JPH08251873A - Method and device for measuring property of rotating electric machine - Google Patents
Method and device for measuring property of rotating electric machineInfo
- Publication number
- JPH08251873A JPH08251873A JP7045411A JP4541195A JPH08251873A JP H08251873 A JPH08251873 A JP H08251873A JP 7045411 A JP7045411 A JP 7045411A JP 4541195 A JP4541195 A JP 4541195A JP H08251873 A JPH08251873 A JP H08251873A
- Authority
- JP
- Japan
- Prior art keywords
- stator core
- core
- winding
- rotating machine
- magnetic flux
- 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
- 238000000034 method Methods 0.000 title claims description 17
- 230000004907 flux Effects 0.000 claims abstract description 43
- 238000004804 winding Methods 0.000 claims abstract description 43
- 239000011162 core material Substances 0.000 claims description 146
- 238000005259 measurement Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 73
- 230000005611 electricity Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 description 27
- 230000005415 magnetization Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002505 iron Chemical class 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転機の無負荷特性を
測定する回転機の特性測定方法および測定装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating machine characteristic measuring method and measuring apparatus for measuring a no-load characteristic of a rotating machine.
【０００２】[0002]
【従来の技術】一般に、珪素鋼板等により製造される鉄
心を備えた回転機の無負荷特性は、実機製作後、回転機
としての特性試験により実測される。鉄心に関する無負
荷特性としては、無負荷電流と無負荷損失が挙げられる
が、これに対し、鉄心の素材特性は、一般にエプスタイ
ン試験特性やリング磁気特性で与えられる磁化力、励磁
実効電流および鉄損がある。2. Description of the Related Art Generally, the no-load characteristics of a rotating machine provided with an iron core made of a silicon steel plate or the like are actually measured by a characteristic test as a rotating machine after the actual machine is manufactured. The no-load characteristics of the iron core include no-load current and no-load loss.On the other hand, the material characteristics of the iron core are generally the magnetizing force, the effective magnetizing current and the iron loss given by the Epstein test characteristics and ring magnetic characteristics. There is.
【０００３】[0003]
【発明が解決しようとする課題】回転機の無負荷電流
は、鉄心素材に加わる起磁力成分の他に、ギャップに加
わる成分も含んでおり、また、鉄心のコアバックと呼ば
れる鉄心のリング部と鉄心歯部とでは流れる磁束量が異
なる。さらに、鉄心の各部分において磁束密度も異な
り、さらに起磁力の量も異なる。このため、素材特性試
験を行なっても、回転機として、あるいは鉄心としての
特性を正確に知ることができない。The no-load current of the rotating machine includes a magnetomotive force component added to the iron core material and a component added to the gap. Further, the no-load current of the iron core ring portion of the iron core is called a core back of the iron core. The amount of magnetic flux flowing differs from that of the iron core teeth. Furthermore, the magnetic flux density is different in each part of the iron core, and the amount of magnetomotive force is also different. For this reason, even if a material characteristic test is performed, the characteristics as a rotating machine or as an iron core cannot be accurately known.
【０００４】また、回転機としては、固定子鉄心はフレ
ームに配設され、また各部にボルト等も使用されてい
る。これらの構成要素が存在することによっても、回転
機として、あるいは鉄心としての特性を正確に知ること
ができない。In the rotating machine, the stator core is arranged on the frame, and bolts and the like are used for each part. Due to the presence of these components, the characteristics of the rotating machine or the iron core cannot be accurately known.
【０００５】本発明は上記事情に鑑みてなされたもので
あり、その目的は、回転機の無負荷特性を精度良くしか
も簡単に測定することができる回転機の特性測定方法お
よび測定装置を提供するにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a characteristic measuring method and a measuring device for a rotating machine capable of accurately and easily measuring the no-load characteristic of the rotating machine. It is in.
【０００６】[0006]
【課題を解決するための手段】第１の手段は、固定子鉄
心と、この固定子鉄心のスロットにトロイダル状に１極
ごとに巻回され、各スロットの巻回数が、固定子鉄心の
歯部の磁束分布が正弦波状になるように設定された巻線
と、前記巻線に電力を供給して無負荷特性を測定する測
定手段とを含んで構成されている（請求項１の発明）。[Means for Solving the Problems] A first means is to wind a stator core and slots of the stator core in a toroidal manner for each pole. It is configured to include a winding set so that the magnetic flux distribution of the portion is sinusoidal, and a measuring unit that supplies electric power to the winding to measure the no-load characteristic (the invention of claim 1). .
