Control apparatus for charging generator
Patent
·
OSTI ID:6733821
A control apparatus is described for controlling a charging generator for an automobile, comprising: armature windings across which an alternating current output voltage is generated in response to rotation of the armature; rectifier circuit means connected to the armature windings for rectifying the alternating current output voltage; battery means for supplying electric energy and being charged by the rectified output of the armature windings through the rectifier circuit means; a field winding for providing a magnetic field for the armature windings; semiconductor switching means connected in series to the field winding for intermittently interrupting an exciting current supplied to the field winding; voltage regulation means for sensing the rectified output voltage of the armature windings charging the battery means and for controlling the exciting current supplied to the field winding through the semiconductor switching means; means for detecting the amplitude of the exciting current supplied from the battery means to the field winding at least until the generator enables a charging operation; and means for comparing the detected amplitude of the exciting current with a predetermined level and for controlling an on-off operation of the semiconductor means so as to suppress the initial exciting current to a level no more than the predetermined level which predetermined level is sufficient to enable the charging operation by the generator.
- Assignee:
- Hitachi, Ltd., Tokyo
- Patent Number(s):
- US 4642548
- OSTI ID:
- 6733821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330300* -- Advanced Propulsion Systems-- Electric-Powered Systems
ALTERNATING CURRENT
AMPLITUDES
ARMATURES
AUTOMOBILES
CONTROL SYSTEMS
CURRENTS
ELECTRIC BATTERIES
ELECTRIC CHARGES
ELECTRIC CURRENTS
ELECTRIC GENERATORS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
ELECTRONIC CIRCUITS
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
MAGNETIC FIELDS
MOTION
RECTIFIERS
ROTATION
SEMICONDUCTOR DEVICES
VEHICLES
VOLTAGE REGULATORS
330300* -- Advanced Propulsion Systems-- Electric-Powered Systems
ALTERNATING CURRENT
AMPLITUDES
ARMATURES
AUTOMOBILES
CONTROL SYSTEMS
CURRENTS
ELECTRIC BATTERIES
ELECTRIC CHARGES
ELECTRIC CURRENTS
ELECTRIC GENERATORS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
ELECTRONIC CIRCUITS
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
MAGNETIC FIELDS
MOTION
RECTIFIERS
ROTATION
SEMICONDUCTOR DEVICES
VEHICLES
VOLTAGE REGULATORS