Magnetostrictive Properties of the Grain-Oriented Silicon Steel Sheet under DC-Biased and Multisinusoidal Magnetizations
Xiaojun Zhao,
Yutong Du,
Yang Liu,
Zhenbin Du,
Dongwei Yuan,
Lanrong Liu
Affiliations
Xiaojun Zhao
Department of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China
Yutong Du
Department of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China
Yang Liu
State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute Co. Ltd., Beijing 102211, China
Zhenbin Du
Hebei Provincial Key Laboratory of Electromagnetic & Structural Performance of Power Transmission and Transformation Equipment, Baoding 071056, China
Dongwei Yuan
Department of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China
Lanrong Liu
Hebei Provincial Key Laboratory of Electromagnetic & Structural Performance of Power Transmission and Transformation Equipment, Baoding 071056, China
As an intrinsic property, elasticity of soft material is affected significantly by the externally applied alternating magnetic field. Magnetostrictive properties of the grain-oriented (GO) silicon steel under DC-biased and multisinusoidal magnetizations are measured by using a laser-based measuring system. Magnetostriction curves of the GO silicon steel sheet under different magnetizations are obtained and the influence of frequency and DC bias on the magnetostrictive property is observed and analyzed based on the measured data. In addition, the spectrum of magnetostriction under harmonic magnetization is obtained, and the acoustic noise level of the GO silicon steel sheet represented by the A-weighted decibel value caused by magnetostriction is measured under DC-biased and multisinusoidal magnetizations. The measurement results are applied to the simulation of the three-limb laminated core model, and the effects of DC bias and harmonics on magnetic flux density and displacement are analyzed.
