JPS63110987A - Motor controller - Google Patents
Motor controllerInfo
- Publication number
- JPS63110987A JPS63110987A JP25383286A JP25383286A JPS63110987A JP S63110987 A JPS63110987 A JP S63110987A JP 25383286 A JP25383286 A JP 25383286A JP 25383286 A JP25383286 A JP 25383286A JP S63110987 A JPS63110987 A JP S63110987A
- Authority
- JP
- Japan
- Prior art keywords
- regenerative
- regenerative power
- deceleration rate
- control circuit
- acceleration
- 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
- 230000001172 regenerating effect Effects 0.000 claims abstract description 83
- 230000001133 acceleration Effects 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Landscapes
- Stopping Of Electric Motors (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は電動機制御装置に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a motor control device.
（従来の技術）
従来、電動機力行運転時に、カ行電力は変換部および逆
変換部より電動機に供給されている。又、電動機回生運
転時に、回生電力は電動機から逆変換部を経て回生され
、検出電圧が上昇する。この電圧を電圧検出器により検
出した検出出力により、回生電力通電スイッチを導通さ
せ、回生電力を回生抵抗器で消費させている０回生電力
の尖頭値は、電動機の負荷のＧＤ”および減速開始時の
電動機の運転速度が一定であれば、速度設定基の出力に
加減速レートを与える加減速レート制御回路の減速レー
トによって決まり、回生抵抗器の容量および回生電力通
電スイッチの定格は負荷ＧＤ”および減速開始時の電動
機運転速度および減速レートによって予め設定されてい
る。そして、逆変換部制御回路は加減速レート制御回路
の出力通りに電動機を運転するために逆変換部を制御す
る回路となっている。(Prior Art) Conventionally, during power running of an electric motor, power is supplied to the electric motor from a conversion section and an inverse conversion section. Furthermore, during regenerative motor operation, regenerated power is regenerated from the motor through the inverse conversion section, and the detected voltage increases. This voltage is detected by a voltage detector and the detection output turns on the regenerative power energization switch, causing the regenerative power to be consumed by the regenerative resistor. If the operating speed of the motor is constant, the deceleration rate is determined by the acceleration/deceleration rate control circuit that gives the acceleration/deceleration rate to the output of the speed setting base, and the capacity of the regenerative resistor and the rating of the regenerative power energization switch are determined by the load GD. and the motor operating speed and deceleration rate at the start of deceleration. The inverse converter control circuit is a circuit that controls the inverse converter in order to operate the electric motor according to the output of the acceleration/deceleration rate control circuit.
（発明が解決しようとする問題点）
前記のように、回生電力尖頭値は、電動機の負荷ＧＤ”
および減速開始時運転速度および減速レートによって定
まり、この大きさにより回生抵抗器および回生電力通電
スイッチの定格を決定することが重要であるが、何らか
の原因により、負荷ＧＤ” が増大または、減速開始時
運転速度が増大した場合、回生電力尖頭値が上昇し１回
生電力通電スイッチの破損または１回生抵抗器の過負荷
を発生させる憾みがある。(Problem to be solved by the invention) As mentioned above, the peak value of regenerative power is equal to the load GD of the motor.
It is determined by the operating speed and deceleration rate at the start of deceleration, and it is important to determine the rating of the regenerative resistor and regenerative power energization switch based on this size. When the operating speed increases, the peak value of the regenerative power increases, which may cause damage to the primary regenerative power switch or overload of the primary regenerative resistor.
本発明は、前記のような点に鑑みてなされたもので１回
生運転時負荷ＧＤ”増大または減速開始時運転速度が増
大しても、回生電力通電スイッチの破損または回生抵抗
器の過負荷を発生させない電動機制御装置を提供するこ
とを目的とする。The present invention has been made in view of the above points, and even if the load GD" increases during regenerative operation or the operating speed increases at the start of deceleration, damage to the regenerative power energization switch or overload of the regenerative resistor can be avoided. It is an object of the present invention to provide a motor control device that does not generate electricity.
