JP2015154653A - Rotor temperature measurement device and rotary electric machine using the same - Google Patents

Rotor temperature measurement device and rotary electric machine using the same Download PDF

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JP2015154653A
JP2015154653A JP2014027857A JP2014027857A JP2015154653A JP 2015154653 A JP2015154653 A JP 2015154653A JP 2014027857 A JP2014027857 A JP 2014027857A JP 2014027857 A JP2014027857 A JP 2014027857A JP 2015154653 A JP2015154653 A JP 2015154653A
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temperature
rotor
temperature measuring
calculator
temperature measurement
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幸祐 根本
Kosuke Nemoto
幸祐 根本
デ・ニ
Ni De
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Toshiba Corp
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Toshiba Corp
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Abstract

PROBLEM TO BE SOLVED: To stably measure a surface temperature of a rotor of a rotary electric machine.SOLUTION: A rotor temperature measurement device includes: temperature measurement elements 3 provided in an axial direction of a rotor 11 at a space between the rotor 11 and a stator 12 of a rotary electric machine 10; and a temperature calculator 2 which calculates a temperature of the rotor 11 in an axial direction on the basis of temperatures measured by the temperature measurement elements 3 and installation positions of the temperature measurement elements 3.

Description

本発明は、回転電機の回転子の温度を測定する回転子温度測定装置およびそれを用いた回転電機に関する。   The present invention relates to a rotor temperature measuring device that measures the temperature of a rotor of a rotating electrical machine and a rotating electrical machine using the same.

発電機や回転電動機等の回転電機においては、回転子コイル等の過熱を防ぐため、回転子表面の温度を測定、監視する必要がある。回転子表面の温度を測定する方法として回転子の抵抗に基づき回転子表面温度を測定する抵抗法があるが、回転子コイルの平均温度を算出しているため、回転子表面の局所的な温度を測定、監視することができない。   In a rotating electrical machine such as a generator or a rotary motor, it is necessary to measure and monitor the temperature of the rotor surface in order to prevent overheating of the rotor coil and the like. As a method of measuring the rotor surface temperature, there is a resistance method that measures the rotor surface temperature based on the resistance of the rotor, but since the average temperature of the rotor coil is calculated, the local temperature of the rotor surface is calculated. Cannot be measured and monitored.

そこで、回転子表面の局所的な温度を測定するために、回転子表面に複数の温度計測素子を設け、ＲＦＩＤタグを用いた非接触通信技術により、回転中の回転子の温度情報を固定子側で取得し、回転子温度の監視を行う方法が開発されている。（例えば、特許文献１、２参照。）。   Therefore, in order to measure the local temperature of the rotor surface, a plurality of temperature measuring elements are provided on the rotor surface, and the temperature information of the rotating rotor is obtained by a non-contact communication technology using an RFID tag. A method to acquire and monitor the rotor temperature has been developed. (For example, refer to Patent Documents 1 and 2.)

特開２０１０−８８１６４号公報JP 2010-88164 A 特開２０１２−７４０３５号公報JP 2012-74035 A

上述した特許文献をはじめとする従来技術は、運転時に回転運動を行う回転子に温度計測素子を設けているため有線による安定した電力供給が難しい。   In the related art including the above-described patent document, it is difficult to stably supply power by wire because a temperature measuring element is provided in a rotor that performs a rotating motion during operation.

そこで本発明は、安定して回転子の表面温度を測定することができる回転子温度測定装置を提供することを目的とする。   Then, an object of this invention is to provide the rotor temperature measuring apparatus which can measure the surface temperature of a rotor stably.

上記目的を達成するために、本発明の回転子温度測定装置は、回転電機の回転子と固定子の間隙において、回転子の軸方向に複数設けられる温度測定素子と、温度測定素子で測定された温度、および温度測定素子の設置位置に基づき、回転子の軸方向の温度を計算する温度計算機とを備えることを特徴とする。   In order to achieve the above object, a rotor temperature measuring device according to the present invention is measured with a plurality of temperature measuring elements provided in the axial direction of the rotor in the gap between the rotor and the stator of the rotating electrical machine, and the temperature measuring element. And a temperature calculator for calculating the temperature in the axial direction of the rotor based on the installation position of the temperature measuring element.

本発明の第１の実施形態に係る回転電機における回転子温度測定装置を示す概略縦断面図。1 is a schematic longitudinal sectional view showing a rotor temperature measuring device in a rotating electrical machine according to a first embodiment of the present invention. 本発明の第２の実施形態に係る回転電機における回転子温度測定装置を示す概略縦断面図。The schematic longitudinal cross-sectional view which shows the rotor temperature measuring apparatus in the rotary electric machine which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施形態に係る回転電機における回転子温度測定装置を示す概略縦断面図。The schematic longitudinal cross-sectional view which shows the rotor temperature measuring apparatus in the rotary electric machine which concerns on the 3rd Embodiment of this invention.

