US6696820B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current generator field regulation control
Assignee: Borgwarner US Technologies LLC
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Filing: 2001-10-30
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Granted: 2004-02-24
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Expires: 2021-10-30
Abstract
Abstract A circuit configuration for controlling the field current of an alternating current generator in a vehicle electrical generator system includes a digital to analog converter for converting a digital command signal to an analog voltage. A first comparator compares the system field current with the converted analog voltage. A switched component, operatively connected to a power switch, is switchable in response to the comparator output. A frequency generator, operatively connected to the switched component, provides timed pulses to periodically tell the switched component to turn on the power switch.
Inventors
- 👤 David Allan Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:40
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/26; H02P9/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
166 words
A circuit configuration for controlling the field current of an alternating current generator adapted for use in a vehicle electrical generator system, the circuit configuration comprising: a digital to analog converter to convert a digital command signal to an analog voltage; a first comparator for comparing the system field current with the converted analog voltage; a switched component operatively connected to a power switch and switchable in response to the comparator output; a frequency generator operatively connected to the switched component and providing timed pulses to periodically tell the switched component to turn on the power switch; a second comparator for comparing a sensed voltage, where voltage regulation is required, with a reference voltage; an up/down counter for converting the over/under signal from the comparator to said digital command signal; a frequency generator to increment the up/down counter; and a supervisory control circuit operatively connecting said up/down counter, said generator field and phase signals, and an ignition input to power up and power down said generator.
Claim 2
Dependent Claim
166 words
A circuit configuration for controlling the field current of an alternating current generator adapted for use in a vehicle electrical generator system, the circuit configuration comprising: a digital to analog converter to convert a digital command signal to an analog voltage; a first comparator for comparing the system field current with the converted analog voltage; a switched component operatively connected to a power switch and switchable in response to the comparator output; a frequency generator operatively connected to the switched component and providing timed pulses to periodically tell the switched component to turn on the power switch; a second comparator for comparing a sensed voltage, where voltage regulation is required, with a reference voltage; an up/down counter for converting the over/under signal from the comparator to said digital command signal; a frequency generator to increment the up/down counter; and a supervisory control circuit operatively connecting said up/down counter, said generator field and phase signals, and an ignition input to power up and power down said generator.
Claim 3
Dependent Claim
15 words
The circuit configuration of claim 1 wherein said switched component is a RS flip flop.
Claim 4
Independent Claim
123 words
A method for controlling the field current of an alternating current generator adapted for use in a vehicle electrical generator system, the method comprising: converting a digital command signal to an analog voltage; comparing the system field current with the converted analog voltage; switching off a power switch in response to the comparator output; generating timed pulses to periodically tell the switched component to turn on the power switch; comparing a sensed voltage, where voltage regulation is required, with a reference voltage; converting an over/under signal from the comparator to the digital command signal; incrementing the digital command signal; and operatively connecting an up/down counter, a generator field and phase signals, and an ignition input to power up and power down said generator.
Claim 5
Independent Claim
123 words
A method for controlling the field current of an alternating current generator adapted for use in a vehicle electrical generator system, the method comprising: converting a digital command signal to an analog voltage; comparing the system field current with the converted analog voltage; switching off a power switch in response to the comparator output; generating timed pulses to periodically tell the switched component to turn on the power switch; comparing a sensed voltage, where voltage regulation is required, with a reference voltage; converting an over/under signal from the comparator to the digital command signal; incrementing the digital command signal; and operatively connecting an up/down counter, a generator field and phase signals, and an ignition input to power up and power down said generator.
References Cited (Backward Citations)
US5982154A
Cited
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