（問題点を解決するための手段）
上記目的を達成するために、本発明においては、電動機
にカ行電力を供給する変換部および逆変換部と５回生運
転時、逆変換部より供給される回生電力を消費する回生
抵抗器と、回生電力を電圧により検出する電圧検出器と
、電圧検出器の検出出力により回生電力を回生抵抗器に
通電させる回生電力通電スイッチと、電動機に速度基準
を与える速度設定器と、速度設定器の出力に加減速レー
トを与える加減速レート制御回路と加減速レート制御回
路の出力により逆変換部を制御する逆変換部制御回路よ
りなる電動機制御装置において１回生電力が回生抵抗器
または回生電力通電スイッチの定格を超えたことを、回
生電圧が規定値を超えたことにより検出する定格電圧検
出器と、定格電圧検出器の出力を増幅し、減速レート切
換信号を、前記加減速レート制御回路に与える増幅器を
具備！ることを特徴とする電動機制御装置を提供する。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a conversion section and an inverse conversion section that supply power to the electric motor, and a A regenerative resistor that consumes regenerative power, a voltage detector that detects the regenerative power by voltage, a regenerative power energization switch that energizes the regenerative resistor with the regenerative power based on the detection output of the voltage detector, and a speed reference that is provided to the motor. One regenerative power is generated in a motor control device consisting of a speed setter, an acceleration/deceleration rate control circuit that gives an acceleration/deceleration rate to the output of the speed setter, and an inverse conversion unit control circuit that controls an inverse conversion unit using the output of the acceleration/deceleration rate control circuit. A rated voltage detector detects that the regenerative voltage exceeds the rating of the regenerative resistor or regenerative power switch by amplifying the output of the rated voltage detector and outputs a deceleration rate switching signal. , equipped with an amplifier to feed the acceleration/deceleration rate control circuit! An electric motor control device is provided.
（作用）
このように構成された装置においては、負荷ＧＤｔおよ
び減速開始時運転速度が増大方向に変動した場合１回生
電力尖頭値が１回生抵抗器または回生電力通電スイッチ
の定格を超えようとしたことを、定格電圧検出器により
検出し、増幅器を通して加減速レート制御回路の減速レ
ートを下げるため、回生電力尖頭値が回生抵抗器または
１回生電力通電スイッチの定格を超えることなく電動機
の減速を行なうことが可能となる。(Function) In a device configured as described above, when the load GDt and the operating speed at the start of deceleration fluctuate in the increasing direction, the peak value of the first regenerative power will exceed the rating of the first regenerative resistor or the regenerative power energization switch. This is detected by the rated voltage detector, and the deceleration rate of the acceleration/deceleration rate control circuit is reduced through the amplifier, so that the motor is decelerated without the peak value of the regenerative power exceeding the rating of the regenerative resistor or the single regenerative power energization switch. It becomes possible to do this.
（実施例） 以下本発明の一実施例を図面を参照し説明する。(Example) An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing one embodiment of the present invention.
１は変換部、２は逆変換部、３は電動機。1 is a conversion section, 2 is an inverse conversion section, and 3 is an electric motor.
４は回生電力通電スイッチ、５は回生抵抗器、６は電圧
検出器、７は速度設定器、８は加減速レート制御回路、
９は逆変換部制御回路である。 １０は回生電力ピーク
値Ｐａが回生電力通電スイッチ４または回生抵抗器５の
定格を超えたことを電圧検出点ａの電圧により検出する
定格電圧検出器、１１は定格電圧検出器ｌＯの出力を増
幅し、減速レート切換信号Ｓを加減速レート制御回路８
に出方する増幅器である。電動機力行運転時にカ行電力
は変換部１および逆変換部２を経て電動機３に供給され
る。１ａ動機回生運転時は、回生電力は、電動機３から
逆変換部２を経て回生され、電圧検出点ａの電圧が上昇
する。この電圧を電圧検出器６により検出した検出出力
により１回生電力通電スイッチ４を導通させ１回生電力
を回生抵抗器５で消費させる。？！！動機３の運転速度
基準は、速度設定器７より供給され、加減速レート制御
回路８により加減速レートを設定された後、逆変換部制
御回路９に入力され、逆変換部制御回路９の出力により
逆変換部２が制御されることにより電動Ｉａ３は速度制
御される。一方、何らかの原因で電動機３の図示しない
負荷のＧＤ”または減速開始時に運転速度が増大し、回
生電力ピーク値Ｐａが１回生電力通電スイッチ４または
回生抵抗器７の定格を超えようとした場合、定格電圧検
出器１０により電圧検出点ａの電圧を検出することによ
りこれを検知する。4 is a regenerative power switch, 5 is a regenerative resistor, 6 is a voltage detector, 7 is a speed setting device, 8 is an acceleration/deceleration rate control circuit,
9 is an inverse conversion unit control circuit. 10 is a rated voltage detector that detects, by the voltage at voltage detection point a, that the regenerative power peak value Pa exceeds the rating of the regenerative power energization switch 4 or regenerative resistor 5; 11 is a rated voltage detector that amplifies the output of the rated voltage detector lO; Then, the deceleration rate switching signal S is sent to the acceleration/deceleration rate control circuit 8.
