JPH04291A - Motor cooler - Google Patents
Motor coolerInfo
- Publication number
- JPH04291A JPH04291A JP2099233A JP9923390A JPH04291A JP H04291 A JPH04291 A JP H04291A JP 2099233 A JP2099233 A JP 2099233A JP 9923390 A JP9923390 A JP 9923390A JP H04291 A JPH04291 A JP H04291A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- temperature
- rotation
- cooling
- exhaust
- 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
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000020169 heat generation Effects 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は産業機械を駆動する電動機の冷却装置に関する
。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a cooling device for an electric motor that drives an industrial machine.
（従来の技術）
従来の電動機冷却装置は第４図に示すように、産業機械
を駆動する作業用電動機１は給気口と排気口を備え、そ
れぞれに接続された給気側通風管２、排気側通風管３を
通して通風されて冷却される。給気側通風管２に設置さ
れた冷却ファン４はファン用電動機５で駆動される。フ
ァン用電動機５は定速駆動機１０で定格回転数に一定に
駆動され、作業用電動機１は定格の風量で一定に冷却さ
れていた。(Prior Art) As shown in FIG. 4, a conventional electric motor cooling device is such that a working electric motor 1 that drives an industrial machine has an air supply port and an exhaust port, and an air supply side ventilation pipe 2 connected to each of the air supply ports and an exhaust port. It is ventilated through the exhaust side ventilation pipe 3 and is cooled. A cooling fan 4 installed in the air supply side ventilation pipe 2 is driven by a fan electric motor 5. The fan electric motor 5 was driven at a constant rated rotation speed by a constant speed drive machine 10, and the working electric motor 1 was constantly cooled at the rated air volume.
しかしながら、上記の従来の冷却装置にあっては定格の
風量で一定に冷却していたため、電力を浪費していた。However, in the above-mentioned conventional cooling device, electric power was wasted because cooling was performed at a constant rate with a rated air volume.
（発明が解決しようとする課題）
上述したように従来の電動機冷却装置では作業用電動機
内の発熱状況とは無関係にファン用電動機は常時定格回
転数に駆動されるために電力を浪費していた。(Problems to be Solved by the Invention) As mentioned above, in the conventional motor cooling system, the fan motor is always driven at the rated rotation speed regardless of the heat generation inside the working motor, which wastes electric power. .
そこで本発明は、作業用電動機内の発熱状況に応じてフ
ァン用電動機の回転数を変化させることにより冷却のた
めの電力量を低減させて省エネルギーをはかる電動機冷
却装置を提供する。Therefore, the present invention provides a motor cooling device that saves energy by reducing the amount of power used for cooling by changing the rotational speed of a fan motor according to the state of heat generation within the working motor.
［発明の構成］
（課題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、産業機械
を駆動する電動機を冷却する電動機冷却装置において、
前記電動機内の温度を検出する温度検出手段と、前記検
出された温度の変化率を演算する温度変化率演算手段と
、前記検出された温度と前記演算された温度変化率を用
いて前記電動機を冷却する冷却用電動機を制御するため
の回転数基準を発生する冷却用電動機制御手段とを備え
たことを特徴とする電動機冷却装置を提供する。[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the present invention provides a motor cooling device for cooling an electric motor that drives an industrial machine.
temperature detecting means for detecting the temperature within the electric motor; temperature change rate calculating means for calculating the rate of change of the detected temperature; and controlling the electric motor using the detected temperature and the calculated temperature change rate. Provided is a motor cooling device characterized by comprising a cooling motor control means for generating a rotation speed reference for controlling a cooling motor to be cooled.
（作用）
作業用電動機の排気口側に設置された温度検出器では排
気温度を検出し、この排気温度を温度勾配演算器に入力
して温度変化率である排気温度勾配を演算する。そして
排気温度と排気温度勾配を制御入力としてファジー制御
の制御規則により回転数基準発生器でファン用電動機の
回転数基準Ｎ。(Function) A temperature detector installed on the exhaust port side of the working electric motor detects the exhaust gas temperature, and this exhaust temperature is input to the temperature gradient calculator to calculate the exhaust gas temperature gradient, which is the rate of temperature change. Then, using the exhaust temperature and exhaust temperature gradient as control inputs, a rotation speed reference generator generates a rotation speed reference N for the fan motor according to fuzzy control rules.
