Methodologies for the design of LCC voltage-output resonant converters

Abstract: The paper presents five structured design methodologies for third-order LCC voltage output resonant converters. The underlying principle of each technique is based on an adaptation of a FMA equivalent circuit that accommodates the nonlinear behaviour of the converter. In contrast to previously published methods, the proposed methodologies explicitly incorporate the effects of the transformer magnetising inductance. Furthermore, a number of the methodologies allow the resonant-tank components to be specified at the design phase, thereby facilitating the use of standard off-the-shelf components. A procedure for sizing the filter capacitor is derived, and the use of error mapping, to identify parameter boundaries and provide the designer with a qualitative feel for the accuracy of a proposed converter design, is explored

State-variable modelling of LCC voltage-output resonant converters

A state-variable model for third-order leadless chip carrier (LCC) voltage-output resonant converters has been derived. This is demonstrated to be at least 40 times faster to simulate than an `equivalent' SPICE simulation of the circuit. Comparison of simulation results with those from an experimental resonant converter show that accuracy commensurate with SPICE simulations is obtaine