JPH1032962A - Method and device for detecting abnormality in field coil winding of rotary field type rotary electric machine - Google Patents
Method and device for detecting abnormality in field coil winding of rotary field type rotary electric machineInfo
- Publication number
- JPH1032962A JPH1032962A JP8185716A JP18571696A JPH1032962A JP H1032962 A JPH1032962 A JP H1032962A JP 8185716 A JP8185716 A JP 8185716A JP 18571696 A JP18571696 A JP 18571696A JP H1032962 A JPH1032962 A JP H1032962A
- Authority
- JP
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- Prior art keywords
- abnormality
- detection
- electric machine
- rotating
- waveform
- 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.)
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Links
- 230000005856 abnormality Effects 0.000 title claims abstract description 74
- 238000004804 winding Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims description 12
- 238000001514 detection method Methods 0.000 claims abstract description 92
- 230000004907 flux Effects 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転界磁形回転電
機の界磁巻線の異常検出方法および異常検出装置に関
し、交流発電機に多用されている回転界磁形回転電機の
界磁巻線の異常を運転中に検出することができるように
したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for detecting an abnormality in a field winding of a rotating field type rotating electric machine, and more particularly to a field winding of a rotating field type rotating electric machine frequently used in an AC generator. This is to detect a line abnormality during operation.
【０００２】[0002]
【従来の技術】交流発電機として、回転界磁形の回転電
機（同期機）が多用されている。このような回転界磁形
の回転電機では、電機子巻線が固定子に備えられてお
り、界磁巻線が回転子に備えられている。2. Description of the Related Art A rotating field type rotating electric machine (synchronous machine) is frequently used as an AC generator. In such a rotating field type rotating electric machine, the armature winding is provided on the stator, and the field winding is provided on the rotor.
【０００３】回転界磁形回転電機の界磁巻線の異常、即
ち、界磁巻線の部分的短絡や、並列回路を有する場合で
の界磁巻線の断線や接続異常は、停止時に絶縁診断を実
施して検出しているのが現状である。An abnormality in the field winding of the rotating field type rotating electric machine, that is, a partial short-circuit of the field winding, a disconnection of the field winding and an abnormal connection in the case of having a parallel circuit, are insulated at the time of stop. At present, the diagnosis is made and detected.
【０００４】現状では、運転中に異常を検出する方法に
ついては実用化されていない。つまり、回転界磁形回転
電機の界磁巻線は回転子側にあるため、運転中に界磁巻
線の異常を検出しようとした場合には、回転子側の界磁
巻線から固定子側に検出信号を伝える装置、例えば、回
転変流器等が必要となる。このような回転変流器等を用
いたのでは、広い設置スペースが必要であり、また高コ
ストとなるため、このような技術は現状では実用化され
ていないのである。At present, a method of detecting an abnormality during operation has not been put to practical use. In other words, since the field winding of the rotating field type rotating electric machine is on the rotor side, if it is attempted to detect an abnormality in the field winding during operation, the stator winding is removed from the field winding on the rotor side. A device for transmitting the detection signal to the side, for example, a rotary current transformer or the like is required. If such a rotary current transformer is used, a large installation space is required and the cost is high. Therefore, such a technique is not practically used at present.
【０００５】[0005]
【発明が解決しようとする課題】近年、回転界磁形回転
電機の固定子巻線の異常検出や、励磁装置の異常検出に
ついては、モニタリングシステム（運転時に状態をリア
ルタイムで監視して異常を検出するシステム）が実用化
され、保全の省力化に寄与している。このような背景が
あるため、固定子側の固定子巻線や励磁装置のみなら
ず、回転子側の界磁巻線の異常検出についても、リアル
タイムで異常の検出ができることが望まれていた。In recent years, regarding the detection of an abnormality in the stator winding of a rotating field type rotary electric machine and the detection of an abnormality in an exciter, a monitoring system (a state is monitored in real time during operation to detect an abnormality). System has been put to practical use, contributing to labor saving in maintenance. Given this background, it has been desired to be able to detect an abnormality in real time not only for the stator winding and the excitation device on the stator side, but also for the field winding on the rotor side.
