A temperature-controlled system for loss measurement of transformer used in switched-mode power supply

The switch-mode power supply (SMPS) is being widely used in various fields. The reliability of SMPS is directly affected by the degradation and failure of magnetic component of transformer. It is well known that the loss of the magnetic component of transformer consist of iron loss and copper loss. In this paper, The pros and cons of several common loss measurement methods are discussed and a brief overview of temperature-controlled system for loss measurement of transformer in SMPS is proposed. The system can achieve these goals, within specified flux density and high frequency ranges, and at different temperatures, with high speed and accuracy, then MATLAB programming for data analysis and loss calculation. By doing this, The system can rapidly judge whether the damage of SMPS is caused by the loss of magnetic component.