JPH099487A - Controller for air conditioner - Google Patents
Controller for air conditionerInfo
- Publication number
- JPH099487A JPH099487A JP7180949A JP18094995A JPH099487A JP H099487 A JPH099487 A JP H099487A JP 7180949 A JP7180949 A JP 7180949A JP 18094995 A JP18094995 A JP 18094995A JP H099487 A JPH099487 A JP H099487A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- phase
- unbalance
- phase power
- current
- 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.)
- Pending
Links
Landscapes
- Air Conditioning Control Device (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、コンプレッサの駆動電
動機として三相誘導電動機が用いられたルームエアコン
等の空気調和装置の電源制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply controller for an air conditioner such as a room air conditioner in which a three-phase induction motor is used as a drive motor for a compressor.
【０００２】[0002]
【従来の技術】インバータ電源を用いた空気調和装置で
は、コンバータにより三相交流を直流に変換し、変換さ
れた直流をＰＷＭ（パルス幅変調）制御によりインバー
タを制御し、可変周波数制御の電力をコンプレッサのモ
ータに供給して可変能力運転を行うようになっている。
コンプレッサのモータには、三相誘導電動機が使用され
る。2. Description of the Related Art In an air conditioner using an inverter power source, a converter converts three-phase alternating current into direct current, and the converted direct current is controlled by PWM (pulse width modulation) to control the inverter to supply power for variable frequency control. It is designed to be supplied to the compressor motor for variable capacity operation.
A three-phase induction motor is used for the compressor motor.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、空気調
和装置の設置環境に伴う電力品質の問題、電源配線の端
子のゆるみあるいは断線等に起因して、三相電源の欠相
あるいは電源電圧の不平衡が発生する場合がある。However, due to power quality problems associated with the installation environment of the air conditioner, loosening or disconnection of the terminals of the power supply wiring, the open phase of the three-phase power supply or the imbalance of the power supply voltage is caused. May occur.
【０００４】正常時には三相誘導電動機の各相電流はほ
ぼバランスした電流値になっているため電源電流は負荷
に応じて流れるのであるが、欠相あるいは電源電圧の不
平衡が発生した場合には電動機を流れる電流がアンバラ
ンスとなり、欠相あるいは不平衡が発生していない正常
相にかなりの相電流が流れることになる。その電流量
は、負荷状態によっても多少異なるが、コンプレッサで
欠相試験を行った場合、正常な相に流れる電流値は例え
ば通常時の約４倍以上に増加するようなことが起こる。In a normal state, the phase currents of the three-phase induction motor have almost balanced current values, so that the power supply current flows according to the load. However, when a phase loss or power supply voltage imbalance occurs. The current flowing through the motor becomes unbalanced, and a considerable amount of phase current flows in the normal phase in which no open phase or unbalance has occurred. The amount of the current varies somewhat depending on the load condition, but when the open-phase test is performed with the compressor, the current value flowing in the normal phase may increase, for example, about four times or more that in the normal state.
【０００５】また、電圧不平衡の場合には、不平衡率の
２乗に比例した電流不平衡が発生すると言われており、
このような状態が長時間続くと、電動機の巻線が発熱
し、最終的には溶断に至ることが多い。In the case of voltage imbalance, it is said that a current imbalance proportional to the square of the imbalance ratio occurs.
If such a state continues for a long time, the windings of the electric motor often generate heat, and eventually the fuse is often cut.
【０００６】本発明の目的は、簡単な構成で、三相電源
線に流れる電流を検出することにより電源異常に伴う不
具合の発生を防止し得る空気調和装置の制御装置を提供
することにある。An object of the present invention is to provide a control device for an air conditioner, which has a simple structure and can prevent the occurrence of a defect due to an abnormality in the power supply by detecting the current flowing through the three-phase power supply line.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に、請求項１記載の発明は、三相電源と、この三相電源
からの電流が三相の電源線を介して供給される三相誘導
電動機を有する空気調和機の電源制御装置において、前
記三相の電源線に配置された電流検出器と、前記電流検
出器の出力電圧に基づいて前記三相電源電圧の各相間の
不平衡状態を検出する不平衡検出手段とを備えて構成さ
れる。In order to solve the above-mentioned problems, the invention according to claim 1 is a three-phase power source, and three currents from the three-phase power source are supplied through three-phase power lines. In a power supply control device for an air conditioner having a phase induction motor, a current detector arranged on the three-phase power supply line and an imbalance between respective phases of the three-phase power supply voltage based on an output voltage of the current detector. And an unbalance detecting means for detecting a state.