【０００７】第２の手段は、固定子鉄心のスロットに対
し、１極ごとに巻線をトロイダル状に巻回すると共に、
その巻回数を固定子鉄心の歯部の磁束分布が正弦波状に
なるように設定し、この固定子鉄心内に回転子鉄心を配
置し、前記巻線に電力を供給して無負荷特性を測定する
ようにところに特徴を有する（請求項２の発明）。The second means is to wind the winding in a toroidal shape for each pole in the slot of the stator core,
The number of turns is set so that the magnetic flux distribution in the teeth of the stator core is sinusoidal, the rotor core is placed in this stator core, and power is supplied to the windings to measure the no-load characteristics. As described above, there is a feature (the invention of claim 2).
【０００８】第３の手段は、被測定物たる固定子鉄心の
スロットに対し、１極ごとに巻線をトロイダル状に巻回
すると共に、その巻回数を固定子鉄心の歯部の磁束分布
が正弦波状になるように設定し、この固定子鉄心内に、
既知の異なる素材特性をもつ鉄心材料からなる複数個の
回転子鉄心を順次択一的に配置し、各回転子鉄心配置ご
とに前記巻線に電力を供給して無負荷特性をそれぞれ測
定し、その測定結果から前記被測定物たる固定子鉄心あ
るいは回転子鉄心の損失特性を測定するようにしたとこ
ろに特徴を有する（請求項３の発明）。A third means is to wind a winding in a toroidal shape for each pole in a slot of a stator core which is an object to be measured, and the number of windings is determined by the magnetic flux distribution of the teeth of the stator core. Set it to be a sine wave, and in this stator core,
A plurality of rotor cores made of iron core materials having different known material properties are sequentially and alternately arranged, and power is supplied to the windings for each rotor core arrangement to measure no-load characteristics, respectively. It is characterized in that the loss characteristic of the stator core or the rotor core as the object to be measured is measured from the measurement result (the invention of claim 3).
【０００９】第４の手段は、第３の手段において発生損
失が既知となった回転子鉄心の一つを用い、被測定物た
る固定子鉄心のスロットに対し、１極ごとに巻線をトロ
イダル状に巻回すると共に、その巻回数を固定子鉄心の
歯部の磁束分布が正弦波状になるように設定し、この固
定子鉄心内に、前記回転子鉄心を配置し、前記巻線に電
力を供給して無負荷特性を測定し、その測定結果から前
記被測定物たる固定子鉄心の損失特性を測定するように
したところに特徴を有する（請求項４の発明）。The fourth means uses one of the rotor cores whose loss is known in the third means, and a toroidal winding is provided for each pole with respect to the slot of the stator core which is the object to be measured. In addition, the number of turns is set so that the magnetic flux distribution of the teeth of the stator core becomes sinusoidal, and the rotor core is placed in this stator core, and the Is supplied to measure the unloaded characteristic, and the loss characteristic of the stator core as the object to be measured is measured from the measurement result (the invention of claim 4).
【００１０】第５の手段は、固定子鉄心のスロットに対
し、１極ごとに巻線をトロイダル状に巻回すると共に、
その巻回数を固定子鉄心の歯部の磁束分布が正弦波状に
なるように設定し、この固定子鉄心内に回転子鉄心を配
置し、且つ、前記固定子鉄心にフレーム等を配設して実
機回転機とほぼ同じ構成状態とし、前記巻線に電力を供
給して無負荷特性を測定するようにしたところに特徴を
有する（請求項５の発明）。A fifth means is to wind the winding in a toroidal shape for each pole in the slot of the stator core, and
The number of turns is set so that the magnetic flux distribution of the teeth of the stator core is sinusoidal, the rotor core is arranged in this stator core, and a frame or the like is arranged in the stator core. The present invention is characterized in that the configuration is substantially the same as that of an actual rotating machine, and electric power is supplied to the winding to measure the no-load characteristic (the invention of claim 5).
【００１１】[0011]
【作用】第１の手段においては、固定子鉄心の内部に、
回転子鉄心を配置した上で、巻線に通電すると、これに
よって発生した磁束は、回転機運転時と同様に、固定子
鉄心からギャップを経て回転子鉄心にわたり、そしてギ
ャップを通って固定子鉄心に戻る磁気回路を流れること
になる。この場合、固定子鉄心の歯部を流れる磁束は、
回転機運転時と同様に正弦波状に分布する。従って、通
電電流は、この磁束の流れを反映した値を示し、また損
失もこの磁束により発生する値を示すようになる。すな
わち、回転機の運転時の無負荷特性と対応した特性値
を、精度良くしかも簡単に測定できるものである。In the first means, inside the stator core,
When the rotor core is placed and the winding is energized, the magnetic flux generated by this is the same as when the rotor is running, and the magnetic flux is generated from the stator core through the gap to the rotor core, and through the gap to the stator core. It will flow back to the magnetic circuit. In this case, the magnetic flux flowing through the teeth of the stator core is
The distribution is sinusoidal, as when rotating the machine. Therefore, the energizing current shows a value reflecting the flow of this magnetic flux, and the loss also shows a value generated by this magnetic flux. That is, the characteristic value corresponding to the no-load characteristic during operation of the rotating machine can be measured accurately and easily.
