JP2002027789A - Velocity controller of induction motor - Google Patents
Velocity controller of induction motorInfo
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- JP2002027789A JP2002027789A JP2000203044A JP2000203044A JP2002027789A JP 2002027789 A JP2002027789 A JP 2002027789A JP 2000203044 A JP2000203044 A JP 2000203044A JP 2000203044 A JP2000203044 A JP 2000203044A JP 2002027789 A JP2002027789 A JP 2002027789A
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- Prior art keywords
- induction machine
- current
- inverter
- output
- voltage
- 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.)
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- Control Of Ac Motors In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、誘導機の２次電力
をチョッパと回生インバータを用いて制御するセルビウ
ス方式を用いた誘導機の速度制御装置に係り、特にフリ
ッカを抑制する技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed control device for an induction machine using a Servius method, in which secondary power of the induction machine is controlled using a chopper and a regenerative inverter, and more particularly to a technique for suppressing flicker.
【０００２】[0002]
【従来の技術】２次励磁可能な誘導機と前記誘導機の２
次側に接続された順変換器に、該順変換器からの電力を
交流電源に回生する逆変換器を接続して成る誘導機の速
度制御装置は、セルビウスシステムの名称で知られてい
る。このものにおいては、順変換器（ダイオード整流
器）の特性により、この交流側電流、すなわち電動機２
次巻線電流に歪みが生じ、これにより電動機のすべりに
関係して電動機１次電流に低次の無効電流変動が生じ、
これが原因で、電源系統に接続される蛍光灯にチラツキ
（フリッカ）が生じる場合がある。2. Description of the Related Art An induction machine capable of secondary excitation and two of said induction machines
2. Description of the Related Art A speed control device for an induction machine in which a forward converter connected to a secondary side is connected to an inverter that regenerates power from the forward converter to an AC power supply is known by the name of a Servius system. In this device, due to the characteristics of the forward converter (diode rectifier), this AC side current, that is, the motor 2
Distortion occurs in the secondary winding current, which causes low-order reactive current fluctuations in the motor primary current related to the slip of the motor,
As a result, flicker may occur in the fluorescent lamp connected to the power supply system.
【０００３】[0003]
【発明が解決しようとする課題】本発明の課題は、前記
事情に鑑み、フリッカを抑制できる誘導機の制御装置を
提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a control device for an induction machine capable of suppressing flicker in view of the above circumstances.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するた
め、誘導機の１次電流検出信号より、フリッカ成分を抽
出し、この成分を抑制するように逆変換器の出力電流を
制御する。In order to solve the above problems, a flicker component is extracted from a primary current detection signal of an induction machine, and an output current of an inverter is controlled so as to suppress this component.
【０００５】[0005]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００６】図１は、本発明の一実施形態による誘導機
の速度制御装置であり、フリッカを抑制する機能を持っ
た巻線形誘導電動機の速度制御装置の構成を示す。FIG. 1 shows a configuration of a speed control device for an induction motor according to an embodiment of the present invention, which has a function of suppressing flicker.