【０００６】このように、界磁巻線についてもリアルタ
イムで異常検出ができれば、回転界磁形回転電機の全て
の巻線についてリアルタイムの監視ができるモニタリン
グシステムが完成するが、現状では前述したように、界
磁巻線についてリアルタイムで異常を検出することはで
きなかった。As described above, if an abnormality can be detected in real time for the field winding, a monitoring system capable of monitoring all windings of the rotating field type rotating electric machine in real time is completed. However, it was not possible to detect an abnormality in the field winding in real time.
【０００７】本発明は、上記従来技術に鑑み、回転界磁
形回転電機の界磁巻線の異常を運転中に検出することが
できる回転界磁形回転電機の界磁巻線の異常検出方法お
よび異常検出装置を提供することを目的とする。SUMMARY OF THE INVENTION In view of the above prior art, the present invention provides a method for detecting an abnormality of a field winding of a rotating field type rotating electric machine, which can detect an abnormality of a field winding of the rotating field type rotating electric machine during operation. And an abnormality detection device.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決する本発
明の構成は、回転界磁形回転電機の界磁巻線の異常を検
出する異常検出方法であって、前記回転界磁形回転電機
の固定子に備えた検出コイルにより、回転している回転
子の各磁極の磁束量の変化に応じた検出電圧を求め、正
常時での検出電圧のピーク電圧波形と、前記検出電圧の
ピーク電圧波形とを比べることにより界磁巻線の異常を
判定することを特徴とする。According to the present invention, there is provided an abnormality detecting method for detecting an abnormality of a field winding of a rotating field type rotating electric machine. The detection coil provided in the stator of the above, the detection voltage according to the change in the amount of magnetic flux of each magnetic pole of the rotating rotor is determined, the peak voltage waveform of the detection voltage in the normal state, the peak voltage of the detection voltage An abnormality of the field winding is determined by comparing the waveform with the waveform.
【０００９】また本発明の構成は、回転界磁形回転電機
の界磁巻線の異常を検出する異常検出方法であって、前
記回転界磁形回転電機の固定子に備えたホール素子によ
り、回転している回転子の各磁極の磁束量の変化を検出
し、このホール素子の検出信号を微分して検出電圧を求
め、正常時での検出電圧のピーク電圧波形と、前記検出
電圧のピーク電圧波形とを比べることにより界磁巻線の
異常を判定することを特徴とする。The present invention also provides an abnormality detecting method for detecting an abnormality of a field winding of a rotating field type rotating electric machine, wherein the Hall element provided on a stator of the rotating field type rotating electric machine includes: A change in the amount of magnetic flux of each magnetic pole of the rotating rotor is detected, a detection signal is obtained by differentiating the detection signal of the Hall element, a peak voltage waveform of the detection voltage in a normal state, and a peak of the detection voltage. An abnormality of the field winding is determined by comparing the voltage waveform with the voltage waveform.
【００１０】また本発明の構成は、回転界磁形回転電機
の界磁巻線の異常を検出する異常検出装置であって、前
記回転界磁形回転電機の固定子に備えられて、回転して
いる回転子の各磁極の磁束量の変化に応じた検出電圧を
出力する検出コイルと、正常時での検出電圧のピーク電
圧波形が予め設定されており、正常時での検出電圧のピ
ーク電圧波形と、前記検出電圧のピーク電圧波形とを比
べることにより界磁巻線の異常を判定する波形判別器
と、を備えていることを特徴とする。According to another aspect of the present invention, there is provided an abnormality detecting apparatus for detecting an abnormality in a field winding of a rotating field type rotating electric machine, wherein the abnormality detecting device is provided in a stator of the rotating field type rotating electric machine. A detection coil that outputs a detection voltage corresponding to a change in the magnetic flux amount of each magnetic pole of the rotor that has a rotor and a peak voltage waveform of the detection voltage in a normal state are preset, and the peak voltage of the detection voltage in a normal state is set. A waveform discriminator for comparing a waveform with a peak voltage waveform of the detection voltage to determine abnormality of the field winding.