【０００８】請求項２記載の発明は、三相電源と、この
三相電源からの電流が三相の電源線を介して供給される
三相誘導電動機を有する空気調和機の電源制御装置にお
いて、前記三相の電源線における電源電圧の不平衡状態
を検出する不平衡検出手段と、前記電源電圧の各相間の
不平衡状態が発生した場合に前記三相誘導電動機への電
源供給を停止する電源制御手段とを備えて構成される。According to a second aspect of the present invention, there is provided a power supply control device for an air conditioner having a three-phase power supply and a three-phase induction motor to which current from the three-phase power supply is supplied via a three-phase power supply line. Unbalance detection means for detecting an unbalanced state of the power supply voltage in the three-phase power supply line, and a power supply for stopping the power supply to the three-phase induction motor when an unbalanced state between the phases of the power supply voltage occurs. And a control means.
【０００９】請求項３に記載の発明は、三相電源と、こ
の三相電源からの電流が三相の電源線を介して供給され
る三相誘導電動機を有する空気調和装置の電源制御装置
において、前記三相の電源線における電源電圧の各相間
の不平衡状態を検出する不平衡検出手段と、前記三相電
源電圧の各相間の不平衡状態が発生した場合に異常を報
知する異常報知手段とを備えて構成される。According to a third aspect of the present invention, there is provided a power supply control device for an air conditioner having a three-phase power supply and a three-phase induction motor to which current from the three-phase power supply is supplied through a three-phase power supply line. An unbalance detecting means for detecting an unbalanced state between the phases of the power supply voltage in the three-phase power supply line; and an abnormality notifying means for notifying an abnormality when the unbalanced state between the phases of the three-phase power supply voltage occurs. And is configured.
【００１０】請求項４に記載の発明は、三相電源と、こ
の三相電源からの電流が三相の電源線を介して供給され
る三相誘導電動機を有する空気調和装置の電源制御装置
において、前記三相の電源線における電源電圧の不平衡
状態を検出する不平衡検出手段と、前記三相電源電圧の
各相間の不平衡状態が発生した場合に前記三相誘導電動
機への電源供給を停止する電源制御手段と、前記電源電
圧の不平衡状態が発生した場合に異常を報知する異常報
知手段とを備えて構成される。According to a fourth aspect of the present invention, there is provided a power supply control device for an air conditioner having a three-phase power supply and a three-phase induction motor to which current from the three-phase power supply is supplied via a three-phase power supply line. An unbalance detecting means for detecting an unbalanced state of the power supply voltage in the three-phase power supply line, and a power supply to the three-phase induction motor when an unbalanced state between each phase of the three-phase power supply voltage occurs. It is configured to include a power supply control unit that stops and an abnormality notification unit that notifies an abnormality when an unbalanced state of the power supply voltage occurs.
【００１１】[0011]
【作用】請求項１に記載の発明によれば、三相電圧の
Ｒ、Ｓ、Ｔの各相の電圧が平衡状態にある場合には、電
流検出器（ＣＴ）の出力電圧Ｖout はほぼ０［Ｖ］であ
る。ところが、何らかの原因により不平衡（欠相も含
む）が生じると、電流検出器は三相の電源線に配置さ
れ、具体的には三相の電源線を一体にして巻回されてい
るので電流検出器の出力電圧Ｖout は０［Ｖ］になら
ず、不平衡状態に応じてＲ、Ｓ、Ｔ各相のベクトル合成
によって決まる出力電圧Ｖout が発生する。この出力電
圧Ｖout の大きさが所定の値を越えた場合に、不平衡検
出手段は不平衡状態が生じていることを検出する。この
ように、三相電源線の電流量を監視することにより、空
調調和装置の電源異常を検出することができる。According to the first aspect of the present invention, when the voltages of the three-phase voltages R, S and T are in a balanced state, the output voltage Vout of the current detector (CT) is almost zero. [V]. However, if an imbalance (including open phase) occurs for some reason, the current detector is placed on the three-phase power supply line. The output voltage Vout of the detector does not become 0 [V], and the output voltage Vout determined by the vector combination of the R, S, and T phases is generated according to the unbalanced state. When the magnitude of the output voltage Vout exceeds a predetermined value, the unbalance detecting means detects that an unbalanced state has occurred. As described above, by monitoring the current amount of the three-phase power supply line, it is possible to detect the power supply abnormality of the air conditioning conditioner.
