Affiliation:
1. College of Electrical Engineering and New Energy, China Three Gorges University 1 , Yichang 443002, China
2. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology 2 , 300130 Tianjin, China
Abstract
The magnetic properties of electrical steel sheets are strongly affected by the Multi-Physics Factors (MPF), such as bending stress, working temperature, and magnetization patterns. To investigate the complex magnetic properties of the material under MPF magnetizing conditions, a magnetic property measurement system is first developed, considering the effect of bending stress, temperature loading, and non-sinusoidal magnetization waveforms. Then, the magnetic and the loss properties of Grain-Oriented (GO) electrical steels under MPF magnetizing conditions are measured and discussed. Obtained results showed that bending stress and non-sinusoidal magnetization waveforms are positively correlated with the loss properties of electrical steel sheets, and elevated temperatures can mitigate the effects of bending stress and harmonics on magnetic properties and losses.
Funder
National Natural Science Foundation of China