EP1201016A1 - Uninterrupted power conversion system - Google Patents

Uninterrupted power conversion system

Info

Publication number
EP1201016A1
EP1201016A1 EP00943988A EP00943988A EP1201016A1 EP 1201016 A1 EP1201016 A1 EP 1201016A1 EP 00943988 A EP00943988 A EP 00943988A EP 00943988 A EP00943988 A EP 00943988A EP 1201016 A1 EP1201016 A1 EP 1201016A1
Authority
EP
European Patent Office
Prior art keywords
conversion system
power supply
output terminals
electric power
voltage
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Withdrawn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
EP00943988A
Other languages
German (de)
French (fr)
Inventor
Antonio Fontan Tarodo
Antonio J. Huertas Blazquez
Jorge Gonzalez Gonzalez
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.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP1201016A1 publication Critical patent/EP1201016A1/en
Withdrawn legal-status Critical Current

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
    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources

Definitions

  • the present invention relates to an uninterrupted power conversion system, which permanently supplies electric power to electrical and/or electronic equipment, being of special, but not exclusive, application in a telecommunications system.
  • the power supply system is capable of receiving power from any source and establishing a conversion path to produce at its output a voltage and current suitable for the equipment which it is feeding.
  • the electric power distribution system receives electric power from an alternating current mains and transforms it for supplying a set of electrical means and some energy storage means.
  • the distribution system comprises rectifier means, the outputs of which are connected to electric means that receive a rectified sinusoidal voltage.
  • the conversion of this rectified voltage into a direct voltage suitable for a set of loads is performed in a set of converter means.
  • the power distribution system complies as a whole with the international standards referring to the harmonics content of the current supplied by the alternating current mains since each converter means individually compels the current that it receives to follow the waveform of the rectified voltage.
  • an uninterrupted power supply system which is of an appropriate size and has suitable electrical operating characteristics for mounting together with telecommunications equipment.
  • the uninterrupted power supply system of the invention receives electric power from an electric power supply through some input terminals, and supplies a voltage and current level to a voltage distribution busbar to which a set of loads is connected.
  • the power supply system comprises first adapter means connected in parallel with rectifier means, which in turn are connected between the input terminals and some first output terminals, so that the power demanded by said loads flows permanently through the first adapter means.
  • the first adapter means compel the current supplied by the electric power supply to follow the waveform of the voltage supplied, also by the same electric power supply.
  • the uninterrupted power supply system achieves a high overall efficiency and a power factor close to unity, is economical and compact in size.
  • FIG. 1 shows a block diagram of an uninterrupted power conversion system and its connection to an alternating current (AC) mains and to a load, according to the invention
  • FIG. 2 shows a block diagram of a second implementation of the uninterrupted power conversion system according to the invention.
  • Figure 1 shows a block diagram of a preferred implementation of the uninterrupted power conversion system of the invention, which is connected through some input terminals 1 1-1 and 1 1-2, respectively, to an electric power supply such as an alternating current (AC) mains, and through some first output terminals 12-1 and 12-2 supplies a voltage and current suitable for a predetermined number of loads 17-1 to 17-n, such as a telecommunications equipment.
  • an electric power supply such as an alternating current (AC) mains
  • first output terminals 12-1 and 12-2 supplies a voltage and current suitable for a predetermined number of loads 17-1 to 17-n, such as a telecommunications equipment.
  • the uninterrupted power conversion system comprises first adapter means 13 whose input terminals are respectively connected to the input terminals 11 -1 and 1 1-2, and its output terminals are respectively connected to the first output terminals 12-1 and 12-2, which in turn are connected to a voltage distribution busbar 14 to which the loads 17-1 to 17-n are connected.
  • Rectifier means 15 are connected in parallel with the first adapter means 13.
  • Charger means 16 though some input terminals are connected to the input terminals 1 1 -1 and 1 1 -2, and are connected through second output terminals 16-2 and 16-3 to an energy storage facility 16-1.
  • the second output terminals 16-2 and 16-3 are respectively connected by cable to the first output terminals 12-1 and 12-2.
  • a switching element 16-4 is installed on one of the cables which forms the electrical connection between the second output terminals 16-2 and 16-3 and the first output terminals 12-1 and 12-2.
  • the first adapter means 13 have the function of carrying out power factor correction so that the waveform of the input current follows the sinusoidal waveform of the voltage supplied, also, by the AC power supply through input terminals 1 1 -1 and 1 1 -2.
  • the first adapter means 13 produce across the output terminals 12-1 and 12-2 an adequate, regulated voltage for the requirements of loads 17-1 to 17-n.
  • the first adapter means 13 include a switched boost power converter, which is not described since it is well known in the state of the art.
  • the boost power converter 13 performs the process of transforming the AC power into direct current (DC).
  • the uninterrupted power conversion system also comprises a second conversion path with capacity for storing energy and supplying it to the loads 17-1 to 17-n, in the event of loss of the AC power supply.
  • the AC power supply feeds AC power to the charger means 16 that adapt it for storing in the energy storage battery 16-1 , such as a battery.
  • the charger means 16 are known in the state of the art, for which reason they are not described herein.
  • Figure 2 shows a block diagram of another preferred implementation.
  • the energy stored in the battery 16-1 before being fed to the loads 17-1 to 17-n, is stepped up by means of second adapter means 16-5, such as a switched boost power converter.
  • the battery 16-1 is connected to the loads 17-1 to
  • the AC power supplied by the AC power supply flows entirely though the rectifier means 15, such as a full-wave rectifier bridge, which rectify it, and supply a rectified voltage to the loads