【００１２】請求項２に記載の発明において、三相電圧
のＲ、Ｓ、Ｔの各相の電圧が平衡状態にある場合には、
電流検出器（ＣＴ）の出力電圧Ｖout はほぼ０［Ｖ］で
ある。ところが、何らかの原因、例えば電力品質の劣悪
さ等の理由により不平衡（欠相も含む）が生じると、電
流検出器は三相の電源線に配置されているので電流検出
器の出力電圧Ｖout は０［Ｖ］にならず、不平衡状態に
応じてＲ、Ｓ、Ｔ各相のベクトル合成によって決まる出
力電圧Ｖout が発生する。この出力電圧Ｖoutの大きさ
が所定の値を越えた場合に、不平衡検出手段は不平衡状
態が生じていることを検出する。不平衡態が検出される
と、電源制御手段は三相誘導電動機への電源供給を停止
する。In the invention described in claim 2, when the voltages of the three phases of R, S and T are in a balanced state,
The output voltage Vout of the current detector (CT) is almost 0 [V]. However, if an imbalance (including an open phase) occurs for some reason, such as poor power quality, the output voltage Vout of the current detector is The output voltage Vout is not 0 [V] and is determined by vector combination of R, S, and T phases according to the unbalanced state. When the magnitude of the output voltage Vout exceeds a predetermined value, the unbalance detecting means detects that an unbalanced state has occurred. When the unbalanced state is detected, the power supply control means stops the power supply to the three-phase induction motor.
【００１３】請求項３に記載の発明において、三相電圧
のＲ、Ｓ、Ｔの各相の電圧が平衡状態にある場合には、
電流検出器（ＣＴ）の出力電圧Ｖout はほぼ０［Ｖ］で
あるところが、何らかの原因、例えば電力品質の劣悪さ
等の理由により不平衡（欠相も含む）が生じると、電流
検出器は三相の電源線に配置されているので電流検出器
の出力電圧Ｖout は０［Ｖ］にならず、不平衡状態に応
じてＲ、Ｓ、Ｔ各相のベクトル合成によって決まる出力
電圧Ｖout が発生する。この出力電圧Ｖoutの大きさが
所定の値を越えた場合に、不平衡検出手段は不平衡状態
が生じていることを検出する。不平衡態が検出される
と、異常報知手段は異常を報知する。In the invention described in claim 3, when the voltages of the three phases of R, S and T are in a balanced state,
The output voltage Vout of the current detector (CT) is almost 0 [V]. However, if an imbalance (including a phase loss) occurs for some reason, for example, poor power quality, the current detector will trip. The output voltage Vout of the current detector does not become 0 [V] because it is arranged in the phase power supply line, and the output voltage Vout determined by the vector combination of the R, S, and T phases is generated according to the unbalanced state. . When the magnitude of the output voltage Vout exceeds a predetermined value, the unbalance detecting means detects that an unbalanced state has occurred. When the unbalanced state is detected, the abnormality notifying means notifies the abnormality.