以下、本発明の実施形態を説明する。   Embodiments of the present invention will be described below.

（第１の実施形態）
（構成）
以下、本発明の第１の実施形態に係る回転子温度測定装置について図１を参照して説明する。図１は、本発明の第１の実施形態に係る回転電機における回転子温度測定装置を示す概略縦断面図である。 (First embodiment)
(Constitution)
Hereinafter, a rotor temperature measuring apparatus according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic longitudinal sectional view showing a rotor temperature measuring device in a rotating electrical machine according to a first embodiment of the present invention.

回転電機１０は、回転子１１と固定子１２とから構成される。回転子１１は軸周りに回転可能な円柱形状である。固定子１２は、回転子１１を所定の間隙をもって取り囲む形状である。   The rotating electrical machine 10 includes a rotor 11 and a stator 12. The rotor 11 has a cylindrical shape that can rotate around an axis. The stator 12 has a shape that surrounds the rotor 11 with a predetermined gap.

回転子温度測定装置は、温度計算機２と、温度測定素子３とから構成される。温度測定素子３は、回転子１１と固定子１２の間隙において温度測定面を回転子１１に向けて設けられ、回転子１１の表面温度を非接触で測定するものである。さらに温度測定素子３は、回転子表面の軸方向に複数アレイ状に配置され、回転子表面の軸方向の複数位置を同時に温度計測することができる。温度測定素子３は、例えば、サーミスタや赤外放射温度計、白金抵抗温度計等を適用することができる。   The rotor temperature measuring device includes a temperature calculator 2 and a temperature measuring element 3. The temperature measuring element 3 is provided in the gap between the rotor 11 and the stator 12 with the temperature measuring surface facing the rotor 11, and measures the surface temperature of the rotor 11 in a non-contact manner. Further, the temperature measuring elements 3 are arranged in a plurality of arrays in the axial direction of the rotor surface, and the temperature of the plurality of positions in the axial direction of the rotor surface can be measured simultaneously. As the temperature measuring element 3, for example, a thermistor, an infrared radiation thermometer, a platinum resistance thermometer or the like can be applied.

（作用）
以下、本発明の第１の実施形態の作用について説明する。 (Function)
The operation of the first embodiment of the present invention will be described below.

回転電機１０は、通常運転時において、固定子１２内で回転子１１が回転運動を行う。回転電機１０の回転子１１表面は経年劣化等により局部的な過熱が生じる場合がある。   In the rotating electrical machine 10, the rotor 11 rotates in the stator 12 during normal operation. The surface of the rotor 11 of the rotating electrical machine 10 may be locally overheated due to deterioration over time.

回転子温度測定装置は、回転電機１０の運転時において、回転する回転子１２の温度計測を行う。温度計算機２は、各温度測定素子３から温度計測結果を受信して、各温度測定素子３の設置位置に基づき、回転子１１の軸方向の温度分布を計算する。さらに温度計算機２は、表示装置４やプリンタ等によって、回転子１１の軸方向の温度分布を出力することができる。   The rotor temperature measuring device measures the temperature of the rotating rotor 12 during operation of the rotating electrical machine 10. The temperature calculator 2 receives the temperature measurement result from each temperature measuring element 3 and calculates the temperature distribution in the axial direction of the rotor 11 based on the installation position of each temperature measuring element 3. Further, the temperature calculator 2 can output the temperature distribution in the axial direction of the rotor 11 by a display device 4 or a printer.

なお回転子温度測定装置は、通常運転中だけでなく、停止中やターニング中において温度計測を行っても良い。   Note that the rotor temperature measurement device may perform temperature measurement not only during normal operation but also during stoppage or turning.

（効果）
本発明の第１の実施形態によれば、回転子１１軸方向に複数設けた温度測定素子３によって、回転子１１の温度計測を行うことによって、回転子１１の軸方向の温度分布を計算、出力することができる。 (effect)
According to the first embodiment of the present invention, the temperature distribution in the axial direction of the rotor 11 is calculated by measuring the temperature of the rotor 11 with a plurality of temperature measuring elements 3 provided in the axial direction of the rotor 11. Can be output.

