JPS6335187A - Control device of induction motor - Google Patents
Control device of induction motorInfo
- Publication number
- JPS6335187A JPS6335187A JP61175607A JP17560786A JPS6335187A JP S6335187 A JPS6335187 A JP S6335187A JP 61175607 A JP61175607 A JP 61175607A JP 17560786 A JP17560786 A JP 17560786A JP S6335187 A JPS6335187 A JP S6335187A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- rotation speed
- voltage
- rotational speed
- voltage regulator
- 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
- 230000006698 induction Effects 0.000 title claims description 9
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はインダクションモータの制御装置に係り、特に
モータを小形化するために好適な制御装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for an induction motor, and particularly to a control device suitable for downsizing the motor.
従来のインダクションモータの運転は、運転の安定性を
確保するために、モータの回転数と発生トルクとの関係
は、最大トルクを発生する回転数と発生トルクが無くな
る同期回転数との間に使用回転数が設定されて運転され
ていた。尚、この種の技術として関連するものには例え
ば、山本：電気工学概論、第１章、第１５〜第１６頁、
４北出版、（１９６３）が挙げられる。In conventional induction motor operation, in order to ensure stability of operation, the relationship between motor rotation speed and generated torque is between the rotation speed that generates the maximum torque and the synchronous rotation speed at which the generated torque disappears. The rotation speed was set and it was running. Incidentally, related technologies of this type include, for example, Yamamoto: Introduction to Electrical Engineering, Chapter 1, pp. 15-16;
4Kita Publishing, (1963).
上記従来技術はモータの発生トルクと負荷トルクとが合
致する点が、発生トルクの最大となる回転数を必ず土建
る回転数で運転されることを意味しており、換言すれば
常にモータトルクに余裕をもたせた回転数で運転されて
いることになり、必要以上にモータを大形化しているこ
とになる。In the above conventional technology, the fact that the torque generated by the motor and the load torque match means that the motor is always operated at the rotational speed that maximizes the generated torque.In other words, the motor torque is always This means that the motor is being operated at a rotational speed with some margin, which means that the motor is larger than necessary.
本発明の目的は、負荷機器の運転を、小形のモータによ
り行うことにある。An object of the present invention is to operate a load device using a small motor.
上記目的は、インダクションモータの回転数と発生トル
クとの関係が、同期回転数を下延る一定回転数に最大ト
ルクが存在することに着目して常に最大発生トルクが得
られる回転数を保持するようにモータの交流電圧制御を
行うことにより、達成される。The above purpose is to maintain the rotation speed at which the maximum generated torque is always obtained by focusing on the fact that the relationship between the rotation speed and generated torque of the induction motor is that the maximum torque exists at a constant rotation speed that is below the synchronous rotation speed. This is achieved by controlling the motor's AC voltage in this manner.
即ち、モータあるいは負荷にモータの回転数検出器を設
置し、予め使用モータの設計製作時に判明する最大トル
ク発生回転数と対比せしめて、該最大トルク発生回転数
より低い回転数の場合は、交流電圧を昇圧し、高い回転
数の場合は降圧させるように電圧調整器を回転数検出器
により制御する。これにより、モータは負荷機器に対し
て常に最大トルク発生回転数で運転されるので、小形の
モータで運転することができる。In other words, a motor rotation speed detector is installed on the motor or the load, and the rotation speed is compared with the maximum torque generation rotation speed known at the time of design and manufacturing of the motor to be used.If the rotation speed is lower than the maximum torque generation rotation speed, the AC The voltage regulator is controlled by the rotation speed detector so that the voltage is increased and lowered when the rotation speed is high. As a result, the motor is always operated at the maximum torque generating rotation speed relative to the load equipment, so that it can be operated with a small motor.
