Measurement and Result Analysis of Magnetic Properties of Electrical Steel Sheet Under PWM Excitation
With the rapid development of electric power and electronic technology,inverter has become an irreplaceable part of the motor system.However,the excitation voltage supplied by inverter contains a large number of high-order harmonics,which makes the loss of the motor increase greatly,the adverse influence is produced to the heating and efficiency of motor.Therefore,in order to get the optimal design and increase efficiency of motor,it is necessary to explore the magnetic properties and iron loss of sili-con steel under actual working condition.In this paper,the magnetic properties of non-oriented grain electrical steel sheet under PWM excitation is measured with the improved Epstein frame,and the data of iron loss is got.Meanwhile,the effect of PWM modu-lation parameters for the iron loss is analyzed and discussed.
electrical steel sheetPWM excitationmodulation parametersiron loss
国家科技期刊平台
NSTL
万方数据