【００１４】請求項４に記載の発明において、三相電圧
のＲ、Ｓ、Ｔの各相の電圧が平衡状態にある場合には、
電流検出器（ＣＴ）の出力電圧Ｖout はほぼ０［Ｖ］で
ある。ところが、何らかの原因、例えば電力品質の劣悪
さ等の理由により不平衡（欠相も含む）が生じると、電
流検出器は三相の電源線に配置（すなわち、三相の電源
線に巻回）されているので電流検出器の出力電圧Ｖout
は［Ｖ］にならず、不平衡状態に応じてＲ、Ｓ、Ｔ各相
のベクトル合成によって決まる出力電圧Ｖoutが発生す
る。この出力電圧Ｖout の大きさが所定の値を越えた場
合に、不平衡検出手段は不平衡状態が生じていることを
検出する。不平衡態が検出されると、電源制御手段は三
相誘導電動機への電源供給を停止し、かつ、電源異常を
報知する。このように、三相電源線の電流量を監視する
ことにより、空調調和装置の電源異常を検出し、電源供
給を停止すると共に電源異常を報知する。In the invention described in claim 4, when the voltages of the R, S and T phases of the three-phase voltage are in a balanced state,
The output voltage Vout of the current detector (CT) is almost 0 [V]. However, if an imbalance (including open phase) occurs for some reason, such as poor power quality, the current detector is placed on the three-phase power line (that is, wound around the three-phase power line). Output voltage Vout of the current detector
Does not become [V], and an output voltage Vout determined by vector combination of R, S, and T phases is generated according to the unbalanced state. When the magnitude of the output voltage Vout exceeds a predetermined value, the unbalance detecting means detects that an unbalanced state has occurred. When the unbalanced state is detected, the power supply control means stops the power supply to the three-phase induction motor and notifies the power supply abnormality. In this way, by monitoring the current amount of the three-phase power supply line, the power supply abnormality of the air conditioning conditioner is detected, the power supply is stopped, and the power supply abnormality is reported.
【００１５】[0015]
【実施例】次に、本発明の好適な実施例を図面に基づい
て説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of the present invention will be described with reference to the drawings.
【００１６】図１に、本発明の実施例に係る空調装置の
電源制御装置のブロック回路を示す。FIG. 1 shows a block circuit of a power supply control device for an air conditioner according to an embodiment of the present invention.
【００１７】図１において、三相交流電源の各相Ｒ、
Ｓ、Ｔは、三相の電源線１０、１２、１４を介して三相
誘導電動機１６（コンプレッサのモータＣＭ）に接続さ
れている。三相の電源線１０、１２、１４の途中には、
磁気スイッチ１８、、２０、２２が配置され、磁気スイ
ッチ１８、２０、２２は、磁気スイッチ駆動回路２４に
よりオンオフ制御される。In FIG. 1, each phase R of the three-phase AC power supply,
S and T are connected to a three-phase induction motor 16 (compressor motor CM) via three-phase power lines 10, 12, and 14. In the middle of the three-phase power lines 10, 12, and 14,
The magnetic switches 18, 20, 22 are arranged, and the magnetic switches 18, 20, 22 are on / off controlled by a magnetic switch drive circuit 24.
【００１８】三相の電源線１０、１２、１４の途中には
１つのカレントトランス（変流器：ＣＴともいわれ
る。）電流検出器２６が配置されている。すなわち、電
流検出器２６は中空コイル上を成し、その中空部内に三
相分の電源線１０、１２、１４、がひとまとめにして挿
通されている。電流検出器２６からの出力電圧は、整流
回路２８で整流された後、マイコン３０に供給される。
なお、電流検出器２６と並列に抵抗素子３２が接続され
ている。One current transformer (also called a current transformer: CT) current detector 26 is arranged in the middle of the three-phase power supply lines 10, 12, 14. That is, the current detector 26 is formed on a hollow coil, and the power lines 10, 12, and 14 for three phases are collectively inserted in the hollow portion. The output voltage from the current detector 26 is rectified by the rectifier circuit 28 and then supplied to the microcomputer 30.
A resistance element 32 is connected in parallel with the current detector 26.
【００１９】図１の回路において、正常時には、電源線
１０、１２、１４の各相電流はほぼバランスしているた
め、電流検出器２６の出力電圧はほぼ０（Ｖ）である。
一方、電源線１０、１２、１４の各相電流がアンバラン
スになると、アンバランスの程度に応じた電圧が電流検
出器２６から出力される。マイコン３０は、整流回路２
８で整流された後の電流検出器２６の出力電圧が所定値
を越えた場合には、磁気スイッチ駆動回路２４に停止信
号を供給し、磁気スイッチ１８、２０、２２をオフ作動
させて、電動機１６への電源供給を停止する。更に、マ
イコンはリモコン３４に警報信号を供給し、警報を表示
部３６に例えばコード表示で表示する。In the circuit of FIG. 1, in a normal state, the phase currents of the power supply lines 10, 12, and 14 are almost balanced, so that the output voltage of the current detector 26 is almost 0 (V).
