JPH01133583A - Breaking device for motor - Google Patents
Breaking device for motorInfo
- Publication number
- JPH01133583A JPH01133583A JP28907487A JP28907487A JPH01133583A JP H01133583 A JPH01133583 A JP H01133583A JP 28907487 A JP28907487 A JP 28907487A JP 28907487 A JP28907487 A JP 28907487A JP H01133583 A JPH01133583 A JP H01133583A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- motor
- short
- synchronous motor
- rectifier
- 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 claims abstract description 24
- 230000003068 static effect Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 abstract description 27
- 239000003990 capacitor Substances 0.000 abstract description 7
- 230000001172 regenerating effect Effects 0.000 abstract description 2
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 230000005856 abnormality Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Stopping Of Electric Motors (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、電動機の駆動中に、異常が発生したり、電
源の供給が停止した場合に、電動機が慣性で回転を継続
するのを防止するために電動機の電源供給路を短絡して
、発電制動（回生制動）を作用させる電動機の制動装置
に関する。[Detailed Description of the Invention] <Industrial Application Field> This invention prevents the motor from continuing to rotate due to inertia when an abnormality occurs or the power supply stops while driving the motor. The present invention relates to a braking device for an electric motor that short-circuits a power supply path of the electric motor to apply dynamic braking (regenerative braking).
〈従来の技術〉
第２図は、産業用ロボットの駆動装置などに適用される
従来のＤＣサーボモータの基本構成を示す。図示例のも
のは、整流器１．コンデンサ２．ＤＣチョッパ３．制御
卸回路４などをその主要構成として含み、直流電動機５
の電源供給路６には、直流電動機５が非常停止したとき
などに発電制動により直流電動機５を強制停止させるた
めの短絡回路７が設けである。前記整流器１はＲ，Ｓ、
Ｔの三相交流入力を整流し、またコンデンサ２はその整
流出力を平滑するためのものである。ＤＣチョッパ３は
４個のトランジスタＴＲ＋ 〜ＴＲ４を含み、これらト
ランジスタのスイッチング動作により直流電動機５への
供給電力を制御する。制御回路４は直流電動機５にカッ
プリングされたタコジェネレータ８からの信号入力に基
づき直流電動機５の速度や位置などを制御する。<Prior Art> FIG. 2 shows the basic configuration of a conventional DC servo motor applied to drive devices of industrial robots, etc. The illustrated example is a rectifier 1. Capacitor 2. DC Chopper 3. The main components include a control wholesale circuit 4, etc., and a DC motor 5.
The power supply path 6 is provided with a short circuit 7 for forcibly stopping the DC motor 5 by dynamic braking when the DC motor 5 comes to an emergency stop. The rectifier 1 has R, S,
The three-phase AC input of T is rectified, and the capacitor 2 is for smoothing the rectified output. DC chopper 3 includes four transistors TR+ to TR4, and controls power supplied to DC motor 5 by switching operations of these transistors. The control circuit 4 controls the speed, position, etc. of the DC motor 5 based on signal input from a tacho generator 8 coupled to the DC motor 5.
前記整流器１の入力側には第１．第２の電磁接触器９，
１０が配備してあり、制御指令により制御回路４の接点
１１が閉じると、第１の電磁接触器９が付勢されてその
接点１２が閉じ、第２の電磁接触器１０が付勢されるよ
うになっている。On the input side of the rectifier 1, there is a first. second electromagnetic contactor 9,
10 is provided, and when the contact 11 of the control circuit 4 is closed by a control command, the first electromagnetic contactor 9 is energized, its contact 12 is closed, and the second electromagnetic contactor 10 is energized. It looks like this.
