WO1999025052A1 - Controleur de la duree de vie de blocs d'alimentation - Google Patents

Controleur de la duree de vie de blocs d'alimentation Download PDF

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Publication number
WO1999025052A1
WO1999025052A1 PCT/JP1997/004072 JP9704072W WO9925052A1 WO 1999025052 A1 WO1999025052 A1 WO 1999025052A1 JP 9704072 W JP9704072 W JP 9704072W WO 9925052 A1 WO9925052 A1 WO 9925052A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
output current
deterioration
power
unit
Prior art date
Application number
PCT/JP1997/004072
Other languages
English (en)
Japanese (ja)
Inventor
Minoru Tsujihara
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
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 Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to PCT/JP1997/004072 priority Critical patent/WO1999025052A1/fr
Publication of WO1999025052A1 publication Critical patent/WO1999025052A1/fr

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

Definitions

  • the present invention relates to a life control device for a power supply device such as a parallel redundant system.
  • a device for preventing the life of the power supply device from being shortened there is, for example, a device described in JP-A-2-208708.
  • the technology described in this prior art relates to a current balance circuit for balancing the current supplied from a redundant power supply, and attempts to increase the length of the power supply by controlling the current balance at all times. Is what you do. However, when a local thermal load was applied to the power supply unit, no consideration was given to making the thermal load uniform, etc., so the part where the local thermal load was applied was not considered. There is a problem that the power supply unit has a short life.
  • FIGS. 12 and 13 show a conventional parallel redundant power supply failure monitoring device disclosed in Japanese Patent Application Laid-Open No. 5-300650, for example.
  • 1 & to 111 are ⁇ power supplies
  • 2 is a load connected to the power supply
  • 5 is an output current (load current) detection
  • 6 is a detection unit
  • 16 is a power supply.
  • This section shows a fault monitoring device that monitors load current and ambient temperature.
  • S1 is a step of reading the ambient temperature ⁇ 0 of the power supply installation location
  • S2 is a step of reading the load current Ia to I ⁇ of each power supply
  • S3 is a step of determining the number of failed power supply units
  • S4 is a step for predicting the ambient temperature ⁇ 0 and the load currents a to In of each power supply 1a to 1n.
  • S5 is an increase due to power supply failure when only one power supply has failed.
  • Step S7 predicts the temperatures T1 to Tn of the respective power supply units 1a to 1n after a predetermined time.S7 is the same as step S5.
  • a step of predicting Lnmax, S8 is a step of calculating the temperature Ta to Tn of the healthy power supply after a predetermined time from the predicted current of step S7. It is.
  • S9 is a step for comparing the numerical values predicted in steps S4, S6, and S8 with a reference value
  • S1 ⁇ is a step for issuing an alarm based on the comparison result in step S9.
  • the failure monitoring device 16 reads 3 ⁇ 4ST 0 around the power supply devices 1 a to: L n at a constant cycle (step S 1), and reads the load currents I a to In of the power supply devices 1 a to 1 n ( S 2).
  • the number of failed power supplies is determined from the value of the load current of the power supply device (eg, zero output current) (S3). From this judgment, the surroundings and load current when there is no faulty power supply are predicted (S4).
  • the 1 ⁇ parallel redundant power supply failure monitoring device predicts the ambient temperature after a predetermined time when a power supply failure occurs and issues an alarm, so the life of a power supply that has not yet failed depends on the ambient temperature rise. There is a problem in that it is necessary to manage the power-on time, ambient temperature, etc. to determine whether the power supply has become short. Also, if the power supply fails and the load balance force 5 'is not uniform, the load will concentrate on other power supplies, and only that power supply will be overloaded and its life will be shortened due to thermal stress There was a problem.
  • the present invention has been made in order to solve the above problems, and it is not necessary to record the life of a power supply, and a power supply having a shortened life is reduced in load to extend the life. It is an object of the present invention to provide a life control device of a power supply device which enables the power supply device.
  • a life control device for a power supply device is a power supply device for supplying power from a plurality of power supply devices (la) to (lc) to a common load (2), and detects an internal temperature of each power supply device.
  • the life of the power supply device can be extended. This is particularly true if the configuration of the power supply units (la) to (1c) is a parallel redundant system whose life is likely to be short.
  • the life monitoring means (3) uses the information on the deterioration state of the plurality of power supply units which have been changed to deterioration display means, and the deterioration display means displays the deterioration state and the replacement time information which have been ⁇ . Can be replaced before failure.
  • FIG. 1 is a professional diagram illustrating a life control device for a parallel redundant power supply device according to the present invention.
  • FIG. 2 is an explanatory view showing a state in which the life control device for a parallel redundant power supply shown in FIG. 1 is incorporated in an electronic device.
  • FIG. 3 is a flowchart showing a process flow of the life monitoring unit.
