JP2929843B2 - Field winding temperature measurement device for brushless excitation type synchronous machine - Google Patents
Field winding temperature measurement device for brushless excitation type synchronous machineInfo
- Publication number
- JP2929843B2 JP2929843B2 JP4174733A JP17473392A JP2929843B2 JP 2929843 B2 JP2929843 B2 JP 2929843B2 JP 4174733 A JP4174733 A JP 4174733A JP 17473392 A JP17473392 A JP 17473392A JP 2929843 B2 JP2929843 B2 JP 2929843B2
- Authority
- JP
- Japan
- Prior art keywords
- field winding
- measuring device
- synchronous machine
- temperature
- field
- 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
- 238000004804 winding Methods 0.000 title claims description 66
- 230000001360 synchronised effect Effects 0.000 title claims description 21
- 230000005284 excitation Effects 0.000 title claims description 18
- 238000009529 body temperature measurement Methods 0.000 title 1
- 239000003507 refrigerant Substances 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 12
- 238000005259 measurement Methods 0.000 description 12
- 230000004907 flux Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Control Of Eletrric Generators (AREA)
- Synchronous Machinery (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、ブラシレス励磁方式
同期機の界磁巻線の温度を測定する界磁巻線温度測定装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a field winding temperature measuring device for measuring the temperature of a field winding of a brushless excitation type synchronous machine.
【０００２】[0002]
【従来の技術】ブラシレス励磁方式同期機は、同期機と
同軸に結合された交流励磁機の電機子巻線に発生する交
流電圧を整流器で整流し、界磁巻線を励磁している。ブ
ラシレス励磁方式同期機の界磁巻線は、運転中は回転し
ているので、界磁巻線の温度を測定するには、従来、界
磁巻線の電圧，電流を検出して回転子に取り付けた発信
器から発信し、これを固定側の受信器で受信し、界磁巻
線の抵抗を演算することにより界磁巻線の温度を測定す
る所謂抵抗法により界磁巻線の温度を測定していた。2. Description of the Related Art In a brushless excitation type synchronous machine, an AC voltage generated in an armature winding of an AC exciter coupled coaxially with the synchronous machine is rectified by a rectifier to excite a field winding. Since the field winding of a brushless excitation type synchronous machine is rotating during operation, to measure the temperature of the field winding, conventionally, the voltage and current of the field winding are detected and applied to the rotor. Transmitted from the attached transmitter, received by the receiver on the fixed side, calculate the resistance of the field winding, measure the temperature of the field winding by the so-called resistance method to measure the temperature of the field winding I was measuring.
【０００３】ブラシレス励磁方式同期機の交流励磁機
は、整流機を負荷とするために交流励磁機の界磁電流、
制御巻線電流、直軸（横軸）磁束等は交流励磁機の定格
周波数の６倍の周波数で変動する成分を有することにな
る。この変動成分は負荷即ち主同期機の界磁電流に比例
するので、この変動成分を測定することによって間接的
に界磁電流を測定することができる。交流励磁機の極間
に配置したピックアップコイルにより誘起電圧を測定す
れば、横軸磁束の変化をピックアップできる。An AC exciter of a brushless excitation type synchronous machine has a field current of the AC exciter,
The control winding current, the magnetic flux on the direct axis (horizontal axis), and the like have components that fluctuate at a frequency six times the rated frequency of the AC exciter. Since this fluctuation component is proportional to the load, that is, the field current of the main synchronous machine, the field current can be measured indirectly by measuring this fluctuation component. If the induced voltage is measured by a pickup coil arranged between the poles of the AC exciter, a change in the magnetic flux on the horizontal axis can be picked up.
【０００４】図５は従来の界磁電流測定装置の構成図で
ある。交流励磁機の磁極は界磁鉄心１と界磁巻線２とか
らなり、図示しない回転電機子を駆動すると電機子に交
流電圧を発生する。ピックアップコイル４を取り付けた
界磁電流測定装置３を極間の中心に配置して誘導電圧を
測定する。このとき、従来の界磁電流測定装置では、複
数の用途に用いる場合には、測定用途の数だけ界磁電流
測定装置を設置する必要があった。FIG. 5 is a block diagram of a conventional field current measuring device. The magnetic pole of the AC exciter includes a field iron core 1 and a field winding 2, and when a rotating armature (not shown) is driven, an AC voltage is generated in the armature. The field current measuring device 3 to which the pickup coil 4 is attached is arranged at the center between the poles to measure the induced voltage. At this time, in the conventional field current measuring device, when it is used for a plurality of applications, it is necessary to install the field current measuring devices by the number of measuring applications.