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

Uninterrupted power conversion system connected to an electric power supply through input terminals (11-1 and 11-2), for providing a voltage distribution busbar (14) with a suitable level of voltage for a set of loads (17-1 to 17-n). First adapter means (13) are connected in parallel with rectifier means (15) connected across the input terminals (11-1 and 11-2) and the voltage distribution busbar (14), such that the power demanded by the loads (17-1 to 17-n) flows constantly through the first adapter means (13). Additionally, the first adapter means (13) compel the input current to follow the waveform of the voltage supplied by the electric power supply.

Description

UNINTERRUPTED POWER CONVERSION SYSTEM OBJECT OF THE INVENTION
The present invention relates to an uninterrupted power conversion system, which permanently supplies electric power to electrical and/or electronic equipment, being of special, but not exclusive, application in a telecommunications system.
The power supply system is capable of receiving power from any source and establishing a conversion path to produce at its output a voltage and current suitable for the equipment which it is feeding. STATE OF THE ART
An electric power distribution architecture for telecommunications equipment is described in the European patent application EP98403024.7, titled "Electric power distribution system", and incorporated in the present patent application by reference. The electric power distribution system receives electric power from an alternating current mains and transforms it for supplying a set of electrical means and some energy storage means.
The distribution system comprises rectifier means, the outputs of which are connected to electric means that receive a rectified sinusoidal voltage. The conversion of this rectified voltage into a direct voltage suitable for a set of loads is performed in a set of converter means.
The power distribution system complies as a whole with the international standards referring to the harmonics content of the current supplied by the alternating current mains since each converter means individually compels the current that it receives to follow the waveform of the rectified voltage.
This architecture has certain drawbacks, such as the overall dimensions of the distribution system being penalised, since there are decentralised functions such as the implementation of power factor correction, which result in each converter means being larger in size. In addition, said converter means are less efficient and, consequently, the overall performance of the distribution system is also impaired. CHARACTERISATION OF THE INVENTION
To overcome the problems described above, an uninterrupted power supply system is proposed which is of an appropriate size and has suitable electrical operating characteristics for mounting together with telecommunications equipment.
The uninterrupted power supply system of the invention receives electric power from an electric power supply through some input terminals, and supplies a voltage and current level to a voltage distribution busbar to which a set of loads is connected.
The power supply system comprises first adapter means connected in parallel with rectifier means, which in turn are connected between the input terminals and some first output terminals, so that the power demanded by said loads flows permanently through the first adapter means.
The first adapter means compel the current supplied by the electric power supply to follow the waveform of the voltage supplied, also by the same electric power supply.
As a consequence, the uninterrupted power supply system achieves a high overall efficiency and a power factor close to unity, is economical and compact in size. BRIEF DESCRIPTION OF THE FIGURES
A more detailed explanation of the invention is given in the following description, based on the attached figures, in which: - figure 1 shows a block diagram of an uninterrupted power conversion system and its connection to an alternating current (AC) mains and to a load, according to the invention, and
