JPS6258851A - Controlling method for air quantity of cooling fan for motor - Google Patents
Controlling method for air quantity of cooling fan for motorInfo
- Publication number
- JPS6258851A JPS6258851A JP10861386A JP10861386A JPS6258851A JP S6258851 A JPS6258851 A JP S6258851A JP 10861386 A JP10861386 A JP 10861386A JP 10861386 A JP10861386 A JP 10861386A JP S6258851 A JPS6258851 A JP S6258851A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- air volume
- cooling
- cooling air
- cooling fan
- 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
Landscapes
- Motor Or Generator Cooling System (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Temperature (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、獣銅及び軽金属の圧延プロセスにおける電動
機冷却ファンの風ｆ制御方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for controlling the wind f of a motor cooling fan in the rolling process of copper and light metals.
（従来の技術）
従来の冷却風量の調整方法としては■、全圧延ケースに
おいて消該電動機の最大負荷率全算定もしくは実測し、
その最大負荷率に対応した冷却風量となる様に、当該電
動機の冷却ファン用ダンパーの開度の調整及び冷却風量
に応じて電気室押込ファン用ダンパーの開度の調整もし
くは運転台数を増減する方法は既に実施されている。(Prior art) The conventional method for adjusting the cooling air volume is to calculate or actually measure the maximum load factor of the cooling motor in all rolling cases.
A method of adjusting the opening degree of the damper for the cooling fan of the motor and adjusting the opening degree of the damper for the electric room forced fan or increasing or decreasing the number of units in operation according to the cooling air volume so that the cooling air volume corresponds to the maximum load factor. has already been implemented.
更に■、電動機周辺の外気温度のみを検出して、予め設
定した外気温度と所要送風量との関係から送風量を求め
、これを周波数信号に変換して冷却ファンの回転数を制
御する方法は、特開昭５９−８３５５５号公報に開示さ
れている。Furthermore, there is a method that detects only the outside air temperature around the electric motor, calculates the airflow amount from the relationship between the preset outside air temperature and the required airflow amount, and converts this into a frequency signal to control the rotation speed of the cooling fan. , disclosed in Japanese Patent Application Laid-Open No. 59-83555.
（発明が解決しようとする問題点）
電！ｖＩ機の冷却ファンは一般に冷却空気温度４０′”
Ｃ１負荷率１００チに耐える風量に設計、製作されてい
る。従って、冷却空気温度が低下し負荷率も低下すれば
相乗して冷却風量を低減できる。(Problem that the invention seeks to solve) Den! The cooling fan of vI aircraft generally has a cooling air temperature of 40'.
It is designed and manufactured to have an air volume that can withstand a C1 load factor of 100 cm. Therefore, if the cooling air temperature decreases and the load factor also decreases, the cooling air volume can be reduced synergistically.
従来、実施されている前記■の方法では、電動機の冷却
風量及び電気室の押込ファン風量は、圧延時の最大負荷
率に対応した／を量に固定する方法であり、圧延材料、
材料温度、圧延ピッチ等によジ変化する負荷率に追従せ
ず一定である。In the conventionally practiced method (2), the cooling air volume of the electric motor and the forced fan air volume of the electric room are fixed at amounts corresponding to the maximum load factor during rolling, and the rolling material,
It does not follow the load factor, which changes depending on material temperature, rolling pitch, etc., and remains constant.
又、前記■の方法は、圧延時の負荷率とは無関係に、外
気温度のみを検出し、予め設定した温度と風量の相関に
よる冷却風量に自動的に制御する方法及び装置である。Further, the method (2) is a method and apparatus that detects only the outside air temperature, regardless of the load factor during rolling, and automatically controls the cooling air volume based on a preset correlation between the temperature and the air volume.
これらは、各々以下の欠点がある。■の方法は、圧延時
の最大負荷率に対応した風量に固定するものであり、負
荷率の変化に拘らず、冷却風量は一定であり、しかもダ
ンパーでの絞り効果のみであるため、冷却ファン及び電
気室押込ファンの省電力効果は小さい。Each of these has the following drawbacks. Method (2) fixes the air volume to correspond to the maximum load rate during rolling, and the cooling air volume is constant regardless of changes in the load rate, and the only effect is the throttling effect of the damper, so the cooling fan And the power saving effect of the electric room forced fan is small.
