JP2003033067A - Method of switching winding of motor, and motor driver - Google Patents
Method of switching winding of motor, and motor driverInfo
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- JP2003033067A JP2003033067A JP2001219879A JP2001219879A JP2003033067A JP 2003033067 A JP2003033067 A JP 2003033067A JP 2001219879 A JP2001219879 A JP 2001219879A JP 2001219879 A JP2001219879 A JP 2001219879A JP 2003033067 A JP2003033067 A JP 2003033067A
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- speed
- winding
- command
- electric motor
- switching
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は低速用巻線と高速用
巻線を有する電動機の巻線切替方法および電動機駆動装
置に関する。ここで、低速用巻線とは、電動機巻線の巻
き数を多くし、電動機誘起電圧が大きくなるようにした
巻線であり、高速用巻線とは、巻き数を少なくし、電動
機誘起電圧が小さくなるようにした巻線のことである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding switching method for an electric motor having a low speed winding and a high speed winding, and an electric motor drive device. Here, the low-speed winding is a winding in which the number of turns of the motor winding is increased to increase the motor induced voltage, and the high-speed winding is decreased in the number of turns of the motor induced voltage. Is a winding that is made smaller.
【０００２】[0002]
【従来の技術】工作機械の主軸駆動などの用途には、す
べり周波数型ベクトル制御によって駆動される誘導電動
機が多く用いられている。また、特に広域定出力が必要
な工作機の主軸用途には、マグネットスイッチ等により
電動機の結線をΔ結線またはＹ結線に切替え使用する巻
線切替用誘導電動機がしばしば使用される。前記Δ結線
およびＹ結線は、巻線切替指令により巻線切替を行な
う。従来の巻線切替処理のフローを図４に、タイムチャ
ートを図５に示す。2. Description of the Related Art Induction motors driven by slip frequency vector control are often used for applications such as driving the spindle of machine tools. Further, particularly for a spindle application of a machine tool that requires a wide range of constant output, a winding switching induction motor that uses a magnet switch or the like to switch the connection of the motor to a Δ connection or a Y connection is often used. For the Δ connection and the Y connection, winding switching is performed by a winding switching command. The flow of the conventional winding switching process is shown in FIG. 4 and the time chart is shown in FIG.
【０００３】上位コントローラは、速度指令に５０００
ｒ／ｍｍを設定し（ステップ２０）、低速巻線指令（Ｃ
ＨＷ＝“０”）を出力する（ステップ２１）。次に、速
度一致信号ＮＤＥＴが“１”かどうか、すなわち電動機
速度が巻線切替速度と一致するかどうか判定する（ステ
ップ２２）。最初は低速領域であり、速度一致信号ＮＤ
ＥＴは“０”なので、電動機駆動装置は電動機を加速す
る（ステップ２３）。そして電動機速度が巻線切替速度
に一致すると、速度一致信号ＮＤＥＴ（＝“１”）を出
力する（ステップ２４，２５）。電動機駆動装置は遅れ
時間Ｔｄの後、上位コントローラは高速巻線指令（ＣＨ
Ｗ＝“１”）を出力する（ステップ２６）。次に、ＣＨ
ＷＥ＝“１”かどうか、すなわち巻線切替処理が完了し
たかどうか判定する（ステップ２７）。巻線切替処理は
完了していないので、電動機駆動装置は高速巻線切替指
令に従って電磁接触器などを用いて巻線切替処理を行い
（ステップ２８）、切替を完了すると、ＣＨＷＥ＝
“１”にする（ステップ２９）。この後高速用巻線にて
電動機の加速を始める（ステップ３０）。なお、図４中
破線内は電動機駆動装置で行なわれる処理である。The host controller sends 5000 to the speed command.
r / mm is set (step 20) and the low speed winding command (C
HW = "0") is output (step 21). Next, it is determined whether the speed matching signal NDET is "1", that is, whether the motor speed matches the winding switching speed (step 22). Initially in the low speed region, the speed matching signal ND
Since ET is "0", the motor drive device accelerates the motor (step 23). When the motor speed matches the winding switching speed, the speed matching signal NDET (= "1") is output (steps 24 and 25). After the delay time Td in the motor drive device, the host controller sends the high-speed winding command (CH
W = “1”) is output (step 26). Then CH
It is determined whether WE = "1", that is, whether the winding switching process is completed (step 27). Since the winding switching process has not been completed, the motor drive device performs the winding switching process using an electromagnetic contactor or the like in accordance with the high-speed winding switching command (step 28), and when the switching is completed, CHWE =
Set to "1" (step 29). After this, the acceleration of the electric motor is started in the high speed winding (step 30). Note that the processing within the broken line in FIG. 4 is performed by the motor drive device.
