JPH033479B2 - - Google Patents
Info
- Publication number
- JPH033479B2 JPH033479B2 JP59042908A JP4290884A JPH033479B2 JP H033479 B2 JPH033479 B2 JP H033479B2 JP 59042908 A JP59042908 A JP 59042908A JP 4290884 A JP4290884 A JP 4290884A JP H033479 B2 JPH033479 B2 JP H033479B2
- Authority
- JP
- Japan
- Prior art keywords
- motor
- individual
- vector
- average vector
- motors
- 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.)
- Expired - Lifetime
Links
- 239000013598 vector Substances 0.000 claims description 27
- 238000012806 monitoring device Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more AC dynamo-electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は多数台電動機特に高周波電源によつて
駆動されるヒステリシス電動機に適する運転状態
の監視装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an operating state monitoring device suitable for multiple electric motors, particularly hysteresis motors driven by a high frequency power source.
多数台電動機の監視装置としては従来第１図に
示す装置が第１図において１は電源、２は力率改
善用フイルタ、３は多数台電動機に流れる電流の
平均ベクトルを検出する検出器、４−１〜４−ｎ
は各電動機に流れる電流の個別ベクトルを検出す
る検出器、５−１〜５−ｎは監視対象である電動
機、６および７は電動機の運転台数変化に伴う平
均ベクトル補正用の抵抗器、切替スイツチ８−１
〜８−ｎは電動機の開閉スイツチである。従来例
において各電動機の運転状態を監視する場合、３
の検出器、６の抵抗器で検出される平均ベクトル
V〓と４−１〜４−ｎの検出器で検出される個別ベ
クトルV〓1〜V〓oを比較する方法がとられていた。
この従来の方法では運転台数の変化に伴う、平均
ベクトルの変化を６の抵抗器および７の切換えス
イツチで補正する必要があつた。また、３の平均
ベクトルを検出する検出器と４−１〜４−ｎの個
別ベクトルを検出する検出器は容量、種類が異な
る為に位相特性の相違による監視誤差を生じ易い
という欠点があつた。
As a conventional monitoring device for multiple electric motors, the device shown in FIG. -1~4-n
5-1 to 5-n are the motors to be monitored; 6 and 7 are resistors and changeover switches for correcting the average vector as the number of operating motors changes. 8-1
-8-n are electric motor open/close switches. In the conventional example, when monitoring the operating status of each electric motor, 3
Detector, average vector detected by 6 resistors
A method was used to compare V〓 with the individual vectors V〓 1 to V〓 o detected by the detectors 4-1 to 4-n.
In this conventional method, it was necessary to correct the change in the average vector due to the change in the number of operating vehicles using resistor 6 and changeover switch 7. In addition, since the detector that detects the average vector of 3 and the detector that detects the individual vectors of 4-1 to 4-n have different capacities and types, there is a drawback that monitoring errors are likely to occur due to differences in phase characteristics. .
本発明は上記事情に鑑みてなされたもので、正
常、異常の判別を早期に、かつ正確に判別するこ
とのできる多数台電動機監視装置を得ることを目
的とするものである。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a multi-motor monitoring device that can quickly and accurately determine whether a motor is normal or abnormal.
本発明は、この目的を達成するために、各個別
ベクトル検出器の出力をそれぞれ抵抗器とスイツ
チを介して並列合成して平均ベクトルを得るよう
にし、しかも前記スイツチを電動機を電源から切
り離すスイツチと連動させることにより運転台数
の変化に伴う平均ベクトルの補正を自動的に行な
うようにしたものである。
In order to achieve this object, the present invention combines the outputs of each individual vector detector in parallel via resistors and switches to obtain an average vector, and furthermore, the switches are configured to be a switch for disconnecting the motor from the power supply. By interlocking, the average vector is automatically corrected as the number of operating vehicles changes.
第２図に本発明の構成例を示す。第２図におい
て８−１ａ〜８−naは８−１〜８−ｎの電動機
開閉スイツチと連動するスイツチ、９−１〜９−
ｎは抵抗器である。第２図において各電動機に対
する個別ベクトルをV〓1，V〓2，…，V〓nとする。
FIG. 2 shows an example of the configuration of the present invention. In FIG. 2, 8-1a to 8-na are switches 9-1 to 9-n that operate in conjunction with the motor open/close switches 8-1 to 8-n.
n is a resistor. In FIG. 2, let the individual vectors for each motor be V〓 1 , V〓 2 , ..., V〓n.