（第２の実施形態）
（構成）
以下、本発明の第２の実施形態に係る回転電機について図２を参照して説明する。図２は、本発明の第２の実施形態に係る回転電機における回転子温度測定装置を示す概略縦断面図である。本実施形態では、第１の実施形態に加え、位置検出装置５を設けている。位置検出装置５は、回転子１１の位相情報、または物理的な回転位置から回転子１１の周方向の回転位置を検出することができる。 (Second Embodiment)
(Constitution)
A rotating electrical machine according to the second embodiment of the present invention will be described below with reference to FIG. FIG. 2 is a schematic longitudinal sectional view showing a rotor temperature measuring device in a rotating electrical machine according to the second embodiment of the present invention. In the present embodiment, a position detection device 5 is provided in addition to the first embodiment. The position detection device 5 can detect the rotational position of the rotor 11 in the circumferential direction from the phase information of the rotor 11 or the physical rotational position.

（作用）
以下、本発明の第２の実施形態の作用について説明する。 (Function)
The operation of the second embodiment of the present invention will be described below.

回転電機１０の運転時において、位置検出装置５は、回転子の回転位置を検出し、回転位置検出結果を温度計算機２に送信する。さらに温度測定素子３は、所定時間毎または位置検出装置５による回転位置検出時間毎に温度測定結果を温度計算機２に送信する。   During operation of the rotating electrical machine 10, the position detection device 5 detects the rotational position of the rotor and transmits the rotational position detection result to the temperature calculator 2. Further, the temperature measuring element 3 transmits a temperature measurement result to the temperature calculator 2 at every predetermined time or every rotation position detection time by the position detection device 5.

温度計算機２は、回転位置検出結果ならびに温度測定結果を受信する。温度計算機２は、温度測定結果が測定された時刻の回転位置検出結果を対応付け、温度測定素子３が設けられる各軸方向位置において、周方向の回転子１１表面温度を計算する。その結果、回転子１１表面の軸方向ならびに周方向の温度分布が計算、出力される。   The temperature calculator 2 receives the rotational position detection result and the temperature measurement result. The temperature calculator 2 associates the rotational position detection result at the time when the temperature measurement result is measured, and calculates the surface temperature of the rotor 11 in the circumferential direction at each axial position where the temperature measuring element 3 is provided. As a result, the temperature distribution in the axial direction and circumferential direction of the surface of the rotor 11 is calculated and output.

（効果）
本発明の第２の実施形態によれば、温度測定素子３によって回転子１１の表面温度を測定するとともに、位置検出装置５によって回転子１１の回転位置を測定することによって、回転子１１表面の軸方向ならびに周方向の温度分布を計算することができる。 (effect)
According to the second embodiment of the present invention, the surface temperature of the rotor 11 is measured by the temperature measuring element 3, and the rotational position of the rotor 11 is measured by the position detection device 5. Axial and circumferential temperature distributions can be calculated.

（第３の実施形態）
（構成）
以下、本発明の第３の実施形態に係る回転電機について図３を参照して説明する。図３は、本発明の第３の実施形態に係る回転電機における回転子温度測定装置を示す概略縦断面図である。本実施形態では、第２の実施形態に加え、警報装置６を設けている。警報装置６は、温度計算機２から温度測定結果を受信可能に接続される。 (Third embodiment)
(Constitution)
Hereinafter, a rotating electrical machine according to a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic longitudinal sectional view showing a rotor temperature measuring device in a rotating electrical machine according to the third embodiment of the present invention. In the present embodiment, an alarm device 6 is provided in addition to the second embodiment. The alarm device 6 is connected so as to be able to receive a temperature measurement result from the temperature calculator 2.

（作用）
以下、本発明の第３の実施形態の作用について説明する。 (Function)
The operation of the third embodiment of the present invention will be described below.

回転電機１０の運転時において、温度計算機２は、温度測定結果ならびに回転位置検出結果を受信し、回転子１１表面の軸方向ならびに周方向の各位置の温度を計算する。警報装置６は、回転子１１の表面各位置の温度を測定し、所定のしきい値と比較する。   During operation of the rotating electrical machine 10, the temperature calculator 2 receives the temperature measurement result and the rotation position detection result, and calculates the temperature at each position in the axial direction and circumferential direction of the surface of the rotor 11. The alarm device 6 measures the temperature at each position on the surface of the rotor 11 and compares it with a predetermined threshold value.

警報装置６は、回転子１１の表面温度がしきい値を超過した場合にアラームを発する。このとき、温度計算機２によって計算されたアラーム元となる温度測定位置を合わせて出力することもできる。さらに温度超過の累積時間が所定値を超えた場合にアラームを発生させてもよい。   The alarm device 6 issues an alarm when the surface temperature of the rotor 11 exceeds a threshold value. At this time, the temperature measurement position that is the alarm source calculated by the temperature calculator 2 can be output together. Furthermore, an alarm may be generated when the accumulated temperature excess time exceeds a predetermined value.

