Electricity: single generator systems – Automatic control of generator or driving means – Voltage of generator or circuit supplied
Patent
1979-09-06
1981-06-23
Truhe, J. V.
Electricity: single generator systems
Automatic control of generator or driving means
Voltage of generator or circuit supplied
322 60, 322 73, 361 21, 320 64, H02P 930
Patent
active
042753449
ABSTRACT:
In a voltage control apparatus for an electric generator (1) for vehicles including an armature winding (3), an exciting coil (4), a rectifier (2) for rectifying an a.c. output from the armature winding, and a voltage regulator (5), the voltage regulator comprises a differential amplifier circuit (26) producing a detected voltage corresponding to a difference between a battery charging voltage and a reference voltage, a comparator circuit (30) comparing the detected voltage with a triangular waveform voltage generated at constant periods and producing a pulsed output voltage, a first driver circuit (51) effecting duty-factor-control of an exciting current flowing through the exciting coil in response to the pulsed output voltage, and an initial excitation circuit (32) for causing a predetermined small initial exciting current to flow through the exciting coil intermittently during a time interval after the start of the electric generator.
REFERENCES:
patent: 3599080 (1971-08-01), Bennett
patent: 3820009 (1974-06-01), Itoh et al.
patent: 3984755 (1976-10-01), Lehnhoff et al.
patent: 4044296 (1977-08-01), Dhyanchand et al.
Akita Yoshio
Asahi Taro
Banzai Keiichiro
Itoh Katsumi
Iwaki Katsutaro
Nippondenso Co. Ltd.
Redman John W.
Truhe J. V.
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