【０００５】[0005]
【発明が解決しようとする課題】従来のごとく、回転子
に発信器を取り付け外部に受信器を配置するテレメータ
方式は高価であり、発信器を回転部に取り付けるため、
遠心力を考慮して堅牢な構造とする必要があり、発信器
は軸端部に配置されるため軸端部の重量が増すと、ター
ビン発電機のような横軸高速回転機では、軸系の危険速
度が低下するという問題がある。また、発信器から電波
を発信させ受信器でこの電波を受信する場合には、受信
器がノイズの影響を受け、エラーを生ずることがあり，
装置全体の信頼性が低下することがある。As in the prior art, a telemeter system in which a transmitter is mounted on a rotor and a receiver is disposed outside is expensive.
It is necessary to have a robust structure in consideration of the centrifugal force, and the transmitter is arranged at the shaft end, so if the weight of the shaft end increases, the horizontal shaft high-speed rotating machine such as a turbine generator has a shaft system. There is a problem that the critical speed of the vehicle decreases. In addition, when transmitting a radio wave from a transmitter and receiving the radio wave with a receiver, the receiver may be affected by noise and an error may occur.
The reliability of the entire device may be reduced.
【０００６】従来の界磁電流測定装置では、測定項目の
数だけ測定装置を配置するため、コストが高く、かつ界
磁極の極間に配置するため極間ごとに配置しても、極数
以上の測定用途には対応できないという問題があった。In the conventional field current measuring device, the measuring devices are arranged as many as the number of measurement items, so that the cost is high. However, there is a problem that it cannot be applied to the measurement use.
【０００７】この発明は、ブラシレス励磁方式同期機の
交流励磁機の回転子に発信器を取り付けることなく、界
磁巻線の温度を測定できて、しかも測定すべき用途が複
数でも１つの測定装置を極間に設置すれば、複数の用途
に対応できる界磁巻線温度測定装置を提供することを目
的とする。The present invention can measure the temperature of a field winding without attaching a transmitter to a rotor of an AC exciter of a brushless excitation type synchronous machine, and furthermore, one measuring device can be used for a plurality of applications. It is an object of the present invention to provide a field winding temperature measuring device that can be used for a plurality of applications by installing the magnetic field winding between poles.
【０００８】[0008]
【課題を解決するための手段】この発明によれば、 主
機に直結した交流励磁機から発生する交流出力を同じ回
転軸上に取り付けた整流器で整流し、主機の界磁巻線へ
供給するブラシレス励磁方式同期機において、このブラ
シレス励磁方式同期機の冷却器出口に取り付けた温度測
定素子と、前記交流励磁機の極間に同心に配置された複
数のピックアップコイルを有する界磁電流測定装置と、
前記温度測定素子から発信される信号と前記界磁電流測
定装置から発信される信号とを入力させ、前記冷却器出
口冷媒温度と界磁巻線の抵抗損による温度上昇値とを求
め、両者の和にあらかじめ記憶させた風損温度上昇値を
加算することにより、前記界磁巻線の温度を演算する界
磁巻線温度演算部とから構成することによって、上記目
的を達成する。According to the present invention, a brushless brushless rectifier which rectifies an AC output generated from an AC exciter directly connected to a main engine by a rectifier mounted on the same rotating shaft and supplies the rectified AC output to a field winding of the main engine. In the excitation system synchronous machine, a temperature measuring element attached to a cooler outlet of the brushless excitation system synchronous machine, a field current measuring device having a plurality of pickup coils concentrically arranged between the poles of the AC exciter,
A signal transmitted from the temperature measuring element and a signal transmitted from the field current measuring device are inputted, and a temperature rise value due to a resistance loss of the cooler outlet refrigerant and a field winding is obtained. The above object is achieved by adding a pre-stored windage temperature rise value to the sum to form a field winding temperature calculation unit for calculating the temperature of the field winding.