前記短絡回路７には、この第２の電磁接触器１０の接点
１３と電流制限用抵抗１４とが配備してあり、駆動時に
第２の電磁接触器１０が付勢されると、接点１３が開い
て短絡回路７が開放される。また非常停止時などに第２
の電磁接触器１０が消勢されると、接点１３が閉じて短
絡回路７が短絡され、直流電動機５に対し発電制動がか
かることになる。The short circuit 7 is provided with a contact 13 of the second electromagnetic contactor 10 and a current limiting resistor 14, and when the second electromagnetic contactor 10 is energized during driving, the contact 13 is turned on. When it opens, the short circuit 7 is opened. In addition, the second
When the electromagnetic contactor 10 is deenergized, the contact 13 closes, the short circuit 7 is short-circuited, and the DC motor 5 is subjected to dynamic braking.
第３図は、従来のＡＣサーボモータの基本構成例である
。図示例のものは、整流器２１．コンデンサ２２．イン
バータ２３．制御回路２４などの主要構成に加えて、同
期電動機２５の電源供給路２６に、発電制動により同期
電動機２５を強制停止させるための短絡回路２７が設け
である。インバータ２３は６個の電力用トランジスタＴ
Ｒ，〜↑Ｒ６をメインスイッチとした３相変換回路であ
り、通常ＰＷＭ制御が通用される。制御回路２４は同期
電動機２５にカップリングされたレゾルバ２８からの信
号入力に基づき同期電動機２５の速度や位置などを制御
する。FIG. 3 shows an example of the basic configuration of a conventional AC servo motor. In the illustrated example, the rectifier 21. Capacitor 22. Inverter 23. In addition to the main components such as the control circuit 24, the power supply path 26 of the synchronous motor 25 is provided with a short circuit 27 for forcibly stopping the synchronous motor 25 by dynamic braking. The inverter 23 has six power transistors T
It is a three-phase conversion circuit with R, to ↑R6 as main switches, and PWM control is normally used. The control circuit 24 controls the speed, position, etc. of the synchronous motor 25 based on signal input from a resolver 28 coupled to the synchronous motor 25.
前記短絡回路２７は、同期電動機２５と並列に設けられ
た整流回路２９を備えており、この整流回路２９の整流
出力回路３０にはトライアック３１と電流制限用抵抗３
２とが配備しである。前記トライアック３Ｉのゲート側
にはフォトトライアックより成るスイッチ素子３２が設
けてあり、同期電動機２５が非常停止したときなどに制
御回路２４がスイッチ素子３２をオンさせると、トライ
アック３１が導通して整流出力回路３３を短絡し、これ
により同期電動機２５に対し発電制動がかかるようにな
っている。The short circuit 27 includes a rectifier circuit 29 provided in parallel with the synchronous motor 25, and a rectifier output circuit 30 of the rectifier circuit 29 includes a triac 31 and a current limiting resistor 3.
2 is in place. A switching element 32 made of a phototriac is provided on the gate side of the triac 3I, and when the control circuit 24 turns on the switching element 32 when the synchronous motor 25 comes to an emergency stop, the triac 31 becomes conductive and produces a rectified output. The circuit 33 is short-circuited, thereby applying dynamic braking to the synchronous motor 25.
く問題点を解決するための手段〉
ところが第２図に示す従来例の場合、非常停止時などに
第２の電磁接触器１０が消勢して、短絡回路７の接点１
３が閉じるのに、一般に２０ミリ秒程度の動作応答遅れ
が発生する。このため短絡回路７の短絡による発電制動
がかかるのに時間がかかり、直流電動機５の慣性による
回転量が増加するという欠点がある。However, in the case of the conventional example shown in FIG. 2, the second electromagnetic contactor 10 is deenergized during an emergency stop, etc.
3 closes, there is generally an operational response delay of about 20 milliseconds. Therefore, there is a drawback that it takes time for the dynamic braking to be applied due to the short circuit of the short circuit 7, and the amount of rotation due to the inertia of the DC motor 5 increases.