  • FIG. 10 is an explanatory diagram showing another example of a state in which the control device of the fourth redundant power supply unit is incorporated in an electronic device.
  • FIG. 5 is a block diagram showing a life control device of the parallel redundant power supply device of the present invention. Yes, an example is shown in which an output current control unit is provided commonly to three power supply devices.
  • FIGS. 6, 7, and 8 are block diagrams showing a life control device of the parallel redundant power supply device of the present invention.
  • FIG. 6 shows an example in which an energization time storage unit and a temperature storage unit are provided.
  • FIG. 7 shows an example in which an energization time storage, a section, a storage section, and an output current storage section are provided, and
  • FIG. 8 shows an example in which an energization time storage section and an output current storage section are provided.
  • FIG. 9 is a block diagram showing the life control device of the parallel redundant power supply device of the present invention, which is an example in which a deterioration display section for displaying the deterioration state of the power supply device is provided.
  • FIG. 10 is a block diagram showing a life control device for a parallel redundant power supply device according to the present invention, in which a variable cooling device for controlling the number of rotations of a cooling fan according to the deterioration state of the power supply device is provided.
  • FIG. 11 is a block diagram showing the IJ control device of the parallel redundant power supply device of the present invention, in which a notifying device for notifying the outside that the power supply device is about to be replaced is provided.
  • FIG. 12 is a block diagram showing a conventional fault monitoring system for a redundant power supply system.
  • FIG. 13 is a flowchart showing a conventional fault monitoring device for a parallel redundant power supply device.
  • FIG. 1 is a block diagram showing a life control device for a parallel redundant power supply according to Embodiment 1 of the present invention.
  • FIG. 2 is an explanatory view showing a state in which the life control device for a parallel redundant power supply shown in FIG. 1 is incorporated in an electronic device.
  • FIG. 3 is a flowchart illustrating a processing flow of the life monitoring unit.
  • the power supply life control device can be effectively applied to various electronic devices such as servers and non-stop computers.
  • la, lb, and lc are parallel redundant power supplies, and 2 is this power supply.
  • the life of the power supply is controlled by controlling the output current (load current).
  • the power supply units lb and lc have a power control unit 4, an output current detection unit 5, a temperature detection unit 6, and an output current control unit 7, similarly to the power supply unit la. I have.
  • Fig. 2 8 is an electronic device such as a computer
  • 9 is a ventilation unit for cooling the power supply units la, lb, and 1c
  • arrows A and B represent a flow of cooling air from the ventilation unit and the soot 9.
  • the power supply units 1a, lb, and 1c are provided on the leeward side of the cooling air.
  • the life monitoring unit 3 first reads the load current detected by the output current detection unit 5 and the internal temperature detected by the detection unit 6 of each power supply device 1a, lb, 1c (step S31). Next, the life monitoring unit 3 determines whether or not variations have occurred from the internal temperatures of the power supply devices la, lb, and 1 c (step S32).
  • the monitoring unit 3 controls the output current control unit 7 to reduce the load current of the power supply device whose internal temperature is rising (step S33).
  • the output current control unit 7 is controlled so as to increase the load current of the power supply device having a low inside (step S34).
  • the power supply units la, lb, and lc are sequentially arranged on the leeward side of the wind by the blower unit 9; the inside of the power supply unit 1c is the highest; The inside of the power supply is higher in the order of 1a.
  • the internal temperature of the power supply unit 1b in the middle becomes higher than the power supplies la and lc on both sides.
  • the life monitoring unit 3 calculates an average value from the maximum value and the minimum value of the inside detected by the detection unit 6, sets the average value as a reference: and determines whether the inside is lower or lower than the reference distance.
  • the load current of the power supply may be reduced or increased.
  • the element that determines the life is the electrolytic capacitor (not shown) that has the shortest life among the components that make up the power supply unit.
  • the life of the power supply device is determined by the length of the life of the electrolytic capacitor. Therefore, although the 3 ⁇ 4Jg detector 6 measures the temperature inside the power supply, it is preferable to install the 3 ⁇ 4Jg detector 6 so as to detect ⁇ ⁇ S around the electrolytic capacitor. As a result, the accuracy of measuring the life (temperature) of the power supply devices la, lb, and lc can be improved.
  • FIG. 2 it is assumed that the power supply units la, lb, and 1 c are cooled by the air blow unit 9, and that the blowing air of the air blow unit 9 flows from the arrow A direction to the arrow B direction. Since the power supply 1c is located on the leeward side of the power supplies la and 1b, the power supply 1c receives heat corresponding to a temperature rise due to heat generated from the inside of the power supplies 1a and 1b. Similarly, since the power supply 1b is located on the leeward side of the power supply 1a, the power supply 1b receives the heat of the temperature rise due to the heat generated from the inside of the power supply 1a.
