JPS583583A - Speed controller for single-phase induction motor - Google Patents
Speed controller for single-phase induction motorInfo
- Publication number
- JPS583583A JPS583583A JP9822881A JP9822881A JPS583583A JP S583583 A JPS583583 A JP S583583A JP 9822881 A JP9822881 A JP 9822881A JP 9822881 A JP9822881 A JP 9822881A JP S583583 A JPS583583 A JP S583583A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- voltage
- motor
- speed
- controlling
- 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 abstract description 12
- 239000003990 capacitor Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は誘導機の速度制御に関するものである第１図に
従来の制御装置を示す。ボリー−ム６はスイッチ３と連
動罠なっており、スイッチ３が入った時ポリーーム６の
抵抗値は最大になるものとする。この図において、ポリ
、−ムロを変化させてトランジスタ５のベース電流を変
えてやれば、コレクターエミッタ間電圧Ｖｃｌ、すなわ
ち電圧ｖ８ を変化させることができる。つまり、ポリ
ーーム６で電圧ＶＲを制御することができることになる
。また電圧ｖ１は電圧■ｃｏＮを全波整流したものであ
るから、電圧ｖＩＬを制御するということは電圧■。Ｏ
Ｎすなわち誘導機の印加電圧−を制御することになり速
度制御が可能となる。また、図における固定抵抗器７．
８は動作をより安定にするためのものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to speed control of an induction machine. A conventional control device is shown in FIG. The volume 6 is a trap linked to the switch 3, and when the switch 3 is turned on, the resistance value of the volume 6 is assumed to be maximum. In this figure, if the base current of the transistor 5 is changed by changing the poly and -mulo values, the collector-emitter voltage Vcl, that is, the voltage v8 can be changed. In other words, the voltage VR can be controlled by the polyme 6. Also, since the voltage v1 is a full-wave rectification of the voltage ■coN, controlling the voltage vIL means the voltage ■coN. O
By controlling N, that is, the applied voltage of the induction machine, it becomes possible to control the speed. Also, fixed resistor 7 in the figure.
8 is for making the operation more stable.
上記した従来のものにおいては、スイッチ３を入れたと
きは誘導機２の印加電圧は最小であり、その電圧で誘導
機２は始動しなくてはいけない。In the conventional system described above, when the switch 3 is turned on, the voltage applied to the induction machine 2 is the minimum, and the induction machine 2 must be started at that voltage.
そのために、その時の電圧はある大きさ以上を必要とす
る。つまり始動のために印加最小電圧、言い換えれば最
低速度が決定されるという欠点を有している。Therefore, the voltage at that time needs to be higher than a certain level. That is, it has the disadvantage that the minimum applied voltage, in other words, the minimum speed, is determined for starting.
本発明では始動のだめの始動回路を設けることで、前記
欠点を改良し最小印加電圧、最低速度をさらに低くする
ことを目的とするものである。The present invention aims to improve the above-mentioned drawbacks and further lower the minimum applied voltage and minimum speed by providing a starting circuit for starting.
本発明は上記の目的を達成するために、始動時に回路定
数によって決まるある時間のみトランジスタ５０ペース
電流を増加させ誘導機２に大きな例により詳細に説明す
る。In order to achieve the above object, the present invention will be explained in detail using a large example of the induction machine 2, in which the pace current of the transistor 50 is increased only for a certain time determined by the circuit constants at the time of starting.
９はシーナーダイオードで固定抵抗器１１を介して接続
されており、１０はダイオードでトランジスタ１３のペ
ース側に接続されている。１２はコンデンサである。而
して、コンデンサ１２に充電させる間、トランジスタ８
のペースに電流が流れコレクタ電流が流れる。この電流
でトランジスタ５のペース電流が増加し誘導機２を始動
させるのである。コンデンサ１２の電圧がシーナーダイ
オード９で決められた値まで充電後はトランジスタ１３
はオフし始動回路は切り離される。第３図にこの様子を
示す。ｔ＝Ｑでスイッチを入れ、ｔ＝ｔＩで始動回路は
切り一離されてしまう。本発明では回路定数を変えるこ
とにより、この時間の長さ、および始動時の電圧の大き
さを自由に設定−することが可能である。また、始動回
路でのダイオード１０はコンデンサ１２の放電用である
。Reference numeral 9 is a sheener diode connected through a fixed resistor 11, and reference numeral 10 is a diode connected to the pace side of the transistor 13. 12 is a capacitor. Thus, while charging the capacitor 12, the transistor 8
A current flows at the pace of the collector current. This current increases the pace current of the transistor 5 and starts the induction machine 2. After the voltage of the capacitor 12 is charged to the value determined by the Seener diode 9, the transistor 13
is turned off and the starting circuit is disconnected. Figure 3 shows this situation. The switch is turned on at t=Q, and the starting circuit is disconnected at t=tI. In the present invention, by changing the circuit constants, it is possible to freely set the length of this time and the magnitude of the voltage at the time of starting. Further, the diode 10 in the starting circuit is for discharging the capacitor 12.
本発明は上記の如き構成にしたから、最小印加電圧・最
低速度をさらに低くすることができる。Since the present invention is configured as described above, the minimum applied voltage and minimum speed can be further lowered.
第１図は従来機の回路図、第２図は本発明の回路図、第
３図は動作後の状態図を表わす。FIG. 1 is a circuit diagram of a conventional device, FIG. 2 is a circuit diagram of the present invention, and FIG. 3 is a state diagram after operation.
Claims (1)
）を直列に接続し、トランジスタのベース電流を変える
ことにより誘導機の印加電圧を変えて、速度を制御する
ものにおいて、始動時の適宜時間だけトランジスタのベ
ース電流を増加させるようにした単相誘導型！ＩＩｈ機
の速度制御装置。A transistor and a single-phase induction motor (hereinafter referred to as an induction motor) are connected in series, and the speed is controlled by changing the voltage applied to the induction motor by changing the base current of the transistor. Single-phase induction type that increases the base current of the transistor! IIh aircraft speed control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9822881A JPS583583A (en) | 1981-06-26 | 1981-06-26 | Speed controller for single-phase induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9822881A JPS583583A (en) | 1981-06-26 | 1981-06-26 | Speed controller for single-phase induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS583583A true JPS583583A (en) | 1983-01-10 |
Family
ID=14214095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9822881A Pending JPS583583A (en) | 1981-06-26 | 1981-06-26 | Speed controller for single-phase induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS583583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512810A (en) * | 1994-05-27 | 1996-04-30 | Eaton Corporation | Variable speed control for a hand-held electric power tool |
-
1981
- 1981-06-26 JP JP9822881A patent/JPS583583A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512810A (en) * | 1994-05-27 | 1996-04-30 | Eaton Corporation | Variable speed control for a hand-held electric power tool |
| US5714861A (en) * | 1994-05-27 | 1998-02-03 | Eaton Corporation | Variable speed control for a hand-held electric power tool |
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