【０００４】しかし近年の高加速度化などの要求によ
り、この方法では上位コントローラが速度一致信号ＮＤ
ＥＴ（＝“１”）を確認して高速巻線切替指令を出すま
での遅れ時間Ｔｄの間に低速用巻線で回せる許容値をΔ
Ｎ超える回転数まで電動機が加速し、同期電動機などの
場合は電動機の誘起電圧が上がり電動機駆動装置を破壊
するなどの問題が発生してきた。この問題に対しては本
出願人の特開平１０−２４８２８７は、巻線毎に保護レ
ベルを設定し巻線の許容値を超えた速度に達した時は電
動機を停止するなどして対応している。However, due to recent demands for higher acceleration and the like, in this method, the host controller causes the speed matching signal ND
The allowable value that can be turned by the low speed winding during the delay time Td from confirming ET (= “1”) to issuing the high speed winding switching command is Δ
The electric motor is accelerated up to the number of revolutions exceeding N, and in the case of a synchronous electric motor or the like, the induced voltage of the electric motor is increased and the electric motor drive device is broken down. To solve this problem, Japanese Patent Laid-Open No. 10-248287 of the present applicant addresses the problem by setting a protection level for each winding and stopping the motor when the speed exceeds the allowable value of the winding. There is.
【０００５】[0005]
【発明が解決しようとする課題】特開平１０−２４８２
８７号に開示された方法では電動機駆動装置の保護は可
能となったが、電動機の加速度や上位コントローラの処
理遅れ時間Ｔｄによっては保護レベルに到達し、電動機
が停止すると言う不具合が発生した。[Patent Document 1] Japanese Patent Laid-Open No. 10-2482
Although the method disclosed in No. 87 has made it possible to protect the electric motor drive device, there is a problem in that the electric motor stops due to reaching the protection level depending on the acceleration of the electric motor and the processing delay time Td of the host controller.
【０００６】本発明の目的は、上位コントローラの処理
時間などに影響されずに、低速用巻線の許容値を超える
速度になることなくスムーズな巻線切替動作が可能な、
電動機の巻線切替方法および電動機駆動装置を提供する
ことにある。An object of the present invention is to enable a smooth winding switching operation without being affected by the processing time of the host controller and the like, without increasing the speed exceeding the allowable value of the low speed winding.
An object is to provide a winding switching method of an electric motor and an electric motor drive device.
【０００７】[0007]
【課題を解決するための手段】本発明の、電動機の巻線
切替方法は、低速用巻線が選択されている間は速度指令
を、該低速用巻線で運転可能な速度制限値に制限するも
のである。According to the winding switching method of an electric motor of the present invention, while a low speed winding is selected, the speed command is limited to a speed limit value at which the low speed winding can operate. To do.
【０００８】また、本発明の電動機駆動装置は、電動機
の回転速度を検出する速度検出部と、前記回転速度が巻
線切替速度に一致すると速度一致信号を出力する速度一
致判定回路と、入力された速度指令を制限し、速度制御
器に出力する速度指令制限回路と、上位コントローラか
らの速度指令を入力し、また前記速度一致信号を前記上
位コントローラに出力し、前記上位コントローラが出力
した巻線切替指令を入力するＩ／Ｆ回路と、前記Ｉ／Ｆ
回路が入力した速度指令を、前記巻線切替指令が低速用
巻線を選択する指令であった場合、前記速度指令制限回
路に出力し、前記巻線切替指令が高速用巻線を選択する
指令であった場合、前記速度制御器に出力する速度指令
切替スイッチを有する。Further, the motor drive device of the present invention is inputted with a speed detection section for detecting the rotation speed of the motor, and a speed coincidence determination circuit for outputting a speed coincidence signal when the rotation speed coincides with the winding switching speed. The speed command limiting circuit that limits the speed command and outputs the speed command to the speed controller and the speed command from the host controller are input, and the speed matching signal is output to the host controller, and the winding output by the host controller An I / F circuit for inputting a switching command, and the I / F
When the winding switching command is a command for selecting the low speed winding, the speed command input by the circuit is output to the speed command limiting circuit, and the winding switching command selects the high speed winding. If it is, it has a speed command changeover switch for outputting to the speed controller.
