Publication

Eun-Woo Lee, Tae-Hyeong Kim, Do-Hyeon Kim, and June-Seok Lee, "Torque-Based Discontinuous PWM Method for Switch Power Loss Reduction in Five-Leg Inverter," The Transactions of the Korean Institute of Power Electronics, vol. 28, no. 4, pp. 269-279, Aug. 2023.

2023
PEEMS
  • Aug. 9, 2023

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1. Authors: Eun-Woo Lee, Tae-Hyeong Kim, Do-Hyeon Kim, and June-Seok Lee
2. Title: Torque-Based Discontinuous PWM Method for Switch Power Loss Reduction in Five-Leg Inverter
3. Journal:  The Transactions of the Korean Institute of Power Electronics
4. Vol/no/pp: vol. 28, no. 4, pp. 269-279
5. Date:  Aug. 2023
6. Abstract
: This study proposes a torque-based discontinuous pulse width modulation (TB-DPWM) method for a five-leg inverter driving two induction motors to maximize the power loss reduction when the two motors have different torque values. This study initially proposed the rotation carrier-based DPWM (CB-DPWM) method to increase the efficiency of the inverter by reducing the switching losses of the switches. However, the rotation CB-DPWM method could not maximize the power loss reduction when the torque values of the two motors were different. Therefore, this study proposes the TB-DPWM method to maximize the power loss reduction under the unbalanced torque condition. The proposed method can calculate the offset voltage for clamping the reference voltage by considering the torque magnitude of the two motors. This study verifies the effectiveness of the proposed method using the simulation and experiment results.