The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles
The large dv/dt and di/dt outputs of power devices in DC-fed motor drive systems in electric vehicles (EVs) always introduce conducted electromagnetic interference (EMI) emissions and may lead to motor drive system energy transmission losses. The effect of distributed parameters on conducted EMI fro...
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| Format: | Article |
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MDPI AG
2016-12-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/10/1/1 |
| _version_ | 1811185114687733760 |
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| author | Li Zhai Liwen Lin Xinyu Zhang Chao Song |
| author_facet | Li Zhai Liwen Lin Xinyu Zhang Chao Song |
| author_sort | Li Zhai |
| collection | DOAJ |
| description | The large dv/dt and di/dt outputs of power devices in DC-fed motor drive systems in electric vehicles (EVs) always introduce conducted electromagnetic interference (EMI) emissions and may lead to motor drive system energy transmission losses. The effect of distributed parameters on conducted EMI from the DC-fed high voltage motor drive systems in EVs is studied. A complete test for conducted EMI from the direct current fed(DC-fed) alternating current (AC) motor drive system in an electric vehicle (EV) under load conditions is set up to measure the conducted EMI of high voltage DC cables and the EMI noise peaks due to resonances in a frequency range of 150 kHz–108 MHz. The distributed parameters of the motor can induce bearing currents under low frequency sine wave operation. However the impedance of the distributed parameters of the motor is very high at resonance frequencies of 500 kHz and 30 MHz, and the effect of the bearing current can be ignored, so the research mainly focuses on the distributed parameters in inverters and cables at 500 kHz and 30 MHz, not the effect of distributed parameters of the motor on resonances. The corresponding equivalent circuits for differential mode (DM) and common mode (CM) EMI at resonance frequencies of 500 kHz and 30 MHz are established to determine the EMI propagation paths and analyze the effect of distributed parameters on conducted EMI. The dominant distributed parameters of elements responsible for the appearing resonances at 500 kHz and 30 MHz are determined. The effect of the dominant distributed parameters on conducted EMI are presented and verified by simulation and experiment. The conduced voltage at frequencies from 150 kHz to 108 MHz can be mitigated to below the limit level-3 of CISPR25 by changing the dominant distributed parameters. |
| first_indexed | 2024-04-11T13:23:54Z |
| format | Article |
| id | doaj.art-c82a88ca94fa4fd49d95981d41139a37 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T13:23:54Z |
| publishDate | 2016-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c82a88ca94fa4fd49d95981d41139a372022-12-22T04:22:07ZengMDPI AGEnergies1996-10732016-12-01101110.3390/en10010001en10010001The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric VehiclesLi Zhai0Liwen Lin1Xinyu Zhang2Chao Song3National Engineering Laboratory for Electric Vehicle, Beijing Institute of Technology, Beijing 100081, ChinaNational Engineering Laboratory for Electric Vehicle, Beijing Institute of Technology, Beijing 100081, ChinaBeijing Institute of Radio Metrology and Measurement, Beijing 100854, ChinaNational Engineering Laboratory for Electric Vehicle, Beijing Institute of Technology, Beijing 100081, ChinaThe large dv/dt and di/dt outputs of power devices in DC-fed motor drive systems in electric vehicles (EVs) always introduce conducted electromagnetic interference (EMI) emissions and may lead to motor drive system energy transmission losses. The effect of distributed parameters on conducted EMI from the DC-fed high voltage motor drive systems in EVs is studied. A complete test for conducted EMI from the direct current fed(DC-fed) alternating current (AC) motor drive system in an electric vehicle (EV) under load conditions is set up to measure the conducted EMI of high voltage DC cables and the EMI noise peaks due to resonances in a frequency range of 150 kHz–108 MHz. The distributed parameters of the motor can induce bearing currents under low frequency sine wave operation. However the impedance of the distributed parameters of the motor is very high at resonance frequencies of 500 kHz and 30 MHz, and the effect of the bearing current can be ignored, so the research mainly focuses on the distributed parameters in inverters and cables at 500 kHz and 30 MHz, not the effect of distributed parameters of the motor on resonances. The corresponding equivalent circuits for differential mode (DM) and common mode (CM) EMI at resonance frequencies of 500 kHz and 30 MHz are established to determine the EMI propagation paths and analyze the effect of distributed parameters on conducted EMI. The dominant distributed parameters of elements responsible for the appearing resonances at 500 kHz and 30 MHz are determined. The effect of the dominant distributed parameters on conducted EMI are presented and verified by simulation and experiment. The conduced voltage at frequencies from 150 kHz to 108 MHz can be mitigated to below the limit level-3 of CISPR25 by changing the dominant distributed parameters.http://www.mdpi.com/1996-1073/10/1/1electric vehicleDC-fedmotor drive systemconducted electromagnetic interference (EMI)distributed parameter |
| spellingShingle | Li Zhai Liwen Lin Xinyu Zhang Chao Song The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles Energies electric vehicle DC-fed motor drive system conducted electromagnetic interference (EMI) distributed parameter |
| title | The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles |
| title_full | The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles |
| title_fullStr | The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles |
| title_full_unstemmed | The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles |
| title_short | The Effect of Distributed Parameters on Conducted EMI from DC-Fed Motor Drive Systems in Electric Vehicles |
| title_sort | effect of distributed parameters on conducted emi from dc fed motor drive systems in electric vehicles |
| topic | electric vehicle DC-fed motor drive system conducted electromagnetic interference (EMI) distributed parameter |
| url | http://www.mdpi.com/1996-1073/10/1/1 |
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