JPS6389095A - Motor driving gear - Google Patents
Motor driving gearInfo
- Publication number
- JPS6389095A JPS6389095A JP61231160A JP23116086A JPS6389095A JP S6389095 A JPS6389095 A JP S6389095A JP 61231160 A JP61231160 A JP 61231160A JP 23116086 A JP23116086 A JP 23116086A JP S6389095 A JPS6389095 A JP S6389095A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- circuit
- power factor
- conversion circuit
- drive device
- 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
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000009499 grossing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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、ヒステリシス電動機を駆動する電動機駆動装
置に係り、特に、ヒステリシス電動機制御に好適な駆動
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a motor drive device for driving a hysteresis motor, and particularly to a drive device suitable for hysteresis motor control.
従来の装置は、特開昭５９−２１１３９８号に記載のよ
うに、ヒステリシス電動機の運転制御を電動機駆動装置
の出力電圧及び出力電流を検出し、両者の検出量から電
動機の力率を演算して、演算値がある一定値になるよう
に逆変換回路を制御していた。As described in Japanese Patent Application Laid-Open No. 59-211398, a conventional device controls the operation of a hysteresis motor by detecting the output voltage and output current of a motor drive device, and calculating the power factor of the motor from the detected amounts of both. , the inverse conversion circuit was controlled so that the calculated value was a certain constant value.
これは、ヒステリシス電動機が同期、非同期によらず、
その−次電流はほぼ一定となるが、力率が大きく変化す
るという特性を利用したものである。This means that the hysteresis motor is synchronous or asynchronous.
This method takes advantage of the characteristic that the secondary current is approximately constant, but the power factor varies greatly.
しかし、このような力率の変化は電動機の電圧が一定で
あればヒステリシス電動機の有効電力の変化に比例する
。すなわち、電動機への供給有効電力の変化を検出すれ
ば電動機の同期、非同期さらに電動機の力率に比例した
量を検出することができる。However, such a change in power factor is proportional to a change in active power of the hysteresis motor if the voltage of the motor is constant. In other words, by detecting a change in the active power supplied to the motor, it is possible to detect synchronization or non-synchronization of the motor, as well as an amount proportional to the power factor of the motor.
上記従来技術は、電動機の有効電力から電動機の力率に
比例した値を検出する点について配慮されておらず、電
動機の力率演算に電動機駆動装置の出力電圧と出力電流
を検出しているので検出器及び検出回路点数が多くなり
、電動機駆動装置の小型化に問題があった。The above conventional technology does not take into consideration the point of detecting a value proportional to the power factor of the motor from the active power of the motor, and instead detects the output voltage and output current of the motor drive device to calculate the power factor of the motor. The number of detectors and detection circuits increases, creating a problem in miniaturizing the motor drive device.
本発明の目的は、電動機駆動装置の出力電圧値と直流−
直流変換器の制御量から電動機の力率を演算することで
、電流検出回路を省き、電動機駆動装置を小型化するこ
とにある。The object of the present invention is to
The purpose of this invention is to calculate the power factor of the motor from the control amount of the DC converter, thereby eliminating the need for a current detection circuit and downsizing the motor drive device.
上記目的は、電動機の有効電力を電動機駆動装置の出力
電圧値と直流−直流変換器の制御量から電動機の力率に
比例した量を演算することで達成される。The above object is achieved by calculating an amount proportional to the power factor of the motor from the output voltage value of the motor drive device and the control amount of the DC-DC converter to calculate the effective power of the motor.
ヒステリシス電動機は同期、非同期によらずその１次電
流はほぼ一定であるが、力率が大きく変化する特性があ
る。従って、電動機駆動装置の出力電圧を知れば、電動
機の有効電力の変化が電動機の力率変化に比例すること
になる。また、電動機駆動装置の出力を電動機の同期、
非同期によらず一定にするには、直流−直流変換回路の
通流時間を電動機の力率に応じて制御しなければならな
いので、直流−直流変換回路の制御量から電動機の力率
に比例した量を演算することができる。Although the primary current of a hysteresis motor is almost constant regardless of whether it is synchronous or asynchronous, it has a characteristic in which the power factor changes greatly. Therefore, if the output voltage of the motor drive device is known, the change in the active power of the motor will be proportional to the change in the power factor of the motor. In addition, the output of the motor drive device can be synchronized with the motor,
In order to keep the current constant regardless of non-synchronization, it is necessary to control the conduction time of the DC-DC conversion circuit according to the power factor of the motor. Able to calculate quantities.
