Arc fault detection scheme for 42-V automotive DC networks using current shunt

Introduction of higher dc system voltage distribution networks, such as the 42-V PowerNet in future passenger vehicles appears to be an unavoidable consequence of meeting the increasing future electrical power demand. Higher voltage electrical distribution networks in vehicles force considerable component and system changes regarding electrical safety and reliability. In the event of an arc fault, e.g., when a wire is pinched or cut, or disengaged terminals under load etc., the resulting current may be significantly lower than the trip current of the protection devices such as fuses and circuit breakers. In these cases either the fault is cleared late (depending on the time/current characteristics of the fuse) or, in some cases the fault may not be cleared at all. A cost effective arc fault detection scheme using input side current shunt was developed, built, and tested with different loads including motor loads to clear both parallel and series arc faults in a 42-V dc network. This paper presents the details of the developed arc fault detection scheme and test results under several fault conditions

[1]  Paul Raymund Nicastri,et al.  42V PowerNet: Providing the Vehicle Electrical Power for the 21st Century , 2000 .

[2]  Michael F. Matouka.  Design Considerations for Higher Voltage Automotive Electrical Systems , 1991 .

[3]  Thomas J. Schoepf,et al.  Mitigation of connector damage during disengaging DC loads using polymeric arc suppressor , 2005 .

[4]  T. Schoepf,et al.  Mitigation and analysis of arc faults in automotive DC networks , 2003, Proceedings of the Forty-Ninth IEEE Holm Conference on Electrical Contacts, 2003..

[5]  W. F. Rieder,et al.  Consequences for automotive relays of a 42 VDC power network in vehicles , 2000 .

[6]  M. Naidu,et al.  A high-efficiency, high power generation system for automobiles , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[7]  H. Murakami,et al.  Highly efficient brushless motor design for an air-conditioner of the next generation 42 V vehicle , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[8]  T. Schoepf,et al.  Disengaging connectors under automotive 42-VDC loads , 2004, IEEE Transactions on Components and Packaging Technologies.

[9]  M. Naidu,et al.  A 4 kW, 42 V induction machine based automotive power generation system with a diode bridge rectifier and a PWM inverter , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).