  • the life monitoring unit 3 reduces the load current of the power supply 1c by the output current control unit 7 of the power supply 1c, because the internal SJg (particularly around the electrolytic capacitor) power is increasing in the power supply lc. Then, lower the internal temperature of the power supply 1c itself. Similarly, the life monitoring unit 3 increases the internal temperature of the power supply 1b (particularly the ambient temperature of the electrolytic condenser). As the temperature rises, the load current of the power supply 1b is slightly reduced by the output current control unit 7 of the power supply 1b, and the internal temperature of the power supply lb itself is slightly reduced.
  • the life monitoring unit 3 uses the output current control unit of the power supply 1a because the internal temperature of the power supply la (particularly the ambient temperature of the electrolytic capacitor) is lower than those of the other power supplies 1b and 1c. 7, the load current of the power supply 1a is increased, and the load current to the load 2 is kept constant.
  • the preferred embodiment in which the power supply device is configured in a parallel redundant system in which the life is easily shortened has been described.
  • two power supply devices may be configured in parallel, or four or more power supply devices may be used.
  • a parallel configuration may be used.
  • the power supply devices la, lb, and 1c are arranged on the downwind side of the blower unit 9 and three of them are incorporated in the electronic device 8, for example, as shown in FIG.
  • the power supply units 1 a to 1 c are arranged on the windward side of the air blow unit 9 and between each component of the electronic device 8 and each air blow unit 9, and a partition plate 1 ⁇ separates between the air passages. It may be partitioned.
  • the ⁇ in which the output current control unit 7 is disposed in each of the power supply devices la, lb, and 1c has been exemplified.
  • the output current of the power supply device la, lb, 1c may be controlled.
  • the device configuration can be simplified, and the device cost can be reduced.
  • FIG. 6 is a block diagram showing a life control device for a parallel redundant power supply according to Embodiment 2 of the present invention.
  • la, lb, and lc are power supply units
  • 2 is a load unit connected to the power supply unit
  • 3 is a load current of the power supply unit, monitoring the inside of the power supply unit 3 ⁇ 4S, and controlling the output voltage of the power supply unit.
  • a life monitoring unit that calculates the life of the power supply 4 is a power control unit of the power supply, 5 is an output current detecting section for detecting the load current of the power supply, 6 is a temperature detecting section for detecting the temperature inside the power supply3 ⁇ 4S detecting section, 7 is an output current control section for controlling the output current of the power supply, and 10 is a power control section 4 An energization time storage unit that is connected to the power supply unit and stores the time during which power is supplied to the power supply unit.
  • the power supply units lb and lc are not shown in the figure, but as in the case of the power supply unit la, the power supply control unit 4, the output current detection unit 5, the detection unit 6, the output current control unit 7, and the conduction time storage Part 10 and 10 Words and Memories, Part 11.
  • the temperature storage unit 11 stores how many hours the internal temperature (the ambient temperature of the electrolytic capacitor) of the power supply devices la, lb, and 1c detected by the temperature detector 6 has elapsed.
  • the monitoring unit 3 reads the values stored in the temperature storage unit 11 and the energization time storage unit 10 from each power supply device la, lb, 1c.
  • the life monitoring unit 3 determines the power of each power supply la, lb, lc based on the read values of the internal power supply 1a, lb, lc and the power-on time of the power supply la, lb, 1c. Estimate the state of deterioration.
  • the life monitoring unit 3 determines that the longer the power supply time of each power supply device 1a, lb, 1c and the higher the internal temperature, the greater the deterioration.
  • the output current control unit 3 When the life monitoring unit 3 determines that a variation has occurred from the estimated deterioration state of each of the power supply units 1 a, lb, and 1 c, the output current control unit 3 reduces the load current of the power supply unit with the greatest deterioration. 7, the output current control unit 7 is controlled so as to increase the load current of the power supply device with little deterioration.
  • the life monitoring unit 3 uses the deterioration information file stored in advance in the deterioration condition storage unit to calculate the electronic temperature corresponding to a ° C and b hours.
  • a configuration may be adopted in which deterioration information (for example, 10 ° / 0 deterioration) of parts is taken out and the deterioration state of each power supply device la, lb, 1c is estimated.
  • the life monitoring unit 3 calculates the maximum value of the obtained deterioration state of each power supply device la, lb, 1 c (for example, 2 ⁇ ).
  • the average value (for example, 15% deterioration) of the minimum value (for example, 10% deterioration) and the minimum value (for example, 15% deterioration) are obtained, and this is set as the deterioration reference value. From this deterioration reference value, it is determined whether the deterioration is large or small.
  • the life monitoring unit 3 uses the load current (output current) of each power supply la, lb, lc based on the output current file registered in advance to make the deterioration state of each power supply la, lb, 1c the same.