又、■の方法は、圧延時の負荷率の変化に拘らず、外気
温度のみに着目した方法であり、夏場では殆んど効果が
なく、特に圧延材料未到来等の待機状態における風量低
減の考慮もないため、年間を通しての省電力効果は小さ
い。In addition, the method (■) focuses only on the outside temperature, regardless of changes in the load factor during rolling, and is almost ineffective in the summer, especially when reducing air volume during standby conditions such as when rolling material has not yet arrived. Since there is no consideration, the power saving effect throughout the year is small.
（問題点を解決するための手段）
本発明は、前記従来技術の問題点を解決するためになさ
れたものであって、
（１）冷却ファンを備えた他力通風型電動機の冷却風量
と電動機の熱的等価負荷（以下単に負荷率と略称する）
との関係を予め設定しておき、各電動機の負荷率をプラ
ントの稼働状態から自動的にあるいは予め設定したテー
ブルによって求め、この負荷率によって冷却風量を決定
すると共に、プラント全体の各冷却ファンの回転数を自
動的に制御することによシ冷却風量を所定の値にコント
ロールすることを特徴とする電動機冷却ファンの風量制
御方法、
（２）前記冷却風量の決定は、外気温度又はユニットグ
ー２−の水温を加味して決定するものである前記第（１
）項記載の方法、及び
（３） 前記冷却風量の決定は、電動機の巻線温度を
加味して決定する事を特徴とする特許請求の範囲第１項
、乃至第２項記載の方法を要旨とするものである。(Means for Solving the Problems) The present invention has been made to solve the problems of the prior art, and includes the following: (1) Cooling air volume of an external ventilation type electric motor equipped with a cooling fan and the electric motor thermal equivalent load (hereinafter simply referred to as load factor)
The relationship between the An air volume control method for an electric motor cooling fan, characterized in that the cooling air volume is controlled to a predetermined value by automatically controlling the rotation speed. - The above-mentioned (1) is determined by taking into account the water temperature of
), and (3) the method according to claims 1 and 2, characterized in that the cooling air volume is determined by taking into account the winding temperature of the electric motor. That is.
（実施例）及び（作用） 以下図面に基づいて本発明を説明する。(Example) and (effect) The present invention will be explained below based on the drawings.
第１図は本発明の実施例を示すブロック線図であり、第
２図は本発明に係る電動機の負荷率と電動機冷却風蓋の
風量低減係数との関係を例示する図である１つ
本発明は第１図及び第２図に示すように、風量設定演算
を行なう演算制御装置２にて、システムｉｔｔ算１！ｋ
ｌよりの圧延材料、材料温度、材料サイズ。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram illustrating the relationship between the load factor of the electric motor and the air volume reduction coefficient of the motor cooling wind cover according to the present invention. As shown in FIGS. 1 and 2, the invention uses a calculation and control device 2 that performs air volume setting calculations to calculate the system itt calculation 1! k
Rolling material, material temperature, material size from l.
圧延ピッチ等の圧延情報を受け、あるいはプラントの状
態全監視するセンサー信号により圧延材毎の各電動機の
負荷率を算定し、第２図に示すようなｔ動機毎に予め設
定した負荷率と冷却風量の相関による低減係数により、
冷却風量を演算し、それを回転数１ｔｆｌ１句（１信号
に変換して電動機冷却ファン７の回転数制御・インバー
ター４に出力し、電動機耐却風量制御金行い、且つ、成
動機冷却風量に応じた電気室押込風ｉを算出し、それを
回転数制御信号に変換して電気室押込ファン６の回転数
制御用インバーター９に出力し、電気室押込ファンのに
：を制御を行なう方法である。電動機冷却ファンの回転
数の算定式を次式に示す。The load factor of each electric motor for each rolled material is calculated by receiving rolling information such as rolling pitch, or by sensor signals that monitor all plant conditions, and the load factor and cooling are set in advance for each motor as shown in Figure 2. Due to the reduction coefficient due to the correlation of air volume,
Calculates the cooling air volume, converts it into a rotation speed of 1 tfl, and converts it into a signal to control the rotation speed of the motor cooling fan 7 and output it to the inverter 4, and controls the motor cooling air volume according to the motor cooling air volume. In this method, the electric room forced air i is calculated, converted into a rotation speed control signal, and outputted to the rotation speed control inverter 9 of the electric room forced fan 6 to control the electric room forced fan. The formula for calculating the rotation speed of the motor cooling fan is shown in the following formula.