【０００９】また、界磁電流測定装置のピックアップコ
イルは、支持部材の端部に同心かつ多重に配置されるよ
うにすれば、１つの界磁電流測定装置によって複数の用
途に対応できる。Further, if the pickup coils of the field current measuring device are arranged concentrically and multiplely at the end of the support member, a single field current measuring device can be used for a plurality of applications.
【００１０】さらに、界磁電流測定装置のピックアップ
コイルは、支持部材の端部に同心かつ多段に配置される
ようにすれば、１つの界磁電流測定装置によって複数の
用途に対応できる。Furthermore, if the pickup coils of the field current measuring device are arranged concentrically and in multiple stages at the end of the support member, a single field current measuring device can be used for a plurality of applications.
【００１１】[0011]
【作用】ブラシレス励磁方式同期機の界磁巻線温度は、
冷却器出口冷媒温度と、回転子の風損による風損温度上
昇値と、界磁巻線に界磁電流が流れるとき抵抗損による
温度上昇値との和である。したがって界磁巻線温度は下
記の式によって求められる。 Ｔ2 ＝ＴC ＋Ｔm ＋ａ×Ｉf 2 ………（１） ここで Ｔ2 ：界磁巻線温度（℃） ＴC ：冷却器出口冷媒温度（℃） Ｔm ：風損による温度上昇（℃） ａ ：界磁巻線の抵抗損による温度係数 Ｉf ：界磁電流（Ａ） この発明においては、冷却器出口冷媒温度を測温抵抗体
からなる温度測定素子によって測定し、この温度測定素
子の信号を界磁巻線温度演算部に入力させ、冷却器出口
冷媒温度ＴC を求める。風損による温度上昇値Ｔm は、
主機の工場試験において測定した値をあらかじめ界磁巻
線温度演算部に記憶させておく。界磁巻線の抵抗損によ
る温度係数ａは、工場試験の３相短絡温度上昇試験にて
測定する。界磁電流測定装置から発信される信号を界磁
巻線温度演算部に入力させ、ここで界磁電流Ｉf を求め
る。これらの値を界磁巻線温度演算部で（１）式に基づ
いて演算し、界磁巻線温度Ｔ2 を求める。この際、界磁
電流測定装置のピックアップコイルを支持部材の端部に
同心かつ多重に配置すれば、１つの装置で交流励磁機の
極間の横軸磁束の変化を同時に複数ピックアップできる
ので、界磁電流測定を複数の用途に対応できる。また、
界磁電流測定装置のピックアップコイルを支持部材の端
部に同心かつ多段に配置すれば、１つの装置で交流励磁
機の極間の横軸磁束の変化を同時に複数ピックアップで
きるので、界磁電流測定を複数の用途に対応できる。[Action] The field winding temperature of the brushless excitation type synchronous machine is
This is the sum of the temperature of the refrigerant at the outlet of the cooler, the value of the temperature increase caused by the windage of the rotor, and the value of the temperature increase caused by the resistance loss when the field current flows through the field winding. Therefore, the field winding temperature is determined by the following equation. T 2 = T C + T m + a × I f 2 (1) where T 2 : field winding temperature (° C.) T C : cooler outlet refrigerant temperature (° C.) T m : temperature rise due to windage loss (° C.) a: Temperature coefficient due to resistance loss of field winding If : Field current (A) In the present invention, the temperature of the refrigerant at the outlet of the cooler is measured by a temperature measuring element composed of a temperature measuring resistor. the signal of the measuring element is inputted to the field winding temperature calculation section calculates the cooler outlet refrigerant temperature T C. Temperature rise value the T m by windage,
The value measured in the factory test of the main engine is stored in advance in the field winding temperature calculation unit. The temperature coefficient a due to the resistance loss of the field winding is measured by a three-phase short-circuit temperature rise test in a factory test. A signal transmitted from the field current measuring device is input to a field winding temperature calculation unit, and a field current If is obtained here. These values in field winding temperature calculation section (1) is calculated based on the formula, obtaining the field winding temperature T 2. At this time, if the pickup coils of the field current measuring device are arranged concentrically and multiplely at the end of the support member, a single device can simultaneously pick up a plurality of changes in the horizontal axis magnetic flux between the poles of the AC exciter. Magnetic current measurement can be used for multiple applications. Also,
If the pickup coils of the field current measuring device are arranged concentrically and in multiple stages at the end of the support member, a single device can simultaneously pick up a plurality of changes in the horizontal axis magnetic flux between the poles of the AC exciter, so that the field current measurement can be performed. Can be used for multiple applications.
