GB2318000A - Uninterruptible power supply - Google Patents

Uninterruptible power supply Download PDF

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Publication number
GB2318000A
GB2318000A GB9619204A GB9619204A GB2318000A GB 2318000 A GB2318000 A GB 2318000A GB 9619204 A GB9619204 A GB 9619204A GB 9619204 A GB9619204 A GB 9619204A GB 2318000 A GB2318000 A GB 2318000A
Authority
GB
United Kingdom
Prior art keywords
power
power generator
generator system
battery
engine
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.)
Withdrawn
Application number
GB9619204A
Other versions
GB9619204D0 (en
Inventor
Graham Chapman
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9619204A priority Critical patent/GB2318000A/en
Publication of GB9619204D0 publication Critical patent/GB9619204D0/en
Publication of GB2318000A publication Critical patent/GB2318000A/en
Withdrawn legal-status Critical Current

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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
    • 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
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/42—The network being an on-board power network, i.e. within a vehicle for ships or vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

A power generation system 1, particularly for marine applications, has an IC engine 3 driving a high frequency alternator 2 supplying regulated DC to an internal battery 4 and/or an external battery 6 (eg. a boat's 24V DC battery), a high efficiency inverter 7 which converts DC from alternator 2 and/or battery 4 and/or 6 into AC at mains voltage and frequency, and a control 8 which regulates and stabilises the inverter output to provide uninterrupted power suitable for running sensitive loads, such as computers and hi-fi. The system may receive supplementary power input from one or more external sources such as water, wind or solar generated power 9 or a boats engine and alternator 9A. The system 1 senses when charge is reaching batteries 4, 6 from an external source and adjusts its own charging accordingly. If an input from a mains supply is available, the inverter 7 feeds mains power to the load and acts as a charger for battery charging from the mains input. The system 1 may automatically start itself up to keep warm in cold conditions and may run engine 3 at a speed to match the load. The engine 3 may be sized to provide the average power needed for the inverter 7 and for charging batteries 4, 6. The system 1 may be housed in a soundproof and/or waterproof enclosure.

