Overload-protected and reference-voltage-loss-protected electronic voltage regulator for vehicular-type alternators that
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02H-007/06
출원번호
US-0580763
(1995-12-29)
발명자
/ 주소
Bartol Luis E. (c/o Industrias Condor
S.A. de C.V. Blvd M. Cervantes Saavedra no. 17 Col Granada 11520 MXX) Holguin German (c/o Industrias Condor
S.A. de C.V. Blvd M. Cervantes Saavedra no. 17 Co
인용정보
피인용 횟수 :
12인용 특허 :
0
초록▼
An error amplifier feedback capacitor located between the signal output and the signal input of an error amplifier stage of a voltage regulator is removed, particularly preventing that charge stored on this capacitor should act through an overload protection circuit of a voltage regulator so protect
An error amplifier feedback capacitor located between the signal output and the signal input of an error amplifier stage of a voltage regulator is removed, particularly preventing that charge stored on this capacitor should act through an overload protection circuit of a voltage regulator so protected so as to undesirably turn off the output driver (as if there was an overload) in an oscillatory manner, undesirably causing a “pulsing”or “hunting”upon the occasion(s) of high alternator field drive currents. Meanwhile, a new capacitor that is located across a leg of the input voltage divider stage of the voltage regulator and that is called a voltage divider capacitor, is substituted. The combined effect of the (i) removal and (ii) substitution substantially eliminates “ghosts”, or such low frequency noise as is commonly called “commutator noise”, in any voltage regulator, including those that are optionally protected against failure due to overload. Still furthermore, and separately and severally, a small resistance is introduced into a direct current discharge path present in certain voltage regulators protected against short circuits. This added resistance, in combination with the regulation feedback capacitor, introduces a small time delay to the initiation of shutdown in the event of a detected short circuit condition, thus helping prevent that normal noise, especially at high alternator field drive currents, should undesirably trigger short circuit shutdown of the voltage regulator.
대표청구항▼
An electronic voltage regulator, connected across the voltage terminals of a battery, producing a pulse-width-modulated signal across the field winding of an alternator that is also connected across the voltage terminals of a battery, the voltage regulator comprising: a diode-isolated voltage divide
An electronic voltage regulator, connected across the voltage terminals of a battery, producing a pulse-width-modulated signal across the field winding of an alternator that is also connected across the voltage terminals of a battery, the voltage regulator comprising: a diode-isolated voltage divider means, connected across the terminals of the battery, for producing a diode-isolated error voltage that varies in response to variations in a voltage across the terminals of the battery, the diode-isolated voltage divider means being distinguished for including a filter means for filtering electrical noise occurring between the voltage terminals of the battery; an error amplifier means, connected across the terminals of the battery, for producing an output control signal in response to the diode-isolated error voltage received as an input signal from the voltage divider means, the error amplifier means being distinguished for being without any a.c feedback path directly from the produced output control signal to the input error voltage signal; and a driver means, connected across the terminals of the battery, for producing the pulse-width-modulated signal in response to the control signal received from the error amplifier means via a direct current path; wherein a normal function of the absent feedback path between the output control signal and the input error voltage signal of the amplifier means to stabilize the error amplifier means, and thus the pulse-width-modulated signal output of the voltage regulator, is instead performed by the filter means of the diode-isolated voltage divider means.
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이 특허를 인용한 특허 (12)
Minks Floyd M., Alternator rectification, regulation, and control circuit.
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