This is an amplifier that appears in When the electric motor is running, power is supplied to the electric motor 3 via the converter 1 and the inverse converter 2. During regenerative operation of the motor 1a, regenerated power is regenerated from the electric motor 3 via the inverse converter 2, and the voltage at the voltage detection point a increases. This voltage is detected by the voltage detector 6 and the detection output causes the first regenerative power supply switch 4 to conduct, causing the first regenerative power to be consumed by the regenerative resistor 5. ? ! ! The operating speed reference for the motive 3 is supplied from the speed setter 7, and after the acceleration/deceleration rate is set by the acceleration/deceleration rate control circuit 8, it is input to the inverse converter control circuit 9, and the output of the inverse converter control circuit 9 is inputted to the inverse converter control circuit 9. By controlling the inverse converter 2, the speed of the electric motor Ia3 is controlled. On the other hand, if for some reason the operating speed increases at the start of deceleration or GD of the load (not shown) of the electric motor 3, and the regenerative power peak value Pa attempts to exceed the rating of the first regenerative power energization switch 4 or the regenerative resistor 7, This is detected by detecting the voltage at the voltage detection point a using the rated voltage detector 10.
この検知出力を増幅器１１で増幅し、減速レート切換信
号Ｓとして加減速レート制御回路８に入力し、減速レー
トを下げることにより電動機３の減速レートがゆるやか
となり回生電力ピーク値Ｐａが回生電力通電スイッチま
たは回生抵抗器５の定格を超えることを押さえるよう電
動機３が減速運転されることになる。This detection output is amplified by the amplifier 11 and inputted as the deceleration rate switching signal S to the acceleration/deceleration rate control circuit 8. By lowering the deceleration rate, the deceleration rate of the motor 3 becomes gentler and the regenerative power peak value Pa becomes the regenerative power energization switch. Alternatively, the electric motor 3 is operated at a reduced speed so as to prevent the rating of the regenerative resistor 5 from being exceeded.
第２図は１本発明の電動機制御装置による回生電力の特
性を示す特性図である。 １２．１４はそれぞれ１回生
電力ピーク値Ｐａが回生電力通電スイッチ定格Ｐ８また
は回生抵抗器定格ＰＲを超える場合の減速パターン１お
よび回生型カバターン１．１３．１５はそれぞれ回生電
力ピーク値Ｐａ’が回生電力通電スイッチ定格Ｐ３また
は回生抵抗器定格ＰＲを超えないよう本発明により、減
速終了点を点すから点Ｃになるよう減速レートをゆるや
かにした場合の、減速パターンｌおよび回生型カバター
ン２である。FIG. 2 is a characteristic diagram showing the characteristics of regenerated power by the motor control device of the present invention. 12.14 is the deceleration pattern 1 and regenerative cover turn when the regenerative power peak value Pa exceeds the regenerative power energization switch rating P8 or the regenerative resistor rating PR, respectively.13.15 is the regenerative power peak value Pa' These are deceleration pattern 1 and regenerative cover turn 2 when the deceleration rate is made gentle so that the deceleration end point reaches point C according to the present invention so as not to exceed the power supply switch rating P3 or the regenerative resistor rating PR. .
以上述べてきたように本発明によれば何らかの原因によ
り電動機の負荷ＧＤ”または減速開始時運転速度が増大
の方向へ変動し、減速時の回生電力ピーク値が回生電力
通電スイッチまたは回生抵抗器の定格を超える方向に増
大しようとした場合。As described above, according to the present invention, if the load GD of the motor or the operating speed at the start of deceleration fluctuates in the direction of increase due to some reason, the peak value of regenerative power at the time of deceleration increases due to the regenerative power energization switch or the regenerative resistor. If an attempt is made to increase in a direction that exceeds the rating.
この回生電力ピーク値の増大を回生電力通電スイッチお
よび回生抵抗器の定格以下に抑制することができ、回生
電力通電スイッチの破損、または、回生抵抗器の過負荷
を防ぐことができる。This increase in the regenerative power peak value can be suppressed to below the ratings of the regenerative power energizing switch and the regenerative resistor, and damage to the regenerative power energizing switch or overloading of the regenerative resistor can be prevented.
