Modification of Permanent Magnet Synchronous Motor Drive Mechanism of SF6 HVCBs of 330/132kV Transmission Substation
Abstract
This paper presents an improved drive mechanism for Sulphur Hexafluoride (SF6) High Voltage Circuit Breakers (HVCBs) deployed in 330/132kV transmission substations. The proposed system replaces the conventional servo-based permanent magnet synchronous motor (PMSM) with a stepper motor–based PMSM configuration to overcome challenges associated with inadequate holding torque and delayed tripping response. The modified drive mechanism was modeled and simulated using MATLAB/Simulink. Simulation results indicate that the proposed system delivers a peak torque of 120 Nm using a 10:1 gear reduction ratio, exceeding the required breaker load torque of 75 Nm. Furthermore, a reduction in tripping time of approximately 25% was achieved, demonstrating improved fault-clearing performance. The proposed mechanism enhances operational reliability, torque stability, and efficiency of SF6 HVCBs in high-voltage power systems.
Keywords
SF6 Circuit Breaker, Permanent Magnet Synchronous Motor, Stepper Motor, Holding Torque, High Voltage Substation.
Citations
IRE Journals:
Umaru Shettima Abdullahi, Musa Abdulkadir, Modu Abba-Gana, Abdulkadir Ali Warude, Adamu Umar "Modification of Permanent Magnet Synchronous Motor Drive Mechanism of SF6 HVCBs of 330/132kV Transmission Substation" Iconic Research And Engineering Journals Volume 9 Issue 8 2026 Page 2059-2065 https://doi.org/10.64388/IREV9I8-1714557
IEEE:
Umaru Shettima Abdullahi, Musa Abdulkadir, Modu Abba-Gana, Abdulkadir Ali Warude, Adamu Umar
"Modification of Permanent Magnet Synchronous Motor Drive Mechanism of SF6 HVCBs of 330/132kV Transmission Substation" Iconic Research And Engineering Journals, 9(8) https://doi.org/10.64388/IREV9I8-1714557
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