【０００７】図１において、１は交流電源系統、２は巻
線形誘導電動機、３は巻線形誘導電動機２の２次電圧を
直流に変換する順変換器(ダイオード整流器)である。４
は速度検出器であり、巻線形誘導電動機２の速度を検出
し、出力する。５は電流検出器であり、順変換器３の出
力電流を検出し、出力する。６は速度制御回路であり、
速度検出器４より出力される信号と電流検出器５より出
力される信号を入力し、この信号に基づいて自己消弧型
素子(ＩＧＢＴ)７をオンオフする制御信号を演算し、出
力する。８は逆流阻止用ダイオードであり、自己消弧型
素子(ＩＧＢＴ)７がオフ状態の時に順変換器３の出力電
流がコンデンサ９に流れる。１０は巻線形誘導電動機２
の２次電力を交流電源系統１に回生するための逆変換器
（IGBTインバータ）、１１は逆変換器用変圧器である。
１２は電流検出器であり、逆変換器１０の出力電流を検
出し、出力する。１３は電圧検出器であり、コンデンサ
９の電圧を検出し、出力する。１４は電流検出器であ
り、巻線形誘導電動機２の１次電流を検出し、出力す
る。１５は逆変換器１０の制御装置であり、電流検出器
１２より出力される信号と電圧検出器１３より出力され
る信号と電流検出器１４より出力される信号が入力さ
れ、この信号に基づいて逆変換器１０の制御信号を出力
する。In FIG. 1, 1 is an AC power supply system, 2 is a wound induction motor, and 3 is a forward converter (diode rectifier) for converting the secondary voltage of the wound induction motor 2 into DC. 4
Is a speed detector, which detects the speed of the wound induction motor 2 and outputs it. Reference numeral 5 denotes a current detector, which detects and outputs an output current of the forward converter 3. 6 is a speed control circuit,
A signal output from the speed detector 4 and a signal output from the current detector 5 are input, and a control signal for turning on / off the self-extinguishing type element (IGBT) 7 is calculated based on these signals and output. Reference numeral 8 denotes a backflow prevention diode, and the output current of the forward converter 3 flows through the capacitor 9 when the self-extinguishing element (IGBT) 7 is off. 10 is a winding type induction motor 2
Is an inverter (IGBT inverter) for regenerating the secondary power to the AC power supply system 1, and 11 is a transformer for the inverter.
Reference numeral 12 denotes a current detector which detects and outputs an output current of the inverter 10. Reference numeral 13 denotes a voltage detector which detects the voltage of the capacitor 9 and outputs it. A current detector 14 detects a primary current of the wound induction motor 2 and outputs the primary current. Reference numeral 15 denotes a control device for the inverter 10, to which a signal output from the current detector 12, a signal output from the voltage detector 13, and a signal output from the current detector 14 are input. A control signal for the inverter 10 is output.
【０００８】尚、順変換器３と自己消弧型素子７の接続
点間にリアクトルを挿入してもよい。Incidentally, a reactor may be inserted between the connection points of the forward converter 3 and the self-extinguishing element 7.
【０００９】次に、本実施形態の動作を説明する。ま
ず、誘導電動機の速度制御部分の動作について説明す
る。速度制御は速度制御回路６にて行われ、速度指令と
速度検出器４より出力される信号が一致するように、順
変換器３の出力電流指令値を演算し、前記電流指令値と
電流検出器５より出力される信号が一致するように、自
己消弧型素子７のオンオフ制御信号を出力する。このよ
うに、直流電流が制御されるので、巻線形誘導電動機２
の２次電流及びトルクは、電流指令に比例するように制
御され、従って回転速度は速度指令に追従して制御され
る。Next, the operation of this embodiment will be described. First, the operation of the speed control portion of the induction motor will be described. The speed control is performed by the speed control circuit 6, and the output current command value of the forward converter 3 is calculated so that the speed command and the signal output from the speed detector 4 coincide with each other. An on / off control signal for the self-extinguishing element 7 is output so that the signals output from the heater 5 match. Since the DC current is controlled in this manner, the wound induction motor 2
Is controlled so as to be proportional to the current command, so that the rotation speed is controlled to follow the speed command.
【００１０】次に、巻線形誘導電動機の２次電力の回生
動作について説明する。速度制御回路６にて自己消弧型
素子７がオンしている間は、順変換器３の直流出力電流
は自己消弧型素子７を通して流れ、このときダイオード
８に流れる電流は零となる。また、逆に自己消弧型素子
７がオフしている間は、直流出力電流はダイオード８を
通して流れる。そして、順変換器３の直流出力電流は、
自己消弧型素子７がオンのとき増加し、オフのとき減少
する。このようにして、出力電流は速度制御回路６の出
力信号に従い制御される。また、ダイオード８を流れる
電流はコンデンサ９を充電し、その電圧を高くする。そ
の結果、逆変換器１０の制御装置１５の動作により、交
流電源側に誘導電動機２の２次電力が回生される。ここ
で、自己消弧型素子７，ダイオード８，コンデンサ９に
より構成される回路は、すべりにより変化する誘導電動
機２の２次電圧を一定電圧の直流に変換する作用があ
り、このとき、逆変換器１０側に伝達される２次電力は
一定電圧の直流電力となる。Next, the regenerative operation of the secondary power of the wound induction motor will be described. While the self-extinguishing element 7 is on in the speed control circuit 6, the DC output current of the forward converter 3 flows through the self-extinguishing element 7, and the current flowing through the diode 8 at this time becomes zero. Conversely, while the self-extinguishing element 7 is off, the DC output current flows through the diode 8. And the DC output current of the forward converter 3 is
It increases when the self-extinguishing element 7 is on and decreases when it is off. Thus, the output current is controlled according to the output signal of the speed control circuit 6. The current flowing through the diode 8 charges the capacitor 9 and increases its voltage. As a result, the secondary power of the induction motor 2 is regenerated on the AC power supply side by the operation of the control device 15 of the inverter 10. Here, the circuit constituted by the self-arc-extinguishing element 7, the diode 8, and the capacitor 9 has an operation of converting the secondary voltage of the induction motor 2 that changes due to slip into a DC of a constant voltage. The secondary power transmitted to the device 10 is DC power of a constant voltage.