【００１１】また本発明の構成は、回転界磁形回転電機
の界磁巻線の異常を検出する異常検出装置であって、前
記回転界磁形回転電機の固定子に備えられて、回転して
いる回転子の各磁極の磁束量の変化に応じた検出信号を
出力するホール素子と、前記ホール素子から出力される
検出信号を微分して検出電圧を出力する微分器と、正常
時での検出電圧のピーク電圧波形が予め設定されてお
り、正常時での検出電圧のピーク電圧波形と、前記検出
電圧のピーク電圧波形とを比べることにより界磁巻線の
異常を判定する波形判別器と、を備えていることを特徴
とする。According to another aspect of the present invention, there is provided an abnormality detecting device for detecting an abnormality in a field winding of a rotating field type rotating electric machine. A Hall element that outputs a detection signal corresponding to a change in the amount of magnetic flux of each magnetic pole of the rotor, a differentiator that outputs a detection voltage by differentiating the detection signal output from the Hall element, A peak voltage waveform of the detection voltage is set in advance, and a waveform discriminator that determines an abnormality of the field winding by comparing the peak voltage waveform of the detection voltage in a normal state with the peak voltage waveform of the detection voltage. , Is provided.
【００１２】本発明では、回転界磁形回転電機の界磁巻
線の異常、即ち、界磁巻線の部分的短絡や、並列回路を
有する場合での界磁巻線の断線や接続異常が、各磁極の
磁束量の変化として表れることに着目し、磁束量の変化
を固定子側に設けた検出コイルで変圧器起電力として検
出し、この検出した変圧器起電力のピーク電圧波形のパ
ターンより、界磁巻線の異常を判定するようにしてい
る。また、磁束量の変化をホール素子により直接検出
し、検出電圧を微分した信号のピーク電圧波形のパター
ンより、界磁巻線の異常を判定するようにしている。According to the present invention, an abnormality in the field winding of the rotating field type rotating electric machine, that is, a partial short-circuit of the field winding, a disconnection of the field winding and an abnormal connection in the case where the parallel winding circuit is provided. Focusing on the fact that it appears as a change in the amount of magnetic flux of each magnetic pole, the change in the amount of magnetic flux is detected as a transformer electromotive force by a detection coil provided on the stator side, and a pattern of the peak voltage waveform of the detected transformer electromotive force is detected. Thus, the abnormality of the field winding is determined. Further, a change in the amount of magnetic flux is directly detected by the Hall element, and an abnormality in the field winding is determined from a peak voltage waveform pattern of a signal obtained by differentiating the detected voltage.
【００１３】[0013]
【発明の実施の形態】以下に本発明の実施の形態を図面
に基づき詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１４】図１は本発明の実施の形態にかかる、界磁
巻線の異常検出装置１を示す概略構成図である。この異
常検出装置１は、検出コイル（さぐりコイル）２と、ホ
ール素子３と、微分器４と、整流器５と、波形判別器６
とを有している。詳細は後述するが、検出コイル２を用
いて異常検出をするときには、ホール素子３及び微分器
４は使用せず、逆に、ホール素子３及び微分器４を用い
て異常検出をするときには、検出コイル２は使用しな
い。FIG. 1 is a schematic configuration diagram showing a field winding abnormality detecting device 1 according to an embodiment of the present invention. The abnormality detection device 1 includes a detection coil (a search coil) 2, a Hall element 3, a differentiator 4, a rectifier 5, and a waveform discriminator 6.
And Although details will be described later, when detecting an abnormality using the detection coil 2, the Hall element 3 and the differentiator 4 are not used. Conversely, when detecting an abnormality using the Hall element 3 and the differentiator 4, the detection is performed. No coil 2 is used.
【００１５】また、図１に示すように、交流発電機であ
る回転界磁形回転電機２０は、固定子２１や界磁巻線２
７−１〜２７−４を備えている。界磁巻線２７−１〜２
７−４には、整流器２８により交流電流を直流に変換し
た直流電流が供給される。As shown in FIG. 1, a rotating field type rotary electric machine 20 which is an AC generator includes a stator 21 and a field winding 2.
7-1 to 27-4. Field winding 27-1 to 2
A DC current obtained by converting an AC current into a DC current by the rectifier 28 is supplied to 7-4.
