JP2009077472A - Power supply device - Google Patents

Power supply device Download PDF

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Publication number
JP2009077472A
JP2009077472A JP2007241886A JP2007241886A JP2009077472A JP 2009077472 A JP2009077472 A JP 2009077472A JP 2007241886 A JP2007241886 A JP 2007241886A JP 2007241886 A JP2007241886 A JP 2007241886A JP 2009077472 A JP2009077472 A JP 2009077472A
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JP
Japan
Prior art keywords
power supply
relay
standby
power source
voltage
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Pending
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JP2007241886A
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Japanese (ja)
Inventor
Shigeru Yamaguchi
繁 山口
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Panasonic Corp
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Panasonic Corp
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Priority to JP2007241886A priority Critical patent/JP2009077472A/en
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    • 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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem associated with power supply devices having two power supply systems, power supply for standby and main power supply, when power supply is restored from service interruption, a large rush current flows and there is a possibility that a first relay or a second relay may be damaged or destroyed. <P>SOLUTION: The power supply device operates, such that: when alternating-current power supply 1 is interrupted due to service interruption, or the like, and when the power supply 5 for standby is first turned off, the supply voltage of the standby power supply is detected by a standby supply voltage detecting means 10; and when the detected supply voltage falls below a predetermined voltage, the second relay is turned off; and as a result of preventing large rush current from flowing when the alternating-current voltage is restored, damages and destruction of the first relay and the second relay can be prevented. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、電源装置に関するものである。   The present invention relates to a power supply device.

図２は、特許文献１に記載された従来の電源装置を示すものである。   FIG. 2 shows a conventional power supply device described in Patent Document 1. In FIG.

図２に示すように、本電源装置は交流電源と、突入電流を防止するための突入電流防止素子と、第２のリレーと、第１のリレーと、リレーＯＦＦ時の電源である待機用電源と、リレーＯＮ時の電源であるメイン電源と、両リレーを駆動するリレー駆動手段と、第２のリレーを駆動させるための第２のリレー駆動電源と、第１のリレーを駆動させるための第１のリレー駆動電源から構成されている。   As shown in FIG. 2, the power supply apparatus includes an AC power supply, an inrush current preventing element for preventing an inrush current, a second relay, a first relay, and a standby power supply that is a power supply when the relay is OFF. A main power source that is a power source when the relay is ON, relay drive means for driving both relays, a second relay drive power source for driving the second relay, and a first power source for driving the first relay 1 relay drive power source.

前記電源装置では待機時の制御用電源である待機用電源と、両リレーＯＮ時の電源であるメイン電源が複合した２電源システムで、リレー駆動手段の電源電圧は両電源より供給されていた。   In the power supply apparatus, a standby power source that is a control power source during standby and a main power source that is a power source when both relays are ON are combined, and the power source voltage of the relay driving means is supplied from both power sources.

また、図３に示すように、それぞれのリレーは交流電源投入後待機用電源が起動し、リレー駆動手段の電源電圧の第１のリレー駆動電源が供給され、リレー駆動手段によって、第１のリレーをＯＮさせ、突入電流防止素子を通ってメイン電源へ電圧が供給され、メイン電源が起動し、第２のリレー駆動電源が供給され、リレー駆動手段によって第２のリレーがＯＮするものであった。
特開２００５−１１４２４９号公報 Further, as shown in FIG. 3, each relay is activated by the standby power supply after the AC power is turned on, and the first relay drive power supply of the power supply voltage of the relay drive means is supplied, and the first relay is supplied by the relay drive means. Is turned on, a voltage is supplied to the main power supply through the inrush current prevention element, the main power supply is activated, the second relay drive power supply is supplied, and the second relay is turned on by the relay drive means. .
JP 2005-114249 A

