A novel ground fault detection method for electric vehicle powertrains based on a grounding resistor voltage analysis

Guerrero Granados, José Manuel and Navarro, G. and Platero Gaona, Carlos Antonio and Tian, P. and Blázquez, F. (2020). A novel ground fault detection method for electric vehicle powertrains based on a grounding resistor voltage analysis. "Ieee Transactions on Industry Applications" ; pp. 1-10. ISSN 0093-9994. https://doi.org/10.1109/TIA.2020.3000965.

Description

Title: A novel ground fault detection method for electric vehicle powertrains based on a grounding resistor voltage analysis
Author/s:
  • Guerrero Granados, José Manuel
  • Navarro, G.
  • Platero Gaona, Carlos Antonio
  • Tian, P.
  • Blázquez, F.
Item Type: Article
Título de Revista/Publicación: Ieee Transactions on Industry Applications
Date: June 2020
ISSN: 0093-9994
Subjects:
Freetext Keywords: Electric vehicles; Electrical fault detection; Fault location; Fault diagnosis; Power system protection
Faculty: E.T.S.I. de Minas y Energía (UPM)
Department: Energía y Combustibles
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The growing adoption of electric vehicles has recently attracted increasing attention of scientists and brought about pioneering research studies from various fields. Safety concerns particularly those regarding ground faults detection and protection, have extensively been addressed. Ground faults occur quite frequently in electric vehicles and they may be due to severe operation conditions, such as vibrations, twists or even crashes. Generally, the first ground fault is not dangerous, since the powertrain systems, namely, the DC bus where the batteries are connected, the power inverter and one or more AC machines, are generally ungrounded. The second ground fault, however, can produce malfunction in some systems, power loss or even serious damages. Locating the fault has often proved hard and time-consuming. For this reason, the present study focuses on developing a ground-fault detection method for electric vehicles capable of determining on which side, the DC or the AC, the ground fault is located. The method is based on the analysis of the voltage in a grounding resistor connected between the midpoint of the battery pack and ground. Based on the polarity and harmonics, it is possible to locate the ground fault. This method has been verified excellent results have been achieved using computer simulations and experimental tests in a 140-kW electronic power inverter fed by a 480 Vdc battery.

More information

Item ID: 63730
DC Identifier: http://oa.upm.es/63730/
OAI Identifier: oai:oa.upm.es:63730
DOI: 10.1109/TIA.2020.3000965
Official URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9112313&isnumber=4957013
Deposited by: Memoria Investigacion
Deposited on: 14 Sep 2020 09:24
Last Modified: 14 Sep 2020 09:24
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