【００１６】前記回転界磁形回転電機２０は、図２に示
すように、固定子２１と回転子２５とで構成されてい
る。固定子２１には固定子コイル（図示省略）が巻装さ
れている。一方、回転子２５には、４つの磁極２６−１
〜２６−４が形成されており、各磁極２６−１〜２６−
４には前述した界磁巻線２７−１〜２７−４が巻装され
ている。なお、磁極２６−１，２６−３はＮ極磁極（Ｎ
1 ，Ｎ2 ） であり、磁極２６−２，２６−４はＳ極磁
極（Ｓ1 ，Ｓ2 ） である。また、図２において２２は
鉄心歯部、２３は固定子鉄心であり、１スタックの鉄心
歯部２２の間には通風ダクト２４（図４参照）が形成さ
れている。As shown in FIG. 2, the rotating field type rotary electric machine 20 includes a stator 21 and a rotor 25. A stator coil (not shown) is wound around the stator 21. On the other hand, the rotor 25 has four magnetic poles 26-1.
To 26-4 are formed, and each of the magnetic poles 26-1 to 26-
The field windings 27-1 to 27-4 described above are wound around the reference numeral 4. The magnetic poles 26-1 and 26-3 are N pole magnetic poles (N
1 , N 2 ), and the magnetic poles 26-2, 26-4 are south poles (S 1 , S 2 ). In FIG. 2, reference numeral 22 denotes an iron core tooth, and reference numeral 23 denotes a stator iron core. A ventilation duct 24 (see FIG. 4) is formed between the iron tooth teeth 22 of one stack.
【００１７】上記異常検出器１の検出コイル２を用いて
異常検出をする場合には、検出コイル２を鉄心歯部２２
に装着する。装着する態様としては、図３の矢印（Ａ）
に示すように、検出コイル２を鉄心歯部２２の歯部先端
に巻いたり、または、図３の矢印（Ｂ）に示すように、
検出コイル２を鉄心歯部２２のギャップ面に貼りつけた
りする。このような簡易な装着手法を採用しているた
め、検出コイル２の装着は、固定子２１の組み立て完了
後であっても簡単・容易に行なうことができる。なお、
図３では説明の都合上、２個の検出コイル２を示してい
るが、異常検出をする際には検出コイル２を１つ備える
だけである。When an abnormality is detected using the detection coil 2 of the abnormality detector 1, the detection coil 2 is
Attach to As a mounting mode, an arrow (A) in FIG.
As shown in FIG. 3, the detection coil 2 is wound around the tips of the teeth of the iron core teeth 22, or as shown by the arrow (B) in FIG.
The detection coil 2 is attached to the gap surface of the iron core tooth part 22. Since such a simple mounting method is employed, the mounting of the detection coil 2 can be performed simply and easily even after the completion of the assembly of the stator 21. In addition,
FIG. 3 shows two detection coils 2 for the sake of explanation, but only one detection coil 2 is provided when an abnormality is detected.
【００１８】図４は、検出コイル２を鉄心歯部２２のギ
ャップ面に貼りつけた状態の詳細を示している。同図に
示すように、検出コイル２のリード線２ａには、ヨリを
付けておく。FIG. 4 shows the details of a state in which the detection coil 2 is attached to the gap surface of the iron core tooth portion 22. As shown in the figure, the lead wire 2a of the detection coil 2 has a twist.
【００１９】上述したようにして、１スタックの１つの
鉄心歯部２２に、１つの検出コイル２を備えた状態で、
図２に示すように回転子２５を時計方向に回転させたと
きの信号状態、ならびに、異常検出装置１による異常検
出動作を、図５を参照して説明する。なお図５において
は、界磁巻線２７−１〜２７−４に異常が無い状態での
信号状態を実線で示しており、界磁巻線２７−１〜２７
−４に異常が発生した状態での信号状態を点線で示して
いる。As described above, in a state in which one detection coil 2 is provided on one iron tooth portion 22 of one stack,
The signal state when the rotor 25 is rotated clockwise as shown in FIG. 2 and the abnormality detection operation by the abnormality detection device 1 will be described with reference to FIG. In FIG. 5, the signal state in a state where there is no abnormality in the field windings 27-1 to 27-4 is shown by a solid line, and the field windings 27-1 to 27-4 are shown.