【０００９】本発明の他の電動機駆動装置は、電動機の
回転速度を検出する速度検出部と、前記回転速度が巻線
切替速度に一致すると速度一致信号を出力する速度一致
判定回路と、上位コントローラからの速度指令を入力
し、また前記速度一致信号を前記上位コントローラに出
力し、前記上位コントローラが出力した巻線切替指令を
入力するＩ／Ｆ回路と、前記Ｉ／Ｆ回路に入力された速
度指令を入力し、前記巻線切替指令が低速用巻線を選択
する指令であった場合、前記速度指令を制限して速度制
御器に出力し、前記巻線切替指令が高速用巻線を選択す
る指令であった場合、前記速度指令をそのまま前記速度
制御器に出力する速度指令制限回路を有する。Another motor drive device of the present invention is a speed detection unit for detecting the rotation speed of the motor, a speed matching determination circuit for outputting a speed matching signal when the rotation speed matches the winding switching speed, and a host controller. I / F circuit for inputting the speed command from the host controller, outputting the speed matching signal to the host controller, and inputting the winding switching command output by the host controller, and the speed input to the I / F circuit. When a command is input and the winding switching command is a command to select the low speed winding, the speed command is limited and output to the speed controller, and the winding switching command selects the high speed winding. If it is a command to do so, it has a speed command limiting circuit that outputs the speed command as it is to the speed controller.
【００１０】[0010]
【発明の実施の形態】次に、本発明の実施の形態につい
て図面を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.
【００１１】図１は本発明の第１の実施形態の電動機駆
動装置のブロック図である。FIG. 1 is a block diagram of an electric motor drive device according to a first embodiment of the present invention.
【００１２】電動機駆動装置４は、上位コントローラ５
からの指令に基き、低速用巻線と高速用巻線を有する電
動機１を巻線切替器３を介して駆動するもので、速度検
出部１１と速度一致判定回路１２とＩ／Ｆ（インタフェ
ース）回路１３と速度指令切替スイッチ１４と速度指令
制限回路１５と速度制御器１６とパワー変換部１７を含
んでいる。The electric motor drive device 4 includes a host controller 5
The motor 1 having the low-speed winding and the high-speed winding is driven through the winding switching device 3 based on the command from the speed detector 11, the speed coincidence determination circuit 12, and the I / F (interface). It includes a circuit 13, a speed command changeover switch 14, a speed command limiting circuit 15, a speed controller 16 and a power converter 17.
【００１３】速度検出部１１は電動機１に接続されたＰ
Ｇ（パルスジェネレータ）２の出力から電動機１の回転
速度を計算する。速度一致判定回路１２は速度検出部１
１から出力された回転速度を予め設定されている巻線切
替速度と比較し、一致すると速度一致信号ＮＤＥＴ（＝
“１”）を出力する。Ｉ／Ｆ回路１３は速度一致信号Ｎ
ＤＥＴを上位コントローラ５に出力し、また上位コント
ローラ５から速度指令と巻線切替指令ＣＨＷを入力し、
速度指令を速度指令切替スイッチ１４に出力し、巻線切
替指令ＣＨＷを速度指令切替スイッチ１４と巻線切替器
３に出力する。巻線切替指令ＣＨＷは、低速用巻線を選
択する指令の場合“０”、高速用巻線を選択する指令の
場合“１”である。速度指令切替スイッチ１４は巻線切
替指令ＣＨＷが“０”の場合、速度指令を速度指令制限
回路１５に出力し、巻線切替指令ＣＨＷが“１”の場
合、速度指令を速度制御器１６に出力する。速度指令制
限回路１５は巻線切替指令ＣＨＷが“０”、つまり低速
用巻線選択指令のときの速度指令を、低速用巻線で回す
ことのできる回転数である、＋ＮＬＩＭＩＴ（正側の回
転の場合）、−ＮＬＩＭＩＴ（負側の回転の場合）に制
限する。速度制御器１６は速度指令切替スイッチ１４ま
たは速度指令制限回路１５から出力された速度指令と、
速度検出部１１で計算された速度検出値を比較し、必要
なパワーを計算する。パワー変換部１７は速度制御器１
６で計算されたパワーを発生し、巻線切替器３を介して
電動機１を駆動する。The speed detector 11 is connected to the electric motor 1 by a P
The rotation speed of the electric motor 1 is calculated from the output of G (pulse generator) 2. The speed matching determination circuit 12 is the speed detection unit 1.