を決定し、これにより回転数基準を発生し、可変速駆動
機がファン用電動機の回転数を制御することにより電力
の浪費を抑え省エネルギーをはかる。is determined, thereby generating a rotation speed reference, and the variable speed drive machine controls the rotation speed of the fan motor, thereby reducing power wastage and saving energy.
（実施例）
以下、図面を参照して本発明の詳細な説明する。第１図
は、本発明に係る電動機冷却装置の一実施例を示す。図
中、作業用電動機１の排気側通風管３に設置された温度
検出器６は排気温度θを検出し、この排気温度を温度勾
配演算器７に入力する。この温度勾配演算器７では、Ｔ
秒毎に（１）式により温度変化率である温度勾配ｄθ［
’Ｃ／Ｓ］を演算する。 ｄｔた
だしθｎ ：現在の排気温度［℃］
θｎ−１：前回の排気温度［’Ｃ］
そして、回転数基準発生器８は排気温度θと温度勾配ｄ
θを制御入力としてファジー制御を適用ｔ
してファン用電動機５の回転数基準ＮＯを決定する。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of a motor cooling device according to the present invention. In the figure, a temperature detector 6 installed on the exhaust side ventilation pipe 3 of the working electric motor 1 detects the exhaust gas temperature θ, and inputs this exhaust temperature to the temperature gradient calculator 7. In this temperature gradient calculator 7, T
Every second, the temperature gradient dθ[
'C/S] is calculated. dt However, θn: Current exhaust temperature [°C] θn-1: Previous exhaust temperature ['C] Then, the rotation speed reference generator 8 calculates the exhaust temperature θ and the temperature gradient d.
Using θ as a control input, fuzzy control is applied t to determine the rotation speed reference NO of the fan motor 5.
これに適用するファジー制御は下記の通りである。The fuzzy control applied to this is as follows.
（１）制御入力と制御出力のファジー集合（ａ）排気温
度θ： （低い、高い）
（ｂ）排気温度勾配置−！−：（小さい、大きい）ｄｔ
（Ｃ）回転数基準Ｎｏ、（低速、高速）それぞれのメン
バーシップ関数を第２図に示す。(1) Fuzzy set of control inputs and control outputs (a) Exhaust temperature θ: (low, high) (b) Exhaust temperature gradient position -! -: (small, large) dt (C) Rotation speed reference No., (low speed, high speed) respective membership functions are shown in FIG.
（２）ファジー制御規則
Ｒ１：もし、（θ＝低い）で（ｄθ＝小さい）ならば（
Ｎｏ＝低速）である。ｄｔ
Ｒ２：もし、（θ＝低い）で（ｄθ＝大きい）ならば（
Ｎｏ＝高速）である。ｄｔ
Ｒ３：もし、（θ＝高い）で（ｄθ＝小さい）ならば（
Ｎｏ＝高速）である。ｄｔ
Ｒ４：もし、（θ＝高い）で（ｄθ＝大きい）ならば（
Ｎｏ＝高速）である。ｄｔ
（３）Ｎｏの決定手順
第３図にθ＝２５℃、ｄθ＝１℃の適用例を示す。
ｄｔ
（Ｉ） θ＝２５℃が（θ＝低い）の適合度が０．５
で
ｄθ＝１℃／Ｓ（ｄ／９＝小さい）の適合度がｄｔ
ｄｔ
１．０であることより、ファジー制御規則０．５と判定
し、（Ｎｏ＝低速）のメンバーシップ関数のグラフより
適合度０．５以下の部分（斜線部）を抽出する。(2) Fuzzy control rule R1: If (θ=low) and (dθ=small), then (
No = low speed). dt R2: If (θ=low) and (dθ=large), then (
No = high speed). dt R3: If (θ=high) and (dθ=small), then (
No = high speed). dt R4: If (θ=high) and (dθ=large), then (
No = high speed). dt (3) No determination procedure FIG. 3 shows an example of application where θ=25°C and dθ=1°C.
dt (I) The fitness of θ=25℃ (θ=low) is 0.5
The fitness of dθ=1℃/S (d/9=small) is dt
Since dt is 1.0, it is determined that the fuzzy control rule is 0.5, and from the graph of the membership function (No=low speed), the portion (shaded portion) with a fitness of 0.5 or less is extracted.
