Load Test Method Using Two Power Supplies for High-Frequency Transformers

This paper proposes a load test method for high-frequency transformers using two power supplies. In this method, the supplies need to supply only losses of transformer because is circulated between primary and secondary sides. Hence, can be performed on with capacity higher than that without requiring load. The experimental results show applied under 100 kHz sinusoidal voltage/current 50 VA/unit, which much smaller rated transformer, i.e., 900 VA. Furthermore, at all factors from 0 1. addition, proposed accuracy loss measurement improved compared existing obtains by subtracting output input transformer.