Publication

Joon-Seok Kim, Do-Hyeng Kim, June-Hee Lee, and June-Seok Lee, "Smooth Pulse Number Transition Strategy Considering Time Delay in Synchronized SVPWM," IEEE Transaction on Power Electronics, vol. 38, no. 2, pp. 2252-2261, Feb. 2023.

2023
PEEMS
  • Oct. 4, 2023

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1. Authors: Joon-Seok Kim, Do-Hyeng Kim, June-Hee Lee, and June-Seok Lee
2. Title: Smooth Pulse Number Transition Strategy Considering Time Delay in Synchronized SVPWM
3. Journal: IEEE Transaction on Power Electronics
4. Vol/no/pp: vol. 38, no. 2, pp. 2252-2261
5. Date: Feb. 2023
6. Abstract
: In high power motor drive systems, synchronized space vector pulsewidth modulation (synchronized SVPWM) is widely used to guarantee stable control performance. Synchronized SVPWM has a characteristic that the switching frequency varies abruptly when the pulse number transitions. This article proposes a pulse number transition point at which the phase difference is minimized to remove the phase difference of the sampling point that appears during synchronized SVPWM control. In addition, for a smooth pulse number transition of synchronized SVPWM, a compensation method for the magnitude and phase error of the inverter output voltage due to the time delay and a method of removing the existing phase difference without using a phase-locked loop are proposed in consideration of the characteristic of changing switching frequency. The validity and the implementation of the proposed method are verified by experimental results using a high-power inverter driving 332 kW interior permanent magnet synchronous motor (IPMSM).