On the other hand, when the phase currents of the power supply lines 10, 12, and 14 become unbalanced, the current detector 26 outputs a voltage according to the degree of unbalance. The microcomputer 30 uses the rectifier circuit 2
When the output voltage of the current detector 26 after being rectified by 8 exceeds a predetermined value, a stop signal is supplied to the magnetic switch drive circuit 24 to turn off the magnetic switches 18, 20, 22 to drive the motor. The power supply to 16 is stopped. Further, the microcomputer supplies an alarm signal to the remote controller 34 and displays the alarm on the display unit 36 by, for example, a code display.
【００２０】次に、図２に、図１の電源制御装置のフロ
ーチャートを示す。Next, FIG. 2 shows a flowchart of the power supply control device of FIG.
【００２１】図２に示すように、制御動作はステップ１
００で始まり、ステップ１０２で磁気スイッチ１８、２
０、２２をオン作動して電動機１６に電源を供給し、ス
テップ１０４でマイコン３０の入力電圧すなわち整流後
の電流検出器２６の出力電圧が許容電圧以下であるか否
かを判断する。ステップ１０４でＹＥＳの場合には、ス
テップ１０６で運転を継続し、ステップ１０４に戻る。
一方、ステップ１０４でＮＯの場合には、ステップ１０
８で磁気スイッチ１８、２０、２２をオフ作動して電動
機１６への電源供給を停止するとともに、ステップ１１
０でリモコン３４の表示部３６に警報表示を行う。As shown in FIG. 2, the control operation is step 1
00, the magnetic switches 18, 2 in step 102
0 and 22 are turned on to supply power to the electric motor 16, and in step 104 it is determined whether the input voltage of the microcomputer 30, that is, the output voltage of the current detector 26 after rectification is equal to or lower than the allowable voltage. If YES in step 104, the operation is continued in step 106, and the process returns to step 104.
On the other hand, if NO in step 104, step 10
At step 8, the magnetic switches 18, 20, 22 are turned off to stop the power supply to the electric motor 16, and step 11
At 0, an alarm is displayed on the display unit 36 of the remote controller 34.
【００２２】なお、図３に図２のフローチャートの変形
例を示す。図２のフローチャートのステップと同一のス
テップには同一の符号を付して説明を省略する。FIG. 3 shows a modification of the flowchart of FIG. The same steps as those in the flowchart of FIG. 2 are designated by the same reference numerals and the description thereof will be omitted.
【００２３】図２のフローチャートでは、ステップ１０
４でＮＯの場合すなわちマイコンの入力電圧が許容電圧
を越える場合にすぐにステップ１０８、１１０に進んだ
が、図３のフローチャートでは、ステップ１０４でＮＯ
の場合にステップ１１２に進む。ステップ１１２では、
マイコンの入力電圧が許容電圧を越えるという異常状態
が所定時間経過したか否かを判定し、ＮＯの場合には、
ステップ１０４に戻るが、ＹＥＳの場合には、ステップ
１０８、１１０に進み、磁気スイッチＯＦＦおよびリモ
コン警報表示がなされる。In the flowchart of FIG. 2, step 10
If NO in step 4, that is, if the input voltage of the microcomputer exceeds the allowable voltage, the process immediately proceeds to steps 108 and 110. However, in the flowchart of FIG.
If so, go to step 112. In step 112,
It is determined whether or not an abnormal state in which the input voltage of the microcomputer exceeds the allowable voltage has passed for a predetermined time. If NO, then
The process returns to step 104, but if the result is YES, the process proceeds to steps 108 and 110, and the magnetic switch is turned off and the remote control alarm is displayed.
【００２４】[0024]
【発明の効果】以上の通り、請求項１に記載の発明によ
れば、簡単な構成により欠相あるいは電源電圧の不平衡
を正確に検出することができ、電源異常に伴う不具合を
防止し得る。As described above, according to the first aspect of the present invention, it is possible to accurately detect the open phase or the imbalance of the power supply voltage with a simple structure, and to prevent the trouble caused by the power supply abnormality. .
