Conference: 2021 한국자동차공학회 춘계학술대회
Authors: 임소연, 박수환, 김재현, 임명섭
DOI:
The fuel cell electric vehicle’s air compressor is driven by an ultra-high-speed(UHS) surface mounted permanent magnet synchronous motor(SPMSM). UHS SPMSM has a large electromagnetic losses due to high rotational speed. Motor losses increase the temperature inside the motor. Increased motor temperature can cause deterioration in motor performance. In addition, since the motor is driven by an inverter, pulse width modulation(PWM harmonic current is input to the motor. Since the PWM harmonic current increases the electromagnetic losses of the motor, it is necessary to analyze the effect of the PWM harmonic current on the temperature distribution of the motor. In this paper, the inverter simulation is conducted to predict the PWM harmonic current waveform, and the temperature distribution of the motor due to the PWM harmonic current is predicted through the lumped parameter thermal network (LPTN).