequency DC-DC resonant converters are widely used in many space and radar power supplies owing to their small size and light weight. The limitations of two element resonant topologies can be overcome by adding a third reactive element termed as modified series resonant converter (SRC). A three element resonant converter capable of driving voltage type and current type load with load independent operation is presented. These converters are analyzed by using the state space approach is presented. Pulse width modulation is employed to control and regulate the output voltage. The purpose of this paper is to study the performance of the three elements LCL series resonant full bridge converter with capacitive and inductive output filter under pulse width modulation keeping the switching frequency constant is presented. The LCL SRFB converter is simulated using PSPICE software and the results are verified experimentally on a prototype converter.

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