Copolar Synchronous Switching Method for BLDC Motor Control in EV Application
This paper proposes a new PWM switching method, called copolar switching, for synchronous rectification in brushless DC motors (BLDC). This method-integrates the benefits of both unipolar and bipolar switching, addressing the efficiency trade-off commonly observed in low-resistance BLDC drives. Unip...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/11058931/ |
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| author | Yueh-Tsung Shieh Gang-Ting Liou Shyr-Long Jeng Wei-Hua Chieng Jih-Sheng Lai Edward-Yi Chang |
| author_facet | Yueh-Tsung Shieh Gang-Ting Liou Shyr-Long Jeng Wei-Hua Chieng Jih-Sheng Lai Edward-Yi Chang |
| author_sort | Yueh-Tsung Shieh |
| collection | DOAJ |
| description | This paper proposes a new PWM switching method, called copolar switching, for synchronous rectification in brushless DC motors (BLDC). This method-integrates the benefits of both unipolar and bipolar switching, addressing the efficiency trade-off commonly observed in low-resistance BLDC drives. Unipolar switching is known to reduce current ripple and switching losses at low speeds, while bipolar switching enhances efficiency during high-speed operation due to faster recovery of freewheeling current. However, most existing methods statically adopt one scheme, leading to suboptimal performance across variable-speed conditions. The proposed copolar switching method combines unipolar switching at zero-speed for ripple-free conduction, and switches to bipolar mode at higher speeds to enable rapid energy feedback to the source. Therefore, it can be used in electric vehicles (EV) applications to increase the average power efficiency. The EV simulation in this paper identified there could be a 5% efficiency improvement. |
| format | Article |
| id | doaj-art-d028c59f4a6546ef95eaeff927ba2ecb |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-d028c59f4a6546ef95eaeff927ba2ecb2025-08-20T03:29:02ZengIEEEIEEE Access2169-35362025-01-011311672911674410.1109/ACCESS.2025.358425911058931Copolar Synchronous Switching Method for BLDC Motor Control in EV ApplicationYueh-Tsung Shieh0https://orcid.org/0009-0000-7495-9351Gang-Ting Liou1Shyr-Long Jeng2Wei-Hua Chieng3https://orcid.org/0000-0002-9207-2735Jih-Sheng Lai4https://orcid.org/0000-0003-2315-8460Edward-Yi Chang5https://orcid.org/0000-0003-1616-5240Department of Mechanical Engineering, National Yang Ming Chiao Tung University, Hsinchu, TaiwanDepartment of Mechanical Engineering, National Yang Ming Chiao Tung University, Hsinchu, TaiwanDepartment of Mechanical Engineering, Lunghwa University of Science and Technology, Taoyuan, TaiwanDepartment of Mechanical Engineering, National Yang Ming Chiao Tung University, Hsinchu, TaiwanDepartment of Electrical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, USADepartment of Material Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, TaiwanThis paper proposes a new PWM switching method, called copolar switching, for synchronous rectification in brushless DC motors (BLDC). This method-integrates the benefits of both unipolar and bipolar switching, addressing the efficiency trade-off commonly observed in low-resistance BLDC drives. Unipolar switching is known to reduce current ripple and switching losses at low speeds, while bipolar switching enhances efficiency during high-speed operation due to faster recovery of freewheeling current. However, most existing methods statically adopt one scheme, leading to suboptimal performance across variable-speed conditions. The proposed copolar switching method combines unipolar switching at zero-speed for ripple-free conduction, and switches to bipolar mode at higher speeds to enable rapid energy feedback to the source. Therefore, it can be used in electric vehicles (EV) applications to increase the average power efficiency. The EV simulation in this paper identified there could be a 5% efficiency improvement.https://ieeexplore.ieee.org/document/11058931/Copolar motor controlBLDC motorcascode GaN |
| spellingShingle | Yueh-Tsung Shieh Gang-Ting Liou Shyr-Long Jeng Wei-Hua Chieng Jih-Sheng Lai Edward-Yi Chang Copolar Synchronous Switching Method for BLDC Motor Control in EV Application IEEE Access Copolar motor control BLDC motor cascode GaN |
| title | Copolar Synchronous Switching Method for BLDC Motor Control in EV Application |
| title_full | Copolar Synchronous Switching Method for BLDC Motor Control in EV Application |
| title_fullStr | Copolar Synchronous Switching Method for BLDC Motor Control in EV Application |
| title_full_unstemmed | Copolar Synchronous Switching Method for BLDC Motor Control in EV Application |
| title_short | Copolar Synchronous Switching Method for BLDC Motor Control in EV Application |
| title_sort | copolar synchronous switching method for bldc motor control in ev application |
| topic | Copolar motor control BLDC motor cascode GaN |
| url | https://ieeexplore.ieee.org/document/11058931/ |
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