これに対し第３図に示す従来例の場合、短絡回路２７を
短絡する手段としてトライアック３１が用いであるため
、応答時間は速くなって同期電動機２５の慣性による回
転量は少なくなるが、同期電動機２５の停止後の無電圧
状態ではトライアック３１はオフ状態となるため、再度
外力が同期電動機２５に加えられると、短絡回路２７の
短絡による発電制動がかか・らず、同期電動機２５が外
力で大きく動かされるという問題がある。On the other hand, in the case of the conventional example shown in FIG. 3, since the triac 31 is used as a means to short-circuit the short-circuit circuit 27, the response time becomes faster and the amount of rotation due to the inertia of the synchronous motor 25 is reduced. Since the triac 31 is in the OFF state in the no-voltage state after the motor 25 has stopped, when an external force is applied to the synchronous motor 25 again, dynamic braking due to the short circuit in the short circuit 27 is not applied, and the synchronous motor 25 is turned off by the external force. The problem is that it is greatly influenced.
この発明は、上記問題に着目してなされたもので、短絡
回路を短絡する手段として静電誘導型トランジスタを用
いることにより、高速応答を実現でき、かつ電動機停止
後の無電圧状態でも制動作用の得られる新規な電動機の
制動装置を提供することを目的とする。This invention was made with attention to the above problem, and by using an electrostatic induction transistor as a means for shorting a short circuit, it is possible to achieve a high-speed response, and even in a no-voltage state after the motor has stopped, it is possible to achieve a braking action. The object of the present invention is to provide a novel braking device for an electric motor.
〈発明が解決しようとする問題点〉
上記目的を達成するため、この発明では、電動機の電源
供給路に、発電制動により電動機を強制停止させるため
の短絡回路を設けた電動機の制動装置において、前記短
絡回路には、無電圧状態で導通して短絡回路を短絡させ
る静電誘導型トランジスタを配備することにした。<Problems to be Solved by the Invention> In order to achieve the above object, the present invention provides a braking device for a motor in which a short circuit is provided in the power supply path of the motor for forcibly stopping the motor by dynamic braking. We decided to equip the short circuit with a static induction transistor that conducts without voltage and shorts the short circuit.
く作用〉
電動機の通常運転時は、静電誘導型トランジスタのゲー
トに負電圧を与えて、ドレイン−ソース間を「閉」の状
態に設定し、短絡回路を開放しておく。Function> During normal operation of the motor, a negative voltage is applied to the gate of the electrostatic induction transistor to set the drain-source to "closed" state and open the short circuit.
電動機の非常停止時、静電誘導型トランジスタのゲート
電圧をゼロに設定すると、ドレイン−ソース間が導通し
、短絡回路が短絡されて発電制動がかかる。この場合に
静電誘導型トランジスタは高速応答するため、短時間で
制動がかかり、電動機の慣性による回転量は少なくなる
。During an emergency stop of the motor, when the gate voltage of the electrostatic induction transistor is set to zero, conduction occurs between the drain and source, the short circuit is shorted, and dynamic braking is applied. In this case, since the electrostatic induction transistor responds quickly, braking is applied in a short time, and the amount of rotation due to the inertia of the motor is reduced.
しかも停止後の無電圧状態では静電誘導型トランリスタ
のゲート電圧はゼロであり、制動状態が維持されるから
、電動機が外力で大きく動かされることはない。Moreover, in the no-voltage state after stopping, the gate voltage of the electrostatic induction transristor is zero, and the braking state is maintained, so the motor is not moved significantly by external force.
〈実施例〉
第１図は・この発明をＡＣサーボモータに実施した例を
示すが、この発明はこれに限らず、ＤＣサーボモータに
も適用できることは勿論である。図示例のものは、整流
機２１．コンデンサ２２．インバータ２３．制御回路２
４などを主要構成として含むものであり、これら各構成
は第２図の従来例と同様である。従ってここでは第２図
のものと対応する構成には同一の符号を付しである。<Embodiment> Although FIG. 1 shows an example in which the present invention is applied to an AC servo motor, the present invention is not limited to this, and can of course be applied to a DC servo motor. The illustrated example has a rectifier 21. Capacitor 22. Inverter 23. Control circuit 2
4 and the like as main components, and each of these components is the same as the conventional example shown in FIG. Therefore, components corresponding to those in FIG. 2 are designated by the same reference numerals.