The signal state in the state where an abnormality has occurred is indicated by a dotted line in FIG.
【００２０】まずはじめに、界磁巻線２７−１〜２７−
４に異常が無い状態での信号状態を説明する。First, the field windings 27-1 to 27-
A signal state in a state where there is no abnormality in No. 4 will be described.
【００２１】図２に示す回転界磁形回転電機２０の回転
子２５を、無負荷時において一回転させると、検出コイ
ル２を備えた部分での磁束変化は、図５（ａ）に実線で
示すように変化する。When the rotor 25 of the rotating field type rotary electric machine 20 shown in FIG. 2 is rotated once without load, the change in magnetic flux at the portion provided with the detection coil 2 is indicated by a solid line in FIG. Changes as shown.
【００２２】検出コイル２には、磁束変化に応じた変圧
器起電力（検出電圧）が生じる。このため無負荷時にお
いては、磁束変化が図５（ａ）のように変化するので、
検出コイル２には、図５（ｂ）に実線で示すような電圧
波形の検出電圧ｅ1 が発生する。なお図５中において、
符号〜は電圧波形のうちピーク電圧を示している。In the detection coil 2, a transformer electromotive force (detection voltage) corresponding to a change in magnetic flux is generated. For this reason, when no load is applied, the magnetic flux changes as shown in FIG.
A detection voltage e 1 having a voltage waveform as shown by a solid line in FIG. In FIG. 5,
Symbols 〜 indicate a peak voltage in the voltage waveform.
【００２３】図５（ｂ）に実線で示す検出電圧ｅ1 の波
形は、図５（ａ）に実線で示す磁束変化波形を微分した
ものと等しくなっている。ホール素子３を用いて異常検
出をする場合には（この手法は後述する）、この関係を
利用している。The waveform of the detection voltage e 1 shown by the solid line in FIG. 5B is equal to the waveform obtained by differentiating the magnetic flux change waveform shown by the solid line in FIG. 5A. When an abnormality is detected using the Hall element 3 (this method will be described later), this relationship is used.
【００２４】単相全波整流ブリッジである整流回路５に
より、検出電圧ｅ1 を整流すると、図５（ｃ）に実線で
示す電圧波形となった検出電圧ｅ2 となる。When the detection voltage e 1 is rectified by the rectification circuit 5 which is a single-phase full-wave rectification bridge, the detection voltage e 2 has a voltage waveform shown by a solid line in FIG. 5C.
【００２５】なお、遅れ力率で負荷運転している時に
は、検出コイル２には、図５（ｄ）に実線で示す電圧波
形となった検出電圧ｅ3 が発生し、進み力率で負荷運転
している時には、検出コイル２には、図５（ｅ）に実線
で示す電圧波形となった検出電圧ｅ4 が発生する。During load operation with a delayed power factor, a detection voltage e 3 having a voltage waveform shown by a solid line in FIG. 5A, a detection voltage e 4 having a voltage waveform shown by a solid line in FIG. 5E is generated in the detection coil 2.
【００２６】検出電圧ｅ3 や検出電圧ｅ4 を全波整流し
たときにも、図５（ｃ）に示すのと同様な電圧波形の検
出電圧が得られる。When the detection voltage e 3 or the detection voltage e 4 is full-wave rectified, a detection voltage having a voltage waveform similar to that shown in FIG. 5C is obtained.
【００２７】以上のように、界磁巻線２７−１〜２７−
４に異常が無い状態では、検出電圧ｅ2 の電圧波形の奇
数のピーク電圧ならびに偶数番号のピーク電圧
はそれぞれ等しく規則性をもつ。As described above, the field windings 27-1 to 27-
In the state there is no abnormality in the 4, odd peak voltage of the peak voltage and the even number of the voltage waveform of the detection voltage e 2 has a respective equal regularity.
【００２８】波形判別器６には、図５（ｃ）に示すよう
な、正常時のピーク電圧波形パターンが予め設定されて
いる。In the waveform discriminator 6, a normal peak voltage waveform pattern as shown in FIG.
【００２９】次に、磁極２６−２（Ｓ1 ）に備えた界磁
巻線２７−２に異常が発生した時の状態を状態を説明す
る。Next, the state when an abnormality occurs in the field winding 27-2 provided for the magnetic pole 26-2 (S 1 ) will be described.
