Voltage regulator for charger/generator

• Main Authors: MASHINO; KEIICHI, TAKEI; SHIGEKAZU
• Format: Patent
• Language: English
• Published: 16.05.1989
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

In a voltage regulator for charger/generator comprising a switching element, connected between a battery and a field winding of a generator adapted to charge the battery, for switching on and off an exciting current flowing through the field winding and a voltage detector responsive to voltage of the battery to control the operation of the switching element, there are provided an oscillator for generating an oscillation signal of a desired duty ratio, an initial excitation signal generator circuit having a plurality of stages of frequency dividers for dividing the frequency of the oscillation signal generated from the oscillator and combining together frequency division signals of the frequency dividers to produce a synthesized output signal of a desired duty ratio, a booster for boosting and rectifying an AC signal containing the oscillation signal of the oscillator and a signal which is opposite in phase to the oscillation signal to produce a boosted output signal, and excitation control means being operative, when the generator is in non-generation condition, to apply the oscillation signal of the oscillator to the booster in synchronism with the output signal of the initial excitation signal generator circuit so as to cause the booster output signal corresponding to the output signal of the initial excitation signal generator circuit to on/off control the switching element to thereby effect initial excitation of the generator and being operative, when the generator is in a predetermined generation condition, to respond to an output signal of the voltage detector so as to control the application of the oscillation signal to the booster to thereby on/off control the switching element in dependence on the battery voltage.