WO1997043892A3 - System and method for estimating a load to optimize a backup energy system response - Google Patents

System and method for estimating a load to optimize a backup energy system response Download PDF

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Publication number
WO1997043892A3
WO1997043892A3 PCT/US1997/007666 US9707666W WO9743892A3 WO 1997043892 A3 WO1997043892 A3 WO 1997043892A3 US 9707666 W US9707666 W US 9707666W WO 9743892 A3 WO9743892 A3 WO 9743892A3
Authority
WO
WIPO (PCT)
Prior art keywords
load
link
backup energy
estimating
optimize
Prior art date
Application number
PCT/US1997/007666
Other languages
French (fr)
Other versions
WO1997043892A2 (en
Inventor
Jeffrey C Emmerich
Original Assignee
Superconductivity Inc
Jeffrey C Emmerich
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 Superconductivity Inc, Jeffrey C Emmerich filed Critical Superconductivity Inc
Publication of WO1997043892A2 publication Critical patent/WO1997043892A2/en
Publication of WO1997043892A3 publication Critical patent/WO1997043892A3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade

Abstract

A method of delivering an optimized power level from a backup energy system (20) to a load (10) connected to a primary energy supply via a DC link (16) and an inverter is provided (18). The method has the steps of: sensing a voltage of the DC link (16) connected to the load (10); connecting a converter (22) between the backup energy supply (20) and the DC link (16); evaluating a rate of change of the voltage of the DC link (16); determining an estimate of the average load current using the rate of change of the DC link voltage; and controlling the converter (22) using the average load current to switch the optimized power output from the backup energy supply (20) to the load (10).
PCT/US1997/007666 1996-05-06 1997-05-05 System and method for estimating a load to optimize a backup energy system response WO1997043892A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1694396P 1996-05-06 1996-05-06
US60/016,943 1996-05-06

Publications (2)

Publication Number Publication Date
WO1997043892A2 WO1997043892A2 (en) 1997-11-27
WO1997043892A3 true WO1997043892A3 (en) 1998-02-26

Family

ID=21779855

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/007666 WO1997043892A2 (en) 1996-05-06 1997-05-05 System and method for estimating a load to optimize a backup energy system response

Country Status (2)

Country Link
US (1) US5889659A (en)
WO (1) WO1997043892A2 (en)

Families Citing this family (23)

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Publication number Priority date Publication date Assignee Title
US6175166B1 (en) * 1999-06-14 2001-01-16 Abb Power T&D Company Inc. System for mitigating voltage disturbances and interruptions for power distribution applications
US7164590B2 (en) * 2002-07-29 2007-01-16 International Rectifier Corporation Power transfer system with reduced component ratings
US7456513B2 (en) * 2002-11-15 2008-11-25 Sprint Communications Company L.P. Modular cell site with air-turbine backup
US20040125618A1 (en) * 2002-12-26 2004-07-01 Michael De Rooij Multiple energy-source power converter system
US7127895B2 (en) * 2003-02-05 2006-10-31 Active Power, Inc. Systems and methods for providing backup energy to a load
US20040178681A1 (en) * 2003-03-11 2004-09-16 Electronic Data Systems Corporation System for providing backup power to an electronic device
US20060059937A1 (en) * 2004-09-17 2006-03-23 Perkins David E Systems and methods for providing cooling in compressed air storage power supply systems
US7314059B2 (en) * 2004-09-17 2008-01-01 Active Power, Inc. Systems and methods for controlling pressure of fluids
US8333330B2 (en) * 2004-09-17 2012-12-18 Active Power, Inc. Systems and methods for controlling temperature and pressure of fluids
US20060059936A1 (en) * 2004-09-17 2006-03-23 Radke Robert E Systems and methods for providing cooling in compressed air storage power supply systems
AT501542B1 (en) 2004-12-16 2009-03-15 Fronius Int Gmbh METHOD FOR DETECTING THE LOAD OF AN ISLE CHANGE AND ISOLATOR INVERTER
US7918091B1 (en) 2006-09-20 2011-04-05 Active Power, Inc. Systems and methods for controlling humidity
US7710081B2 (en) * 2006-10-27 2010-05-04 Direct Drive Systems, Inc. Electromechanical energy conversion systems
US7425807B1 (en) 2006-11-29 2008-09-16 Active Power, Inc. Transient energy systems and methods for use of the same
US7400052B1 (en) 2006-11-29 2008-07-15 Active Power, Inc. Transient energy systems and methods for use of the same
US7642664B1 (en) 2006-11-29 2010-01-05 Active Power, Inc. Transient energy systems and methods for use of the same
US7750518B1 (en) 2006-11-29 2010-07-06 Active Power, Inc. Transient energy systems and methods for use of the same
US20100019598A1 (en) * 2008-07-28 2010-01-28 Direct Drive Systems, Inc. Rotor for an electric machine
US8228191B2 (en) * 2009-03-30 2012-07-24 Magnasphere Corp. Anti-tamper assembly for surface mounted security switch
ES2710555T3 (en) * 2010-10-06 2019-04-25 General Electric Technology Gmbh Procedure and device to protect an ESP power supply for transient overvoltages in the electrical network
US10734821B2 (en) 2018-03-08 2020-08-04 Saudi Arabian Oil Company Power control system
CN109450082A (en) * 2018-11-20 2019-03-08 四川省辛普森动力设备有限公司 A kind of dynamic UPS and control method
CN112798845A (en) * 2020-12-29 2021-05-14 联合汽车电子有限公司 Automated sampling method and system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5315533A (en) * 1991-05-17 1994-05-24 Best Power Technology, Inc. Back-up uninterruptible power system
US5602462A (en) * 1995-02-21 1997-02-11 Best Power Technology, Incorporated Uninterruptible power system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62107647A (en) * 1985-10-31 1987-05-19 三菱電機株式会社 Flywheel source apparatus
US4719550A (en) * 1986-09-11 1988-01-12 Liebert Corporation Uninterruptible power supply with energy conversion and enhancement
US4709318A (en) * 1986-10-22 1987-11-24 Liebert Corporation UPS apparatus with control protocols
EP0455960B1 (en) * 1990-05-08 1994-11-09 Asea Brown Boveri Ag Reversible converter and its application as control element of an energy storage device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5315533A (en) * 1991-05-17 1994-05-24 Best Power Technology, Inc. Back-up uninterruptible power system
US5602462A (en) * 1995-02-21 1997-02-11 Best Power Technology, Incorporated Uninterruptible power system

Also Published As

Publication number Publication date
US5889659A (en) 1999-03-30
WO1997043892A2 (en) 1997-11-27

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