第１図において、整流器２１は半導体整流素子を使用し
た３相全波または単相全波の整流回路で構成され、Ｒ，
Ｓ、 Ｔの３相交流入力を整流する。コンデンサ２２は
整流器２１の整流出力を平滑する他、同期電動機２５か
らの回生電力および無効電力を吸収する。インバータ２
３は３相変換回路を構成する６個の電力用トランジスタ
ＴＲ，−ＴＲ＆を含み、各トランジスタＴＲ。In FIG. 1, the rectifier 21 is composed of a three-phase full-wave or single-phase full-wave rectifier circuit using semiconductor rectifying elements, and R,
Rectifies S and T three-phase AC input. The capacitor 22 smoothes the rectified output of the rectifier 21 and also absorbs regenerated power and reactive power from the synchronous motor 25. Inverter 2
3 includes six power transistors TR, -TR& constituting a three-phase conversion circuit, each transistor TR.
〜Ｔ＋？、にはフライホイールダイオードＤ１〜Ｄ６が
接続しである。制御回路２４は同期電動機２５にカップ
リングされたレゾルバ２８より位置および速度検出信号
を入力して同期電動機２５の速度制御や位置制御などの
各種制御を実行する。~T+? , are connected to flywheel diodes D1 to D6. The control circuit 24 inputs position and speed detection signals from a resolver 28 coupled to the synchronous motor 25 and executes various controls such as speed control and position control of the synchronous motor 25.
また制御指令により内部の接点３９を閉じて電磁接触器
３７を付勢し、その電磁接触器３７の接点３８を閉じて
整流器２１の入力回路を導通させる。Further, the control command closes the internal contact 39 to energize the electromagnetic contactor 37, and closes the contact 38 of the electromagnetic contactor 37 to make the input circuit of the rectifier 21 conductive.
前記同期電動機２５の電源供給路２６には、同期電動機
２５が非常停止したときなどに発電制動により同期電動
機２５を強制停止させるための短絡回路２７が設けであ
る。この短絡回路２７は同！１１１電動機２５と並列に
設けられた整流回路２９を備え、この整流回路２９の整
流出力回路３０には静電誘導型トランジスタ３４と電流
制限用抵抗３２とが設けである。前記静電誘導型トラン
ジスタ３４のゲートには、ゲート−ソース間に負電圧を
印加するためのバッテリ３５オヨヒゲート抵抗３６が接
続されると共に０のゲート回路にはフォトカプラより成
るスイッチ素子４０が介装−されている。The power supply path 26 of the synchronous motor 25 is provided with a short circuit 27 for forcibly stopping the synchronous motor 25 by dynamic braking when the synchronous motor 25 comes to an emergency stop. This short circuit 27 is the same! A rectifier circuit 29 is provided in parallel with the 111 motor 25, and a rectifier output circuit 30 of the rectifier circuit 29 is provided with an electrostatic induction transistor 34 and a current limiting resistor 32. A battery 35 and a gate resistor 36 for applying a negative voltage between the gate and the source are connected to the gate of the electrostatic induction transistor 34, and a switch element 40 made of a photocoupler is interposed in the gate circuit of 0. − has been done.
この静電誘導型トランジスタ３４は・ゲート−ソース間
に負電圧が印加されると、ドレイン−ソース間が高抵抗
となって非導通状態となり、またゲート−ソース間の電
圧をゼロにすると、ドレイン−ソース間が低抵抗となっ
て導通状態となる。When a negative voltage is applied between the gate and the source, the static induction transistor 34 becomes non-conductive due to high resistance between the drain and the source, and when the voltage between the gate and the source is reduced to zero, the drain -The resistance between the source and the source becomes low, resulting in a conductive state.
