DESIGN METHOD AND DESIGN SUPPORT APPARATUS FOR VOLTAGE-RESONANCE TYPE CONVERTER

PURPOSE:To shorten the design period of the apparatus, by deciding the equivalent circuit of a converter in such manner that said circuit corresponds to the commutation overlapping period and power transmission period of a full-wave rectifier circuit, and by analyzing the performance characteristic of said converter and determining its circuit constant in accordance therewith. CONSTITUTION:In a voltage-resonance type push-pull converter to be designed, a DC power supply Ei is symmetrically connected with the primary winding of a transformer T via a DC reactor Li and a pair of switching elements Q1, Q2, and a resonating capacitor Cr is juxtaposed with said primary winding to form a resonance circuit. Said switching elements Q1, Q2 are alternately ON-OFF driven by a detection winding Ng simultaneously with the zero voltage point of a resonance voltage to supply a load R with power from their secondary winding via a magnetic amplifier circuit MA, a full-wave rectifier circuit and the like. Also, the design support apparatus of said converter is composed of a data input means 1, a performance analysis means 2, a resonance current operating means 3, a circuit constant operating means 4, and a data output means 5 so that characteristics of the converter are analyzed and its design data are obtained in the manner of corresponding to its commutation overlapping period and power transmission period.