- figure 2 shows a block diagram of a second implementation of the uninterrupted power conversion system according to the invention. DESCRIPTION OF THE INVENTION
Figure 1 shows a block diagram of a preferred implementation of the uninterrupted power conversion system of the invention, which is connected through some input terminals 1 1-1 and 1 1-2, respectively, to an electric power supply such as an alternating current (AC) mains, and through some first output terminals 12-1 and 12-2 supplies a voltage and current suitable for a predetermined number of loads 17-1 to 17-n, such as a telecommunications equipment.
The uninterrupted power conversion system comprises first adapter means 13 whose input terminals are respectively connected to the input terminals 11 -1 and 1 1-2, and its output terminals are respectively connected to the first output terminals 12-1 and 12-2, which in turn are connected to a voltage distribution busbar 14 to which the loads 17-1 to 17-n are connected.
Rectifier means 15 are connected in parallel with the first adapter means 13. Charger means 16 though some input terminals are connected to the input terminals 1 1 -1 and 1 1 -2, and are connected through second output terminals 16-2 and 16-3 to an energy storage facility 16-1.
The second output terminals 16-2 and 16-3 are respectively connected by cable to the first output terminals 12-1 and 12-2. A switching element 16-4 is installed on one of the cables which forms the electrical connection between the second output terminals 16-2 and 16-3 and the first output terminals 12-1 and 12-2.
The first adapter means 13 have the function of carrying out power factor correction so that the waveform of the input current follows the sinusoidal waveform of the voltage supplied, also, by the AC power supply through input terminals 1 1 -1 and 1 1 -2. Thus, the first adapter means 13 produce across the output terminals 12-1 and 12-2 an adequate, regulated voltage for the requirements of loads 17-1 to 17-n.
To carry out that described up to this point, the first adapter means 13 include a switched boost power converter, which is not described since it is well known in the state of the art. The boost power converter 13 performs the process of transforming the AC power into direct current (DC).
In normal operation of the uninterrupted power conversion system, all
AC power supplied by the AC power supply flows through the boost power converter 13, since the value of the voltage across the first output terminals 12-1 and 12-2 is greater than the peak value of the voltage across the input terminals 1 1 -1 and 1 1 -2, so that the rectifier means 15 remain cut off.
The uninterrupted power conversion system also comprises a second conversion path with capacity for storing energy and supplying it to the loads 17-1 to 17-n, in the event of loss of the AC power supply. Thus, the AC power supply feeds AC power to the charger means 16 that adapt it for storing in the energy storage battery 16-1 , such as a battery. The charger means 16 are known in the state of the art, for which reason they are not described herein.
When a fault occurs in the supply of AC power, the energy stored in the battery 16-1 is directly fed to the loads 17-1 to 17-n via the voltage distribution busbar 14, since the switching element 16-4 has been previously closed.
Figure 2 shows a block diagram of another preferred implementation.
In this case, the energy stored in the battery 16-1 , before being fed to the loads 17-1 to 17-n, is stepped up by means of second adapter means 16-5, such as a switched boost power converter.
For this purpose, the battery 16-1 is connected to the loads 17-1 to
17-n through the second adapter means 16-5, the switching element 16-4 and the voltage distribution busbar 14. When a malfunction occurs in the first adapter means 13 such that they are removed from service, the AC power supplied by the AC power supply flows entirely though the rectifier means 15, such as a full-wave rectifier bridge, which rectify it, and supply a rectified voltage to the loads
17-1 to 17-n via the voltage distribution busbar 14. However, in this operational scenario the uninterrupted power conversion system does not perform the power factor correction function.