【００１２】[0012]
【実施例】図１はこの発明の実施例による界磁巻線温度
測定装置の結線図である。図１において、界磁巻線温度
測定装置は、ブラシレス励磁方式同期機の冷却器出口に
取り付けた温度測定素子５と、交流励磁機の極間に同心
に配置された複数のピックアップコイル４を有する界磁
電流測定装置３と、温度測定素子５から発信される信号
と界磁電流測定装置３から発信される信号とを入力さ
せ、界磁巻線の温度を演算する界磁巻線温度演算部６と
から構成する。温度測定素子５から素子の抵抗値を入力
させ、界磁巻線温度演算部６において冷却機出口冷媒温
度を求める。界磁電流測定装置３で極間の横軸磁束の変
化を複数のピックアップコイルでピックアップし、界磁
巻線温度演算部６において界磁電流を求める。界磁巻線
温度は先に記載した下記の式によって求める。 Ｔ2 ＝ＴC ＋Ｔm ＋ａ×Ｉf 2 ………（１） ここで Ｔ2 ：界磁巻線温度（℃） ＴC ：冷却器出口冷媒温度（℃） Ｔm ：風損による温度上昇（℃） ａ ：界磁巻線の抵抗損による温度係数 Ｉf ：界磁電流（Ａ） 風損による温度上昇Ｔm は、主機の工場試験において測
定した値をあらかじめ界磁巻線温度演算部に記憶させて
おく。界磁巻線の抵抗損による温度係数ａは、工場試験
の３相短絡温度上昇試験にて測定する。FIG. 1 is a connection diagram of a field winding temperature measuring apparatus according to an embodiment of the present invention. In FIG. 1, the field winding temperature measuring device has a temperature measuring element 5 attached to an outlet of a cooler of a brushless excitation type synchronous machine, and a plurality of pickup coils 4 arranged concentrically between poles of an AC exciter. A field winding temperature calculating unit that inputs a signal transmitted from the field current measuring device 3, a signal transmitted from the temperature measuring element 5, and a signal transmitted from the field current measuring device 3, and calculates a temperature of the field winding. And 6. The resistance value of the element is input from the temperature measuring element 5, and the field winding temperature calculating section 6 calculates the refrigerant outlet refrigerant temperature. The field current measuring device 3 picks up the change in the horizontal axis magnetic flux between the poles with a plurality of pickup coils, and the field winding temperature calculation unit 6 calculates the field current. The field winding temperature is determined by the following equation described above. T 2 = T C + T m + a × I f 2 (1) where T 2 : field winding temperature (° C.) T C : cooler outlet refrigerant temperature (° C.) T m : temperature rise due to windage loss (° C.) a: temperature coefficient due to the resistance loss of the field winding I f: field current (a) temperature increase T m by windage losses, advance the field winding temperature calculating unit to a value measured at the factory testing of the main machine To be stored. The temperature coefficient a due to the resistance loss of the field winding is measured by a three-phase short-circuit temperature rise test in a factory test.
【００１３】実施例１ 図２は図１の界磁巻線温度測定装置に用いる同心かつ２
重に配置されたピックアップコイルを有する界磁電流測
定装置の構成図である。ピックアップコイル４は、支持
部材３ａの端部に同心かつ２重に配置され、界磁鉄心１
と界磁巻線２とからなる磁極の極間中心に配置されてい
る。この界磁電流測定装置によれば、同時に横軸磁束の
変化を２つのピックアップコイル４でピックアップする
ので、界磁電流測定は２つの用途に対応できる。 Embodiment 1 FIG. 2 is a diagram showing a concentric and two-dimensional motor used in the field winding temperature measuring apparatus shown in FIG.
FIG. 2 is a configuration diagram of a field current measurement device having a pickup coil arranged in a double manner. The pickup coil 4 is arranged concentrically and doubly at the end of the support member 3a,
And the field winding 2 are arranged at the center between the magnetic poles. According to this field current measurement device, the change in the magnetic flux on the horizontal axis is picked up by the two pickup coils 4 at the same time, so that the field current measurement can be used for two purposes.