【００１１】次に、回生動作を行う逆変換器１０の制御
装置１５の構成と動作について説明する。２０は電圧指
令発生器であり、電圧指令を出力する。２１は電圧制御
器であり、電圧指令発生器２０の出力である電圧指令と
電圧検出器１３より出力される電圧検出値が入力され、
この信号に基づいて直流電流指令信号を演算し、出力す
る。２２は電流制御器であり、該電流指令信号と座標変
換器２３より出力される電流検出信号が入力され、この
信号に基づいて電圧指令信号を出力する。ここで、２３
は交流を電源電圧位相を基準に座標変換する座標変換器
であり、電流検出器１２からの交流電流検出信号が入力
され、座標変換演算を行い、２軸電流信号（有効電流と
無効電流検出信号）を出力する。また、２４は電圧指令
を交流に変換する座標変換器であり、電流制御器２２か
らの電圧指令信号が入力され、座標変換演算を行い、交
流電圧指令信号を出力する。２５はＰＷＭ制御器であ
り、前記交流電圧指令信号とＰＷＭキャリア信号を比較
し、逆変換器１０の自己消弧型素子のオンオフ制御信号
を出力する。ここで、２８は平滑コンデンサ電圧制御器
であり、電圧指令発生器２０，電圧制御器２１，電流制
御器２２，座標変換器２３，座標変換器２４により構成
され、平滑コンデンサ電圧が電圧指令発生器２０からの
電圧指令に一致するような電圧指令信号を出力する。Next, the configuration and operation of the control device 15 of the inverter 10 for performing the regenerative operation will be described. A voltage command generator 20 outputs a voltage command. Reference numeral 21 denotes a voltage controller to which a voltage command output from the voltage command generator 20 and a voltage detection value output from the voltage detector 13 are input.
Based on this signal, a DC current command signal is calculated and output. A current controller 22 receives the current command signal and the current detection signal output from the coordinate converter 23, and outputs a voltage command signal based on this signal. Where 23
Is a coordinate converter for converting an AC coordinate based on the power supply voltage phase. An AC current detection signal from the current detector 12 is input, coordinate conversion is performed, and a biaxial current signal (active current and reactive current detection signal) is input. ) Is output. Reference numeral 24 denotes a coordinate converter for converting a voltage command into an alternating current. The voltage converter 24 receives a voltage command signal from the current controller 22, performs a coordinate conversion operation, and outputs an AC voltage command signal. A PWM controller 25 compares the AC voltage command signal with the PWM carrier signal and outputs an ON / OFF control signal for the self-extinguishing element of the inverter 10. Here, reference numeral 28 denotes a smoothing capacitor voltage controller, which includes a voltage command generator 20, a voltage controller 21, a current controller 22, a coordinate converter 23, and a coordinate converter 24. A voltage command signal that matches the voltage command from the control unit 20 is output.