ここでV〓2＝V〓3＝…＝V〓n＝V〓0またV〓1＝V〓0＋
ΔV〓
とすれば平均ベクトルV〓aは
V〓a＝（ｎ−１）V¨0＋V¨0＋ΔV¨／ｎ＝V〓0＋１
／ｎΔV〓
…(1)
また９−１〜９−ｎの抵抗器の抵抗値をＲ（Ω）
とすれば
V〓a＝（V¨0＋ΔV¨）−V¨0／nRＲ＋V〓0＝V〓0＋
１／ｎΔV〓
…(2)
(1)式と(2)式が相、等しいことから各電動機に流
れる電流の個別ベクトルどうしを抵抗器９−１〜
９−ｎを介して並列合成すれば多数台電動機に流
れる電流の平均ベクトルが得られることが解か
る。 Here, V〓 2 =V〓 3 =…=V〓n=V〓 0Also , V〓 1 =V〓 0 +
ΔV〓
Then, the average vector V〓a is V〓a=(n-1)V¨ 0 +V¨ 0 +ΔV¨/n=V〓 0 +1
/nΔV〓 …(1) Also, the resistance value of the resistors 9-1 to 9-n is R (Ω)
Then, V〓a=(V¨ 0 +ΔV¨)−V¨ 0 /nRR+V〓 0 =V〓 0 +
1/nΔV〓 ...(2) Since equations (1) and (2) are equal in phase, the individual vectors of the current flowing through each motor are connected to each other by resistors 9-1~
It can be seen that if parallel synthesis is performed via 9-n, an average vector of currents flowing through multiple motors can be obtained.
また、８−１〜８−ｎの電動機開閉スイツチと
連動するスイツチ８−１ａ〜８−naにより、停
止中の電動機の個別ベクトルの合成は切離される
ため、電動機の運転台数変化に伴う平均ベクトル
の補正は自動的に行なわれる。 In addition, since the combination of individual vectors of stopped motors is separated by the switches 8-1a to 8-na that are linked to the motor open/close switches 8-1 to 8-n, the average vector due to the change in the number of operating motors is The correction will be made automatically.
本発明によれば従来例で述べた運転台数の変化
に対する平均ベクトルの補正操作が不要になると
ともに、平均ベクトル検出器が不要になる。ま
た、平均ベクトルも個別ベクトル検出器から得る
ので、検出器の位相特性相違による監視誤差がな
くなる。
According to the present invention, the average vector correction operation for changes in the number of operating vehicles as described in the conventional example becomes unnecessary, and the average vector detector becomes unnecessary. Furthermore, since the average vector is also obtained from the individual vector detectors, monitoring errors due to differences in phase characteristics of the detectors are eliminated.
第１図は従来の多数台電動機監視装置の構成
図、第２図は本発明による多数台電動機監視装置
の構成図である。
１…電源、２…力率改善用フイルタ、３…平均
ベクトル検出器、４−１〜４−ｎ…個別ベクトル
検出器、５−１〜５−ｎ…電動機、６…抵抗器、
７…切換スイツチ、８−１〜８−ｎ…電動機開閉
スイツチ、９−１〜９−ｎ…抵抗器。
FIG. 1 is a block diagram of a conventional multi-motor monitoring device, and FIG. 2 is a block diagram of a multi-motor monitoring device according to the present invention. DESCRIPTION OF SYMBOLS 1... Power supply, 2... Power factor improvement filter, 3... Average vector detector, 4-1 to 4-n... Individual vector detector, 5-1 to 5-n... Electric motor, 6... Resistor,
7... Changeover switch, 8-1 to 8-n... Motor opening/closing switch, 9-1 to 9-n... Resistor.
Claims (1)
から付勢される多数台電動機に流れる電流の平均
ベクトルと、各電動機に流れる電流の個別ベクト
ルの差の大小により各電動機の運転状態の正常、
異常を判別する多数台電動機の監視装置におい
て、各電動機の電流の個別ベクトルを得るために
各電動機に設けられる個別ベクトル検出器と、前
記各個別ベクトル検出器の出力をそれぞれ抵抗器
と前記第１のスイツチに連動する第２のスイツチ
を介して並列合成する平均ベクトル検出手段とか
ら成る多数台電動機の監視装置。1. The normal operating state of each motor is determined by the difference between the average vector of currents flowing through multiple motors energized from a common power supply via the first switch and the individual vectors of currents flowing through each motor.
In a monitoring device for multiple electric motors that determines an abnormality, an individual vector detector is provided for each electric motor to obtain an individual vector of current of each electric motor, and the output of each of the individual vector detectors is connected to a resistor and the first electric motor. A monitoring device for a large number of electric motors, comprising an average vector detecting means for performing parallel synthesis via a second switch linked to a second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59042908A JPS60190196A (en) | 1984-03-08 | 1984-03-08 | Monitor for plurality of motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59042908A JPS60190196A (en) | 1984-03-08 | 1984-03-08 | Monitor for plurality of motors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60190196A JPS60190196A (en) | 1985-09-27 |
| JPH033479B2 true JPH033479B2 (en) | 1991-01-18 |
Family
ID=12649128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59042908A Granted JPS60190196A (en) | 1984-03-08 | 1984-03-08 | Monitor for plurality of motors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60190196A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5144315B2 (en) * | 2008-03-11 | 2013-02-13 | パナソニック株式会社 | Drive circuit for brushless DC motor |
-
1984
- 1984-03-08 JP JP59042908A patent/JPS60190196A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60190196A (en) | 1985-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |