A New High-Frequency Resonant PWM Inverter-Linked DC-DC Converter Utilizing Bi-Mos Power Devices and its Performance Evaluations

This paper presents the softwares and hardwares for a new switched-mode DC-DC converter circuit which incorporates a single symmetrical PWM control-based voltage-fed series resonant high-frequency inverter as a sub-system for the internal power conversion and processing stage. In the first place, it refers to a novel circuit topology of the series resonant type high-frequency inverter linked DC-DC converter and its control implementation system, followed by the operating principle and unique features. In the second place, it develops the computer-aided analytical algorithm theory for the presented circuit, making it widely applicable, by introducing various characteristic circuit parameters and control variables, and at the same time, quantitatively explains the circuit behavior by use of the computer simulation results. In the third place, it describes the open-loop operating regulation chara cteristics in steady-state operation on the basis of circuit parameters and control variables. Finally, it demonstrates the test power converter circuit using the latest bipolar type FET (IGT) power modules and makes the comparison between the experimental and theoretical results.