1 is compared with the preset winding switching speed, and if they match, the speed matching signal NDET (=
"1") is output. The I / F circuit 13 uses the speed matching signal N
DET is output to the host controller 5, and a speed command and a winding switching command CHW are input from the host controller 5,
The speed command is output to the speed command changeover switch 14, and the winding changeover command CHW is output to the speed command changeover switch 14 and the winding changeover device 3. The winding switching command CHW is "0" for a command for selecting a low speed winding and "1" for a command for selecting a high speed winding. The speed command changeover switch 14 outputs the speed command to the speed command limiting circuit 15 when the winding change command CHW is "0", and outputs the speed command to the speed controller 16 when the winding change command CHW is "1". Output. The speed command limiting circuit 15 is a rotation speed at which the speed command when the winding switching command CHW is “0”, that is, the low speed winding selection command can be rotated by the low speed winding, + NLIMIT (the positive rotation In the case of) and -NLLIMIT (in the case of rotation on the negative side). The speed controller 16 uses the speed command output from the speed command changeover switch 14 or the speed command limiting circuit 15,
The speed detection values calculated by the speed detection unit 11 are compared to calculate the required power. The power converter 17 is the speed controller 1
The power calculated in 6 is generated, and the electric motor 1 is driven via the winding switching device 3.
【００１４】次に、本実施形態の動作例を図２のタイミ
ングチャートを使って説明する。Next, an operation example of this embodiment will be described with reference to the timing chart of FIG.
【００１５】本例は停止状態で５０００ｒｐｍの速度指
令を与え、予め設定された巻線切替速度ＮＣＨＷ未満の
回転速度では低速用巻線を使用し、巻線切替速度ＮＣＨ
Ｗ以上の回転数では高速用巻線を使用する。In this example, a speed command of 5000 rpm is given in a stopped state, a low speed winding is used at a rotation speed less than a preset winding switching speed NCHW, and the winding switching speed NCH is used.
High-speed windings are used at rotational speeds above W.
【００１６】停止状態からの加速の指令を行うため上位
コントローラ５は速度指令に５０００ｒ／ｍｉｎの値を
設定し、巻線切替指令（ＣＨＷ＝“０”）を電動機駆動
装置４へ出力する。電動機駆動装置４では巻線切替指令
ＣＨＷが低速巻線指令（ＣＨＷ＝“０”）に設定されて
いるため速度指令切替スイッチ１４は速度指令制限回路
１５側に接続され、速度制御器１６に与えられる内部速
度指令は正側の回転の場合は＋ＮＬＩＭＩＴ、負側の回
転の場合は−ＮＬＩＭＩＴに制限される。本実施形態に
おいては正側制限値＋ＮＬＩＭＩＴと巻線切替速度ＮＣ
ＨＷは同じ値として説明する。そこで電動機駆動装置４
は内部速度指令＋ＮＬＩＭＩＴを目標にして電動機１を
加速するパワーを電動機１に与える。…図２のＡ〜Ｂ区
間
速度検出部１１で計算された回転速度が巻線切替速度Ｎ
ＣＨＷと一致すると、速度一致判定回路１２が速度一致
信号（ＮＤＥＴ＝“１”）を出力し、Ｉ／Ｆ回路１３を
通じて上位コントローラ５へ渡される。…図２のＢ点
上位コントローラ５は速度一致信号（ＮＤＥＴ＝
“１”）を受け取りシーケンサなどで生じる時間遅れＴ
ｄ後に巻線切替信号ＣＨＷとして高速巻線指令（ＣＨＷ
＝“１”）を出力する。電動機駆動装置４では巻線切替
信号ＣＨＷが高速巻線指令（ＣＨＷ＝“１”）になった
ことを受けて、速度指令切替スイッチ１４が速度指令制
限回路１５をバイパスする側に接続され、上位コントロ
ーラ５から与えられた速度指令がそのまま内部速度指令
として速度制御器１６に与えられ、同時に電動機１の巻
線を低速用巻線から高速用巻線に変更するために巻線切
替器３に対して切替指令を出力する。この時、巻線切替
器３は電動機１の巻線を一旦切離して接続を変更するた
め電動機駆動装置４は電流を遮断する。このため速度指
令が切替わっても電動機１は加速しない。…図２のＢ〜
Ｃ区間
巻線切替器３は切替動作が完了すると巻線切替完了信号
（ＣＨＷＥ＝“１”）を電動機駆動装置４へ出力する。
