철도차량용 3-level ANPC 드라이브 시스템의 적용 검토를 위한 다양한 PWM 기법 적용에 따른 성능 특성 비교

초록

This paper explores the performance optimization of a 3-level Active Neutral Point Clamped (ANPC) inverter, focusing on its application in high-voltage, high-precision motor control systems for railway vehicles. With the increasing demand for sustainable and efficient energy solutions in the transportation sector, improving inverter efficiency and reliability is crucial. We analyze the operational principles of the 3-level ANPC inverter and compare three Pulse Width Modulation (PWM) techniques: Sinusoidal PWM (SPWM), Space Vector PWM (SVPWM), and Reference Point Saturation-based PWM (RPS-B PWM). Simulations conducted using PSIM software demonstrate that the Reference Point Saturation-based PWM technique significantly reduces total harmonic distortion (THD) and enhances power efficiency compared to SPWM and SVPWM, making it highly suitable for railway vehicle applications.

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