【００１２】順変換器３の直流出力電流は、ダイオード
８を通して流れ、コンデンサ９を充電し、その電圧を高
くする。電圧指令発生器２０は、コンデンサ９の両端電
圧の指令信号を出力し、コンデンサ９の両端電圧がこれ
より高くなると、電圧制御器からの電流指令が増大し、
これにより逆変換器１０の入力電流が増加するため、コ
ンデンサ９の両端電圧が一定になるように制御される。
この電流制御は、電圧制御ループの内側にある電流制御
ループにより行われる。すなわち、逆変換器１０の出力
電流は、電流検出器１２により検出され、座標変換器２
３を介した後、前記電流指令信号と共に電流制御器２２
に入力され、これにより、逆変換器１０の出力電流は電
流指令値に一致するように制御される。この結果、入力
電流が電流指令に従い制御される。また、前記電圧指令
信号はＰＷＭ制御器２５に入力され、ここでＰＷＭ制御
により逆変換器１０の自己消弧型素子をオンオフ制御す
ることによって逆変換器１０の出力電圧を制御し、逆変
換器１０の出力電流を制御する。このように、コンデン
サ９の電圧が指令電圧より高くなると、コンデンサ電圧
が指令電圧に一致するように逆変換器の出力電圧と出力
電流が制御される。従って、自己消弧型素子７，ダイオ
ード８，コンデンサ９により構成される回路により、直
流に変換された誘導電動機２の２次電力は、逆変換器１
０から電源側に回生される。以上が従来技術の説明であ
る。The DC output current of the forward converter 3 flows through the diode 8 and charges the capacitor 9 to increase its voltage. The voltage command generator 20 outputs a command signal of the voltage across the capacitor 9, and when the voltage across the capacitor 9 becomes higher than this, the current command from the voltage controller increases,
As a result, the input current of the inverter 10 increases, so that the voltage across the capacitor 9 is controlled to be constant.
This current control is performed by a current control loop inside the voltage control loop. That is, the output current of the inverse converter 10 is detected by the current detector 12 and the coordinate converter 2
3 and a current controller 22 together with the current command signal.
, Whereby the output current of the inverter 10 is controlled to match the current command value. As a result, the input current is controlled according to the current command. The voltage command signal is input to a PWM controller 25, which controls the output voltage of the inverter 10 by turning on and off the self-extinguishing element of the inverter 10 by PWM control. 10 control the output current. As described above, when the voltage of the capacitor 9 becomes higher than the command voltage, the output voltage and the output current of the inverter are controlled so that the capacitor voltage matches the command voltage. Therefore, the secondary power of the induction motor 2 converted to DC by the circuit constituted by the self-extinguishing element 7, the diode 8, and the capacitor 9 is supplied to the inverter 1.
It is regenerated from 0 to the power supply side. The above is the description of the prior art.
【００１３】次に、本発明の実施形態について述べる。
誘導電動機２の１次側にフリッカが発生するため、本実
施形態では、前記逆変換器１０に前記フリッカを抑制す
る機能を付加することで、フリッカを抑制できる誘導機
の速度制御装置を構成している。即ち、誘導電動機２の
１次側電流を電流検出器１４で検出し、該検出信号をフ
リッカ検出回路２６に入力する。該検出回路２６は、入
力された信号に含まれるフリッカ成分を抽出し、出力す
る。該検出回路２６より出力されるフリッカ成分の信号
は、フリッカ抑制制御器２７に入力され、該制御器２７
は、入力されたフリッカ成分が零となるような電圧指令
信号を演算し出力する。前記制御器２７より出力される
電圧指令信号は、平滑コンデンサ電圧制御器２８より出
力される電圧指令信号と合成され、ＰＷＭ制御器２５に
入力される。従って、誘導電動機２から電源系統１に流
出するフリッカ成分を相殺するように逆変換器１０の出
力電流が制御され、本実施形態によれば、新たな装置を
追加することなく、フリッカを抑制できる。Next, an embodiment of the present invention will be described.
Since flicker occurs on the primary side of the induction motor 2, in the present embodiment, a speed control device for an induction machine that can suppress flicker is configured by adding a function of suppressing the flicker to the inverter 10. ing. That is, the primary current of the induction motor 2 is detected by the current detector 14, and the detection signal is input to the flicker detection circuit 26. The detection circuit 26 extracts and outputs a flicker component included in the input signal. The signal of the flicker component output from the detection circuit 26 is input to the flicker suppression controller 27,
Calculates and outputs a voltage command signal such that the input flicker component becomes zero. The voltage command signal output from the controller 27 is combined with the voltage command signal output from the smoothing capacitor voltage controller 28 and input to the PWM controller 25. Therefore, the output current of the inverter 10 is controlled so as to cancel the flicker component flowing out of the induction motor 2 to the power supply system 1, and according to the present embodiment, flicker can be suppressed without adding a new device. .