…図２のＣ点
ここでは、巻線切替器３が低速用巻線に繋がっている状
態がＣＨＷＥ＝“０”、高速用巻線に繋がっている状態
でＣＨＷＥ＝“１”を出力することにしている。そして
ＣＨＷＥ＝“１”になったことを確認すると電動機駆動
装置４は上位コントローラ５から与えられた速度指令を
目標に電動機１を加速するように電動機１を制御する。In order to issue an acceleration command from the stopped state, the host controller 5 sets a speed command to a value of 5000 r / min and outputs a winding switching command (CHW = "0") to the motor drive device 4. In the motor drive device 4, since the winding switching command CHW is set to the low speed winding command (CHW = “0”), the speed command switching switch 14 is connected to the speed command limiting circuit 15 side and is given to the speed controller 16. The internal speed command is limited to + NLIMIT for positive rotation and -NLIMIT for negative rotation. In this embodiment, the positive limit value + NLIMIT and the winding switching speed NC
The HW will be described as the same value. Therefore, the motor drive device 4
Gives electric power to the electric motor 1 to accelerate the electric motor 1 with the target of the internal speed command + NLIMIT. The rotation speed calculated by the speed detection unit 11 in the section A to B in FIG. 2 is the winding switching speed N.
When it matches with CHW, the speed matching determination circuit 12 outputs a speed matching signal (NDET = “1”), which is passed to the host controller 5 through the I / F circuit 13. ... The B point upper controller 5 of FIG. 2 uses the speed coincidence signal (NDET =
"1") is received and a time delay T occurs in the sequencer, etc.
After d, the high-speed winding command (CHW
= “1”) is output. In the motor drive device 4, the speed command changeover switch 14 is connected to the side bypassing the speed command limiting circuit 15 in response to the fact that the winding changeover signal CHW becomes the high speed winding command (CHW = “1”), The speed command given from the controller 5 is given as it is to the speed controller 16 as an internal speed command, and at the same time, the winding switch 3 is changed to change the winding of the motor 1 from the low speed winding to the high speed winding. Output a switching command. At this time, the winding switching device 3 disconnects the winding of the electric motor 1 to change the connection, so that the electric motor drive device 4 cuts off the current. Therefore, the electric motor 1 does not accelerate even if the speed command is switched. ... B in FIG.
When the switching operation is completed, the C section winding switching device 3 outputs a winding switching completion signal (CHWE = “1”) to the electric motor drive device 4.
... Point C in FIG. 2 Here, CHWE = "0" is output when the winding switching device 3 is connected to the low speed winding, and CHWE = "1" is output when the winding switching device 3 is connected to the high speed winding. I have to. When it is confirmed that CHWE = “1”, the electric motor drive device 4 controls the electric motor 1 so as to accelerate the electric motor 1 with the speed command given from the host controller 5 as a target.