  • the output current a which has been degraded by 10%, is increased until the output current b, which is equal to the degradation reference (15%), is increased. Decrease the output current until the output current reaches b.
  • the life between the power supply devices la, lb, and 1c can be made substantially the same, The overall length of the electronic device 8 can be increased.
  • the output current control unit 7 is configured by the conduction time storage unit 10 and the storage unit 11 in order to estimate the deterioration of each power supply from the conduction time of each power supply and the inside. As shown in FIG. 7, an output current control unit 7 is added to a conduction time storage unit 10 and a storage unit 11, and the output current of the power supply is detected.
  • the current storage unit 12 may be provided.
  • the monitoring unit 3 determines that the longer the energizing time, the larger the internal 3 ⁇ 4g, and the lower the output current value, the greater the deterioration. Since the deterioration of each power supply can be estimated from ag and the output current value, the same effect as in the above embodiment can be obtained.
  • the output current control unit 7 may be configured by a conduction time storage unit 10 and an output current storage unit 12.
  • the life monitoring unit 3 determines that the longer the energizing time and the lower the output current value, the greater the deterioration, and determines the deterioration of each power source from the energizing time and output current value of each power source. Can be estimated, and the same effect as in the above embodiment can be obtained.
  • FIG. 9 is a block diagram showing a parallel redundancy power supply life control device according to Embodiment 3 of the present invention.
  • FIG. 9 the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and 13 denotes a deterioration monitor that displays the deterioration state of each of the power supply units la, lb, and 1c by the life monitoring unit 3. It is.
  • the life monitoring unit 3 transfers to the deterioration display unit 13 deterioration information in which the deterioration state of each of the power supply units l a, l b, and 1 c is estimated.
  • the deterioration display section 13 digitally displays the transmitted deterioration information.
  • the deterioration information may be, for example, numerical information indicating the deterioration frequency JS, or may be information based on a message indicating the deterioration state.
  • the display on the deterioration display unit 13 allows the worker (user) to know the deterioration state of each power supply, it is possible to easily judge when to replace the power supplies la, lb, and 1c. Therefore, it is possible to reliably replace the power supply device before it breaks down.
  • the deterioration display is displayed digitally here, a similar effect can be obtained even with a display device that can be judged by humans by turning on a color-coded lamp or a semiconductor display device such as an LED.
  • the deterioration display section 13 may be provided for each power supply unit, or one deterioration display section 13 may collectively display deterioration information of a plurality of power supply units or switch and display the deterioration information. Is also good.
  • the state of deterioration is displayed irrespective of the replacement time, but when the replacement time is reached, information indicating the replacement time (for example, a message saying that it is time to replace) is displayed. You may comprise so that it may display.
  • the life monitoring unit 3 estimates the deterioration state of each power supply, and the deterioration state exceeds a predetermined deterioration reference value of the power supply.
  • the display unit 13 displays the transferred exchange time information. 1
  • FIG. 10 is a block diagram showing a life controlling device for a parallel redundant power supply according to Embodiment 4 of the present invention.
  • the same reference numerals as those in FIG. 7 denote the same or corresponding parts, and 14 is connected to the life monitoring unit 3, and the cooling capacity is made variable by a control signal to cool each of the power supply units 1a, lb, lc. It is a variable rejection device that performs cooling and can increase or decrease the frequency of cooling fan rotation.
  • the service life monitoring unit 3 judges the deterioration MS of the power supply la, lb, 1c from the estimated value of the deterioration state of each power supply device la, lb, and 1 c, and the cooling fan of the variable cooling device 14 of the power supply device whose deterioration progresses at a high rate. By increasing the number of rotations of the power supply, the deterioration progress speed of the power supply is slowed.
  • the variable cooling device 14 has been described as being capable of increasing or decreasing the number of cooling fan rotations, any device that can control the cooling effect of the power supply device may be used. For example, a semiconductor cooling device using the Peltier effect is used. Alternatively, the cooling effect may be controlled to increase or decrease.
  • FIG. 11 is a professional / request diagram showing a life control device for a parallel redundant power supply according to Embodiment 5 of the present invention.
  • reference numeral 15 denotes a life monitoring unit 3, which is a notification device for reporting the deterioration state of each of the power supply devices 1a, lb, and 1c.
  • the life monitoring unit 3 transfers the deterioration information, which estimates the deterioration state of each power supply device la, lb, 1c, to the notifying device 15 0
  • the notifying device 15 sends the sent deterioration information to the outside as voice or document message .
  • the notification device 15 is connected to, for example, a remote life monitoring unit 3 by wire or wirelessly. ⁇

