Design And Optimization of A T-Type Converter based on A Nonlinear Programming Technique

Abstract

High efficiency and high power density are becoming increasingly popular in the design requirements of power electronic converters. In this paper, the design and optimization method of a three-phase T-type converter is discussed. Loss models of the converter are formulated by the conventional method. Switching frequency, peak flux density, number of turns, number of layers, etc., are optimized using a nonlinear programming technique for minimizing the overall converter loss. Simulation results prove that the loss models are reliable. The optimized converter has improved performance with a high efficiency of up to 99.47% and a low-temperature rise of fewer than 50 degrees Celsius on both inductors and semiconductor devices.