【００１４】実施例２ 図３は図１の界磁巻線温度測定装置に用いる同心かつ２
重に配置されたピックアップコイルを有する界磁電流測
定装置の構成図である。ピックアップコイル４は、支持
部材３ａの端部に同心かつ２重に配置され、界磁鉄心１
と界磁巻線２とからなる磁極の極間中心に配置されてい
る。この界磁電流測定装置によれば、同時に横軸磁束の
変化を２つのピックアップコイル４でピックアップする
ので、界磁電流測定は２つの用途に対応できる。 Embodiment 2 FIG. 3 is a diagram showing a concentric and two-dimensional coil used in the field winding temperature measuring apparatus shown in FIG.
FIG. 2 is a configuration diagram of a field current measurement device having a pickup coil arranged in a double manner. The pickup coil 4 is arranged concentrically and doubly at the end of the support member 3a,
And the field winding 2 are arranged at the center between the magnetic poles. According to this field current measurement device, the change in the magnetic flux on the horizontal axis is picked up by the two pickup coils 4 at the same time, so that the field current measurement can be used for two purposes.
【００１５】実施例３ 図４は図１の界磁巻線温度測定装置に用いる同心にして
２重かつ２段に配置されたピックアップコイルを有する
界磁電流測定装置の構成図である。ピックアップコイル
４は、支持部材３ａの端部に同心にして２重かつ２段に
配置され、界磁鉄心１と界磁巻線２とからなる磁極の極
間中心に配置されている。この界磁電流測定装置によれ
ば、同時に横軸磁束の変化を４つのピックアップコイル
４でピックアップするので、界磁電流測定は４つの用途
に対応できる。 Embodiment 3 FIG. 4 is a block diagram of a field current measuring device having concentric, double and two-stage pickup coils used in the field winding temperature measuring device of FIG. The pickup coil 4 is arranged concentrically with the end of the support member 3a and arranged in two stages in two stages. The pickup coil 4 is arranged at the center between the magnetic poles composed of the field iron core 1 and the field winding 2. According to this field current measuring device, the change in the magnetic flux on the horizontal axis is picked up by the four pickup coils 4 at the same time, so that the field current measurement can be applied to four uses.
【００１６】[0016]
【発明の効果】この発明によれば、ブラシレス励磁方式
同期機用の交流励磁機の回転子に発信器を取り付けるこ
となく、冷却器出口に取り付けた温度測定素子から発信
される信号と交流励磁機の極間に取りつ付けた界磁電流
測定装置から発信される信号とを入力させ、界磁巻線温
度演算部において界磁巻線温度を演算するので、軸系の
危険速度を低下させる恐れがなく、しかも簡単で安価な
装置でブラシレス励磁方式同期機の界磁巻線温度を測定
することができる。According to the present invention, the signal transmitted from the temperature measuring element attached to the outlet of the cooler and the AC exciter do not need to be attached to the rotor of the AC exciter for the brushless excitation type synchronous machine. Input signal from the field current measuring device attached between the poles, and calculate the field winding temperature in the field winding temperature calculation unit, which may reduce the critical speed of the shaft system. It is possible to measure the field winding temperature of a brushless excitation type synchronous machine without using a simple and inexpensive device.
【００１７】また、界磁電流測定装置のピックアップコ
イルは、同心かつ多重または多段に配置するので、界磁
電流測定に関する複数の用途に対応できる。Further, since the pickup coils of the field current measuring device are arranged concentrically and in multiple or multiple stages, the pickup coils can be used for a plurality of applications relating to field current measurement.
【図１】この発明の実施例による界磁巻線温度測定装置
の結線図である。FIG. 1 is a connection diagram of a field winding temperature measuring device according to an embodiment of the present invention.
【図２】図１の界磁巻線温度測定装置に用いる実施例１
の界磁電流測定装置の構成図である。FIG. 2 is a first embodiment used in the field winding temperature measuring device of FIG. 1;
1 is a configuration diagram of a field current measuring device of FIG.
【図３】図１の界磁巻線温度測定装置に用いる実施例２
の界磁電流測定装置の構成図である。FIG. 3 is a second embodiment used in the field winding temperature measuring device of FIG. 1;
1 is a configuration diagram of a field current measuring device of FIG.
【図４】図１の界磁巻線温度測定装置に用いる実施例３
の界磁電流測定装置の構成図である。FIG. 4 is a third embodiment used in the field winding temperature measuring device of FIG. 1;
1 is a configuration diagram of a field current measuring device of FIG.
