JPH077981A - Damping method for electric motor by means of inverter device - Google Patents
Damping method for electric motor by means of inverter deviceInfo
- Publication number
- JPH077981A JPH077981A JP5146628A JP14662893A JPH077981A JP H077981 A JPH077981 A JP H077981A JP 5146628 A JP5146628 A JP 5146628A JP 14662893 A JP14662893 A JP 14662893A JP H077981 A JPH077981 A JP H077981A
- Authority
- JP
- Japan
- Prior art keywords
- inverter
- motor
- value
- braking
- voltage command
- 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.)
- Granted
Links
Landscapes
- Stopping Of Electric Motors (AREA)
- Inverter Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電圧形インバータ装
置によるその駆動電動機の制動制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking control method for a drive motor of a voltage source inverter device.
【０００２】[0002]
【従来の技術】従来のこの種の制動方法としては、図２
に例示する回路図に従って行われるものが知られてい
る。図２は誘導電動機をその駆動対象とする電圧形イン
バータ装置の主回路構成を示すものであり、交流電源か
らの交流入力整流用の整流部１と、直流中間回路を形成
する整流電圧平滑用のコンデンサＣF と、このコンデン
サの端子電圧をその直流入力電圧として所要の交流電圧
を出力するインバータ部２とを通常のインバータ運転用
（力行運転用）主回路構成要素とし、回生電力を消費さ
せる制動抵抗ＲD と、図示されていない制御回路によっ
てその開閉動作が制御され前記制動抵抗への通電状態を
制御するトランジスタＴＲとを誘導電動機３に対する制
動運転用要素として構成された状態を示すものである。2. Description of the Related Art A conventional braking method of this type is shown in FIG.
What is performed according to the circuit diagram illustrated in FIG. FIG. 2 shows a main circuit configuration of a voltage source inverter device in which an induction motor is driven, and a rectifying unit 1 for rectifying an AC input from an AC power source and a rectifying voltage smoothing unit for forming a DC intermediate circuit. Braking that consumes regenerative power by using a capacitor C F and an inverter unit 2 that outputs a required AC voltage by using a terminal voltage of the capacitor as a DC input voltage thereof as a main circuit component for normal inverter operation (for power running operation) 1 shows a state in which a resistor R D and a transistor TR whose opening / closing operation is controlled by a control circuit (not shown) and which controls the energization state to the braking resistor are configured as a braking operation element for the induction motor 3. .
【０００３】ここに、従来のこの種の制動方法は、前記
インバータ装置による誘導電動機３の制動制御時に、こ
の電動機からの回生電力を受けコンデンサＣF の端子電
圧が所定値以上に上昇すれば、トランジスタＴＲをオン
状態となし、コンデンサＣFの蓄積電荷を制動抵抗ＲD
を経由して放電させ、この抵抗において前記回生電力を
熱消費させることにより、誘導電動機３の制動減速を行
うものである。According to the conventional braking method of this type, when the induction voltage of the induction motor 3 is controlled by the inverter device, if the terminal voltage of the capacitor C F rises above a predetermined value when the regenerative power from this motor is received. The transistor TR is turned on, and the accumulated charge in the capacitor C F is reduced to the braking resistance R D.
The electric power is discharged via the resistor and the regenerative electric power is consumed by the resistor to decelerate and brake the induction motor 3.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記の
如き従来の制動方法は、その負荷誘導電動機からの回生
電力を前記の直流中間回路を形成する平滑用のコンデン
サに並列接続された制動抵抗において熱消費させるもの
であり、前記回生電力の全量消費をなし前記電動機に対
する充分な制動と前記直流中間回路の電圧上昇抑制とを
なすためには、前記制動抵抗とその通電制御をなす前記
トランジスタの大容量化とは避けられず、更に放熱対策
に伴う前記インバータ装置の大形化、高価格化もまた避
けられなかった。However, according to the conventional braking method as described above, the regenerative electric power from the load induction motor is heated by the braking resistor connected in parallel with the smoothing capacitor forming the DC intermediate circuit. In order to consume the entire amount of the regenerated electric power and to perform sufficient braking on the electric motor and suppression of the voltage rise of the DC intermediate circuit, the braking resistor and the large capacity of the transistor that controls the energization thereof are used. Inevitably, the size and price of the above-mentioned inverter device are inevitably increased due to heat dissipation measures.