【００１４】図２は、図１のフリッカ検出回路２６の一
実施形態を示したものである。図２において、３０は座
標変換器であり、電流検出器１４より出力される誘導電
動機２の１次側３相交流電流を電源電圧位相を基準に座
標変換し、２軸電流信号を出力する。３１はフィルタ回
路であり、該信号が入力され、直流以外の成分が除去さ
れた信号を出力する。３２は座標変換器であり、フィル
タ回路３１より出力される直流信号を３相交流電流に座
標変換した信号を出力する。ここで、誘導電動機２の１
次側３相交流電流の基本波成分は座標変換器３０によ
り、直流に変換され、フィルタ回路３１を通すことで直
流以外の成分が除去される。そして、座標変換器３２に
より再び交流信号に座標変換することで、座標変換器３
２の出力信号には、誘導電動機２の１次電流の基本波成
分のみが抽出される。さらに、電流検出器１４より出力
される誘導電動機２の１次側３相交流電流から前記基本
波成分を差し引くことで、基本波以外の成分を抽出し、
抽出された信号はフリッカ抑制制御器２７へ入力され
る。尚、フリッカ成分（数Ｈｚ〜３０Ｈｚ程度）のみを
抽出するため、フリッカ成分の周波数より高域の周波数
成分を除去するフィルタ回路を付加してもよい。FIG. 2 shows an embodiment of the flicker detection circuit 26 of FIG. In FIG. 2, reference numeral 30 denotes a coordinate converter, which converts the primary three-phase alternating current of the induction motor 2 output from the current detector 14 based on the power supply voltage phase and outputs a two-axis current signal. Reference numeral 31 denotes a filter circuit which receives the signal and outputs a signal from which components other than direct current have been removed. Reference numeral 32 denotes a coordinate converter, which outputs a signal obtained by converting a DC signal output from the filter circuit 31 into a three-phase AC current. Here, 1 of the induction motor 2
The fundamental wave component of the secondary three-phase AC current is converted to DC by the coordinate converter 30, and the components other than DC are removed by passing through the filter circuit 31. Then, the coordinate conversion is again performed by the coordinate converter 32 into the AC signal, whereby the coordinate converter 3
2, only the fundamental wave component of the primary current of the induction motor 2 is extracted. Furthermore, by subtracting the fundamental wave component from the primary three-phase AC current of the induction motor 2 output from the current detector 14, components other than the fundamental wave are extracted,
The extracted signal is input to the flicker suppression controller 27. In order to extract only the flicker component (about several Hz to 30 Hz), a filter circuit for removing a frequency component higher than the frequency of the flicker component may be added.
【００１５】図３は、図１のフリッカ抑制制御器２７の
一実施形態を示したものである。図３において、３３は
比例制御器であり、フリッカ検出回路２６より出力され
るフリッカ検出信号を零信号から差し引いた偏差信号が
入力され、入力された偏差信号が零となるような電圧指
令信号を出力する。出力された電圧指令信号は、座標変
換器２４からの電圧指令信号と合成され、ＰＷＭ制御器
２５に入力される。ここで、比例制御器３３は、入力さ
れたフリッカ成分が零となるような電圧指令信号を演算
し、逆変換器１０の出力電流を制御する。尚、比例制御
器３３を比例積分制御器などとしてもよく、また、フリ
ッカ検出信号より直接電圧指令を演算するフィードフォ
ワード制御器を付加してもよい。FIG. 3 shows an embodiment of the flicker suppression controller 27 shown in FIG. In FIG. 3, reference numeral 33 denotes a proportional controller, which receives a deviation signal obtained by subtracting a flicker detection signal output from the flicker detection circuit 26 from a zero signal, and generates a voltage command signal that makes the inputted deviation signal zero. Output. The output voltage command signal is combined with the voltage command signal from the coordinate converter 24 and input to the PWM controller 25. Here, the proportional controller 33 calculates a voltage command signal such that the input flicker component becomes zero, and controls the output current of the inverse converter 10. Note that the proportional controller 33 may be a proportional-integral controller or the like, or a feedforward controller that directly calculates a voltage command from a flicker detection signal may be added.