【図５】従来の界磁電流測定装置の構成図である。FIG. 5 is a configuration diagram of a conventional field current measuring device.
１ 界磁鉄心 ２ 界磁巻線 ３ 界磁電流測定装置 ３ａ 支持部材 ４ ピックアップコイル ５ 温度測定素子 ６ 界磁巻線温度演算部 DESCRIPTION OF SYMBOLS 1 Field iron core 2 Field winding 3 Field current measuring device 3a Support member 4 Pickup coil 5 Temperature measuring element 6 Field winding temperature calculating part
Claims (3)
流出力を同じ回転軸上に取り付けた整流器で整流し、主
機の界磁巻線へ供給するブラシレス励磁方式同期機にお
いて、このブラシレス励磁方式同期機の冷却器出口に取
り付けた温度測定素子と、前記交流励磁機の極間に同心
に配置された複数のピックアップコイルを有する界磁電
流測定装置と、前記温度測定素子から発信される信号と
前記界磁電流測定装置から発信される信号とを入力さ
せ、前記冷却器出口冷媒温度と界磁巻線の抵抗損による
温度上昇値とを求め、両者の和にあらかじめ記憶させた
風損による温度上昇値を加算することにより、前記界磁
巻線の温度を演算する界磁巻線温度演算部とから構成す
ることを特徴とするブラシレス励磁方式同期機の界磁巻
線温度測定装置。1. A brushless excitation synchronous machine wherein an AC output generated from an AC exciter directly connected to a main engine is rectified by a rectifier mounted on the same rotating shaft and supplied to a field winding of the main engine. A temperature measuring element attached to a cooler outlet of the synchronous machine, a field current measuring device having a plurality of pickup coils concentrically arranged between the poles of the AC exciter, and a signal transmitted from the temperature measuring element. A signal transmitted from the field current measuring device is input, and a temperature rise value due to a resistance loss of the cooler outlet refrigerant and a field winding is obtained, and a temperature due to a wind loss stored in advance in a sum of the two. A field winding temperature measuring device for a brushless excitation type synchronous machine, comprising: a field winding temperature calculator for calculating a temperature of the field winding by adding a rising value.
の界磁巻線温度測定装置において、界磁電流測定装置の
ピックアップコイルは、支持部材の端部に同心かつ多重
に配置されていることを特徴とするブラシレス励磁方式
同期機の界磁巻線温度測定装置。2. A field winding temperature measuring device for a brushless excitation type synchronous machine according to claim 1, wherein the pickup coils of the field current measuring device are arranged concentrically and multiplely at the end of the support member. A field winding temperature measuring device for a brushless excitation type synchronous machine characterized by the following.
の界磁巻線温度測定装置において、界磁電流測定装置の
ピックアップコイルは、支持部材の端部に同心かつ多段
に配置されていることを特徴とするブラシレス励磁方式
同期機の界磁巻線温度測定装置。3. The field winding temperature measuring device for a brushless excitation type synchronous machine according to claim 1, wherein the pickup coils of the field current measuring device are arranged concentrically and in multiple stages at the end of the support member. A field winding temperature measuring device for a brushless excitation type synchronous machine characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4174733A JP2929843B2 (en) | 1992-06-09 | 1992-06-09 | Field winding temperature measurement device for brushless excitation type synchronous machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4174733A JP2929843B2 (en) | 1992-06-09 | 1992-06-09 | Field winding temperature measurement device for brushless excitation type synchronous machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05344685A JPH05344685A (en) | 1993-12-24 |
| JP2929843B2 true JP2929843B2 (en) | 1999-08-03 |
Family
ID=15983716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4174733A Expired - Lifetime JP2929843B2 (en) | 1992-06-09 | 1992-06-09 | Field winding temperature measurement device for brushless excitation type synchronous machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2929843B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3540730B2 (en) * | 2000-08-07 | 2004-07-07 | 株式会社日立製作所 | Brushless AC generator and method of measuring field winding temperature |
| JP4237075B2 (en) * | 2004-02-17 | 2009-03-11 | 三菱電機株式会社 | Rotating electric machine |
-
1992
- 1992-06-09 JP JP4174733A patent/JP2929843B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05344685A (en) | 1993-12-24 |
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