【００１７】図３は本発明の他の実施形態の電動機駆動
装置のブロック図である。本実施形態は、図１の実施形
態の速度指令制限回路１５の前段部の速度指令切替スイ
ッチ１４をなくし、上位コントローラ５からの巻線切替
指令ＣＨＷを受け取り、巻線切替指令ＣＨＷに応じて速
度制限回路１８の制限値を予め設定された、各巻線で回
転可能な制限値に切替える。図中Ｎｌｉｍｉｔ１は高速
用巻線時の速度制限値、Ｎｌｉｍｉｔ２は低速用巻線時
の速度制限値を示し、巻線切替指令ＣＨＷに応じて各制
限値を速度指令制限回路１８に設定する。電動機駆動装
置４はこの速度指令制限回路１８で制限された速度指令
を速度制御器１６の入力として用いて速度の制御を行
う。FIG. 3 is a block diagram of an electric motor drive device according to another embodiment of the present invention. In the present embodiment, the speed command changeover switch 14 at the preceding stage of the speed command limiting circuit 15 of the embodiment of FIG. 1 is eliminated, the winding changeover command CHW is received from the host controller 5, and the speed is changed according to the winding changeover command CHW. The limit value of the limit circuit 18 is switched to a preset limit value that allows rotation in each winding. In the figure, Nlimit1 indicates a speed limit value during high-speed winding, and Nlimit2 indicates a speed limit value during low-speed winding, and each limit value is set in the speed command limiting circuit 18 according to the winding switching command CHW. The motor drive device 4 controls the speed by using the speed command limited by the speed command limiting circuit 18 as an input of the speed controller 16.
【００１８】本実施形態は、一般に速度指令に過大な入
力があった場合に機械や電動機を壊さないために速度指
令の入力部に設けられた速度制限回路を流用し、低速巻
線指令がきた時には制限値を通常の制限値（高速用巻線
時）から低速巻線用の制限値に切替えることで、第１の
実施の形態と同様の動作を実現しようとするものであ
る。In the present embodiment, generally, a speed limiting circuit provided in the speed command input section is diverted in order to prevent a machine or an electric motor from being damaged when a speed command receives an excessive input, and a low speed winding command is received. At times, the limit value is switched from the normal limit value (during high-speed winding) to the limit value for low-speed winding to achieve the same operation as that of the first embodiment.
【００１９】なお、本発明に用いる電動機としては、誘
導電動機だけでなく、回転子表面または回転子鉄心内部
に永久磁石を持つ永久磁石形同期電動機を用いることが
できる。As the electric motor used in the present invention, not only an induction motor but also a permanent magnet type synchronous electric motor having a permanent magnet on the rotor surface or inside the rotor iron core can be used.
【００２０】[0020]
【発明の効果】以上説明したように、本発明によれば、
上位の巻線切替シーケンス処理などに遅れがあっても、
低速巻線状態で速度指令に制限がかかり、低速巻線の許
容値を超える速度になることなくスムーズな巻線切替え
が可能となる。As described above, according to the present invention,
Even if there is a delay in the upper winding switching sequence processing,
The speed command is limited in the low-speed winding state, and smooth winding switching is possible without exceeding the speed that exceeds the allowable value of the low-speed winding.
【図１】本発明の一実施形態の電動機駆動装置のブロッ
ク図である。FIG. 1 is a block diagram of an electric motor drive device according to an embodiment of the present invention.
【図２】巻線切替処理のタイミングチャートである。FIG. 2 is a timing chart of winding switching processing.
【図３】本発明の他の実施形態の電動機駆動装置のブロ
ック図である。FIG. 3 is a block diagram of an electric motor drive device according to another embodiment of the present invention.
【図４】従来の巻線切替処理のフローチャートである。FIG. 4 is a flowchart of a conventional winding switching process.
【図５】従来の巻線切替処理のタイミングチャートであ
る。FIG. 5 is a timing chart of conventional winding switching processing.
１ 電動機 ２ ＰＧ ３ 巻線切替器 ４ 電動機駆動装置 ５ 上位コントローラ １１ 速度検出部 １２ 速度一致判定回路 １３ Ｉ／Ｆ回路 １４ 速度切替スイッチ １５，１８ 速度指令制限回路 １６ 速度制御器 １７ パワー変換部 ２０〜３０ ステップ 1 electric motor 2 PG 3 winding changer 4 Electric motor drive 5 Host controller 11 Speed detector 12 Speed coincidence determination circuit 13 I / F circuit 14 Speed change switch 15, 18 Speed command limiting circuit 16 Speed controller 17 Power converter 20-30 steps
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H575 AA19 BB10 DD03 DD05 DD06 DD10 EE01 GG02 HB20 JJ28 KK08 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 5H575 AA19 BB10 DD03 DD05 DD06 DD10 EE01 GG02 HB20 JJ28 KK08
Claims (3)
の巻線切替方法において、 低速用巻線が選択されている間は速度指令を、該低速用
巻線で運転可能な速度制限値に制限することを特徴とす
る、電動機の巻線切替方法。1. A winding switching method for an electric motor having a low speed winding and a high speed winding, wherein a speed command is issued while the low speed winding is selected, and a speed limit for operating the low speed winding is provided. A method for switching windings of an electric motor, characterized by limiting to a value.