【０００５】上記に鑑みこの発明は、前記の負荷電動機
に対する所要の制動力を保持しながら、前記の制動抵抗
とトランジスタそれぞれの小容量化、場合によってはこ
れら両者を不要となし得る、電圧形インバータ装置によ
るその負荷電動機の制動方法の提供を目的とするもので
ある。In view of the above, the present invention is a voltage source inverter which can reduce the capacity of each of the braking resistor and the transistor while keeping the required braking force for the load motor, and in some cases, does not require both of them. An object of the present invention is to provide a method for braking the load electric motor by the device.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、この発明のインバータ装置による電動機制動方法に
おいては、１）その第一の手段として、電圧形インバー
タ装置により駆動される電動機から前記インバータ装置
の直流中間回路への回生電力の検出器とその検出値を入
力とする関数発生器とを設け、インバータ出力周波数設
定値と所定の比率を以て規定されるインバータ出力電圧
指令値に対してその補正値として前記関数発生器の出力
値を加算し、前記インバータ装置によるその駆動電動機
の制動制御時、前記回生電力の検出値に応じて前記イン
バータ出力電圧指令値の増大を図るものしと、或いは、
２）その第二の手段として、前記第一の手段による電動
機制動方法において、前記回生電力の検出器に代えて、
回生電流の検出器を設けるものとする。In order to achieve the above object, in an electric motor braking method using an inverter device according to the present invention, 1) As a first means, a motor driven by a voltage source inverter device is used to drive the inverter. Provide a detector of regenerative power to the DC intermediate circuit of the device and a function generator that inputs the detected value, and correct the inverter output voltage command value specified by the inverter output frequency set value and a predetermined ratio. The output value of the function generator is added as a value, and the inverter output voltage command value is increased in accordance with the detected value of the regenerative power during braking control of the drive motor by the inverter device, or
2) As the second means, in the motor braking method according to the first means, instead of the regenerative power detector,
A regenerative current detector shall be provided.
【０００７】[0007]
【作用】インバータ装置によるその駆動電動機の制動制
御時に、この電動機はその減速指定量に対応する回転エ
ネルギを電気的或いは機械的エネルギとして、或いはそ
の何れかを介した熱エネルギとして消費することにより
減速する。従って、前記の回転エネルギを前記電動機自
体において消費させることが出来れば、この電動機の減
速を図ることが可能となる。During braking control of the drive motor by the inverter device, the motor decelerates by consuming the rotational energy corresponding to the designated deceleration amount as electric or mechanical energy or as heat energy via either of them. To do. Therefore, if the rotational energy can be consumed in the electric motor itself, the electric motor can be decelerated.
【０００８】この発明は前記の電動機減速時の回転エネ
ルギを、図２に示す制動抵抗ＲD と誘導電動機３自体の
両所において分担消費させるものであり、且つその運転
条件を考慮した熱的許容範囲内において前記電動機内部
消費量の出来るだけの増大を図ることにより、前記制動
抵抗とその通電電流制御用トランジスタとの小容量化を
図るものである。According to the present invention, the rotational energy during deceleration of the electric motor is shared and consumed by both the braking resistor R D shown in FIG. 2 and the induction motor 3 itself, and the thermal allowance is taken into consideration in consideration of its operating conditions. By increasing the internal consumption of the electric motor as much as possible within the range, the capacity of the braking resistor and the energizing current control transistor thereof can be reduced.
【０００９】即ち、電圧形インバータ装置により駆動さ
れる電動機からインバータ直流中間回路への回生電力或
いはこの回生電力に対応する回生電流を検出し、この検
出値を所定の関数関係に従って電圧指令補正値に変換
し、インバータ出力周波数設定値と所定の比率を以て規
定されるインバータ出力電圧指令値に対して前記の電圧
指令補正値を加算し、前記の回生電力或いは回生電流の
大きさに応じて前記電動機への印加電圧をその規定値よ
り増大させてこの電動機を所定の過励磁状態となしてそ
の内部熱損失の増大を図るものである。That is, the regenerative power from the electric motor driven by the voltage source inverter device to the inverter DC intermediate circuit or the regenerative current corresponding to this regenerative power is detected, and this detected value is used as a voltage command correction value according to a predetermined functional relationship. Convert the inverter output frequency setting value and add the voltage command correction value to the inverter output voltage command value specified by a predetermined ratio, and to the motor according to the magnitude of the regenerative power or regenerative current. The applied voltage is increased above the specified value to bring the motor into a predetermined overexcited state to increase the internal heat loss.
【００１０】ここに前記の関数関係は関数発生器により
与えられるものであり、前記の回生電力或いは回生電流
の大きさに応じ、前記電動機の過励磁による内部熱損失
をその熱的許容範囲内において最大となす如く規定する
ものである。Here, the above-mentioned functional relation is given by a function generator, and the internal heat loss due to overexcitation of the electric motor is within a thermal allowable range according to the magnitude of the regenerative power or the regenerative current. It is specified to be maximum.
