Design and development of high frequency high power transformer for renewable energy application

Abstract

This paper presents a design and fabrication of a high frequency transformer for 5 kW power rating. Within an operating frequency of 25kHz a MnZn P type core has been utilized. Two set of E-E geometry cores had to be stacked in order to achieve the calculated 64.14 cm4 of the WaAc volume. Test and validation of the designed shows that the prototype designed transformer had proven to be very compact, higher fill factor, smaller in size, lighter in weight if compared to other winding approaches which utilizing copper round wires. The measured overall losses of the transformer itself were remain below the expected value of 32.974 W. The efficiency of the transformer was found to be at 93% average. Overall test results also show that the design and implementation of this high frequency power transformer is applicable especially for renewable energy system.