以下、本発明の一実施例を第１図〜第３図により説明す
る。第１図において１はインダクションモータであり、
負荷２と連結されており、モータ１と負荷２のいずれか
に回転数検出器５を有している。モータ１への交流電圧
供給は、電圧調整器３を介して電源４より行われ、該電
圧調整器３の出力電圧は回転数検出器５からの発生信号
により制御される。電圧調整器３の構成の一例を第４図
により説明する。３１は１次側電源、３２は２次側電源
であり、巻線３３には複数個のタップ３３ａが設けであ
る。スイッチングブロック３４の開閉は、回転数検出回
路５からの回転数信号３５に応じて必要電圧を出力する
タップ３３ａを閉じるように行われる。これにより、電
圧調整が行われる。具体的にはスイッチングブロック３
４の駆動源をパルスモータ３４ａとし回転数信号３５を
パルス信号とすることにより実現できる。本構成の代り
に電源波形のチョッピング制御によっても、電圧調整は
可能である。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In Fig. 1, 1 is an induction motor,
It is connected to a load 2, and has a rotation speed detector 5 on either the motor 1 or the load 2. AC voltage is supplied to the motor 1 from a power source 4 via a voltage regulator 3, and the output voltage of the voltage regulator 3 is controlled by a signal generated from a rotation speed detector 5. An example of the configuration of the voltage regulator 3 will be explained with reference to FIG. 31 is a primary power source, 32 is a secondary power source, and the winding 33 is provided with a plurality of taps 33a. The switching block 34 is opened and closed in accordance with the rotation speed signal 35 from the rotation speed detection circuit 5 so as to close the tap 33a that outputs the necessary voltage. This performs voltage adjustment. Specifically, switching block 3
This can be realized by using the pulse motor 34a as the drive source of No. 4 and using the rotation speed signal 35 as a pulse signal. Instead of this configuration, voltage adjustment is also possible by chopping control of the power supply waveform.
上述の如き構成のモータ駆動装置に於て、第２図に示す
ように回転数検出器５からの回転数信号を受信して、電
圧調整器３の出力電圧を、第３図に示すように常にモー
タの最大トルク発生点：Ａの回転数Ｎ。を保持せしめる
ように電圧制御させれば、従来Ｂ点で使用していたモー
タより小形のモータで負荷２の運転が可能となる。例え
ば、密閉形冷凍圧縮機を内蔵有する冷蔵庫や冷凍庫など
の冷凍機器においては、圧縮機が小形になることにより
該冷凍機器の外法寸法に対して有効収納内容積を増加で
きる利点がある。In the motor drive device configured as described above, the rotation speed signal from the rotation speed detector 5 is received as shown in FIG. 2, and the output voltage of the voltage regulator 3 is adjusted as shown in FIG. Always the maximum torque generation point of the motor: rotation speed N of A. If the voltage is controlled so as to hold , it becomes possible to operate the load 2 with a motor smaller than the motor conventionally used at point B. For example, in refrigeration equipment such as refrigerators and freezers that have a built-in hermetic refrigeration compressor, there is an advantage that the effective storage volume can be increased relative to the external dimensions of the refrigeration equipment by making the compressor smaller.
本発明によれば、モータの回転数を検出する回転数検出
器の信号を入力して、前記モータの回転数を常に最大ト
ルク発生回転数になるようにモータ駆動用の交流電圧を
制御する電圧調整器を備えたことにより、必要にして充
分に小形のモータで負荷機器の運転をすることができる
。ついては、外法寸法に制約される電気製品やモータの
価格低減の効果がある。According to the present invention, a signal from a rotation speed detector that detects the rotation speed of the motor is input, and the voltage is used to control the AC voltage for driving the motor so that the rotation speed of the motor always reaches the maximum torque generating rotation speed. By providing the regulator, it is possible to operate the load equipment with a sufficiently small motor as required. This has the effect of reducing the prices of electrical products and motors that are restricted by external dimensions.