【００２５】請求項２に記載の発明によれば、電力品質
が悪い場合、あるいは電源端子の接続不良等に起因する
三相電源の不平衡状態が発生した場合に、速やかに電源
尾供給を停止して過電流による電線の溶断や機器の損傷
を防止することができる。According to the second aspect of the present invention, when the power quality is poor, or when an unbalanced state of the three-phase power source due to a defective connection of the power source terminals or the like occurs, the power supply to the power source is promptly stopped. As a result, it is possible to prevent the electric wire from being melted and the device from being damaged due to overcurrent.
【００２６】請求項３に記載の発明によれば、電力品質
が悪い場合、あるいは電源端子の接続不良等に起因する
３相電源の不平衡状態が発生した場合に、異常の報知が
可能となり、機器の損傷を防止することができる。According to the third aspect of the present invention, it is possible to notify the abnormality when the power quality is poor, or when an unbalanced state of the three-phase power source occurs due to a connection failure of the power source terminals or the like. It is possible to prevent equipment damage.
【００２７】請求項４に記載の発明によれば、電力品質
が悪い場合、あるいは電源端子の接続不良等に起因する
３相電源の不平衡状態が発生した場合に、電源の供給を
停止するとともに異常の報知が可能となり、過電流によ
る電線の溶断や機器の損傷を防止することができる。According to the invention described in claim 4, when the power quality is poor, or when an unbalanced state of the three-phase power supply occurs due to a connection failure of the power supply terminals or the like, the power supply is stopped. It is possible to report an abnormality, and it is possible to prevent the electric wire from being melted and the device from being damaged due to an overcurrent.
【図１】本発明の電源制御装置の実施例を示すブロック
回路図である。FIG. 1 is a block circuit diagram showing an embodiment of a power supply control device of the present invention.
【図２】本発明の電源制御装置の制御動作の概要を示す
フローチャートである。FIG. 2 is a flowchart showing an outline of a control operation of the power supply control device of the present invention.
【図３】本発明の電源制御装置の他の制御動作例を示す
フローチャートである。FIG. 3 is a flowchart showing another control operation example of the power supply control device of the present invention.
１０、１４ 三相の電源線 １６ 三相誘導電動機 １８、２０、２２ 磁気スイッチ ２４ 磁気スイッチ駆動回路 ２６ 電流検出器 ３０ マイコン ３４ リモコン ３６ 表示部 10, 14 Three-phase power line 16 Three-phase induction motor 18, 20, 22 Magnetic switch 24 Magnetic switch drive circuit 26 Current detector 30 Microcomputer 34 Remote control 36 Display section
Claims (4)
三相の電源線を介して供給される三相誘導電動機を有す
る空気調和機の電源制御装置において、 前記三相の電源線に配置された電流検出器と、前記電流
検出器の出力電圧に基づいて前記三相電源電圧の各相間
の不平衡状態を検出する不平衡検出手段と、を含むこと
を特徴とする空気調和装置の電源制御装置。1. A power supply controller for an air conditioner having a three-phase power supply and a three-phase induction motor to which current from the three-phase power supply is supplied via a three-phase power supply line, wherein the three-phase power supply line is provided. And an unbalance detecting means for detecting an unbalanced state between the respective phases of the three-phase power supply voltage based on the output voltage of the current detector. Power controller.
三相の電源線を介して供給される三相誘導電動機を有す
る空気調和機の電源制御装置において、 前記三相の電源線における電源電圧の不平衡状態をする
不平衡検出手段と、前記電源電圧の各相間の不平衡状態
が発生した場合に前記三相誘導電動機への電源供給を停
止する電源制御手段と、を含むことを特徴とする空気調
和装置の電源制御装置。2. A power supply control device for an air conditioner having a three-phase power supply and a three-phase induction motor to which current from the three-phase power supply is supplied via a three-phase power supply line, wherein the three-phase power supply line is provided. And an unbalance detecting means for making an unbalanced state of the power supply voltage, and a power supply control means for stopping the power supply to the three-phase induction motor when an unbalanced state between the phases of the power supply voltage occurs. A power supply control device for an air conditioner.