【００１６】尚、本発明を同様の制御装置を備えた巻線
形誘導発電機システムに対して適用しても同様の効果が
得られる。The same effect can be obtained even if the present invention is applied to a wound induction generator system provided with a similar control device.
【００１７】[0017]
【発明の効果】以上説明したように、本発明によれば、
誘導機の１次電流よりフリッカ成分を抽出し、該成分を
抑制するように、逆変換器の出力電流を制御する回路構
成としたので、新たな装置を追加することなく、フリッ
カを抑制できる誘導機の速度制御装置が得られる。As described above, according to the present invention,
Since a flicker component is extracted from the primary current of the induction machine and the output current of the inverter is controlled so as to suppress the component, the flicker can be suppressed without adding a new device. The speed control of the machine is obtained.
【図１】本発明の一実施形態を示す誘導機の速度制御装
置の構成図。FIG. 1 is a configuration diagram of a speed control device for an induction machine according to an embodiment of the present invention.
【図２】本発明のフリッカ検出回路の一実施形態を示す
構成図。FIG. 2 is a configuration diagram showing one embodiment of a flicker detection circuit of the present invention.
【図３】本発明のフリッカ抑制制御器の一実施形態を示
す構成図。FIG. 3 is a configuration diagram showing an embodiment of a flicker suppression controller according to the present invention.
１…交流電源系統、２…巻線形誘導電動機、３…順変換
器、４…速度検出器、５…電流検出器、６…速度制御回
路、７…自己消弧型素子、８…ダイオード、９…コンデ
ンサ、１０…逆変換器、１１…逆変換器用変圧器、１
２，１４…電流検出器、１３…電圧検出器、１５…逆変
換器の制御装置、２０…電圧指令発生器、２１…電圧制
御器、２２…電流制御器、２３，２４…座標変換器、２
５…ＰＷＭ制御器、２６…フリッカ検出回路、２７…フ
リッカ抑制制御器、２８…平滑コンデンサ電圧制御器。REFERENCE SIGNS LIST 1 AC power supply system 2 Winding induction motor 3 Forward converter 4 Speed detector 5 Current detector 6 Speed control circuit 7 Self-extinguishing element 8 Diode 9 ... Capacitor, 10 ... Inverter, 11 ... Inverter transformer, 1
2, 14: current detector, 13: voltage detector, 15: control device of inverter, 20: voltage command generator, 21: voltage controller, 22: current controller, 23, 24: coordinate converter, 2
5 PWM controller, 26 flicker detection circuit, 27 flicker suppression controller, 28 smoothing capacitor voltage controller.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 根本 治郎 茨城県日立市大みか町五丁目２番１号 株 式会社日立製作所大みか事業所内 (72)発明者 大尾 典雄 茨城県日立市大みか町五丁目２番１号 株 式会社日立製作所大みか事業所内 Ｆターム(参考） 5H575 BB05 BB10 DD03 DD05 GG04 GG05 HA05 HA08 HA16 HB07 HB20 JJ11 JJ26 KK08 LL22 LL24 LL50 MM15 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Jiro Nemoto 5-2-1 Omikacho, Hitachi City, Ibaraki Prefecture Inside the Omika Works, Hitachi, Ltd. No. 2 F-term in Hitachi Ltd. Omika Works (reference) 5H575 BB05 BB10 DD03 DD05 GG04 GG05 HA05 HA08 HA16 HB07 HB20 JJ11 JJ26 KK08 LL22 LL24 LL50 MM15
Claims (4)
に接続し、該順変換器からの誘導機の２次電力を逆変換
器により交流電源に回生しつつ速度制御を行う誘導機の
制御装置において、 誘導機の１次電流検出信号より基本波以外の成分を抽出
し、前記基本波以外の成分を相殺するように、前記逆変
換器の出力電流を制御するようにしたことを特徴とする
誘導機の速度制御装置。1. A secondary side of an induction machine capable of secondary excitation is connected to a forward converter, and secondary power of the induction machine from the forward converter is regenerated to an AC power supply by an inverter to control speed. In the induction machine control device, the component other than the fundamental wave is extracted from the primary current detection signal of the induction machine, and the output current of the inverter is controlled so as to cancel the component other than the fundamental wave. A speed control device for an induction machine, characterized in that:
側に接続された順変換器の直流出力端子間に直接または
リアクトルを介して自己消弧型素子を接続し、前記自己
消弧型素子と並列にダイオードとコンデンサの直列回路
を接続し、さらに前記コンデンサの端子間に逆変換器を
接続し、誘導機の２次電力を交流電源に回生しつつ速度
制御を行う誘導機の制御装置において、 誘導機の１次電流検出信号より基本波以外の成分を抽出
し、前記基本波以外の成分を相殺するように、前記逆変