以下、本発明の一実施例を第１図により説明する。同図
において、１は交流を直流に変換する交流−直流変換回
路、２は直流を任意の直流値に変換する直流−直流変換
回路、３は可変直流を平滑にする平滑回路、４は直流を
任意周波数の交流に変換する直流−交流変換回路、６は
直流−直流変換回路２と直流−交流変換回路４を制御す
る制御回路、７は直流−交流変換回路４の出力電圧を検
出する電圧検出回路、８は直流−直流変換回路への制御
量と電圧検出回路７の出力からヒステリシス電動機５の
力率を演算する演算回路である。An embodiment of the present invention will be described below with reference to FIG. In the figure, 1 is an AC-DC conversion circuit that converts AC to DC, 2 is a DC-DC conversion circuit that converts DC to an arbitrary DC value, 3 is a smoothing circuit that smoothes variable DC, and 4 is a DC converter. 6 is a control circuit that controls the DC-DC converter circuit 2 and the DC-AC converter circuit 4, and 7 is a voltage detector that detects the output voltage of the DC-AC converter circuit 4. A circuit 8 is an arithmetic circuit that calculates the power factor of the hysteresis motor 5 from the control amount to the DC-DC conversion circuit and the output of the voltage detection circuit 7.
電動機駆動装置の交流入力電圧（一般には商用電源）が
ほぼ一定であわば、交流−直流変換回路１の電圧値はほ
ぼ一定となる。従って、直流−直流変換回路２を制御す
ることにより、直流平滑回路３の出力電圧値及び直流−
交流変換回路４の出力電圧値を所望の値にすることがで
きる。If the AC input voltage (generally commercial power supply) of the motor drive device is approximately constant, the voltage value of the AC-DC conversion circuit 1 is approximately constant. Therefore, by controlling the DC-DC conversion circuit 2, the output voltage value of the DC smoothing circuit 3 and the DC-
The output voltage value of the AC conversion circuit 4 can be set to a desired value.
ヒステリシス電動機５の力率変化は、その１次電流が運
転状態によらずほぼ一定であるから直流−交流変換回路
４の出力を一定に制御すれば、電動機５の有効電力の変
化となり、直流−直流変換回路２の制御量も第２図の如
く変化する。同図において（ａ）は電動機の力率が非同
期時のような大きいときを示し、（ｂ）は同期時のよう
な小さいときを示す、この制御量と電圧検出回路７の出
力から演算回路８で力率に比例した量を演算すれば、電
動機の運転状態及び電動機の同期、非同期を判別できる
。Since the primary current of the hysteresis motor 5 is almost constant regardless of the operating state, if the output of the DC-AC conversion circuit 4 is controlled to be constant, the change in the power factor of the motor 5 will result in a change in the active power of the motor 5, resulting in a change in the DC-AC converter circuit 4. The control amount of the DC conversion circuit 2 also changes as shown in FIG. In the figure, (a) shows when the power factor of the motor is large, such as when the motor is out of synchronization, and (b) shows when it is small, like when it is synchronized. By calculating the amount proportional to the power factor, it is possible to determine the operating state of the motor and whether the motor is synchronous or asynchronous.
本発明によれば、電動機駆動装置の出力電圧値を検出す
るだけで電動機の力率を演算可能とし、他の検出回路が
不用となるので駆動装置の小型化が計れる。According to the present invention, the power factor of the motor can be calculated simply by detecting the output voltage value of the motor drive device, and other detection circuits are not required, so the drive device can be downsized.
