JPH04193U - - Google Patents

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Publication number
JPH04193U
JPH04193U JP3835090U JP3835090U JPH04193U JP H04193 U JPH04193 U JP H04193U JP 3835090 U JP3835090 U JP 3835090U JP 3835090 U JP3835090 U JP 3835090U JP H04193 U JPH04193 U JP H04193U
Authority
JP
Japan
Prior art keywords
lower limit
supply voltage
limit value
target value
electric compressor
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.)
Granted
Application number
JP3835090U
Other languages
Japanese (ja)
Other versions
JP2542997Y2 (en
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 filed Critical
Priority to JP1990038350U priority Critical patent/JP2542997Y2/en
Publication of JPH04193U publication Critical patent/JPH04193U/ja
Application granted granted Critical
Publication of JP2542997Y2 publication Critical patent/JP2542997Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Control Of Motors That Do Not Use Commutators (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例を示す電動圧縮機の回
転制御装置のブロツク図、第２図は従来例の電動
圧縮機の負荷回転特性図、第３図は本考案の動作
説明のための電動圧縮機の負荷回転特性図、第４
図は電動圧縮機の回転制御装置の動作を示すフロ
ーチヤートである。 １……電動圧縮機、２……回転位相検出器、３
……パルス幅変調回路、５……波形整形回路、６
……電圧指定部、７……マイクロコンピユータ、
８……目標値制御部、１０……第１の下限値設定
部、１１……第２の下限値設定部、１２……比較
部、１３……目標値選定部、Ｍ……ブラシレスモ
ータ、Ｃ……圧縮機。 Fig. 1 is a block diagram of a rotation control device for an electric compressor showing an embodiment of the present invention, Fig. 2 is a load rotation characteristic diagram of a conventional electric compressor, and Fig. 3 is a diagram for explaining the operation of the present invention. Load rotation characteristic diagram of electric compressor, 4th
The figure is a flowchart showing the operation of the rotation control device for an electric compressor. 1...Electric compressor, 2...Rotation phase detector, 3
... Pulse width modulation circuit, 5 ... Waveform shaping circuit, 6
... Voltage specification section, 7 ... Microcomputer,
8... Target value control section, 10... First lower limit value setting section, 11... Second lower limit value setting section, 12... Comparison section, 13... Target value selection section, M... Brushless motor, C...Compressor.

Claims (1)

【実用新案登録請求の範囲】 モータによつて駆動され空調装置の冷媒を圧縮
する電動圧縮機の回転制御装置において、 制御目標値としてモータへの供給電圧を予め指
定する電圧指定部と、 電動圧縮機の回転速度を検出する回転速度検出
手段と、 モータの各供給電圧に対する電動圧縮機の過負
荷安定回転に必要な回転速度の下限値を設定する
下限値設定手段と、 前記回転速度検出手段による検出データと前記
下限値とを比較する比較部と、 前記検出データが当該供給電圧に対応の前記下
限値より小のときは前記制御目標値として前記供
給電圧を順次低下させて前記下限値に移行させ、
前記検出データが当該供給電圧に対応の前記下限
値より大のときは前記制御目標値として前記供給
電圧を順次増加させて前記下限値に移行させる目
標値制御部と、 前記検出データが前記指定された供給電圧に対
応の前記下限値より大のときは前記目標値制御部
に優先して制御目標値を該指定された供給電圧に
選定する目標値選定部とを備えた、 ことを特徴とする電動圧縮機の回転制御装置。[Scope of Claim for Utility Model Registration] A rotation control device for an electric compressor that is driven by a motor and compresses refrigerant in an air conditioner, comprising: a voltage specifying section that specifies in advance a voltage to be supplied to the motor as a control target value; and an electric compressor. a rotation speed detection means for detecting the rotation speed of the motor; a lower limit value setting means for setting a lower limit value of the rotation speed necessary for stable overload rotation of the electric compressor for each supply voltage of the motor; a comparison unit that compares the detected data with the lower limit value; and when the detected data is smaller than the lower limit value corresponding to the supply voltage, the supply voltage is sequentially lowered to the lower limit value as the control target value; let me,
a target value control unit that sequentially increases the supply voltage to shift to the lower limit value as the control target value when the detection data is greater than the lower limit value corresponding to the supply voltage; and a target value selection unit that selects the control target value to the specified supply voltage with priority over the target value control unit when the specified supply voltage is greater than the lower limit value corresponding to the specified supply voltage. Rotation control device for electric compressor.
JP1990038350U 1990-04-10 1990-04-10 Rotary control device for electric compressor Expired - Lifetime JP2542997Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990038350U JP2542997Y2 (en) 1990-04-10 1990-04-10 Rotary control device for electric compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990038350U JP2542997Y2 (en) 1990-04-10 1990-04-10 Rotary control device for electric compressor

Publications (2)

Publication Number Publication Date
JPH04193U true JPH04193U (en) 1992-01-06
JP2542997Y2 JP2542997Y2 (en) 1997-07-30

Family

ID=31546276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990038350U Expired - Lifetime JP2542997Y2 (en) 1990-04-10 1990-04-10 Rotary control device for electric compressor

Country Status (1)

Country Link
JP (1) JP2542997Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219657U (en) * 1975-07-30 1977-02-12

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583596A (en) * 1981-06-26 1983-01-10 Fujitsu Ltd Control circuit for dc brushless motor
JPH01157286A (en) * 1987-12-11 1989-06-20 Mitsubishi Electric Corp Driving device of dc motor
JPH01218382A (en) * 1988-02-24 1989-08-31 Hitachi Ltd Speed controller for motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583596A (en) * 1981-06-26 1983-01-10 Fujitsu Ltd Control circuit for dc brushless motor
JPH01157286A (en) * 1987-12-11 1989-06-20 Mitsubishi Electric Corp Driving device of dc motor
JPH01218382A (en) * 1988-02-24 1989-08-31 Hitachi Ltd Speed controller for motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219657U (en) * 1975-07-30 1977-02-12

Also Published As

Publication number Publication date
JP2542997Y2 (en) 1997-07-30

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term