Description

GENERATOR SYSTEM Field of the Invention This invention relates to the field of power generator systems, in particular but not exclusively for marine applications.
Background to the Invention In many situations where a supply of electric power is required, mains AC power is not available, for example in particularly isolated properties, caravans and mobile homes or a marine environment such as on-board boats.
A stand-alone power generation system is thus required to run appliances, machinery and other equipment in such situations.
Given the wide variety of possible applications in the (very different) environments mentioned above, such a generator system is likely to have to supply many different types of load. Different loads will have different requirements, for example, high current for certain machinery, high sensitivity for computers, hi-fi equipment etc. Depending on the type of generator system used, some loads may run less effectively than others.
The nature of known stand-alone power generator systems is such that the power output may well be variable and not as reliable as conventional mains power. Weather conditions, the type of load and other demands on the system will affect the reliability and stability of its output and this is obviously undesirable when trying to run sensitive loads such as computer systems where even the shortest break in supply, surge or loss of power could cause serious damage or, at least, data corruption or loss.
There is thus a need for a power generator system which can provide a constant supply of power without breaks for many types of operating environment, particularly marine applications.
Summarv of the Invention According to the present invention, in its broadest aspect, there is provided a power generator system for the generation of electrical power for, in particular but not exclusively, marine applications comprising: a power source; charge storage means; a high efficiency invertor for converting DC power from said power source and/or charge storage means into AC; and control means for monitoring and controlling the system parameters, wherein the output of said invertor is regulated and stabilised by said control means so as to provide uninterrupted output power suitable for running sensitive loads.
Preferably, said charge storage means is a battery internal to the power generator system. Alternatively or in addition, said charge storage means comprises an external battery, for example a boat's 24V DC battery.
In a preferred form, said power source is an internal combustion engine driving a high frequency alternator, the output of which is regulated DC which is supplied to said charge storage means.
Alternatively, or in addition, said power source comprises a wind, water, or solar power generator.
Advantageously, said power generator system is housed within a single enclosure which is, preferably, soundproof and/or waterproof.
It will be appreciated that the invention includes within its scope a power generator system substantially as described herein with reference to and as illustrated by the accompanying drawings.
Brief Description of the Drawings In the accompanying drawings: Figure 1 is a schematic representation of a power generator system embodying the present invention; and Figure 2 is a front view of the system control panel.
Description of the Preferred Embodiments The power generator system of the present invention is an extremely reliable and efficient power generator for mixed and variable loads; for example, isolated property and the marine environment. The system is particularly suitable as a power supply for a boat.
Referring to Figure 1, the power generator system 1 comprises a high frequency alternator 2 which is driven by a high efficiency internal combustion engine 3 (which may be a diesel or gas/petrol-driven engine).
Alternator 2 supplies regulated DC to an internal battery 4 which is housed within the power generator system enclosure 5. In some applications, for example a marine environment, an external battery 6 (for example a boat's 24V DC battery bank) can receive DC power from alternator 2 instead of or in addition to internal battery 4.
A high efficiency invertor 7 converts DC power from batteries 4 and/or 6 to output AC power as a low distortion sinewave of similar frequency to a domestic mains supply. Inventor 7 has a continuous power rating of 3kVA with a peak power rating of 6kVA. All loads, within the power generator system's rating, that are designed to run on mains will run and perform identically on the power generator system of the present invention.
Power generator system 1 is managed by control means 8 which is in this example a 16-bit microprocessor. The microprocessor 8 controls the whole power generator system 1, including the internal combustion engine 3, the alternator 2 and the invertor 7. Control means 8 also manages the interface to the shorepower and other external charging systems 9 to increase the efficiency of the system.
The microprocessor controlled monitoring facility measures the voltages and currents, the internal and external temperature etc so that necessary adjustments and/or warnings can be made. Battery life is prolonged by controlling the charge rates and preventing deep discharge of the battery using control means 8.
Supplementary power may be provided to the system by one or more external power sources 9 for example water, wind or solar generated power, or a boat's engine 9A.
The power generator system 1 will sense when charge is reaching batteries 4, 6 from external source(s) 9 and adjust its own charge accordingly.
Invertor 7 provides power to mixed and variable loads but the internal combustion engine 3 is sized to provide the average power needed for the invertor and for charging batteries 4,6. With this action of averaging the varying load, the power generator system 1 uses a generator that is smaller and because it is providing power at a constant rate is much more efficient this dramatically reduces fuel consumption and pollution. Further advantages of running the engine 3 in this manner are that the maintenance requirement is reduced and reliability is increased.
Turning to Figure 2, the status of the power generator system 1 is indicated on a four-line alphanumeric display 10 provided on control panel 11.
Although control means 8 is pre-programmed there are several parameters which can easily be user-optimised using the four buttons 12 on control panel 11.
The power generator system 1 will indicate, via control panel 11, when it needs servicing. The system will automatically start itself up to keep warm in extremely cold conditions and will run engine 3 at a speed to match the load.
The system 1 can be programmed not to run at all during certain periods and if the battery voltage is too low or the ambient temperature is extremely low, the system 1 will run up automatically to preserve its integrity.
The primary power source of the system of the present invention is the internal combustion engine 3 and/or the batteries 4,6. However, if the power generator system 1 is fed with a mains supply, invertor 7 will synchronise to it and become a battery charger while at the same time feeding mains power out of the system to the load(s).
The system carries out the battery power/mains change over at the zero cross over of the AC power thereby guaranteeing a constant power supply.
Where there is a need for a fully integrated system, power generator system 1 is designed to work with another DC alternator running off a another engine, for example a boat engine 9A, and charging the auxiliary batteries. This utilises the charging that is available when the engine 9A is running and reduces the need for the system engine 3 to operate which, in turn, dramatically increases the efficiency of the system as a whole.
In use, the power generator system 1 provides immediate, constant and nobreak mains power. The output is regulated and stabilised and is therefore ideal for computers, hi-fi equipment and other sensitive loads. Furthermore, engine use is considerably reduced because the mains output is sourced by batteries.

