Accurate calorimetric power loss measurement for efficient power converters

Abstract

The calorimetric power loss measurement is introduced for securing both higher accuracy measurement and faster measurement time. To reduce measurement accuracy error, copper leakage loss of wires is taken into consideration. To save measurement time, balancing relation between flow rate and temperature rise is also taken into consideration. Flow rate and temperature rise are largely dependent on sensor resolutions. To satisfy faster measurement time, high resolution sensors are extremely required. By balancing relation between flow rate and temperature rise, the maximized flow rate can be calculated. This effectiveness is verified through theoretical and experimental analyses.