Electricity: power supply or regulation systems – Output level responsive – Phase controlled switching using electronic tube or a three...
Patent
1992-06-26
1994-07-12
Sterrett, Jeffrey L.
Electricity: power supply or regulation systems
Output level responsive
Phase controlled switching using electronic tube or a three...
323237, 323300, 323320, G05F 1455
Patent
active
053292235
ABSTRACT:
An apparatus and method for controlling the voltage applied to a load is taught. The method includes receiving an AC line voltage, generating an operating AC voltage from the AC line voltage and applying this operating AC voltage across the load. A measured signal which is a function of the magnitude of the operating AC voltage is generated, and then averaged to generate an average signal representative of the average value of the measured signal. The operating AC voltage is continually readjusted in response to changes in the average signal. The apparatus implementing this method includes terminal means for receiving an AC line voltage, means for generating an operating AC voltage from the AC line voltage, connector means for applying the operating AC voltage across the load, and voltage detection means for generating a measured signal which is a function of the magnitude of said operating AC voltage. Signal averaging means are provided for generating an average signal representative of the average value of the measured signal. Finally, the apparatus includes AC voltage modulation means for adjusting the operating AC voltage in response to the average signal. In the preferred embodiment of the apparatus of the present invention, the AC voltage modulation means comprises voltage reduction means for switching off the line voltage for a portion of each cycle, the length of the portion being determined by the average value of the measured signal. The voltage modulation means may comprise a phase control integrated circuit device for controlling a triac. The phase control integrated circuit device is responsive to the average signal to generate a control signal operative to control a triac to switch off transmission of the line voltage to the load for the portion of each cycle.
REFERENCES:
patent: 3441823 (1969-04-01), Schlabach
patent: 3506852 (1970-04-01), DeHart
patent: 3633094 (1972-01-01), Clements
patent: 3821634 (1974-06-01), Sabolic
patent: 3859591 (1975-01-01), Saunders
patent: 3961236 (1976-06-01), Rodek et al.
patent: 3997825 (1976-12-01), Miyasita et al.
patent: 4011489 (1977-03-01), Franz et al.
patent: 4052648 (1977-10-01), Nola
patent: 4078393 (1978-03-01), Wills
patent: 4158164 (1979-06-01), Nutz
patent: 4176307 (1979-11-01), Parker
patent: 4185575 (1980-01-01), Brown et al.
patent: 4190793 (1980-02-01), Parker et al.
patent: 4194145 (1980-03-01), Ritter
patent: 4237531 (1980-12-01), Cutler et al.
patent: 4242625 (1980-12-01), Hedges
patent: 4255695 (1981-03-01), Plunkett et al.
patent: 4266177 (1981-05-01), Nola
patent: 4271386 (1981-06-01), Lee
patent: 4287464 (1981-09-01), Lee et al.
patent: 4298831 (1981-11-01), Espelage et al.
patent: 4302717 (1981-11-01), Olla
patent: 4323835 (1982-04-01), Lee
patent: 4333046 (1982-06-01), Lee
patent: 4379258 (1983-04-01), Sugimoto
patent: 4380730 (1983-04-01), Morton, Jr.
patent: 4404511 (1983-09-01), Nola
patent: 4417190 (1983-11-01), Nola
patent: 4426614 (1984-01-01), Nola
patent: 4433276 (1984-02-01), Nola
patent: 4439718 (1984-03-01), Nola
patent: 4459528 (1984-07-01), Nola
patent: 4469998 (1984-09-01), Nola
patent: 4567425 (1986-01-01), Bloomer
patent: 4689548 (1987-08-01), Mechlenburg
patent: 4766363 (1988-08-01), Rutter et al.
patent: 4870340 (1989-09-01), Kral
patent: 5239255 (1993-08-01), Schanin et al.
Frank J. Nola, "Save Power in AC Induction Motors," Nasa Technical Briefs, Sep., 1977, pp. 179, 180.
Frank J. Nola, "Fast-Response Power Saver for Induction Motors," NASA Tech Briefs, Jun. 1979, pp. 6, 7.
Joseph A. Cusack, "VHF Frequency Multiplier," NASA Tech Briefs, Jun. 1979, p. 7.
Frank J. Nola, "Improved Power-Factor Controller," NASA Tech Briefs, Sep. 1980, pp. 133, 134.
Frank J. Nola, "Energy Saving in ac Generators," NASA Tech Briefs, Sep. 1980, p. 134.
NASA Technology Utilization Office, Technical Support Package, "Power Factor Controller, Brief No. MFS-23280," Apr. 2, 1979, pp. Cover--20.
NASA Technology Utilization Office, Technical Support Package, "Fast-Response Power Saver for Induction Motors," NASA Tech Briefs, Jun. 1979, vol. 4, No. 1, MFS-23988, pp. Cover--9.
NASA Technology Utilization Office, Technical Support Package, "Improved Power-Factor Controller," NASA Tech Briefs, Sep. 1980, vol. 5, No. 2, MFS-25323, pp. Cover--11.
Green Technologies Inc.
Sterrett Jeffrey L.
LandOfFree
Ideal voltage controller for conserving energy in inductive load does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ideal voltage controller for conserving energy in inductive load, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ideal voltage controller for conserving energy in inductive load will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-399282