第１図は本発明の一実施例を具備したインダクションモ
ータの制御装置の構成図、第２図は第１図の制御装置の
制御フローチャート、第３図は本発明の効果を示すモー
タの特性図、第４図は電圧調整器の構成図である。
■・・・インダクションモータ、２・・・負荷、３・・
・電代理人 弁理士 小 川 勝 男 、
第３０
モータ［！！］専弓＼Fig. 1 is a block diagram of a control device for an induction motor equipped with an embodiment of the present invention, Fig. 2 is a control flowchart of the control device of Fig. 1, and Fig. 3 is a characteristic diagram of a motor showing the effects of the present invention. , FIG. 4 is a block diagram of the voltage regulator. ■...Induction motor, 2...Load, 3...
・Electronic Agent Patent Attorney Katsuo Ogawa, 30th Motor [! ! 】Special bow＼
Claims (1)
生する回転数検出器と、前記発生信号を入力して前記モ
ータの回転数が最大トルクを発生する一定回転数になる
ように前記モータの駆動用交流電圧を制御する電圧調整
器とを備えたことを特徴とするインダクションモータの
制御装置。1. A rotation speed detector that detects the rotation speed of the induction motor and generates a signal, and a drive device that inputs the generated signal and drives the motor so that the rotation speed of the motor becomes a constant rotation speed that generates maximum torque. 1. A control device for an induction motor, comprising: a voltage regulator for controlling an AC voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61175607A JPS6335187A (en) | 1986-07-28 | 1986-07-28 | Control device of induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61175607A JPS6335187A (en) | 1986-07-28 | 1986-07-28 | Control device of induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6335187A true JPS6335187A (en) | 1988-02-15 |
Family
ID=15999050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61175607A Pending JPS6335187A (en) | 1986-07-28 | 1986-07-28 | Control device of induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6335187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009544271A (en) * | 2006-07-17 | 2009-12-10 | パワー エレクトロニクス システムズ （２００６） リミテッド | Variable voltage supply system |
-
1986
- 1986-07-28 JP JP61175607A patent/JPS6335187A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009544271A (en) * | 2006-07-17 | 2009-12-10 | パワー エレクトロニクス システムズ （２００６） リミテッド | Variable voltage supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5784267A (en) | Quasi-sine wave and stepped square wave AC to AC converter | |
| US4644242A (en) | Controlling system for a pole change electric motor | |
| JPS6346253B2 (en) | ||
| US4550281A (en) | Synchronous motor control | |
| US4486698A (en) | Method for operating a frequency converter with intermediate DC link for supplying a rotating-field machine | |
| JP2686095B2 (en) | Control circuit for braking a cage motor | |
| JPS6335187A (en) | Control device of induction motor | |
| JPS60257795A (en) | Inverter type portable generator | |
| Miles et al. | Transfer functions of the slip-controlled induction machine | |
| US3414788A (en) | Excitation control system for synchronous motors | |
| JPS59203883A (en) | Operation of variable speed pump water wheel dynamotor | |
| Jarc et al. | A graphical approach to AC drive classification | |
| US20200091852A1 (en) | Circuit arrangement and method for operating a circuit arrangement | |
| SU811425A1 (en) | Thyratron electric motor | |
| JPS6031437Y2 (en) | AC motor control method using thyristor inverter | |
| SU997214A1 (en) | Hysteresis electric motor starting method | |
| JPH0518617A (en) | Controller of refrigerator | |
| JPS58212380A (en) | Control system for ac motor | |
| JPH0158759B2 (en) | ||
| SU1046820A2 (en) | Controlled-velocity electric drive | |
| Sheikholeslam et al. | A Low Cost Single Microcontroller Hybrid Stepper Motor Controller and Drive with Adaptive Ripple Reduction Using Current Feedback | |
| SU951614A1 (en) | Reversive thyristor dc electric drive | |
| JPS6051481A (en) | Driving method of induction motor in valve opening and closing device | |
| SU1365339A1 (en) | Asynchronous thyristor cascade | |
| JPS58222793A (en) | Switching device of voltage supplied to speed control unit |