但し
ＱＭ＝１！Ｌ動機定格風量
Ｋｊ：負荷率による風量低減係数
にθ：冷却温度による風量低減係数
ＮＭ：冷却ファン回転数
Ｑ ：冷却ファンの商用周波数における実測風量である
。However, QM=1! L-motor rated air volume Kj: Air volume reduction coefficient due to load factor θ: Air volume reduction coefficient due to cooling temperature NM: Cooling fan rotation speed Q: Actual air volume at the commercial frequency of the cooling fan.
電気室押込ファンの回転数の設定は、入排気の関係から
冷却風量よシも若干大目に押込む様回転数を算出する。When setting the rotation speed of the electric room forced fan, calculate the rotation speed so that the cooling air volume is slightly larger due to the intake and exhaust conditions.
即ち、
ここで、
ＮＦ ： ’＆気室押込ファンの回転数ＱＭｉ：各電動
機冷却ファンの設定風量Ｑｒｉ：各電気家電気室押込フ
ァン周波数における実測風量
に：電気室内を正圧に保つための係数である。That is, where, NF: '& rotation speed of air room forced fan QMi: set air volume of each motor cooling fan Qri: measured air volume at each electric home electrical room forced fan frequency: coefficient for maintaining positive pressure in the electrical room It is.
又、圧延材料がトラブル等によυ通常圧延ピッチ以内に
圧延材料が到達しない場合にも圧延情報あるいは、プラ
ントの状態を監視するセンサー信号音基に風量を自動的
に低減して省電力を図るべく考慮しである。In addition, even if the rolling material does not arrive within the normal rolling pitch due to trouble, etc., the air volume is automatically reduced based on the rolling information or the sensor signal tone that monitors the plant status to save power. We are considering this as much as possible.
図中１０は電動機冷却空気の流れ、１１は電気室押込空
気の流れである。In the figure, 10 is the flow of motor cooling air, and 11 is the flow of air forced into the electrical room.
第３図は本発明の他の実施例を示すブロック線図である
。ラインを総合的に監視し風量設定演算を行なう演算制
御装置２にてシステム計算機１より、圧延材料、圧延ピ
ッチ等の圧延情報を受け、予め実測により設定し７た材
料種別と圧延ピッチ及び負荷率の相関により、到、来材
料の負荷率を算定し、予め設定した第２図に示す負荷率
と冷却Ｋｆｉｋの相関による低減係数と、冷却空気温度
センサー３により温度を検出し第４図に例示するように
、予め設定した外気温度と冷却風量の相関による低減係
数あるいは第５図のようにユニットクーラーの冷却水温
と冷却風量の相関による低減係数との組合せにより、冷
却風量を算定し、それを回転数制御信号に変換して’ｌ
ｔ＃Ｊ機冷却ファン７０回転数制御用インバータ４に出
力し、′成動機冷却風童制御を行なめ１且つ電動機冷却
風量に応じて電気室押込風量を算出し、それを回転数制
御信号に変換して電気室押込ファン６の回転数を制御し
、押込風量制御を行なう。又、圧延材料のトラブル等に
より、通常圧延ピッチ以内に圧延材料が到達しない場合
は圧延ピッチ比較により自動的に風量全定格の約５０％
迄低減して、省電力効果を上げる。FIG. 3 is a block diagram showing another embodiment of the present invention. The arithmetic and control device 2, which comprehensively monitors the line and performs air volume setting calculations, receives rolling information such as rolling material and rolling pitch from the system computer 1, and sets the material type, rolling pitch, and load factor by actual measurement in advance. Based on the correlation, the load factor of the next material is calculated, and the reduction coefficient based on the correlation between the load factor and cooling Kfik shown in FIG. In order to Convert to rotation speed control signal
t#J machine cooling fan 70 is output to the rotation speed control inverter 4 to perform the motor cooling wind control 1, and calculate the electric room forced air volume according to the motor cooling air volume, and use it as a rotation speed control signal. The rotational speed of the electric room forced fan 6 is controlled by converting the rotation speed, and the forced air volume is controlled. In addition, if the rolled material does not arrive within the normal rolling pitch due to a problem with the rolled material, the air volume is automatically adjusted to approximately 50% of the total air volume rating by comparing the rolling pitch.
