CA2260941A1 - Energy saving power control system - Google Patents

Energy saving power control system

Info

Publication number
CA2260941A1
CA2260941A1 CA002260941A CA2260941A CA2260941A1 CA 2260941 A1 CA2260941 A1 CA 2260941A1 CA 002260941 A CA002260941 A CA 002260941A CA 2260941 A CA2260941 A CA 2260941A CA 2260941 A1 CA2260941 A1 CA 2260941A1
Authority
CA
Canada
Prior art keywords
power
loads
load
wide range
main switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002260941A
Other languages
French (fr)
Other versions
CA2260941C (en
Inventor
N. Edward Walker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GLOBAL LIGHTING SOLUTIONS LLC
Original Assignee
Lti International, Inc.
N. Edward Walker
Ultrawatt Integrated Systems, Inc.
Ultrawatt.Com Corporation
Ultrawatt Energy Systems, Inc
Global Lighting Solutions, Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lti International, Inc., N. Edward Walker, Ultrawatt Integrated Systems, Inc., Ultrawatt.Com Corporation, Ultrawatt Energy Systems, Inc, Global Lighting Solutions, Llc filed Critical Lti International, Inc.
Publication of CA2260941A1 publication Critical patent/CA2260941A1/en
Application granted granted Critical
Publication of CA2260941C publication Critical patent/CA2260941C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/2573—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power

Abstract

Apparatus and methods for AC power regulation for a wide range of complex capacitive and inductive loads which provide substantial reduction in power consumption while also providing a leading power factor. The system is self-adjusting for a wide range of loads and can reduce power consumption by 25 percent in lighting loads while producing minimal reduction in light output.
The system utilizes a main switch (17) consisting of back-to-back MOS
controlled Thyristor devices (MCTs) and a parallel capacitor bank (70) in series with the load (4). The main switch is initially turned off slightly in advance of the load current zero crossing, and this in combination with the capacitor bank (70) allows power to be reduced in a low noise fashion. The turn-off time is advanced gradually to regulate power at a target reduced level. At the target power level, load phase angle is measured and maintained to control the power savings ratio.
CA002260941A 1996-07-25 1997-07-23 Energy saving power control system Expired - Fee Related CA2260941C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/687,749 1996-07-25
US08/687,749 US5754036A (en) 1996-07-25 1996-07-25 Energy saving power control system and method
PCT/US1997/012973 WO1998004964A1 (en) 1996-07-25 1997-07-23 Energy saving power control system

Publications (2)

Publication Number Publication Date
CA2260941A1 true CA2260941A1 (en) 1998-02-05
CA2260941C CA2260941C (en) 2001-03-06

Family

ID=24761695

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002260941A Expired - Fee Related CA2260941C (en) 1996-07-25 1997-07-23 Energy saving power control system

Country Status (7)

Country Link
US (1) US5754036A (en)
EP (1) EP0919019A4 (en)
AU (1) AU3738197A (en)
CA (1) CA2260941C (en)
PL (1) PL331331A1 (en)
TW (1) TW343402B (en)
WO (1) WO1998004964A1 (en)

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Also Published As

Publication number Publication date
US5754036A (en) 1998-05-19
TW343402B (en) 1998-10-21
PL331331A1 (en) 1999-07-05
EP0919019A1 (en) 1999-06-02
EP0919019A4 (en) 2001-04-11
WO1998004964A1 (en) 1998-02-05
AU3738197A (en) 1998-02-20
CA2260941C (en) 2001-03-06

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