しかして同期電動機２５を駆動するとき、制御回路２４
はスイッチ素子４０を「閉」の状態に設定して、静電誘
導型トランジスタ３４のゲート回路を導通させ、バッテ
リ３５およびゲート抵抗３６により静電誘導型トランジ
スタ３４のゲート−ソース間に負電圧が印加される。こ
れにより静電誘導型トランジスタ３４はドレイン−ソー
ス間が高抵抗となって非導通状態となり、整流出力回路
３０、すなわち短絡回路２７は開路する。Therefore, when driving the synchronous motor 25, the control circuit 24
sets the switch element 40 to the "closed" state to make the gate circuit of the static induction transistor 34 conductive, and a negative voltage is generated between the gate and source of the static induction transistor 34 by the battery 35 and the gate resistor 36. applied. As a result, the electrostatic induction transistor 34 has a high resistance between its drain and source and becomes non-conductive, and the rectifier output circuit 30, that is, the short circuit 27 is opened.
いま同期電動機２５の駆動中に、異常が発生したり、電
源の供給が停止された場合、制御回路２４はスイッチ素
子４０を「開」の状態に設定して、静電誘導型トランジ
スタ３４のゲート回路を開路し、静電誘導型トランジス
タ３４のゲート−ソース間の電圧をゼロとする。これに
より静電誘導型トランジスタ３４はドレイン−ソース間
が低抵抗となって導通状態となり、整流出力回路３０、
すなわち短絡回路２７は閉路して、同期電動機２５に発
電制動がかかる。If an abnormality occurs or the power supply is stopped while the synchronous motor 25 is currently being driven, the control circuit 24 sets the switch element 40 to the "open" state and closes the gate of the static induction transistor 34. The circuit is opened and the voltage between the gate and source of the static induction transistor 34 is set to zero. As a result, the electrostatic induction transistor 34 becomes conductive with low resistance between the drain and source, and the rectifier output circuit 30,
That is, the short circuit 27 is closed and the synchronous motor 25 is subjected to dynamic braking.
さらに同期電動機２５が停止して後の無電圧状態では、
静電誘導型トランジスタ３４のゲート−ソース間の電圧
はゼロであるから、同期電動機２５に外力が作用しても
、発電制動がかかり、同期電動機２５が外力で大きく動
かされることはない。Furthermore, in the no-voltage state after the synchronous motor 25 has stopped,
Since the voltage between the gate and source of the static induction transistor 34 is zero, even if an external force acts on the synchronous motor 25, dynamic braking is applied and the synchronous motor 25 is not moved significantly by the external force.
〈発明の効果〉
この発明は上記の如く、短絡回路を短絡する手段として
静電誘導型トランジスタを用いたから、電動機の非常停
止時、静電誘導型トランジスタが高速応答して短時間で
制動がかかり、電動機の慣性による回転量は少なくなる
。し力・も停止後の無電圧状態でも静電誘導型トランジ
スタにより制動状態が維持されるから、電動機が外力で
動かされることはないなど、発明目的を達成した顕著な
効果を奏する。<Effects of the Invention> As described above, this invention uses an electrostatic induction transistor as a means for shorting a short circuit, so when an emergency stop of the motor occurs, the electrostatic induction transistor responds quickly and brakes in a short time. , the amount of rotation due to the inertia of the electric motor decreases. Since the braking state is maintained by the electrostatic induction transistor even in a no-voltage state after the motor has stopped, the motor is not moved by external force, achieving the remarkable effect of achieving the purpose of the invention.