This will reduce the power consumption to an even higher level, increasing the power saving effect.
図中３Ａはユニットクー２−の冷却水温度を検出するセ
ンサーである。このように、負荷率と冷却風量の相関に
加えて、外気温度又はユニットクーラー水温と冷却風量
の相関を加味して冷却風ｉ全算定すると、精度のよい制
御が可能となる。In the figure, 3A is a sensor that detects the cooling water temperature of the unit cooler 2-. In this way, when the total cooling air i is calculated by taking into account the correlation between the outside air temperature or the unit cooler water temperature and the cooling air volume in addition to the correlation between the load factor and the cooling air volume, accurate control becomes possible.
第６図は本発明に係るユニットクーラーを例示する斜視
図である。FIG. 6 is a perspective view illustrating a unit cooler according to the present invention.
ユニットクーラー１１−Ｉ Ｖｉ、、モーター５冷却後
の空気全冷却水による熱交換によってモーターの冷却空
気温度を規定値以下とするものであり冷却空気は閉ルー
プをなし、外気と隔離した構造となっている。Unit cooler 11-I Vi,, The cooling air temperature of the motor is kept below the specified value by heat exchange with all the air cooling water after cooling the motor 5, and the cooling air forms a closed loop and is isolated from the outside air. There is.
従って、冷却水温が低下すれば、その分ユニットクーラ
ー１１−１出側の冷却突気＠度も低下するので冷却Ｋｎ
を削減できる。Therefore, if the cooling water temperature decreases, the cooling rush @ degree on the outlet side of the unit cooler 11-1 also decreases, so the cooling Kn
can be reduced.
次に′ｌよ動機の巻線温度を考慮した冷却風量の求め方
について説明する。第７図は一般的なく動機５の冷却空
気の流れを示すものであ夛冷却空気Ｌ２は、電動機冷却
ファン７により誘引され、電動機巻線１１−２を冷却し
て排気される。Next, we will explain how to determine the cooling air volume in consideration of the motor winding temperature. FIG. 7 shows a general flow of cooling air for the motor 5. The cooling air L2 is attracted by the motor cooling fan 7, cools the motor winding 11-2, and is exhausted.
電動機巻線１１−２の温度上昇値は以下の式で表せる。The temperature rise value of the motor winding 11-2 can be expressed by the following formula.
Δｔ ＝ ｔｃ−ｔｉ ・・・（３）式３式
％
Δｔ：電動機巻線１１−２と冷却空気１２の温度差ｔｃ
：心動機５の巻線温度
ｔｉ：冷却空気１２の温度
Ａ：電動機巻線の有効放熱面積
ｈ：放熱係数
Ｐ：電動機の熱損失
又、放熱係数りは、冷却空気の流速の関数で近似できる
。Δt = tc-ti...Equation (3) % Δt: Temperature difference tc between motor winding 11-2 and cooling air 12
: Winding temperature ti of the motor 5 : Temperature A of the cooling air 12 : Effective heat radiation area h of the motor winding : Heat radiation coefficient P : The heat loss of the electric motor or the heat radiation coefficient can be approximated by a function of the flow velocity of the cooling air. .