Claims

1. - Uninterrupted power conversion system which is connected to an electric power supply through some input terminals (11-1 and 11-2), and supplies a voltage distribution busbar (14) through some first output terminals (12-1 and 12-2) at a suitable level of voltage and current to feed a set of loads (17-1 to 17-n), characterised in that it comprises first adapter means (13) connected in parallel with rectifier means (15) connected, in turn, across said input terminals (11-1 and 11-2) and said first output terminals (12-1 and 12-2), so that the power demanded by said loads (17-1 to 17-n) flows constantly through said first adapter means (13).
2. - Conversion system according to claim 1 , characterised in that said first adapter means (13) compel the current supplied by said electric power supply to follow the waveform of the voltage supplied, also, by said electric power supply.
3. - Conversion system according to any of claims 1 and 2, characterised in that an energy storage battery (16-1 ) supplies the power demanded by said loads (17-1 to 17-n), in the event of a failure in the supply of power from said electric power supply.
4. - Conversion system according to claim 3, characterised in that charger means (16) are connected to said input terminals (11-1 and 11-2), and are connected to said energy storage battery (16-1 ) via some second output terminals (16-2 and 16-3).
5. - Conversion system according to claim 4, characterised in that a switching means (16-4) has one of its ends connected to one of the first output terminals (12-2) and another of its ends connected to one of said second output terminals (16-2), so that said switching means (16-4) is closed when there is a failure in the supply of power from said electric power supply.
6. - Conversion system according to claim 5, characterised in that second adapter means (16-5) process the energy released from said energy storage facility (16-1 ) before it is fed to said voltage distribution busbar (14); said second adapter means (16-5) being connected between said switching means (16-4) and said second output terminals (16-2 and 16-3).
7. - Conversion system according to claim 3, characterised in that said energy storage battery (16-1 ) is a battery.
8. - Conversion system according to claim 1 , characterised in that said first adapter means (13) is a switched boost power converter.
9. - Conversion system according to claim 1 , characterised in that said rectifier means (15) is a full-wave rectifier bridge.
EP00943988A 1999-07-12 2000-06-22 Uninterrupted power conversion system Withdrawn EP1201016A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ES9901556 1999-07-12
ES9901556 1999-07-12
PCT/EP2000/006258 WO2001005012A1 (en) 1999-07-12 2000-06-22 Uninterrupted power conversion system

Publications (1)

Publication Number Publication Date
EP1201016A1 true EP1201016A1 (en) 2002-05-02

Family

ID=8309186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00943988A Withdrawn EP1201016A1 (en) 1999-07-12 2000-06-22 Uninterrupted power conversion system

Country Status (4)

Country Link
EP (1) EP1201016A1 (en)
JP (1) JP2003504999A (en)
CA (1) CA2379044A1 (en)
WO (1) WO2001005012A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114640102A (en) * 2022-05-18 2022-06-17 深圳市高斯宝电气技术有限公司 Direct current power supply

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4980812A (en) * 1989-11-09 1990-12-25 Exide Electronics Uninterrupted power supply system having improved power factor correction circuit
US5103388A (en) * 1990-09-18 1992-04-07 Hewlett-Packard Company Low harmonic current and fault tolerant power supply

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5646462A (en) * 1995-08-03 1997-07-08 Lucent Technologies Inc. DC voltage bypass power system architecture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4980812A (en) * 1989-11-09 1990-12-25 Exide Electronics Uninterrupted power supply system having improved power factor correction circuit
US5103388A (en) * 1990-09-18 1992-04-07 Hewlett-Packard Company Low harmonic current and fault tolerant power supply

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0105012A1 *

Also Published As

Publication number Publication date
WO2001005012A1 (en) 2001-01-18
CA2379044A1 (en) 2001-01-18
JP2003504999A (en) 2003-02-04

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