A Common DC Bus Circulating Current Suppression Method for Motor Emulators of New Energy Vehicles
In contrast to the conventional topology, wherein the Device Under Test (DUT) controller and the electric motor emulator (EME) are powered by the DC (Direct Current) voltage source independently, the common DC bus topology necessitates a single power supply. This reduces the cost and complexity of t...
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/2075-1702/13/1/51 |
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| author | Haonan Sun Dafang Wang Qi Li Yingkang Qin |
| author_facet | Haonan Sun Dafang Wang Qi Li Yingkang Qin |
| author_sort | Haonan Sun |
| collection | DOAJ |
| description | In contrast to the conventional topology, wherein the Device Under Test (DUT) controller and the electric motor emulator (EME) are powered by the DC (Direct Current) voltage source independently, the common DC bus topology necessitates a single power supply. This reduces the cost and complexity of the motor emulator system, making it more favorable for large-scale industrial applications. However, this topology introduces significant circulating current issues in the system. A common DC bus circulating current suppression method is proposed in this paper for the motor emulator. First, the mechanism of zero-sequence circulating current generation in the common DC bus topology is analyzed and the expression for the system’s zero-sequence voltage difference is derived. Then, a control method based on a Hybrid PWM (Pulse Width Modulation) strategy that unifies SPWM (SIN Pulse Width Modulation) and SVPWM (Space Vector Pulse Width Modulation) is proposed, which has been shown to be effective in suppressing the zero-sequence circulating current in a motor emulator system with a common DC bus topology. The proposed control method has been experimentally validated using a motor emulator system. |
| format | Article |
| id | doaj-art-beaee2dfaf184e1ba4eeb3d7c346edd3 |
| institution | Kabale University |
| issn | 2075-1702 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Machines |
| spelling | doaj-art-beaee2dfaf184e1ba4eeb3d7c346edd32025-01-24T13:39:16ZengMDPI AGMachines2075-17022025-01-011315110.3390/machines13010051A Common DC Bus Circulating Current Suppression Method for Motor Emulators of New Energy VehiclesHaonan Sun0Dafang Wang1Qi Li2Yingkang Qin3Automotive Engineering College, Harbin Institute of Technology, Weihai 264209, ChinaAutomotive Engineering College, Harbin Institute of Technology, Weihai 264209, ChinaAutomotive Engineering College, Harbin Institute of Technology, Weihai 264209, ChinaAutomotive Engineering College, Harbin Institute of Technology, Weihai 264209, ChinaIn contrast to the conventional topology, wherein the Device Under Test (DUT) controller and the electric motor emulator (EME) are powered by the DC (Direct Current) voltage source independently, the common DC bus topology necessitates a single power supply. This reduces the cost and complexity of the motor emulator system, making it more favorable for large-scale industrial applications. However, this topology introduces significant circulating current issues in the system. A common DC bus circulating current suppression method is proposed in this paper for the motor emulator. First, the mechanism of zero-sequence circulating current generation in the common DC bus topology is analyzed and the expression for the system’s zero-sequence voltage difference is derived. Then, a control method based on a Hybrid PWM (Pulse Width Modulation) strategy that unifies SPWM (SIN Pulse Width Modulation) and SVPWM (Space Vector Pulse Width Modulation) is proposed, which has been shown to be effective in suppressing the zero-sequence circulating current in a motor emulator system with a common DC bus topology. The proposed control method has been experimentally validated using a motor emulator system.https://www.mdpi.com/2075-1702/13/1/51motor emulatorcommon DC bus topologycirculating current suppressionmodulation algorithm |
| spellingShingle | Haonan Sun Dafang Wang Qi Li Yingkang Qin A Common DC Bus Circulating Current Suppression Method for Motor Emulators of New Energy Vehicles Machines motor emulator common DC bus topology circulating current suppression modulation algorithm |
| title | A Common DC Bus Circulating Current Suppression Method for Motor Emulators of New Energy Vehicles |
| title_full | A Common DC Bus Circulating Current Suppression Method for Motor Emulators of New Energy Vehicles |
| title_fullStr | A Common DC Bus Circulating Current Suppression Method for Motor Emulators of New Energy Vehicles |
| title_full_unstemmed | A Common DC Bus Circulating Current Suppression Method for Motor Emulators of New Energy Vehicles |
| title_short | A Common DC Bus Circulating Current Suppression Method for Motor Emulators of New Energy Vehicles |
| title_sort | common dc bus circulating current suppression method for motor emulators of new energy vehicles |
| topic | motor emulator common DC bus topology circulating current suppression modulation algorithm |
| url | https://www.mdpi.com/2075-1702/13/1/51 |
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