第１図は本発明の一実施例を説明する制御装置のブロッ
ク構成図、第２図は第１図の回生電力の特性を示す特性
説明図である。
１・・・変換部 ２・・・逆変換部３・・
・電動機 ４・・・回生電力通電スイッチ５・・
・回生抵抗器 ６・・・電圧検出器７・・・速
度設定器 ８・・・加減速レート制御回路９・・・逆
変換部制御回路 １０・・・定格電圧検出器１１・・
・ＨａＭ＠ １２・・・減速パターン１
１３・・・減速パターン２
１４・・・回生型カバターン１
１５・・・回生型カバターン２
代理人 弁理士 則 近 憲 佑
同 三俣弘文
第１図
第２図FIG. 1 is a block diagram of a control device illustrating an embodiment of the present invention, and FIG. 2 is a characteristic explanatory diagram showing the characteristics of the regenerated power shown in FIG. 1. 1... Conversion section 2... Inverse conversion section 3...
・Electric motor 4... Regenerative power energization switch 5...
・Regenerative resistor 6... Voltage detector 7... Speed setter 8... Acceleration/deceleration rate control circuit 9... Inverse conversion section control circuit 10... Rated voltage detector 11...
・HaM@12...Deceleration pattern 1
13...Deceleration pattern 2 14...Regenerative type cover turn 1 15...Regenerative type cover turn 2 Agent Patent attorney Noriyuki Chika Yudo Hirofumi MitsumataFigure 1Figure 2
Claims (1)
回生運転時に前記逆変換部より供給される回生電力を消
費する回生抵抗器と、前記回生電力を電圧により検出す
る電圧検出器と、この電圧検出器の検出出力により、前
記回生電力を前記回生抵抗器に通電させる回生電力通電
スイッチと、前記電動機に速度基準を与える速度設定器
と、前記速度設定器の出力に加減速レートを与える加減
速レート制御回路と、前記加減速レート制御回路の出力
により前記逆変換部を制御する逆変換部と、制御回路よ
りなる電動機制御装置において、前記回生電力が前記回
生抵抗器または前記回生電力通電スイッチの定格を超え
たことを回生電圧が規定値を超えたことにより検出する
定格電圧検出器と、この定格電圧検出器の出力を増幅し
て減速レート切換信号を前記加減速レート制御回路に与
える増幅器とを具備することを特徴とする電動機制御装
置。a conversion unit and an inverse conversion unit that supply power to the electric motor;
A regenerative resistor that consumes the regenerative power supplied from the inverse converter during regenerative operation, a voltage detector that detects the regenerative power by voltage, and a detection output of this voltage detector that connects the regenerative power to the regenerative resistor. a regenerative power energization switch that energizes the motor, a speed setter that provides a speed reference to the motor, an acceleration/deceleration rate control circuit that provides an acceleration/deceleration rate to the output of the speed setter, and an output of the acceleration/deceleration rate control circuit. In a motor control device comprising an inverse conversion unit that controls the inverse conversion unit and a control circuit, the regenerative voltage exceeds a specified value when the regenerative power exceeds the rating of the regenerative resistor or the regenerative power energization switch. 1. A motor control device comprising: a rated voltage detector for detecting the rated voltage; and an amplifier that amplifies the output of the rated voltage detector and provides a deceleration rate switching signal to the acceleration/deceleration rate control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25383286A JPS63110987A (en) | 1986-10-27 | 1986-10-27 | Motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25383286A JPS63110987A (en) | 1986-10-27 | 1986-10-27 | Motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63110987A true JPS63110987A (en) | 1988-05-16 |
Family
ID=17256753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25383286A Pending JPS63110987A (en) | 1986-10-27 | 1986-10-27 | Motor controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63110987A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008193895A (en) * | 2008-03-18 | 2008-08-21 | Yaskawa Electric Corp | Method for detecting excess voltage of dc power supply and protecting circuit |
| US20190119079A1 (en) * | 2016-05-20 | 2019-04-25 | Konecranes Global Corporation | Lifting device and method for operating a lifting device |
-
1986
- 1986-10-27 JP JP25383286A patent/JPS63110987A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008193895A (en) * | 2008-03-18 | 2008-08-21 | Yaskawa Electric Corp | Method for detecting excess voltage of dc power supply and protecting circuit |
| US20190119079A1 (en) * | 2016-05-20 | 2019-04-25 | Konecranes Global Corporation | Lifting device and method for operating a lifting device |
| US11046559B2 (en) * | 2016-05-20 | 2021-06-29 | Konecranes Global Corporation | Lifting device and method for operating a lifting device |
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