【００３０】この場合には、磁極２６−２での磁束が減
少するため、磁束変化パターンは図５（ａ）に点線で示
すように減少し、検出電圧ｅ1 ，ｅ2 ，ｅ3 ，ｅ4 ，は
図５（ｂ）〜（ｅ）に示すようにピーク電圧’’が
減少して規則性が失われる。つまり、異常発生時にはピ
ーク電圧波形パターンは、正常時のピーク電圧波形パタ
ーンと異なってくる。In this case, since the magnetic flux at the magnetic pole 26-2 decreases, the magnetic flux change pattern decreases as indicated by the dotted line in FIG. 5A, and the detection voltages e 1 , e 2 , e 3 , e 4 , the peak voltage ″ is reduced and the regularity is lost, as shown in FIGS. That is, when an abnormality occurs, the peak voltage waveform pattern is different from the normal peak voltage waveform pattern.
【００３１】波形判別器６は、検出電圧ｅ2 のピーク電
圧波形を判別しており、このピーク電圧波形が、予め設
定している正常時のピーク電圧波形と異なった場合、即
ち、検出電圧ｅ2 のピーク電圧が正常時のピーク電圧よ
りも減少して規則性を失った場合には、界磁巻線に異常
が発生したと判定して、異常警報信号Ａを出力する。The waveform discriminator 6 discriminates the peak voltage waveform of the detection voltage e 2. If this peak voltage waveform is different from the preset normal peak voltage waveform, that is, the detection voltage e 2 When the peak voltage of No. 2 is lower than the normal peak voltage and loses regularity, it is determined that an abnormality has occurred in the field winding, and an abnormality alarm signal A is output.
【００３２】このように異常検出装置１によれば、回転
界磁形回転電機２０の運転中であっても、界磁巻線の異
常を検出することができ、界磁巻線のモニタリングシス
テムとして使用することができる。As described above, according to the abnormality detecting device 1, an abnormality of the field winding can be detected even during the operation of the rotating field type rotary electric machine 20, and the monitoring system for the field winding can be used. Can be used.
【００３３】上述した例は検出コイル２を用いている
が、ホール素子３を用いることもできる。つまり、ホー
ル素子３を鉄心歯部２２に備えて、図５（ａ）に示すよ
うな磁束変化をとらえる。このホール素子３の検出信号
を微分器４で微分すると、図５（ｂ）（ｄ）（ｅ）に示
すのと同じ電圧波形が得られる。そこで微分した信号を
整流器５で整流し、波形判別器６で判別することにより
界磁巻線の異常を判定することができる。Although the above-described example uses the detection coil 2, a Hall element 3 can be used. That is, the Hall element 3 is provided in the iron core tooth portion 22, and a magnetic flux change as shown in FIG. When the detection signal of the Hall element 3 is differentiated by the differentiator 4, the same voltage waveform as shown in FIGS. 5B, 5D and 5E is obtained. Then, the differentiated signal is rectified by the rectifier 5 and is discriminated by the waveform discriminator 6, whereby the abnormality of the field winding can be determined.
【００３４】[0034]
【発明の効果】本発明によれば、回転界磁形回転電機の
運転中であっても、界磁巻線の異常が検出できる。よっ
て界磁巻線のモニタリングシステムとして使用できる。According to the present invention, an abnormality in the field winding can be detected even during the operation of the rotating field type rotary electric machine. Therefore, it can be used as a monitoring system for field windings.
【００３５】また本発明によれば、界磁巻線の異常判定
のためには、検出コイルやホール素子を、固定子鉄心の
１スタックの鉄心歯部に１個だけ取り付けるだけでよい
ため、検出コイルやホール素子の取り付けは極めて簡単
であり、安価に本発明の実行ができる。また検出コイル
やホール素子の取り付けは簡単であるため、固定子を組
み立てて完成した後でも、検出コイルやホール素子の取
り付けができる。According to the present invention, only one detection coil or Hall element needs to be attached to the iron teeth of one stack of the stator core to determine the abnormality of the field winding. The installation of the coil and the Hall element is extremely simple, and the present invention can be implemented at low cost. Further, since the mounting of the detection coil and the Hall element is simple, the detection coil and the Hall element can be mounted even after the stator is assembled and completed.
