Comparative Analysis of Magnetic Core Loss Measurement Methods with Arbitrary Excitations

Magnetic cores are essentially significant in high frequency switching transformers. The core loss is an important characteristic parameter of the switching transformer modeling, loss estimation and thermal design, etc. Therefore, it is essential to measure the core loss accurately. In this paper, a brief review about the existing core loss measurement methods under arbitrary excitation is given. The accuracy and applicability of each method are discussed theoretically and verified experimentally, especially at high frequencies up to several MHz. The paper provides appropriate core loss measurement methods in different situations for both scholars and engineers.