Electricity: single generator systems – Automatic control of generator or driving means – Thermal conditions
Reexamination Certificate
2007-10-30
2007-10-30
Schuberg, Darren (Department: 2834)
Electricity: single generator systems
Automatic control of generator or driving means
Thermal conditions
C322S028000, C318S254100, C290S04000F
Reexamination Certificate
active
11409001
ABSTRACT:
A control apparatus for a vehicle generator includes a switch, a regulator, a fault condition detector, and a PWM signal generator. The switch is selectively turned on and off so as to intermittently excite the generator. The regulator controls on/off operation of the switch so as to bring an output of the generator into agreement with a target value. The fault condition detector detects a fault condition of the generator. The PWM signal generator generates and outputs a PWM signal that has a duty determined as a function of a duty of the on/off operation of the switch and a frequency determined based on if the fault condition of the generator is detected by the fault condition detector. Consequently, the control apparatus can inform an external control apparatus of the duty of the on/off operation of the switch and the fault condition of the generator with the single PWM signal.
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Maehara Fuyuki
Watanabe Kazuyuki
Cuevas Pedro J.
Denso Corporation
Oliff & Berridg,e PLC
Schuberg Darren
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