Resumes
Resumes
Robert Dwulet Phones & Addresses
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1216 Rivermead Ln, Wake Forest, NC 27587
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Jacksonville, FL
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2416 Finley Ridge Ln, Raleigh, NC 27615
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12100 Bedford Woods Dr, Raleigh, NC 27614
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Greenville, NC
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Bradenton, FL
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Lakewood, NJ
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Wade, NC
Publications
Us Patents
Real-Time Digital Voltage Sag Compensator
View pageUS Patent:
20030141764, Jul 31, 2003
Filed:
Jan 28, 2002
Appl. No.:
10/058863
Inventors:
Scott Brown - Wake Forest NC, US
Mark Kocher - Raleigh NC, US
Roy Colby - Raleigh NC, US
Robert Dwulet - Raleigh NC, US
Timothy Phillips - Raleigh NC, US
Mark Kocher - Raleigh NC, US
Roy Colby - Raleigh NC, US
Robert Dwulet - Raleigh NC, US
Timothy Phillips - Raleigh NC, US
Assignee:
Square D Company
International Classification:
H02J001/00
H02J003/12
H02J003/12
US Classification:
307/103000, 307/125000
Abstract:
An economical digital voltage sag compensator for overcoming sags in distributed electrical power. The voltage sag compensator employs an inexpensive micro-controller, a full wave bridge rectifier, a DC power supply, a voltage divider and an output switch. The micro-controller continuously monitors and evaluates, with respect to a setpoint measured in volt-seconds, the rectified DC voltage. At regularly spaced trigger events, as determined by the micro-controller, the micro-controller concurrently monitors the rectified DC voltage, evaluates the monitored voltage with respect to the setpoint, produces an output signal and sends that output signal to the output switch. The output switch supplies an electrical device, connected electrically in series with the full wave bridge rectifier and the output switch, with a constant average current of sufficient level to maintain the electrical device in a desired operating condition. The constant average current is obtained by applying constant volt-seconds to the electrical device. The circuit also provides overvoltage protection to the electrical device.