ｈ’ｑＫＶｎ ・・・（４）式： Ｖ：冷却空気の流速１３ Ｑ：冷却空気の風ｉ″１４ Ｓ：ダクトの断面積１５ 一方、電動機の熱損失Ｐは下式で表せる。h’qKVn ・・・(4) Formula: V: Cooling air flow rate 13 Q: Cooling air wind i″14 S: Cross-sectional area of duct 15 On the other hand, the heat loss P of the electric motor can be expressed by the following formula.
Ｐ ＝ Ｐｉ＋Ｐｃ （ＲＭＳ ）” −（５）
式Ｐｉ；電動機の無負荷損失
Ｐｃ ： ’ＫＬ動機の負荷損失
ＲＭＳ ：負荷率（熱的等価負荷）
以上より、負荷率と冷却風量の相関式は、以下の式で表
せる。P = Pi + Pc (RMS)” - (5)
Equation Pi: No-load loss Pc of electric motor: Load loss RMS of KL motor: Load factor (thermal equivalent load) From the above, the correlation between the load factor and the cooling air volume can be expressed by the following equation.
Ｑｃ：電動機巻線温度を一定とする冷却風量Ｑ０：電動
機の定格冷却風量
Ｐｏ：ぼ動機の全負荷損失
第８図に熱平衡式より算出した負荷率（ＲＭＳ”）と冷
却風量の相関図の一例を示す。Qc: Cooling air volume to keep the motor winding temperature constant Q0: Rated cooling air volume of the motor Po: Total load loss of the motor shows.
そして、第３図に示すように風量設定演算を行なう演算
制御装置２にてシステム計算機１よシの圧延材料、材料
温度、材料サイズ、圧延ピッチ等の圧延情報を受け、あ
るいは、プラントの状態を監視するセンサー信号により
、圧延材毎の各電動機の負荷率を算定し第２図に示すよ
うに、電動機毎に電動機の巻線温度一定となるように予
め設定した負荷率と冷却風量の相関による低減係数より
冷却風ｔを算出し、それを回転数制御信号に変換して電
動機冷却ファン７の回転数制御用インバーター４に出力
し１！動機の冷却風量制御を行ない、且つ、電動機冷却
風量に応じた電気室押込風量を算出しそれを回転数制御
信号に変換して電気室押込ファン６の回転数制御用イン
バーター９に出力し、電気室押込７７ン６の一風量制御
を行なうものである。As shown in Fig. 3, the arithmetic and control unit 2 that performs air volume setting calculations receives rolling information such as rolling material, material temperature, material size, rolling pitch, etc. from the system computer 1, or receives plant status information. Using the monitored sensor signals, the load factor of each motor for each rolled material is calculated, and as shown in Figure 2, the correlation between the load factor and the cooling air volume is determined in advance so that the temperature of the motor windings is constant for each motor. Calculate the cooling air t from the reduction coefficient, convert it into a rotation speed control signal, and output it to the rotation speed control inverter 4 of the motor cooling fan 7. It controls the cooling air volume of the motor, calculates the electric room forced air volume according to the motor cooling air volume, converts it into a rotation speed control signal, outputs it to the rotation speed control inverter 9 of the electric room forced fan 6, and This controls the air volume of the chamber pusher 77 and 6.
電動機冷却ファン７の回転数の算定は前記（６）式ｆ
Ｑｃ／Ｑ、について解き、該ＱＣ／Ｑ、 ｆ前記（１）
式のＫｌに置き換えてＮＭを求める。（Ｋｌ＝ ＱＣ／
Ｑ。）又電気室押込ファン６の回転数の設定は、入排気
の関係よυ前Ｈピ（２〕式を用いて行なうっ尚、電動機
冷却ファン７の回転数の設定においては、冷却空気温度
センサー３、あるいはユニットクーラー１１−１の水温
センサー３Ａにより、予め設定した冷却空気温度あるい
は、ユニットクーラー１１−１の水温と冷却風量の相関
による低減係数を加味することによ広更に効果的な制御
が可能となる。The rotation speed of the motor cooling fan 7 is calculated using the above formula (6) f.