しかしながら、前記従来の構成では、図４に示すように、待機用電源とメイン電源が動作時に停電などによって交流電源が遮断されたとき、場合によっては待機電源が先に停止する場合がある。そのとき、メイン電源は動作を継続し、リレー駆動手段の電源電圧は供給されるため、リレー駆動手段は、第１のリレーと、第２のリレーを駆動し続けようとするが、待機用電源は停止しているため、第１のリレーはＯＦＦとなる。第２のリレーがＯＮ、第１のリレーがＯＦＦとなっている区間で交流電源が復帰したとき、リレー駆動手段は、両方のリレーを駆動し続けようとしているため、待機用電源５が動作すると同時に第１のリレーがＯＮする。そのとき第２のリレーはＯＮしているために大きな突入電流が流れ、場合によっては第２のリレーが損傷、破壊に至るという課題を有していた。   However, in the conventional configuration, as shown in FIG. 4, when the AC power supply is cut off due to a power failure or the like when the standby power supply and the main power supply operate, the standby power supply may stop first in some cases. At that time, since the main power supply continues to operate and the power supply voltage of the relay drive means is supplied, the relay drive means tries to continue to drive the first relay and the second relay. Is stopped, the first relay is turned off. When the AC power is restored while the second relay is ON and the first relay is OFF, the relay driving means tries to continue driving both relays. At the same time, the first relay is turned on. At that time, since the second relay is ON, a large inrush current flows, and in some cases, the second relay has a problem of being damaged or broken.

本発明は前記従来の課題を解決するもので、入力の交流電圧の異常時に、第１のリレーと第２のリレーの損傷や破壊を防止することを可能とした電源装置を提供することを目的としている。   SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a power supply device that can prevent damage and destruction of a first relay and a second relay when an input AC voltage is abnormal. It is said.

前記従来の課題を解決するために、本発明の電源装置は、入力の交流電圧の異常時に、第２のリレーをＯＦＦすることにより、交流電圧が正常となったときに第１のリレーと第２のリレーに流れる突入電流を防ぐことを可能としている。   In order to solve the above-described conventional problems, the power supply device of the present invention is configured such that when the AC voltage becomes normal by turning off the second relay when the input AC voltage is abnormal, It is possible to prevent an inrush current flowing through the second relay.

本発明の電源装置は、入力の交流電圧の異常時に、第２のリレーをＯＦＦすることにより、交流電圧が正常となったときに第２のリレーと第１のリレーに流れる突入電流を防ぐ
ことを実現することができる。 The power supply device of the present invention prevents the inrush current flowing through the second relay and the first relay when the AC voltage becomes normal by turning off the second relay when the input AC voltage is abnormal. Can be realized.

第１の発明は交流電源と、突入電流を防止するための突入電流防止素子と、交流電源ラインの両側に各々直列に接続され交流電源ラインを開閉する第１及び第２のリレーと、リレーＯＦＦ時の電源である待機用電源と、リレーＯＮ時の電源であるメイン電源と、両リレーを駆動するリレー駆動手段と、第１のリレーを駆動させるための第１のリレー駆動電源と、第２のリレーを駆動させるための第２のリレー駆動電源と、前記交流電源の異常時に待機用電源の電圧値を検出する待機用電源電圧検出手段とを備えたことにより、入力の交流電圧１の異常時に第２のリレーをＯＦＦすることにより、交流電圧が正常となったときに第１のリレーと第２のリレーに流れる突入電流を防ぐことができる。   According to a first aspect of the present invention, there is provided an AC power source, an inrush current preventing element for preventing an inrush current, first and second relays connected in series on both sides of the AC power source line, and opening and closing the AC power source line, and a relay OFF Power supply for standby, a main power supply that is a power supply when the relay is ON, relay drive means for driving both relays, a first relay drive power supply for driving the first relay, and a second power supply An abnormality in the input AC voltage 1 by providing a second relay drive power source for driving the relay and a standby power supply voltage detecting means for detecting the voltage value of the standby power supply when the AC power supply is abnormal By turning off the second relay sometimes, it is possible to prevent an inrush current flowing through the first relay and the second relay when the AC voltage becomes normal.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の第１の実施の形態における電源装置の構成図を示すもので、交流電源１と、突入電流を防止するための突入電流防止素子２と、第２のリレー３と、第１のリレー ４と、リレーＯＦＦ時の電源である待機用電源５と、リレーＯＮ時の電源であるメイン電源６と、両リレーを駆動するリレー駆動手段７と、第２のリレー３を駆動させるための第２のリレー駆動電源８と、第１のリレー４を駆動させるための第１のリレー駆動電源９と、待機用電源５の電源電圧を検出する待機電源電圧検出手段１０から構成されている。 (Embodiment 1)
FIG. 1 shows a configuration diagram of a power supply device according to a first embodiment of the present invention. An AC power supply 1, an inrush current preventing element 2 for preventing an inrush current, a second relay 3, The first relay 4, the standby power source 5 that is the power source when the relay is OFF, the main power source 6 that is the power source when the relay is ON, the relay driving means 7 that drives both relays, and the second relay 3 are driven A second relay driving power source 8 for driving the first relay driving power source 9 for driving the first relay 4, and a standby power source voltage detecting means 10 for detecting the power source voltage of the standby power source 5. ing.