Claims (8)

1 A power generator system for the generation of electrical power comprising a power source; a charge storage means; a high efficiency invertor for converting DC power from said power source and/or charge storage means into AC; and a control means for monitoring and controlling the system perimeters, wherein the output of said invertor is regulated and stabilised by said control means so as to provide uninterrupted power suitable for running sensitive loads.
2 A power generator system according to Claim 1 wherein said system is adapted for use in marine applications.
3 A power generating system according to Claims 1 or 2 wherein said charge storage means is a battery internal to the power generator system.
4 A power generator system according to Claims 1 or 2 wherein said storage means comprises an external battery.
5 A power generator system according to any preceding Claim wherein said power source in an internal combustion engine driving a high frequency alternator, the output of which is regulated DC which is supplied to said storage means.
6 A power generator system according to Claims 1-4 wherein said power source comprises a wind, water, or solar power generator.
7 A power generator system according to any preceding Claim wherein said power generator system is housed within a single enclosure wherein said enclosure is sound proof and/or water-proof.
8 A power generator system arranged and adapted to operate substantially as herein described with reference to the accompanying drawings.
GB9619204A 1996-09-13 1996-09-13 Uninterruptible power supply Withdrawn GB2318000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9619204A GB2318000A (en) 1996-09-13 1996-09-13 Uninterruptible power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9619204A GB2318000A (en) 1996-09-13 1996-09-13 Uninterruptible power supply

Publications (2)

Publication Number Publication Date
GB9619204D0 GB9619204D0 (en) 1996-10-23
GB2318000A true GB2318000A (en) 1998-04-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB9619204A Withdrawn GB2318000A (en) 1996-09-13 1996-09-13 Uninterruptible power supply

Country Status (1)

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GB (1) GB2318000A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001056133A1 (en) * 2000-01-28 2001-08-02 Newage International Limited Ac power generating system
EP0950575A3 (en) * 1998-04-17 2002-10-23 WEBASTO KAROSSERIESYSTEME GmbH Arrangement for supplying current to an on-board vehicle network
ES2229887A1 (en) * 2003-03-28 2005-04-16 Universidad Pontificia Comillas Uninterrupted power supply system, has photovoltaic supply provided with random generator, and collector area segment provided with power input unit
WO2005101610A2 (en) * 2004-04-16 2005-10-27 Energy Solutions (Ni) Limited An electrical power supply system
WO2006106418A2 (en) * 2005-04-08 2006-10-12 Meta System Spa Uninterruptible power supply with additional feeding
ITBO20080766A1 (en) * 2008-12-22 2010-06-23 Energifera S R L COGENERATION SYSTEM
GB2466511A (en) * 2008-12-29 2010-06-30 Mark Christopher Higginson Power supply having multiple power sources
EP2482425A1 (en) * 2011-02-01 2012-08-01 Siemens Aktiengesellschaft Blackout ride-through system
DE102011103449A1 (en) * 2011-06-07 2012-12-13 E3/Dc Gmbh Device for supplying a house with electrical energy
GB2506697A (en) * 2012-10-03 2014-04-09 Changs Ascending Entpr Co Ltd Energy storage and power supply system
CN103935498A (en) * 2013-01-23 2014-07-23 集美大学 Energy dynamic management and control system of solar sightseeing boat
US9381990B2 (en) 2011-02-01 2016-07-05 Siemens Aktiengesellschaft Power supply system for an electrical drive of a marine vessel
CN106160191A (en) * 2016-07-08 2016-11-23 广船国际有限公司 The dead electricity recovery system of diesel engine non-machine band pump and method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189097A (en) * 1986-04-07 1987-10-14 Powamate Ltd Solar power systems
WO1988007782A1 (en) * 1987-03-24 1988-10-06 Wolf John V D Electric generator
GB2224403A (en) * 1985-12-24 1990-05-02 Eikoh Giken Co Ltd No-break power supply
US4992920A (en) * 1989-09-13 1991-02-12 Davis Donald E Regulated AC power system energized by variable speed prime mover
GB2259198A (en) * 1991-08-29 1993-03-03 D S Electronics Limited An uninterruptable power supply
WO1993023663A1 (en) * 1992-05-14 1993-11-25 Mishport Pty. Ltd. Engine powered energy providing assemblies
WO1995020836A1 (en) * 1994-01-26 1995-08-03 Onan Corporation Generator power system and method
US5532525A (en) * 1994-06-02 1996-07-02 Albar, Inc. Congeneration power system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224403A (en) * 1985-12-24 1990-05-02 Eikoh Giken Co Ltd No-break power supply
GB2189097A (en) * 1986-04-07 1987-10-14 Powamate Ltd Solar power systems
WO1988007782A1 (en) * 1987-03-24 1988-10-06 Wolf John V D Electric generator
US4992920A (en) * 1989-09-13 1991-02-12 Davis Donald E Regulated AC power system energized by variable speed prime mover
GB2259198A (en) * 1991-08-29 1993-03-03 D S Electronics Limited An uninterruptable power supply
WO1993023663A1 (en) * 1992-05-14 1993-11-25 Mishport Pty. Ltd. Engine powered energy providing assemblies
WO1995020836A1 (en) * 1994-01-26 1995-08-03 Onan Corporation Generator power system and method
US5532525A (en) * 1994-06-02 1996-07-02 Albar, Inc. Congeneration power system