（ＩＩ）他のファジー制御規則Ｒ２〜Ｒ４に対して（Ｉ
） と同様の処理を行う。(II) For other fuzzy control rules R2 to R4 (I
).
（ＩＩＩ） （Ｉ） と （ＩＩ）の処理で得られた
抽出部を重ね合せてその重心を求め、重心でＮＯの値（
つまり０．５）を制御出力とする。(III) Overlap the extracted parts obtained by processing (I) and (II) to find their center of gravity, and calculate the value of NO (
In other words, 0.5) is set as the control output.
ただし、Ｎｏ＝Ｑ、 ５は定格回転数の５０％を表わ
す。However, No=Q, 5 represents 50% of the rated rotation speed.
上記のようなファジー制御により回転数基準発生器８は
ファン用電動機５の回転基準Ｎｏを決定し、これにより
回転数基準を発生し、可変駆動機９がファン用電動機５
の回転数を制御する。このことによって発熱状況に応じ
た作業用電動機１の冷却ができる。また、回転数基準発
生器８において、冷却機能をダイナミ力ルモデルで把握
して、２人力１出力のＰＩＤ制御により回転数基準Ｎｏ
を決定してもよい。Through the fuzzy control described above, the rotation speed reference generator 8 determines the rotation reference No. of the fan motor 5, thereby generating a rotation speed reference, and the variable drive unit 9 determines the rotation reference number of the fan motor 5.
control the rotation speed. This allows the working electric motor 1 to be cooled according to the heat generation situation. In addition, in the rotation speed reference generator 8, the cooling function is grasped by a dynamic force model, and the rotation speed reference No.
may be determined.
［発明の効果］
以上詳述してきたように、本発明によれば、作業用電動
機の排気温度と温度勾配を制御入力としてファン電動機
の回転数を変化させることにより電動機内の発熱状況に
応じた冷却ができ、エネルギーの浪費を防ぎ、効率のよ
い冷却ができる。[Effects of the Invention] As described above in detail, according to the present invention, the rotation speed of the fan motor is changed using the exhaust temperature and temperature gradient of the working motor as control inputs, thereby adjusting the number of rotations according to the state of heat generation within the motor. It can cool, prevent energy wastage, and provide efficient cooling.
第１図は本発明に係る電動機冷却装置の一実施例の構成
を示す構成図、第２図は本発明における回転数基準決定
器に適用するファジー制御に用いるファジー集合のメン
バーシップ関数を示すグラフ、第３図は本発明における
回転数基準決定器に適用するファジー制御の手順を説明
する図で、第４図は従来の電動機冷却装置を示す構成図
である。
１・・・・・・・・・作業用電動機
第１図
４・・・・・・・・・冷却ファン
５・・・・・・・・・ファン用電動機
６・・・・・・・・・温度検出器
７・・・・・・・・・温度勾配演算器
８・・・・・・・・・回転数基準発生器９・・・・・・
・・・可変速駆動機
代理人弁理士 則近憲泊轡士か生者す
代コ人 （ご拍子 山 下 −
θが低い
θが高い
θ（Ｃ）
θ（℃）
伸ｔｌ：／Ｓ）
Ｍ（℃／Ｓ）
第
図
θ（℃）
錆３）
ｔ
Ｎｏ（−）
θ（Ｃ＞
伸φ）
Ｎバー）
θ（℃）
棒Ｃ／ｓ ）
■
Ｎｏ （−）
第
図
Ｕ
第
図FIG. 1 is a block diagram showing the configuration of an embodiment of the motor cooling device according to the present invention, and FIG. 2 is a graph showing the membership function of a fuzzy set used for fuzzy control applied to the rotation speed reference determiner in the present invention. , FIG. 3 is a diagram illustrating the fuzzy control procedure applied to the rotation speed reference determiner in the present invention, and FIG. 4 is a configuration diagram showing a conventional motor cooling device. 1...Work electric motor Fig. 1 4...Cooling fan 5...Fan electric motor 6...・Temperature detector 7...Temperature gradient calculator 8...Rotation speed reference generator 9...
