The application of power electronics to the loads of automotive electrical systems is briefly reviewed in Section II. These leads provide improved performance and new features, but also lead to an increase in the demand of electrical power. The present and future automotive electrical power systems are discussed in Section III. The power systems of the future vehicles will provide increased electrical power, multiple output voltages, integration of power generation and engine cranking functions and regenerative braking. The primary focus of the paper is on the application of power electronics to automotive electrical systems. However, batteries and electrical machines form an integral part of these systems and have a significant effect on the selection and design of the electrical power system of a vehicle. A discussion on batteries and electrical machines for automotive power systems is given in Section IV. A high-power electrical system requires the system voltage to be high for high-efficiency operation. Also, different loads require different voltages for efficient operation and cost-effective designs. The power system architecture can be classified into centralized and distributed architectures. The architecture can be further classified into dc, low-frequency ac and high-frequency ac architectures. These architectures are discussed in Section V in terms of their relative advantages and drawbacks for automotive applications. An electrical power system that combines distributed architecture with multiplexing is discussed in Section Vl. The electrical power systems discussed in this paper are for passenger cars and light-duty trucks. However, the concepts described are applicable to the other types of vehicles also. It may be noted that a new generation of electrical power systems will not completely replace the present power system. The present power system will continue to meet the needs of vehicies in many parts of the world, since customer expectations for new features and functions and government regulations for vehicles vary throughout the world.


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    Title :

    Power electronics in automotive electrical systems


    Additional title:

    Leistungselektronik für die Kraftfahrzeugelektrik


    Contributors:
    Khan, I.A. (author)


    Publication date :

    1996


    Size :

    10 Seiten, 14 Bilder, 11 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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