第１図はこの発明の一実施例にかかる制動装置が適用さ
れたＡＣサーボモータの基本構成を示す電気回路図、第
２図および第３図は従来の制動装置が適用されたサーボ
モータの構成を示す電気回路図である。
５・・・・直流電動機 ２５・・・・同期電動機７
．２７・・・・短絡回路
３４０．・・静電誘導型トランジスタFIG. 1 is an electric circuit diagram showing the basic configuration of an AC servo motor to which a braking device according to an embodiment of the present invention is applied, and FIGS. 2 and 3 show the configuration of a servo motor to which a conventional braking device is applied. FIG. 5...DC motor 25...Synchronous motor 7
．． 27...Short circuit 340.・・Static induction transistor
Claims (2)
強制停止させるための短絡回路が設けられた電動機の制
動装置において、前記短絡回路には、無電圧状態で導通
して短絡回路を短絡させる静電誘導型トランジスタが配
備されて成る電動機の制動装置。(1) In a motor braking device in which a short circuit for forcibly stopping the motor by dynamic braking is provided in the power supply path of the motor, the short circuit is electrically connected in a no-voltage state to short-circuit the short circuit. A motor braking device equipped with static induction transistors.
回路を備えて、この整流回路の出力回路に前記静電誘導
型トランジスタが配備されている特許請求の範囲第１項
記載の電動機の制動装置。(2) The motor according to claim 1, wherein the short circuit includes a rectifier circuit provided in parallel with the motor, and the electrostatic induction transistor is provided in the output circuit of the rectifier circuit. Braking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28907487A JPH01133583A (en) | 1987-11-16 | 1987-11-16 | Breaking device for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28907487A JPH01133583A (en) | 1987-11-16 | 1987-11-16 | Breaking device for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01133583A true JPH01133583A (en) | 1989-05-25 |
Family
ID=17738487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28907487A Pending JPH01133583A (en) | 1987-11-16 | 1987-11-16 | Breaking device for motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01133583A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6900606B2 (en) | 2002-12-23 | 2005-05-31 | Samsung Electronics Co., Ltd | Device for inrush current prevention and dynamic braking in a motor |
| FR2920610A1 (en) * | 2007-09-04 | 2009-03-06 | Alstom Transport Sa | SECURITY RHEOSTATIC BRAKE DEVICE WITH BIPOLAR REISISTIC ASSEMBLY WITH PERMANENT MAGNET MOTOR. |
| FR2920611A1 (en) * | 2007-09-04 | 2009-03-06 | Alstom Transport Sa | SECURITY ELECTRIC BRAKE DEVICE WITH PERMANENT MAGNET MOTOR AND BRAKE TORQUE REGULATION. |
| AT504808B1 (en) * | 2003-11-14 | 2009-08-15 | Bernecker & Rainer Ind Elektro | SYNCHRONOUS MACHINE |
| JP2010028997A (en) * | 2008-07-22 | 2010-02-04 | Seiko Epson Corp | Electric motor, power supply cut-off control circuit thereof, and power supply cut-off control method |
| US8026681B2 (en) | 2006-12-22 | 2011-09-27 | Heidelberger Druckmaschinen Ag | Safe electric braking device for printing presses and method of electrically braking an electric drive in a machine processing printing material |
| JP2012205498A (en) * | 2011-03-24 | 2012-10-22 | General Electric Co <Ge> | Shorting protection for systems having electric machines |
| CN107623466A (en) * | 2017-09-30 | 2018-01-23 | 北京交通大学 | A kind of brake apparatus and braking method for handing over orthogonal traction drive |
| JP2019149916A (en) * | 2018-02-28 | 2019-09-05 | ミネベアミツミ株式会社 | Motor drive control device and motor drive control method |
| WO2019167428A1 (en) * | 2018-02-28 | 2019-09-06 | ミネベアミツミ株式会社 | Motor drive control device and motor drive control method |
| US11146188B2 (en) | 2017-08-21 | 2021-10-12 | Minebea Mitsumi Inc. | Motor driving control apparatus and motor driving control method |