【００１１】[0011]
【実施例】以下この発明の実施例を図１に例示する回路
図に従って説明する。図１は誘導電動機をその駆動対象
とする電圧形インバータ装置の主回路構成と制御回路構
成の一部を例示するものである。図１に示す如く前記イ
ンバータ装置の主回路構成は、交流電源からの交流入力
整流用の整流部１と、直流中間回路を形成する整流電圧
平滑用のコンデンサＣFと、このコンデンサの端子電圧
をその直流入力電圧とし所要の交流電圧を出力するイン
バータ部２とから成り、誘導電動機３をその負荷となす
ものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the circuit diagram illustrated in FIG. FIG. 1 illustrates a part of a main circuit configuration and a control circuit configuration of a voltage source inverter device that drives an induction motor. As shown in FIG. 1, the main circuit configuration of the inverter device includes a rectifying unit 1 for rectifying an AC input from an AC power source, a rectifying voltage smoothing capacitor C F forming a DC intermediate circuit, and a terminal voltage of the capacitor. The inverter unit 2 outputs the required AC voltage as its DC input voltage, and the induction motor 3 serves as its load.
【００１２】また回生電力検出器５は、前記インバータ
装置の制動制御時、インバータ部２を経由しコンデンサ
ＣF に吸収される誘導電動機３からの回生電力を検出す
るものであり、その検出信号はインバータ制御回路１０
におけるインバータ出力電圧指令値の補正演算用入力信
号をなすものである。ここに、インバータ制御回路１０
は、インバータ出力周波数設定値を指定する周波数設定
器１１と、この設定器による設定値をその最終値とし所
定の時間勾配で増大或いは減少する如く変調された周波
数指令値を出力する加減速設定器１２と、この設定器１
２の出力する前記の変調された周波数指令値に対し所定
の比率を乗じて演算されたインバータ出力電圧指令値を
出力する電圧指令発生器１３と、この出力電圧指令値と
前記の変調された出力周波数指令値とをその入力として
インバータ部２におけるトランジスタ等のスイッチング
素子に対するＰＷＭ指令信号を演算出力するＰＷＭ演算
器１４とを基本構成要素となすものである。The regenerative electric power detector 5 detects regenerative electric power from the induction motor 3 which is absorbed by the capacitor C F via the inverter unit 2 during the braking control of the inverter device, and its detection signal is Inverter control circuit 10
It forms an input signal for correction calculation of the inverter output voltage command value. Here, the inverter control circuit 10
Is a frequency setter 11 that specifies an inverter output frequency set value, and an acceleration / deceleration setter that outputs a frequency command value that is modulated so as to increase or decrease with a predetermined time gradient with the set value by this setter as its final value. 12 and this setting device 1
2. A voltage command generator 13 that outputs an inverter output voltage command value calculated by multiplying the modulated frequency command value output by 2 by a predetermined ratio, and the output voltage command value and the modulated output. The frequency command value and its input are used as a basic constituent element, and a PWM calculator 14 for calculating and outputting a PWM command signal to a switching element such as a transistor in the inverter unit 2.
【００１３】この発明においては更に前記の基本構成要
素に対し、回生電力検出器５の検出信号を入力とし所定
の関数関係に従って変換した電圧指令補正値を出力する
関数発生器１５を設け、この電圧指令補正値を電圧指令
発生器１３の出力信号に加算して得られた信号を以てＰ
ＷＭ演算器１４に印加する指令信号となすものである。In the present invention, a function generator 15 is further provided for the above-mentioned basic constituent elements, which receives the detection signal of the regenerative power detector 5 and outputs a voltage command correction value converted according to a predetermined functional relationship. A signal obtained by adding the command correction value to the output signal of the voltage command generator 13 is used as P
The command signal is applied to the WM calculator 14.
【００１４】従って、前記の新たなインバータ出力電圧
指令値は検出された前記回生電力の大きさに応じ、力行
運転時のインバータ出力電圧に較べてその周波数指令値
に対する比が大となって制動制御時における誘導電動機
３への印加電圧は大となり、この電動機３は所定の過励
磁状態となされてその内部熱損失は増大し、この結果減
速する。Therefore, the new inverter output voltage command value has a larger ratio to the frequency command value than the inverter output voltage during the power running operation in accordance with the detected magnitude of the regenerative power, and the braking control is performed. At this time, the voltage applied to the induction motor 3 becomes large, the motor 3 is brought into a predetermined overexcitation state, the internal heat loss thereof increases, and as a result, the speed is reduced.