Solve for Qc/Q, QC/Q, f (1) above.
Substitute Kl in the equation to find NM. (Kl=QC/
Q. ) Also, the rotation speed of the electric room forced fan 6 is set using the formula (2) according to the relationship between intake and exhaust.In addition, when setting the rotation speed of the motor cooling fan 7, the cooling air temperature sensor 3, or by adding a preset cooling air temperature using the water temperature sensor 3A of the unit cooler 11-1 or a reduction coefficient based on the correlation between the water temperature of the unit cooler 11-1 and the cooling air volume, more effective control can be achieved. It becomes possible.
（発明の効果）
本発明は、直動機の負荷率に基づいて電動機冷却ファン
の冷却風量をコントロールするものであるから、圧延時
の最大負荷率に対応した風量に固定する従来法と比較し
て、電動機冷却のための無駄な成力消費をなくシ、又外
気温度のみによる冷却風量制御とは異なり、圧延材料未
到来等の待機状態における風量低減が可能になる等顕著
な効果を奏する。(Effects of the Invention) The present invention controls the cooling air volume of the electric motor cooling fan based on the load factor of the direct-drive machine, so compared to the conventional method that fixes the air flow to the maximum load factor during rolling. This method has remarkable effects such as eliminating wasteful power consumption for motor cooling, and unlike cooling air volume control based only on outside temperature, it becomes possible to reduce air volume in a standby state such as when rolling material has not arrived.
なお、本発明は電動機冷却ファンに限らず、発電機冷却
ファンにも応用できるのは云うまでもない０It goes without saying that the present invention is applicable not only to electric motor cooling fans but also to generator cooling fans.
第１図は本発明の実施例を示すブロック線図、第２図は
本発明に係る電動機の負荷率と電動機冷却風量の風量低
減係数との関係を例示する図、第３図は本発明の他の実
施例を示すブロック線図、第４図は冷却空気の温度と風
量低減係数との関係を例示する図、第５図は冷却水温度
と風量低減係数との関係を例示する図、第６図はユニッ
トクーラーを説明する斜視図、第７図は、電動機の冷却
空気の流れを示す図、第８図は、負荷率（ＲＭＳ）と冷
却風量の相関図である。
１はシステム計算機、２は演算制御装置、３は冷却空気
温度センサー、３Ａはユニットクーラ一温度センサー、
４はインバーター、５は電動機、６は電気室押込ファン
及びモーター、７は電動機冷却ファン及びモーター、８
は電気室、９はインバーター、ｌＯは電動機冷却空気の
流れ、１１は電気室押込空気の流れ、１１−１はユニッ
トクーラー、１１−２は電動機巻線、１２は冷却空気、
１３は冷却空気の流速、１４は冷却空気の流量、１５は
ダクトの断面積である。
特許出願人 新日本製鉄株式会社
第１図
第２図
貧荷牟
第３図
第４図
第５図
ｉン夫ｐｙＫ−１ノ支
第６図
第７図FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram illustrating the relationship between the load factor of the motor and the air volume reduction coefficient of the motor cooling air volume according to the present invention, and FIG. 4 is a block diagram showing another embodiment; FIG. 4 is a diagram illustrating the relationship between cooling air temperature and air volume reduction coefficient; FIG. 5 is a diagram illustrating the relationship between cooling water temperature and air volume reduction coefficient; FIG. 6 is a perspective view illustrating the unit cooler, FIG. 7 is a diagram showing the flow of cooling air for the electric motor, and FIG. 8 is a correlation diagram between the load factor (RMS) and the amount of cooling air. 1 is a system computer, 2 is an arithmetic control unit, 3 is a cooling air temperature sensor, 3A is a unit cooler temperature sensor,
4 is an inverter, 5 is an electric motor, 6 is an electric room forced fan and motor, 7 is an electric motor cooling fan and motor, 8
is the electrical room, 9 is the inverter, IO is the flow of motor cooling air, 11 is the flow of forced air in the electrical room, 11-1 is the unit cooler, 11-2 is the motor winding, 12 is the cooling air,
13 is the flow rate of cooling air, 14 is the flow rate of cooling air, and 15 is the cross-sectional area of the duct. Patent Applicant: Nippon Steel Corporation Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 pyK-1 branch Figure 6 Figure 7
Claims (3)
と電動機の熱的等価負荷との関係を予め設定しておき、
電動機の熱的等価負荷を求め、この熱的等価負荷によつ
て冷却風量を決定すると共に冷却ファンの回転数を制御
することにより冷却風量を所定の値にコントロールする
ことを特徴とする電動機冷却ファンの風量制御方法。(1) The relationship between the cooling air volume of an externally ventilated motor equipped with a cooling fan and the thermal equivalent load of the motor is set in advance,
A motor cooling fan characterized by determining the thermal equivalent load of the electric motor, determining the cooling air volume based on the thermal equivalent load, and controlling the cooling air volume to a predetermined value by controlling the rotation speed of the cooling fan. Air volume control method.