| EP4227142A1 (en) * | 2022-02-09 | 2023-08-16 | Volvo Truck Corporation | An electric machine drive arrangement for a heavy-duty vehicle |
-
1987
- 1987-11-16 JP JP28907487A patent/JPH01133583A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6900606B2 (en) | 2002-12-23 | 2005-05-31 | Samsung Electronics Co., Ltd | Device for inrush current prevention and dynamic braking in a motor |
| AT504808B1 (en) * | 2003-11-14 | 2009-08-15 | Bernecker & Rainer Ind Elektro | SYNCHRONOUS MACHINE |
| US8026681B2 (en) | 2006-12-22 | 2011-09-27 | Heidelberger Druckmaschinen Ag | Safe electric braking device for printing presses and method of electrically braking an electric drive in a machine processing printing material |
| EP2033834A3 (en) * | 2007-09-04 | 2015-12-09 | ALSTOM Transport Technologies | Device for secure dynamic braking with a bipolar resistive element with permanent magnet motor |
| US7982418B2 (en) | 2007-09-04 | 2011-07-19 | Alstom Transport Sa | Rheostatic safety braking device having a bipolar resistive assembly with permanent magnet motor |
| FR2920611A1 (en) * | 2007-09-04 | 2009-03-06 | Alstom Transport Sa | SECURITY ELECTRIC BRAKE DEVICE WITH PERMANENT MAGNET MOTOR AND BRAKE TORQUE REGULATION. |
| US8148925B2 (en) | 2007-09-04 | 2012-04-03 | Alstom Transport Sa | Electric safety braking device with permanent magnet motor and breaking torque control |
| EP2033833A3 (en) * | 2007-09-04 | 2015-11-18 | ALSTOM Transport Technologies | Secure electric braking device with permanent magnet motor and braking torque regulation |
| FR2920610A1 (en) * | 2007-09-04 | 2009-03-06 | Alstom Transport Sa | SECURITY RHEOSTATIC BRAKE DEVICE WITH BIPOLAR REISISTIC ASSEMBLY WITH PERMANENT MAGNET MOTOR. |
| JP2010028997A (en) * | 2008-07-22 | 2010-02-04 | Seiko Epson Corp | Electric motor, power supply cut-off control circuit thereof, and power supply cut-off control method |
| JP2012205498A (en) * | 2011-03-24 | 2012-10-22 | General Electric Co <Ge> | Shorting protection for systems having electric machines |
| US11146188B2 (en) | 2017-08-21 | 2021-10-12 | Minebea Mitsumi Inc. | Motor driving control apparatus and motor driving control method |
| CN107623466B (en) * | 2017-09-30 | 2019-07-12 | 北京交通大学 | A kind of straight brake apparatus and braking method for handing over traction drive of friendship |
| CN107623466A (en) * | 2017-09-30 | 2018-01-23 | 北京交通大学 | A kind of brake apparatus and braking method for handing over orthogonal traction drive |
| JP2019149916A (en) * | 2018-02-28 | 2019-09-05 | ミネベアミツミ株式会社 | Motor drive control device and motor drive control method |
| WO2019167427A1 (en) * | 2018-02-28 | 2019-09-06 | ミネベアミツミ株式会社 | Motor drive control device and motor drive control method |
| WO2019167428A1 (en) * | 2018-02-28 | 2019-09-06 | ミネベアミツミ株式会社 | Motor drive control device and motor drive control method |
| CN111771329A (en) * | 2018-02-28 | 2020-10-13 | 美蓓亚三美株式会社 | Motor drive control device and motor drive control method |
| CN111837330A (en) * | 2018-02-28 | 2020-10-27 | 美蓓亚三美株式会社 | Motor drive control device and motor drive control method |
| US11228261B2 (en) | 2018-02-28 | 2022-01-18 | Minebea Mitsumi Inc. | Motor driving control apparatus and motor driving control method |
| US11303231B2 (en) | 2018-02-28 | 2022-04-12 | Minebea Mitsumi Inc. | Motor driving control apparatus and motor driving control method |
| EP4227142A1 (en) * | 2022-02-09 | 2023-08-16 | Volvo Truck Corporation | An electric machine drive arrangement for a heavy-duty vehicle |
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