三相の電源線を介して供給される三相誘導電動機を有す
る空気調和装置の電源制御装置において、 前記三相の電源線における電源電圧の各相間の不平衡状
態をする不平衡検出手段と、前記三相電源電圧の各相間
の不平衡状態が発生した場合に異常を報知する異常報知
手段と、を含むことを特徴とする空気調和装置の電源制
御装置。3. A power supply controller for an air conditioner having a three-phase power supply and a three-phase induction motor to which current from the three-phase power supply is supplied via a three-phase power supply line, wherein the three-phase power supply line is provided. An unbalanced state detecting means for providing an unbalanced state between the respective phases of the power supply voltage, and an abnormality notifying means for notifying an abnormality when the unbalanced state between the respective phases of the three-phase power supply voltage occurs. Power control device for air conditioner.
三相の電源線を介して供給される三相誘導電動機を有す
る空気調和装置の電源制御装置において、 前記三相の電源線における電源電圧の不平衡状態を検出
する不平衡検出手段と、前記三相電源電圧の各相間の不
平衡状態が発生した場合に前記三相誘導電動機への電源
供給を停止する電源制御手段と、前記電源電圧の不平衡
状態が発生した場合に異常を報知する異常報知手段と、
を含むことを特徴とする空気調和装置の電源制御装置。4. A power supply control device for an air conditioner having a three-phase power supply and a three-phase induction motor to which current from the three-phase power supply is supplied via a three-phase power supply line, wherein the three-phase power supply line is provided. An unbalance detecting means for detecting an unbalanced state of the power supply voltage in, and a power supply control means for stopping the power supply to the three-phase induction motor when an unbalanced state between each phase of the three-phase power supply voltage occurs, An abnormality notifying unit for notifying an abnormality when an unbalanced state of the power supply voltage occurs,
A power control device for an air conditioner, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180949A JPH099487A (en) | 1995-06-23 | 1995-06-23 | Controller for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180949A JPH099487A (en) | 1995-06-23 | 1995-06-23 | Controller for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH099487A true JPH099487A (en) | 1997-01-10 |
Family
ID=16092099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7180949A Pending JPH099487A (en) | 1995-06-23 | 1995-06-23 | Controller for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH099487A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003043A (en) * | 2004-06-21 | 2006-01-05 | Aisin Seiki Co Ltd | Outdoor unit of engine drive type air conditioner |
| EP1666807A1 (en) * | 2004-12-03 | 2006-06-07 | Lg Electronics Inc. | Airconditioning generation system capable of solving unbalanced phase and method for the same |
| JP2008070075A (en) * | 2006-09-15 | 2008-03-27 | Matsushita Electric Ind Co Ltd | Air conditioner |
| US7667941B2 (en) * | 2004-10-04 | 2010-02-23 | Daikin Industries, Ltd. | Power supply circuit protecting method and apparatus for the same |
| JP2011188592A (en) * | 2010-03-05 | 2011-09-22 | Mitsubishi Electric Corp | Higher harmonics countermeasure apparatus, refrigeration cycle device having the higher harmonics countermeasure apparatus, and method for detecting connection state of current detector |
-
1995
- 1995-06-23 JP JP7180949A patent/JPH099487A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003043A (en) * | 2004-06-21 | 2006-01-05 | Aisin Seiki Co Ltd | Outdoor unit of engine drive type air conditioner |
| US7667941B2 (en) * | 2004-10-04 | 2010-02-23 | Daikin Industries, Ltd. | Power supply circuit protecting method and apparatus for the same |
| EP1666807A1 (en) * | 2004-12-03 | 2006-06-07 | Lg Electronics Inc. | Airconditioning generation system capable of solving unbalanced phase and method for the same |
| JP2008070075A (en) * | 2006-09-15 | 2008-03-27 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2011188592A (en) * | 2010-03-05 | 2011-09-22 | Mitsubishi Electric Corp | Higher harmonics countermeasure apparatus, refrigeration cycle device having the higher harmonics countermeasure apparatus, and method for detecting connection state of current detector |
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