...Patent attorney representing variable speed drive machine Noriyuki Norichika or living person M (°C/S) Fig. θ (°C) Rust 3) t No (-) θ (C> Elongation φ) N bar) θ (°C) Bar C/s ) ■ No (-) Fig. U Fig.
Claims (1)
おいて、前記電動機内の温度を検出する温度検出手段と
、前記検出された温度の変化率を演算する温度変化率演
算手段と、前記検出された温度と前記演算された温度変
化率を用いて前記電動機を冷却する冷却用電動機を制御
するための回転数基準を発生する冷却用電動機制御手段
とを備えたことを特徴とする電動機冷却装置。A motor cooling device for cooling an electric motor that drives an industrial machine, comprising: temperature detection means for detecting a temperature inside the electric motor; temperature change rate calculation means for calculating a rate of change of the detected temperature; and a temperature change rate calculation means for calculating a rate of change of the detected temperature. and cooling motor control means for generating a rotation speed reference for controlling a cooling motor that cools the motor using the calculated temperature change rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2099233A JPH04291A (en) | 1990-04-17 | 1990-04-17 | Motor cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2099233A JPH04291A (en) | 1990-04-17 | 1990-04-17 | Motor cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04291A true JPH04291A (en) | 1992-01-06 |
Family
ID=14241964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2099233A Pending JPH04291A (en) | 1990-04-17 | 1990-04-17 | Motor cooler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04291A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09182489A (en) * | 1995-10-25 | 1997-07-11 | Mitsubishi Materials Corp | Motor driving control and device thereof |
| US7033144B2 (en) * | 2002-06-05 | 2006-04-25 | Kabushiki Kaisha Kobe Seiko Sho | Cooling fan for a screw compressor drive motor |
| JP2012116456A (en) * | 2010-12-02 | 2012-06-21 | Hyundai Motor Co Ltd | Device for cooling drive motor of hybrid vehicle and method of controlling cooling device |
| CN102745856A (en) * | 2011-04-21 | 2012-10-24 | 中国石油化工股份有限公司 | Method for treating peroxide-containing wastewater with industrial waste gas |
| JP2014107336A (en) * | 2012-11-26 | 2014-06-09 | Canon Inc | Electronic apparatus and control method thereof, and program |
| CN110356245A (en) * | 2019-07-26 | 2019-10-22 | 奇瑞汽车股份有限公司 | A kind of motor excess temperature protection method and device |
-
1990
- 1990-04-17 JP JP2099233A patent/JPH04291A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09182489A (en) * | 1995-10-25 | 1997-07-11 | Mitsubishi Materials Corp | Motor driving control and device thereof |
| US7033144B2 (en) * | 2002-06-05 | 2006-04-25 | Kabushiki Kaisha Kobe Seiko Sho | Cooling fan for a screw compressor drive motor |
| JP2012116456A (en) * | 2010-12-02 | 2012-06-21 | Hyundai Motor Co Ltd | Device for cooling drive motor of hybrid vehicle and method of controlling cooling device |
| CN102745856A (en) * | 2011-04-21 | 2012-10-24 | 中国石油化工股份有限公司 | Method for treating peroxide-containing wastewater with industrial waste gas |
| JP2014107336A (en) * | 2012-11-26 | 2014-06-09 | Canon Inc | Electronic apparatus and control method thereof, and program |
| CN110356245A (en) * | 2019-07-26 | 2019-10-22 | 奇瑞汽车股份有限公司 | A kind of motor excess temperature protection method and device |
| CN110356245B (en) * | 2019-07-26 | 2022-08-12 | 奇瑞汽车股份有限公司 | Motor over-temperature protection method and device |
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