Iron loss characteristics of motors fed by fast switching GaN‐FET inverters

Iron losses generated in a motor made of nonoriented electrical steel and driven by an inverter consisting of fast switching power semiconductor devices, GaN‐FETs were studied. The rectangular voltage pulses from the pulse width modulation applied to the motor generate not only a fundamental current...

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Bibliographic Details
Published in:Electrical engineering in Japan 2021-06, Vol.214 (2), p.n/a
Main Authors: Naitoh, Haruo, Sugimoto, Takaya, Fujisaki, Keisuke
Format: Article
Language:English
Subjects:
Carrier frequencies
carrier harmonics
Core loss
Electrical steels
Gallium nitrides
GaN‐FET
Inverters
iron loss
Power semiconductor devices
Pulse duration modulation
PWM inverter
resonance
Resonant frequencies
ringing
Switching
Voltage pulses
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Summary:Iron losses generated in a motor made of nonoriented electrical steel and driven by an inverter consisting of fast switching power semiconductor devices, GaN‐FETs were studied. The rectangular voltage pulses from the pulse width modulation applied to the motor generate not only a fundamental current but also harmonic currents. One of them increases considerably at the resonant frequency of the L, R, and C components in the motor. The phenomenon is called ringing. The ringing current, as well as the other currents, result in their respective iron losses. This study experimentally confirms that ringing occurs in the motor and quantitatively evaluates the iron loss related to it. The proportional dependence of the loss on the carrier frequency of PWM is found out.
ISSN:0424-7760
1520-6416
DOI:10.1002/eej.23304