Iron Loss Measurements under PWM Excitation for Ring Cores Made of Ultrathin Electrical Steel Sheets for a Stator Core
Iron Loss Measurements under PWM Excitation for Ring Cores Made of Ultrathin Electrical Steel Sheets for a Stator Core
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定子铁芯超薄电工钢板环形铁芯 PWM 励磁下的铁损测量
DOI：
10.1109/icem49940.2020.9270980
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Daisuke Wakabayashi
中科院分区：
文献类型：
--
作者：
Mohachioro Oka;Hirofumi Kiyotake;Masato Enokizono;Daisuke Wakabayashi
利用商业电源正弦波驱动的感应电动机，通过改进电机所用的电钢板，铁损耗显著降低。然而，近年来，用于电动汽车的永磁电机和感应电机通常采用脉冲宽度调制（PWM）逆变器，该逆变器具有良好的可控性。在定子铁芯铁损耗增加了载波在PWM逆变器中使用。研究了在PWM逆变器励磁作用下，由三种厚度的电工钢板制成的环形铁芯试样的铁损。制备的电钢板厚度分别为0.08 mm、0.1 mm和0.35 mm。此外，本文还研究了在PWM激励下铁损评估时存在的一些问题。以PWM逆变器为例，研究了开关噪声和死区时间对铁损的影响。此外，还研究了载波频率、调制指数与铁损耗之间的关系。结果表明，即使在PWM激励下，超薄电工钢板的铁损也不会增加太多。
The iron loss of an induction motor powered by the sinusoidal wave of a commercial power source has been remarkably decreased by improving the electrical steel sheet used in a motor. However, in recent years, the permanent magnet motor and induction motor used in electric vehicles are often powered by a Pulse Width Modulation (PWM) inverter which shows good controllability. Iron loss in a stator core is increased by the carrier wave used in the PWM inverter. The iron loss of a ring core specimen made of electrical steel sheets of three kinds of thicknesses was evaluated under PWM inverter excitation. The thicknesses of the prepared electrical steel sheets were 0.08 mm, 0.1 mm, and 0.35 mm, respectively. In addition, in this paper, a number of problems that present when iron loss is evaluated under PWM excitation were investigated. For instance, the influence of switching-noise and dead-time of the PWM inverter on the iron loss were examined. Moreover, relationships between the carrier frequency, the modulation index and the iron loss were investigated. As a result, it was found that the iron loss of the ultrathin electrical steel sheet does not increase much even under PWM excitation.
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