【００１５】ここに関数発生器１５は、前記回生電力の
大きさに応じ、前記電動機の過励磁による内部熱損失を
この電動機の熱的許容範囲内において最大となす如く、
前記回生電力の検出値と前記電圧指令補正値間の関数関
係を規定するものである。なお前記の回生電力検出器に
代えて回生電流検出器を設け、関数発生器１５を回生電
流検出値に関するものに変更することにより、前記と同
様の制動制御を行うことが可能となる。Here, the function generator 15 is designed to maximize the internal heat loss due to overexcitation of the electric motor within the thermal allowable range of the electric motor according to the magnitude of the regenerative electric power.
It defines a functional relationship between the detected value of the regenerative power and the voltage command correction value. By providing a regenerative current detector in place of the regenerative power detector and changing the function generator 15 to one related to the regenerative current detection value, the same braking control as described above can be performed.
【００１６】[0016]
【発明の効果】この発明によれば、電圧形インバータ装
置によるその駆動電動機の制動方法として、前記電動機
からインバータ直流中間回路への回生電力又は回生電流
の検出器とこの検出器の検出値を入力とする関数発生器
とを設け、インバータ出力周波数設定値と所定の比率を
以て規定されるインバータ出力電圧指令値に対する補正
値として前記関数発生器の出力値を加算し、前記インバ
ータ装置によるその駆動電動機の制動制御時に、前記の
回生電力或いは回生電流の検出値に応じ前記インバータ
出力電圧指令値の増大による前記駆動電動機の過励磁を
行うことにより、所要の制動力を保持しながら、汎用の
電圧形インバータに対する従来の制動方法に従う制動抵
抗とその通電制御用スイッチング素子それぞれの小容量
化、場合によってはこれら両者を不要となすことが可能
となり、前記インバータ装置の小形低廉化が可能とな
る。According to the present invention, as a method of braking a driving electric motor by a voltage source inverter device, a detector of regenerative electric power or regenerative current from the electric motor to an inverter DC intermediate circuit and a detection value of this detector are input. And a function generator provided, and the output value of the function generator is added as a correction value for the inverter output voltage command value specified by the inverter output frequency set value and a predetermined ratio, and the drive motor of the inverter device is added. During braking control, by overexciting the drive motor by increasing the inverter output voltage command value according to the detected value of the regenerative electric power or regenerative current, a general-purpose voltage source inverter while maintaining a required braking force. In accordance with the conventional braking method for the It is possible to make them both unnecessary and small cost reduction of the inverter apparatus can be achieved.
【図１】この発明の実施例を示す電圧形インバータ装置
全体の回路図FIG. 1 is a circuit diagram of an entire voltage source inverter device showing an embodiment of the present invention.
【図２】従来技術の実施例を示す電圧形インバータ装置
主回路の回路図FIG. 2 is a circuit diagram of a main circuit of a voltage type inverter device showing an embodiment of the prior art.
１ 整流部 ２ インバータ部 ３ 誘導電動機 ５ 回生電力検出器 １０ インバータ制御回路 １１ 周波数設定器 １２ 加減速設定器 １３ 電圧指令発生器 １４ ＰＷＭ演算器 １５ 関数発生器 ＣF 平滑用コンデンサ ＲD 制動抵抗 ＴＲ トランジスタ1 Rectifier 2 Inverter 3 Induction motor 5 Regenerative power detector 10 Inverter control circuit 11 Frequency setting device 12 Acceleration / deceleration setting device 13 Voltage command generator 14 PWM calculator 15 Function generator C F Smoothing capacitor R D Braking resistance TR Transistor
Claims (2)
機の制動方法であって、前記電動機からインバータ直流
中間回路への回生電力の検出器とこの検出器の検出値を
入力とする関数発生器とを設け、インバータ出力周波数
設定値と所定の比率を以て規定されるインバータ出力電
圧指令値に対しその補正値として前記関数発生器の出力
値を加算し、前記インバータ装置によるその駆動電動機
の制動制御時に、前記回生電力の検出値に応じて前記イ
ンバータ出力電圧指令値の増大を図ることを特徴とする
インバータ装置による電動機制動方法。1. A method of braking a driving electric motor thereof by a voltage source inverter device, comprising: a detector of regenerative electric power from the electric motor to an inverter DC intermediate circuit; and a function generator having a detected value of the detector as an input. The output value of the function generator is added as a correction value to the inverter output voltage command value defined by the inverter output frequency set value and a predetermined ratio, and when the braking control of the drive motor by the inverter device is performed, A method of braking a motor by an inverter device, wherein the inverter output voltage command value is increased according to a detected value of regenerative power.