さらに警報装置６は、回転子１１の表面温度が所定のしきい値を超過した場合、または温度超過の累積時間が所定値を超えた場合に、回転電機１０に停止信号を送信させ、回転子１１の回転を停止させることもできる。   Furthermore, the alarm device 6 causes the rotating electrical machine 10 to transmit a stop signal when the surface temperature of the rotor 11 exceeds a predetermined threshold value, or when the accumulated temperature excess exceeds a predetermined value, and the rotor 11 can also be stopped.

（効果）
本発明の第３の実施形態によれば、警報装置６によって回転子１１表面温度が所定のしきい値を超過した場合に、アラームを発することによって、運転員等に過熱状態の発生を報知することができる。 (effect)
According to the third embodiment of the present invention, when an alarm device 6 causes the surface temperature of the rotor 11 to exceed a predetermined threshold, an alarm is issued to notify an operator or the like of the occurrence of an overheated state. be able to.

本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

２・・・温度計算機
３・・・温度測定素子
４・・・表示装置
５・・・位置検出装置
６・・・警報装置
１０・・・回転電機
１１・・・固定子
１２・・・回転子 DESCRIPTION OF SYMBOLS 2 ... Temperature calculator 3 ... Temperature measuring element 4 ... Display apparatus 5 ... Position detection apparatus 6 ... Alarm apparatus 10 ... Rotary electric machine 11 ... Stator 12 ... Rotor

Claims (6)

回転電機の回転子と固定子の間隙において、前記回転子の軸方向に複数設けられる温度測定素子と、
前記温度測定素子で測定された温度、および前記温度測定素子の設置位置に基づき、前記回転子の軸方向の温度を計算する温度計算機とを備えることを特徴とする回転子温度測定装置。 A plurality of temperature measuring elements provided in the axial direction of the rotor in the gap between the rotor and the stator of the rotating electrical machine;
A rotor temperature measuring apparatus comprising: a temperature calculator that calculates a temperature in an axial direction of the rotor based on a temperature measured by the temperature measuring element and an installation position of the temperature measuring element. 前記回転子の回転位置を検出する位置検出装置をさらに備え、
前記温度計算機は、前記温度測定素子で測定された温度、および前記回転子の回転位置に基づき、前記回転子の周方向の温度測定位置を計算することを特徴とする請求項１に記載の回転子温度測定装置。 A position detection device for detecting the rotational position of the rotor;
2. The rotation according to claim 1, wherein the temperature calculator calculates a temperature measurement position in a circumferential direction of the rotor based on a temperature measured by the temperature measuring element and a rotation position of the rotor. Child temperature measuring device. 前記温度計算機で計算された前記回転子表面の温度分布を表示する表示装置をさらに備えることを特徴とする請求項１または請求項２に記載の回転子温度測定装置。 The rotor temperature measuring device according to claim 1, further comprising a display device that displays a temperature distribution of the rotor surface calculated by the temperature calculator. 前記温度計算機は、前記回転子各部の温度が所定温度を超えた場合、警報を発することを特徴とする請求項１乃至請求項３の何れか一項に記載の回転子温度測定装置。 The rotor temperature measuring device according to any one of claims 1 to 3, wherein the temperature calculator issues an alarm when the temperature of each part of the rotor exceeds a predetermined temperature. 前記温度計算機は、前記回転子各部の温度が所定温度を超えた場合、前記回転電機を停止させることを特徴とする請求項１乃至請求項４の何れか一項に記載の回転子温度測定装置。 The said temperature calculator stops the said rotary electric machine, when the temperature of each part of the said rotor exceeds predetermined temperature, The rotor temperature measuring apparatus as described in any one of Claim 1 thru | or 4 characterized by the above-mentioned. . 請求項１乃至請求項５の何れか一項記載の回転子温度測定装置を備えることを特徴とする回転電機。 A rotating electrical machine comprising the rotor temperature measuring device according to any one of claims 1 to 5.
JP2014027857A 2014-02-17 2014-02-17 Rotor temperature measurement device and rotary electric machine using the same Pending JP2015154653A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109253806A (en) * 2018-11-01 2019-01-22 长沙龙力自控技术有限公司 A kind of rotor non-contact temperature measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109253806A (en) * 2018-11-01 2019-01-22 长沙龙力自控技术有限公司 A kind of rotor non-contact temperature measuring device

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