【図１】本発明の実施の形態にかかる異常検出装置を示
す概略構成図。FIG. 1 is a schematic configuration diagram showing an abnormality detection device according to an embodiment of the present invention.
【図２】回転界磁形回転電機の概略を示す構成図。FIG. 2 is a configuration diagram schematically showing a rotating field type rotary electric machine.
【図３】検出コイルの取り付け状態を示す斜視図。FIG. 3 is a perspective view showing a mounting state of a detection coil.
【図４】検出コイルの取り付け状態を示す斜視図。FIG. 4 is a perspective view showing a mounting state of a detection coil.
【図５】検出信号の波形を示す波形図。FIG. 5 is a waveform chart showing a waveform of a detection signal.
１ 異常検出器 ２ 検出コイル ２ａ リード線 ３ ホール素子 ４ 微分器 ５ 整流器 ６ 波形判別器 ２０ 回転界磁形回転電機 ２１ 固定子 ２２ 鉄心歯部 ２３ 固定子鉄心 ２４ 通風ダクト ２５ 回転子 ２６−１〜２６−４ 磁極 ２７−１〜２７−４ 界磁巻線 ２８ 整流器 DESCRIPTION OF SYMBOLS 1 Abnormality detector 2 Detection coil 2a Lead wire 3 Hall element 4 Differentiator 5 Rectifier 6 Waveform discriminator 20 Rotating field type rotary electric machine 21 Stator 22 Iron core part 23 Stator iron core 24 Ventilation duct 25 Rotor 26-1 26-4 Magnetic poles 27-1 to 27-4 Field winding 28 Rectifier
Claims (4)
検出する異常検出方法であって、 前記回転界磁形回転電機の固定子に備えた検出コイルに
より、回転している回転子の各磁極の磁束量の変化に応
じた検出電圧を求め、 正常時での検出電圧のピーク電圧波形と、前記検出電圧
のピーク電圧波形とを比べることにより界磁巻線の異常
を判定することを特徴とする回転界磁形回転電機の界磁
巻線の異常検出方法。An abnormality detection method for detecting an abnormality of a field winding of a rotating field type rotating electric machine, wherein the rotating coil is rotated by a detection coil provided on a stator of the rotating field type rotating electric machine. A detection voltage corresponding to a change in the magnetic flux amount of each magnetic pole of the element is obtained, and an abnormality of the field winding is determined by comparing a peak voltage waveform of the detection voltage in a normal state with the peak voltage waveform of the detection voltage. A method for detecting an abnormality in a field winding of a rotating field type rotary electric machine, characterized by the above-mentioned.
検出する異常検出方法であって、 前記回転界磁形回転電機の固定子に備えたホール素子に
より、回転している回転子の各磁極の磁束量の変化を検
出し、このホール素子の検出信号を微分して検出電圧を
求め、 正常時での検出電圧のピーク電圧波形と、前記検出電圧
のピーク電圧波形とを比べることにより界磁巻線の異常
を判定することを特徴とする回転界磁形回転電機の界磁
巻線の異常検出方法。2. An abnormality detecting method for detecting an abnormality of a field winding of a rotating field type rotating electric machine, wherein the rotating element is rotated by a Hall element provided on a stator of the rotating field type rotating electric machine. A change in the amount of magnetic flux of each magnetic pole of the element is detected, a detection signal is obtained by differentiating the detection signal of the Hall element, and a peak voltage waveform of the detection voltage in a normal state is compared with the peak voltage waveform of the detection voltage. A method for detecting an abnormality in a field winding of a rotating field type rotating electric machine, comprising:
検出する異常検出装置であって、 前記回転界磁形回転電機の固定子に備えられて、回転し
ている回転子の各磁極の磁束量の変化に応じた検出電圧
を出力する検出コイルと、 正常時での検出電圧のピーク電圧波形が予め設定されて
おり、正常時での検出電圧のピーク電圧波形と、前記検
出電圧のピーク電圧波形とを比べることにより界磁巻線
の異常を判定する波形判別器と、 を備えていることを特徴とする回転界磁形回転電機の界
磁巻線の異常検出装置。3. An abnormality detection device for detecting an abnormality of a field winding of a rotating field type rotating electric machine, wherein the abnormality detecting device is provided in a stator of the rotating field type rotating electric machine and includes a rotating rotor. A detection coil that outputs a detection voltage corresponding to a change in the magnetic flux amount of each magnetic pole, and a peak voltage waveform of the detection voltage in a normal state are set in advance. A waveform discriminator for judging an abnormality of the field winding by comparing the peak voltage waveform of the voltage with a peak voltage waveform of the field winding.