機制動方法において、前記回生電力の検出器に代えて、
回生電流の検出器を設けたことを特徴とするインバータ
装置による電動機制動方法。2. A method of braking a motor by an inverter device according to claim 1, wherein the detector for the regenerative power is replaced by
A method of braking a motor by an inverter device, which is provided with a detector for a regenerative current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14662893A JP3227908B2 (en) | 1993-06-18 | 1993-06-18 | Motor braking method by inverter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14662893A JP3227908B2 (en) | 1993-06-18 | 1993-06-18 | Motor braking method by inverter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH077981A true JPH077981A (en) | 1995-01-10 |
| JP3227908B2 JP3227908B2 (en) | 2001-11-12 |
Family
ID=15412037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14662893A Expired - Lifetime JP3227908B2 (en) | 1993-06-18 | 1993-06-18 | Motor braking method by inverter device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3227908B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005096489A1 (en) * | 2004-03-31 | 2005-10-13 | Kabushiki Kaisha Yaskawa Denki | Ac motor decelerating method and inverter |
| WO2006004037A1 (en) * | 2004-07-06 | 2006-01-12 | Kabushiki Kaisha Yaskawa Denki | Inverter device, and speed reducing method for ac electric motor |
| JP2008005688A (en) * | 2006-05-23 | 2008-01-10 | Fuji Electric Systems Co Ltd | Variable speed driver of induction motor |
| EP2506423A2 (en) | 2011-03-30 | 2012-10-03 | Hitachi Industrial Equipment Systems Co., Ltd. | Power Converting Device |
| WO2014141527A1 (en) * | 2013-03-12 | 2014-09-18 | 三菱電機株式会社 | Motor control device |
| JP2018061394A (en) * | 2016-10-07 | 2018-04-12 | 富士電機株式会社 | Power conversion device and power conversion system |
-
1993
- 1993-06-18 JP JP14662893A patent/JP3227908B2/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005096489A1 (en) * | 2004-03-31 | 2005-10-13 | Kabushiki Kaisha Yaskawa Denki | Ac motor decelerating method and inverter |
| GB2430317A (en) * | 2004-03-31 | 2007-03-21 | Yaskawa Denki Seisakusho Kk | AC motor decelerating method and inverter |
| GB2430317B (en) * | 2004-03-31 | 2008-01-30 | Yaskawa Denki Seisakusho Kk | Method of decelerating alternating current motor and inverter apparatus |
| US7800338B2 (en) | 2004-03-31 | 2010-09-21 | Kabushiki Kaisha Yaskawa Denki | Method of decelerating alternating current motor and inverter apparatus |
| WO2006004037A1 (en) * | 2004-07-06 | 2006-01-12 | Kabushiki Kaisha Yaskawa Denki | Inverter device, and speed reducing method for ac electric motor |
| US7612518B2 (en) | 2004-07-06 | 2009-11-03 | Kabushiki Kaisha Yaskawa Denki | Inverter apparatus and method of reducing speed of alternating current motor |
| JP2008005688A (en) * | 2006-05-23 | 2008-01-10 | Fuji Electric Systems Co Ltd | Variable speed driver of induction motor |
| CN102739128A (en) * | 2011-03-30 | 2012-10-17 | 株式会社日立产机*** | Power converting device |
| EP2506423A2 (en) | 2011-03-30 | 2012-10-03 | Hitachi Industrial Equipment Systems Co., Ltd. | Power Converting Device |
| JP2012217317A (en) * | 2011-03-30 | 2012-11-08 | Hitachi Industrial Equipment Systems Co Ltd | Power conversion system |
| EP2506423A3 (en) * | 2011-03-30 | 2015-10-28 | Hitachi Industrial Equipment Systems Co., Ltd. | Power Converting Device |
| WO2014141527A1 (en) * | 2013-03-12 | 2014-09-18 | 三菱電機株式会社 | Motor control device |
| JP5932136B2 (en) * | 2013-03-12 | 2016-06-08 | 三菱電機株式会社 | Motor control device |
| JPWO2014141527A1 (en) * | 2013-03-12 | 2017-02-16 | 三菱電機株式会社 | Motor control device |
| US9614467B2 (en) | 2013-03-12 | 2017-04-04 | Mitsubishi Electric Corporation | Motor control device |
| JP2018061394A (en) * | 2016-10-07 | 2018-04-12 | 富士電機株式会社 | Power conversion device and power conversion system |
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|---|---|
| JP3227908B2 (en) | 2001-11-12 |
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