ーラーの水温を加味して決定するものである特許請求の
範囲第１項記載の電動機冷却ファンの風量制御方法。(2) The method for controlling the air volume of a motor cooling fan according to claim 1, wherein the cooling air volume is determined by taking into account the outside air temperature or the water temperature of the unit cooler.
決定する事を特徴とする特許請求の範囲第１項又は第２
項記載の電動機冷却ファンの風量制御方法。(3) The cooling air volume is determined by taking into consideration the winding temperature of the electric motor, as claimed in claim 1 or 2.
2. Method for controlling air volume of electric motor cooling fan described in Section 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60-108099 | 1985-05-22 | ||
| JP10809985 | 1985-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6258851A true JPS6258851A (en) | 1987-03-14 |
Family
ID=14475847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10861386A Pending JPS6258851A (en) | 1985-05-22 | 1986-05-14 | Controlling method for air quantity of cooling fan for motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6258851A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006325347A (en) * | 2005-05-19 | 2006-11-30 | Sumitomo Metal Ind Ltd | System and method for controlling airflow in motor-cooling means |
| JP2008043115A (en) * | 2006-08-09 | 2008-02-21 | Hitachi Ltd | Rotating-electric machine and electric power generating system |
| US7583041B2 (en) | 2004-10-13 | 2009-09-01 | Honda Motor Co., Ltd. | Overheat preventing apparatus for electric motor |
| JP2013223284A (en) * | 2012-04-13 | 2013-10-28 | Toshiba Mitsubishi-Electric Industrial System Corp | Preventive maintenance device for motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58212342A (en) * | 1982-06-02 | 1983-12-10 | Sumitomo Metal Ind Ltd | Cooler for synchronous rotary electric machine |
| JPS5983555A (en) * | 1982-11-04 | 1984-05-15 | Sumitomo Metal Ind Ltd | Controlling method for air flow rate of motor cooling fan |
-
1986
- 1986-05-14 JP JP10861386A patent/JPS6258851A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58212342A (en) * | 1982-06-02 | 1983-12-10 | Sumitomo Metal Ind Ltd | Cooler for synchronous rotary electric machine |
| JPS5983555A (en) * | 1982-11-04 | 1984-05-15 | Sumitomo Metal Ind Ltd | Controlling method for air flow rate of motor cooling fan |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7583041B2 (en) | 2004-10-13 | 2009-09-01 | Honda Motor Co., Ltd. | Overheat preventing apparatus for electric motor |
| JP2006325347A (en) * | 2005-05-19 | 2006-11-30 | Sumitomo Metal Ind Ltd | System and method for controlling airflow in motor-cooling means |
| JP2008043115A (en) * | 2006-08-09 | 2008-02-21 | Hitachi Ltd | Rotating-electric machine and electric power generating system |
| JP2013223284A (en) * | 2012-04-13 | 2013-10-28 | Toshiba Mitsubishi-Electric Industrial System Corp | Preventive maintenance device for motor |
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