検出する異常検出装置であって、 前記回転界磁形回転電機の固定子に備えられて、回転し
ている回転子の各磁極の磁束量の変化に応じた検出信号
を出力するホール素子と、 前記ホール素子から出力される検出信号を微分して検出
電圧を出力する微分器と、 正常時での検出電圧のピーク電圧波形が予め設定されて
おり、正常時での検出電圧のピーク電圧波形と、前記検
出電圧のピーク電圧波形とを比べることにより界磁巻線
の異常を判定する波形判別器と、 を備えていることを特徴とする回転界磁形回転電機の界
磁巻線の異常検出装置。4. An abnormality detecting device for detecting an abnormality of a field winding of a rotating field type rotating electric machine, wherein the abnormality detecting device is provided in a stator of the rotating field type rotating electric machine, A Hall element that outputs a detection signal corresponding to a change in the amount of magnetic flux of each magnetic pole, a differentiator that outputs a detection voltage by differentiating the detection signal output from the Hall element, and a peak voltage of the detection voltage in a normal state. A waveform discriminator whose waveform is set in advance and which determines the abnormality of the field winding by comparing the peak voltage waveform of the detected voltage in a normal state with the peak voltage waveform of the detected voltage. An apparatus for detecting an abnormality in a field winding of a rotating field type rotating electric machine, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8185716A JPH1032962A (en) | 1996-07-16 | 1996-07-16 | Method and device for detecting abnormality in field coil winding of rotary field type rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8185716A JPH1032962A (en) | 1996-07-16 | 1996-07-16 | Method and device for detecting abnormality in field coil winding of rotary field type rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1032962A true JPH1032962A (en) | 1998-02-03 |
Family
ID=16175609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8185716A Withdrawn JPH1032962A (en) | 1996-07-16 | 1996-07-16 | Method and device for detecting abnormality in field coil winding of rotary field type rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1032962A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1180847A1 (en) * | 2000-08-19 | 2002-02-20 | Johnson Electric S.A. | Electric motor |
| JP2010091551A (en) * | 2008-07-29 | 2010-04-22 | Eskom Holdings (Pty) Ltd | Method and system for processing stray magnetic flux |
| JP6020752B1 (en) * | 2016-03-16 | 2016-11-02 | 富士電機株式会社 | Diagnostic equipment |
| JP6949287B1 (en) * | 2021-03-10 | 2021-10-13 | 三菱電機株式会社 | Short circuit detection device for rotary electric machines |
-
1996
- 1996-07-16 JP JP8185716A patent/JPH1032962A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1180847A1 (en) * | 2000-08-19 | 2002-02-20 | Johnson Electric S.A. | Electric motor |
| US6703731B2 (en) | 2000-08-19 | 2004-03-09 | Johnson Electric S.A. | Electric motor |
| JP2010091551A (en) * | 2008-07-29 | 2010-04-22 | Eskom Holdings (Pty) Ltd | Method and system for processing stray magnetic flux |
| JP6020752B1 (en) * | 2016-03-16 | 2016-11-02 | 富士電機株式会社 | Diagnostic equipment |
| US9772357B1 (en) | 2016-03-16 | 2017-09-26 | Fuji Electric Co., Ltd. | Diagnostic apparatus |
| JP6949287B1 (en) * | 2021-03-10 | 2021-10-13 | 三菱電機株式会社 | Short circuit detection device for rotary electric machines |
| WO2022190236A1 (en) * | 2021-03-10 | 2022-09-15 | 三菱電機株式会社 | Short circuit detection device for rotating electrical machine |
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