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0950575A3 (en) * 1998-04-17 2002-10-23 WEBASTO KAROSSERIESYSTEME GmbH Arrangement for supplying current to an on-board vehicle network
WO2001056133A1 (en) * 2000-01-28 2001-08-02 Newage International Limited Ac power generating system
US6801019B2 (en) 2000-01-28 2004-10-05 Newage International Limited AC power generating system
EP2068423A1 (en) 2000-01-28 2009-06-10 Cummins Generator Technologies Limited An AC power generation system
EP2083498A1 (en) 2000-01-28 2009-07-29 Cummins Generator Technologies Limited An AC power generating system
ES2229887A1 (en) * 2003-03-28 2005-04-16 Universidad Pontificia Comillas Uninterrupted power supply system, has photovoltaic supply provided with random generator, and collector area segment provided with power input unit
WO2005101610A2 (en) * 2004-04-16 2005-10-27 Energy Solutions (Ni) Limited An electrical power supply system
WO2005101610A3 (en) * 2004-04-16 2006-03-30 Energy Solutions Ni Ltd An electrical power supply system
WO2006106418A2 (en) * 2005-04-08 2006-10-12 Meta System Spa Uninterruptible power supply with additional feeding
WO2006106418A3 (en) * 2005-04-08 2007-10-04 Meta System Spa Uninterruptible power supply with additional feeding
ITBO20080766A1 (en) * 2008-12-22 2010-06-23 Energifera S R L COGENERATION SYSTEM
WO2010073102A3 (en) * 2008-12-22 2010-09-16 Energifera S.R.L. Cogeneration system
GB2466511A (en) * 2008-12-29 2010-06-30 Mark Christopher Higginson Power supply having multiple power sources
EP2482425A1 (en) * 2011-02-01 2012-08-01 Siemens Aktiengesellschaft Blackout ride-through system
WO2012104151A3 (en) * 2011-02-01 2013-05-23 Siemens Aktiengesellschaft Blackout ride-through system
US9381990B2 (en) 2011-02-01 2016-07-05 Siemens Aktiengesellschaft Power supply system for an electrical drive of a marine vessel
DE102011103449A1 (en) * 2011-06-07 2012-12-13 E3/Dc Gmbh Device for supplying a house with electrical energy
EP2533392B1 (en) 2011-06-07 2018-09-26 E3/DC GmbH Dispositif d'alimentation d'une habitation en énergie électrique
GB2506697A (en) * 2012-10-03 2014-04-09 Changs Ascending Entpr Co Ltd Energy storage and power supply system
GB2506697B (en) * 2012-10-03 2017-02-22 Changs Ascending Entpr Co Ltd Energy storage system
CN103935498A (en) * 2013-01-23 2014-07-23 集美大学 Energy dynamic management and control system of solar sightseeing boat
CN106160191A (en) * 2016-07-08 2016-11-23 广船国际有限公司 The dead electricity recovery system of diesel engine non-machine band pump and method
CN106160191B (en) * 2016-07-08 2018-12-11 广船国际有限公司 The power loss recovery system and method for the non-machine band pump of diesel engine

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