以上のように構成された電源装置について、以下その動作、作用を説明する。   About the power supply device comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

待機用電源５とメイン電源６が動作時に停電などによって交流電源１が遮断されたとき、待機用電源５が先にＯＦＦになる場合において、待機電源電圧検出手段１０によって、待機電源の電源電圧を検知し、所定の電圧を下回った場合、第２のリレー３をＯＦＦし、交流電圧復帰時に大きな突入電流が流れるのを防止することにより第１のリレーおよび第２のリレーの損傷や破壊の防止を実現することができる。   When the standby power supply 5 and the main power supply 6 are operated and the AC power supply 1 is cut off due to a power failure or the like, the standby power supply voltage detection means 10 sets the power supply voltage of the standby power supply when the standby power supply 5 is turned off first. When it is detected and falls below a predetermined voltage, the second relay 3 is turned off to prevent the first and second relays from being damaged or destroyed by preventing a large inrush current from flowing when the AC voltage is restored. Can be realized.

以上のように、本発明にかかる電源装置は、２つの電源システムの電源装置全てにおいて適用可能である。   As described above, the power supply device according to the present invention can be applied to all the power supply devices of the two power supply systems.

本発明の実施の形態１における電源装置の構成図Configuration diagram of power supply device according to Embodiment 1 of the present invention 従来の電源装置の構成図Configuration diagram of conventional power supply 従来の電源装置の起動時の制御フローチャートControl flowchart for starting up a conventional power supply 従来の電源装置の入力交流電圧異常時の動作のフローチャートFlowchart of operation when input AC voltage is abnormal in a conventional power supply device

符号の説明Explanation of symbols

１ 交流電源
２ 突入電流防止素子
３ 第２のリレー
４ 第１のリレー
５ 待機用電源
６ メイン電源
７ リレー駆動手段
８ 第１のリレー駆動電圧
９ 第２のリレー駆動電圧
１０ 待機用電源電圧検出手段 DESCRIPTION OF SYMBOLS 1 AC power supply 2 Inrush current prevention element 3 2nd relay 4 1st relay 5 Standby power supply 6 Main power supply 7 Relay drive means 8 1st relay drive voltage 9 2nd relay drive voltage 10 Standby power supply voltage detection means

Claims (1)

交流電源と、突入電流を防止するための突入電流防止素子と、交流電源ラインの両側に各々直列に接続され交流電源ラインを開閉する第１及び第２のリレーと、リレーＯＦＦ時の電源である待機用電源と、リレーＯＮ時の電源であるメイン電源と、両リレーを駆動するリレー駆動手段と、第１のリレーを駆動させるための第１のリレー駆動電源と、第２のリレーを駆動させるための第２のリレー駆動電源と、前記交流電源の異常時に待機用電源の電圧値を検出する待機用電源電圧検出手段を備え、待機用電源の電圧が所定の電圧を下回った場合、第２のリレーの接点をＯＦＦすることを特徴とした電源装置。 An AC power source, an inrush current preventing element for preventing an inrush current, first and second relays connected in series on both sides of the AC power source line and opening and closing the AC power source line, and a power source when the relay is OFF A standby power source, a main power source that is a power source when the relay is ON, a relay driving unit that drives both relays, a first relay driving power source that drives the first relay, and a second relay And a standby power supply voltage detecting means for detecting a voltage value of the standby power supply when the AC power supply is abnormal, and when the standby power supply voltage falls below a predetermined voltage, The power supply device characterized by turning off the contact of the relay.
JP2007241886A 2007-09-19 2007-09-19 Power supply device Pending JP2009077472A (en)

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