また、電動機の加速過程においては、演算回路８の出力
を同期状態の値より僅かに大きくなるように、直流−直
流変換回路及び直流−交流変換回路を制御すれば、電動
機を同期に近い状態で加速できるので駆動装置を小容量
化できる。In addition, during the acceleration process of the electric motor, if the DC-DC converter circuit and the DC-AC converter circuit are controlled so that the output of the arithmetic circuit 8 is slightly larger than the value in the synchronous state, the motor can be kept in a state close to synchronization. Since it can be accelerated, the capacity of the drive device can be reduced.
第１図は本発明の一実施例で電動機駆動装置の構成図、
第２図は電動機の力率が変化したときの直流−直流変換
回路の制御量の変化を示した図である。FIG. 1 is a configuration diagram of an electric motor drive device according to an embodiment of the present invention.
FIG. 2 is a diagram showing changes in the control amount of the DC-DC conversion circuit when the power factor of the electric motor changes.
Claims (1)
直流を任意の直流値に変換する直流−直流変換回路、該
可変直流を平滑にする平滑回路、直流を任意周波数の交
流に変換する直流−交流変換回路及び直流−直流変換回
路と直流−交流変換回路を制御する制御回路より成る電
動機駆動装置において、直流−交流変換回路の電圧値を
検出する電圧検出回路と、この電圧検出回路の出力と直
流−直流変換回路への制御量から電動機の力率を演算す
る演算回路を設けたことを特徴とする電動機駆動装置。1. An AC-DC conversion circuit that converts AC input to DC, a DC-DC conversion circuit that converts the DC to any DC value, a smoothing circuit that smoothes the variable DC, and converts DC to AC of any frequency. A motor drive device comprising a DC-AC conversion circuit and a control circuit that controls the DC-DC conversion circuit and the DC-AC conversion circuit includes a voltage detection circuit that detects the voltage value of the DC-AC conversion circuit, and a voltage detection circuit that detects the voltage value of the DC-AC conversion circuit; A motor drive device comprising a calculation circuit that calculates a power factor of a motor from an output and a control amount to a DC-DC conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61231160A JPS6389095A (en) | 1986-10-01 | 1986-10-01 | Motor driving gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61231160A JPS6389095A (en) | 1986-10-01 | 1986-10-01 | Motor driving gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6389095A true JPS6389095A (en) | 1988-04-20 |
Family
ID=16919243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61231160A Pending JPS6389095A (en) | 1986-10-01 | 1986-10-01 | Motor driving gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6389095A (en) |
-
1986
- 1986-10-01 JP JP61231160A patent/JPS6389095A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR870010679A (en) | PWM inverter control system | |
| JPS62104493A (en) | Driving device for ac motor | |
| JPH0612954B2 (en) | Synchronous motor control method | |
| EP0144161B1 (en) | Control system for an ac motor | |
| JPS6389095A (en) | Motor driving gear | |
| US4656401A (en) | Load drive apparatus | |
| JPH02261059A (en) | Dc voltage pulsation correcting power source device | |
| JPS6323586A (en) | Sepeed controller for induction motor | |
| JPH0158759B2 (en) | ||
| JPH02168896A (en) | Method of controlling inverter | |
| JPS6012878B2 (en) | Control method of induction motor | |
| JP2530854Y2 (en) | Motor speed control device | |
| JPS6289493A (en) | Ac motor controller | |
| JP2850098B2 (en) | Inverter parallel operation device | |
| JPS60261378A (en) | Controller for ac motor | |
| JP2590194B2 (en) | AC motor control device | |
| JP2637178B2 (en) | Power converter | |
| JPH06261584A (en) | Control device of ac motor | |
| JPH1075586A (en) | Dead-time compensator for synchronous pwm | |
| JP2582915B2 (en) | Variable speed controller for wound induction machine | |
| JPS62104495A (en) | Control device for motor | |
| JPS63274389A (en) | Speed controller for induction motor | |
| JPS60261396A (en) | Operation controller of hysteresis motor | |
| JPH01114372A (en) | Power-supply device | |
| JPS6130967A (en) | Parallel operation device of inverter |