The excitation circuit according to the invention controls an excitation current (lexc) in an excitation winding (2) of an alternator by means of an on-board network voltage control loop (Vbat+, 3) of the vehicle, and comprises a first MOS power transistor (9) which is connected between a first positive supply terminal Vbat+ (6), and a first excitation terminal (7), and is controlled by the control loop by means of a first control circuit (10), a second MOS power transistor (11), which is connected between the first excitation terminal and a second excitation terminal (8) which is connected to a ground terminal (5) and acts as a free wheel diode, whilst being controlled by means of a second control circuit (12). According to the invention, the circuit additionally comprises a control loop (15) of a drain-source voltage (Vds) of the second transistor.


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    Title :

    EXCITATION CIRCUIT OF A MOTOR VEHICLE ALTERNATOR, VOLTAGE REGULATOR, AND ALTERNATOR WHICH INCORPORATES IT



    Publication date :

    2017-03-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H03K PULSE TECHNIQUE , Impulstechnik



    Excitation circuit of a motor vehicle alternator, voltage regulator, and alternator which incorporates it

    DE LAMARRE LAURENT / TISSERAND PIERRE / SARDAT PIERRE et al. | European Patent Office | 2018

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    Watkinson, J.R. | Tema Archive | 1978


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    Development of an Integral Microelectronic Alternator Voltage Regulator

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