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

L'invention concerne un contrôleur de la durée de vie d'un bloc d'alimentation qui peut prolonger la durée de vie de plusieurs blocs d'alimentation dans leur ensemble, en assurant l'uniformisation de leurs états de dégradation. Ce contrôleur comprend des blocs d'alimentation (1a - 1c), une charge commune (2) qui est alimentée en puissance électrique à partir de chaque bloc, un moyen de détection de la température (6) qui détecte la température interne de chaque bloc, un moyen de commande du courant de sortie (5) qui commande le courant de sortie de chaque bloc, et un moyen de contrôle de la durée de vie (3) qui uniformise les températures internes des blocs en réduisant les courants de sortie des blocs dont la température interne est plus élevée, et en augmentant ces mêmes courants pour les blocs dont la température interne est plus faible, lorsque l'on observe une différence parmi les températures internes des blocs.
PCT/JP1997/004072 1997-11-10 1997-11-10 Controleur de la duree de vie de blocs d'alimentation WO1999025052A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/004072 WO1999025052A1 (fr) 1997-11-10 1997-11-10 Controleur de la duree de vie de blocs d'alimentation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/004072 WO1999025052A1 (fr) 1997-11-10 1997-11-10 Controleur de la duree de vie de blocs d'alimentation

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WO1999025052A1 true WO1999025052A1 (fr) 1999-05-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008309949A (ja) * 2007-06-13 2008-12-25 Sharp Corp 電子機器
JP2012175885A (ja) * 2011-02-24 2012-09-10 Nec Computertechno Ltd 電源装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0241623A (ja) * 1988-07-29 1990-02-09 Fujitsu Ltd 安定化電源装置の並列運転方式
JPH02230321A (ja) * 1989-03-02 1990-09-12 Oki Electric Ind Co Ltd 多ビット一致回路
JPH0522862A (ja) * 1991-07-08 1993-01-29 Nec Corp 並列運転用電源装置
JPH05281001A (ja) * 1992-04-03 1993-10-29 Fuji Electric Co Ltd 部品の寿命時間予測装置
JPH05300650A (ja) * 1992-04-21 1993-11-12 Meidensha Corp 並列冗長方式電源の故障監視装置
JPH06233553A (ja) * 1993-01-28 1994-08-19 Mitsubishi Electric Corp インバータ装置
JPH07322493A (ja) * 1994-05-30 1995-12-08 Matsushita Seiko Co Ltd 空気調和機の電源装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0241623A (ja) * 1988-07-29 1990-02-09 Fujitsu Ltd 安定化電源装置の並列運転方式
JPH02230321A (ja) * 1989-03-02 1990-09-12 Oki Electric Ind Co Ltd 多ビット一致回路
JPH0522862A (ja) * 1991-07-08 1993-01-29 Nec Corp 並列運転用電源装置
JPH05281001A (ja) * 1992-04-03 1993-10-29 Fuji Electric Co Ltd 部品の寿命時間予測装置
JPH05300650A (ja) * 1992-04-21 1993-11-12 Meidensha Corp 並列冗長方式電源の故障監視装置
JPH06233553A (ja) * 1993-01-28 1994-08-19 Mitsubishi Electric Corp インバータ装置
JPH07322493A (ja) * 1994-05-30 1995-12-08 Matsushita Seiko Co Ltd 空気調和機の電源装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008309949A (ja) * 2007-06-13 2008-12-25 Sharp Corp 電子機器
JP2012175885A (ja) * 2011-02-24 2012-09-10 Nec Computertechno Ltd 電源装置

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