換器の出力電流を制御するようにしたことを特徴とする
誘導機の速度制御装置。2. A self-extinguishing element is connected directly or via a reactor between an induction machine capable of secondary excitation and a DC output terminal of a forward converter connected to a secondary side of the induction machine. Induction machine that connects a series circuit of a diode and a capacitor in parallel with the arc-extinguishing element, and further connects an inverter between terminals of the capacitor, and controls speed while regenerating secondary power of the induction machine to an AC power supply. In the control device, the component other than the fundamental wave is extracted from the primary current detection signal of the induction machine, and the output current of the inverter is controlled so as to cancel the component other than the fundamental wave. Characteristic speed control device of induction machine.
の１次電流検出信号より抽出する基本波以外の成分を、
１次電流に含まれる数Ｈｚから３０Ｈｚの周波数成分と
することを特徴とする誘導機の速度制御装置。3. A component other than a fundamental wave extracted from a primary current detection signal of an induction machine according to claim 1 or 2,
A speed control device for an induction machine, wherein a frequency component of several Hz to 30 Hz included in a primary current is used.
いずれか１項において、逆変換器の平滑コンデンサ電圧
制御器より出力される電圧指令信号に、誘導機の１次電
流に含まれる基本波以外の成分を相殺するような電圧指
令信号を合成して、前記逆変換器の出力電流を制御する
ようにしたことを特徴とする誘導機の速度制御装置。4. The voltage command signal output from the smoothing capacitor voltage controller of the inverter in any one of the first, second and third aspects is included in the primary current of the induction machine. A speed control device for an induction machine, wherein a voltage command signal that cancels components other than a fundamental wave is synthesized to control an output current of the inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000203044A JP3772649B2 (en) | 2000-06-30 | 2000-06-30 | Induction machine speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000203044A JP3772649B2 (en) | 2000-06-30 | 2000-06-30 | Induction machine speed control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002027789A true JP2002027789A (en) | 2002-01-25 |
| JP3772649B2 JP3772649B2 (en) | 2006-05-10 |
Family
ID=18700492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000203044A Expired - Fee Related JP3772649B2 (en) | 2000-06-30 | 2000-06-30 | Induction machine speed control device |
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| Country | Link |
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| JP (1) | JP3772649B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006136121A (en) * | 2004-11-05 | 2006-05-25 | Toshiba Mitsubishi-Electric Industrial System Corp | Controller for wound rotor induction motor |
| WO2011105676A1 (en) * | 2010-02-24 | 2011-09-01 | 주식회사 자이벡 | Apparatus and method for controlling the speed of a wound-rotor induction motor |
-
2000
- 2000-06-30 JP JP2000203044A patent/JP3772649B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006136121A (en) * | 2004-11-05 | 2006-05-25 | Toshiba Mitsubishi-Electric Industrial System Corp | Controller for wound rotor induction motor |
| JP4549159B2 (en) * | 2004-11-05 | 2010-09-22 | 東芝三菱電機産業システム株式会社 | Winding induction motor controller |
| WO2011105676A1 (en) * | 2010-02-24 | 2011-09-01 | 주식회사 자이벡 | Apparatus and method for controlling the speed of a wound-rotor induction motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3772649B2 (en) | 2006-05-10 |
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