Vehicle Electrical Power Supply Systems and Their Impact on System Design

Abstract

The electrical power system is the vital lifeline to most of the control systems on modern automobiles. The following general trends are observed.

(a)

increased use of electrically actuated systems,

(b)

increased use of electronic control,

(c)

increasing requirements for high-integrity power supplies for safety critical systems,

(d)

increased average electrical power consumption (heating, actuation, control systems),

(e)

increased electrical demand at engine idle combined with reducing idling speeds,

(f)

increased interest in higher voltage systems,

(g)

electrical system problems a major cause of roadside breakdowns.

These trends clearly indicate major changes in the requirements of vehicle electrical power supply systems and will demand considerable activity from the vehicle industry in the next decade. An important aim of this paper is to illustrate and promote a systems view of electrical power while considering existing and future problems and opportunities.

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References

Givens

A technical history of the automobile, Part 2. Automot. Engng, July 1990, 98(7), 47–48.

West

J. G. W.

Powering up—a higher system voltage for cars. IEE Rev., January 1989, 35(1), 29–32.

Paulsen

J. J.

The state of automotive electronics in the year 2000. Seventh International IMechE Conference on Automotive electronics, London, October 1989, paper C391/KN1, p. 9 (Mechanical Engineering Publications, London).

IEC Standard 479-1 Effects of current passing through the human body. Part 1, general aspects, 1984 (International Electrochemical Commission).

IEC Standard 479-2 Effects of current passing through the human body. Part 2, special aspects, 1987 (International Electrochemical Commission).

ISO/DIS 6469.2 Electric road vehicles—specifications. UDC 629.113.6, 1989.

SAE information report. SAE Committee on Dual/High Voltage Vehicle Electrical Systems, 28 May 1991.

Summary fire statistics United Kingdom 1989. UK Home Office Statistical Department, 27 November 1990.

Jarrett

B. A.

Electronic systems of the future automobile. Keynote address at Third International Conference on Automotive electronics, London, October 1981 (Mechanical Engineering Publications, London).

10.

Jarrett

B. A.

Electrical systems for future automobiles. News Conference, Cobo Hall, Detroit, 25 February 1986.

11.

Jarrett

B. A.

West

J. G.

Dual voltage electrical systems for future autos. Design News, 6 October 1986, pp. 140–146.

12.

Attia

A. I.

Rowlette

J. J.

The development of a new sealed bipolar lead acid battery. Proceedings of 33rd Symposium on Power sources, Cherry Hill, New Jersey, 1988.

13.

Steward

L. L.

Bennion

D. N.

A high power density bipolar electrode for a lead-acid battery. Extended Abstr. Electrochem. Soc., 1990, 90(2), 14.

14.

Vidas

R. A.

The bipolar battery at Johnson Controls Inc. Proceedings of 34th Symposium on Power sources, Cherry Hill, New Jersey, June 1990.

15.

Schatz

The heat battery, a latent heat store for mass production. SAE Congress, SAE paper 910305, February 1991.

16.

Holt

M. J.

Design tools for electric power systems. Autotech 89, Birmingham, England, November 1989, paper C399/36 (Institution of Mechanical Engineers, London).

17.

Holt

M. J.

Automotive electrical power system simulation (AEPSS). IEE Colloquium on Vehicle electrical power management and smart alternators, London, April 1988.

18.

Holt

M. J.

Predicting load balance and electrical system performance. Seventh International IMechE Conference on Automotive electronics, London, October 1989, paper C391/010 (Mechanical Engineering Publications, London).