を駆動する電動機駆動装置において、 電動機の回転速度を検出する速度検出部と、 前記回転速度が巻線切替速度に一致すると速度一致信号
を出力する速度一致判定回路と、 入力された速度指令を制限し、速度制御器に出力する速
度指令制限回路と、 上位コントローラからの速度指令を入力し、また前記速
度一致信号を前記上位コントローラに出力し、前記上位
コントローラが出力した巻線切替指令を入力するＩ／Ｆ
回路と、 前記Ｉ／Ｆ回路が入力した速度指令を、前記巻線切替指
令が低速用巻線を選択する指令であった場合、前記速度
指令制限回路に出力し、前記巻線切替指令が高速用巻線
を選択する指令であった場合、前記速度制御器に出力す
る速度指令切替スイッチを有することを特徴とする電動
機駆動装置。2. A motor drive device for driving an electric motor having a winding for low speed and a winding for high speed, wherein a speed detector for detecting a rotation speed of the motor and a speed matching when the rotation speed matches a winding switching speed. A speed match determination circuit that outputs a signal, a speed command limit circuit that limits the input speed command and outputs it to the speed controller, and a speed command from the host controller is input, and the speed match signal is input to the host controller. I / F for outputting the winding switching command output by the host controller
Circuit, the speed command input by the I / F circuit is output to the speed command limiting circuit when the winding switching command is a command for selecting a low speed winding, and the winding switching command is high speed. An electric motor drive device comprising a speed command changeover switch for outputting to the speed controller when the command is to select a winding for use.
を駆動する電動機駆動装置において、 電動機の回転速度を検出する速度検出部と、 前記回転速度が巻線切替速度に一致すると速度一致信号
を出力する速度一致判定回路と、 上位コントローラからの速度指令を入力し、また前記速
度一致信号を前記上位コントローラに出力し、前記上位
コントローラが出力した巻線切替指令を入力するＩ／Ｆ
回路と、 前記Ｉ／Ｆ回路に入力された速度指令を入力し、前記巻
線切替指令が低速用巻線を選択する指令であった場合、
前記速度指令を制限して速度制御器に出力し、前記巻線
切替指令が高速用巻線を選択する指令であった場合、前
記速度指令をそのまま前記速度制御器に出力する速度指
令制限回路を有することを特徴とする電動機駆動装置。3. A motor drive device for driving an electric motor having a winding for low speed and a winding for high speed, wherein a speed detector for detecting a rotation speed of the motor and a speed matching when the rotation speed matches a winding switching speed. I / F for inputting a speed command from a host controller that outputs a signal and a speed match determination circuit that outputs a signal, and outputs the speed match signal to the host controller and the winding switching command output by the host controller
Circuit and the speed command input to the I / F circuit is input, and the winding switching command is a command to select a low speed winding,
When the speed command is limited and output to the speed controller, and the winding switching command is a command for selecting a high-speed winding, a speed command limiting circuit that outputs the speed command to the speed controller as it is An electric motor drive device having.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001219879A JP3686995B2 (en) | 2001-07-19 | 2001-07-19 | Motor winding switching method and motor drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001219879A JP3686995B2 (en) | 2001-07-19 | 2001-07-19 | Motor winding switching method and motor drive device |
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| Publication Number | Publication Date |
|---|---|
| JP2003033067A true JP2003033067A (en) | 2003-01-31 |
| JP3686995B2 JP3686995B2 (en) | 2005-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008228513A (en) * | 2007-03-15 | 2008-09-25 | Mitsubishi Electric Corp | Motor drive device and driving method, and refrigerating and air-conditioning device |
-
2001
- 2001-07-19 JP JP2001219879A patent/JP3686995B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008228513A (en) * | 2007-03-15 | 2008-09-25 | Mitsubishi Electric Corp | Motor drive device and driving method, and refrigerating and air-conditioning device |
| JP4722069B2 (en) * | 2007-03-15 | 2011-07-13 | 三菱電機株式会社 | Electric motor drive device, electric motor drive method, and refrigeration air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3686995B2 (en) | 2005-08-24 |
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