【００１２】第２の手段においては、巻線に通電する
と、第１の手段と同様に、磁束が発生し、固定子鉄心の
歯部を流れる磁束は、回転機運転時と同様に正弦波状に
分布する。従って、通電電流は、この磁束の流れを反映
した値を示し、また損失もこの磁束により発生する値を
示すようになる。すなわち、回転機の運転時の無負荷特
性と対応した特性値を精度良くしかも簡単に測定できる
ものである。In the second means, when the winding is energized, a magnetic flux is generated in the same manner as in the first means, and the magnetic flux flowing through the teeth of the stator core becomes a sinusoidal waveform as in the rotating machine operation. To be distributed. Therefore, the energizing current shows a value reflecting the flow of this magnetic flux, and the loss also shows a value generated by this magnetic flux. That is, the characteristic value corresponding to the no-load characteristic during operation of the rotating machine can be accurately and easily measured.
【００１３】第３の手段においては、固定子鉄心内に、
既知の異なる素材特性をもつ鉄心材料からなる複数個の
回転子鉄心を順次択一的に配置し、各回転子鉄心配置ご
とに前記巻線に電力を供給して無負荷特性をそれぞれ測
定することにより、その測定結果は、固定子鉄心の無負
荷特性を判定するのに都合の良い傾向を示す。その測定
結果から前記被測定物たる固定子鉄心あるいは回転子鉄
心の損失特性を測定することにより、固定子鉄心あるい
は回転子鉄心の損失特性をほぼ精度良くしかも簡単に知
ることができる。In the third means, in the stator core,
A plurality of rotor cores made of core materials having different known material characteristics are sequentially and selectively arranged, and the no-load characteristics are measured by supplying power to the windings for each rotor core arrangement. Thus, the measurement result shows a tendency that is convenient for determining the no-load characteristic of the stator core. By measuring the loss characteristics of the stator core or the rotor core, which is the object to be measured, from the measurement results, the loss characteristics of the stator core or the rotor core can be known almost accurately and easily.
【００１４】第４の手段においては、第３の手段におい
て発生損失が既知となった回転子鉄心の一つを、固定子
鉄心内に配置し、前記巻線に電力を供給して無負荷特性
を測定し、その測定結果から被測定物たる固定子鉄心の
損失特性を測定するから、固定子鉄心の無負荷時の損失
特性を精度良くしかも簡単に知ることができる。In the fourth means, one of the rotor cores whose loss has been known in the third means is arranged in the stator core, and electric power is supplied to the windings to provide no-load characteristics. Is measured and the loss characteristic of the stator core, which is the object to be measured, is measured from the measurement result, so that the loss characteristic of the stator core under no load can be accurately and easily known.
【００１５】第５の手段においては、固定子鉄心内に回
転子鉄心を配置し、且つ、前記固定子鉄心にフレーム等
を配設して実機回転機とほぼ同じ構成状態とし、この構
成状態で、巻線に電力を供給して無負荷特性を測定する
ようにしたから、実機回転機とほぼ一致する特性結果が
得られるようになる。In the fifth means, a rotor core is arranged in the stator core, and a frame or the like is arranged in the stator core so that the rotor core has substantially the same configuration as that of the actual rotating machine. Since the electric power is supplied to the winding to measure the no-load characteristic, it is possible to obtain the characteristic result which is almost the same as that of the actual rotating machine.
【００１６】[0016]
【実施例】以下、本発明の第１の実施例（請求項１およ
び２に関連する実施例）につき図１ないし図３を参照し
ながら説明する。図１には、実機回転機の固定子鉄心１
と回転子鉄心２とを示している。回転機としては、４
極、２．２ｋｗ誘導電動機を励磁している。固定子鉄心
１のスロットＳ０，Ｓ１，Ｓ２，…には、トロイダル状
に巻線３を１極ごとに施している。この場合、その巻回
数は、固定子鉄心１の歯部１ａの磁束分布が正弦波状に
なるように設定されている。具体的には、下記式１で巻
回数Ｎが決定され、その決定例は、下記表１の通りであ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention (an embodiment relating to claims 1 and 2) will be described below with reference to FIGS. FIG. 1 shows a stator core 1 of an actual rotating machine.
And the rotor core 2 are shown. As a rotating machine, 4
The pole is exciting a 2.2 kw induction motor. Toroidal windings 3 are provided for each pole in the slots S0, S1, S2, ... Of the stator core 1. In this case, the number of turns is set so that the magnetic flux distribution of the tooth portion 1a of the stator core 1 has a sinusoidal shape. Specifically, the number of windings N is determined by the following formula 1, and an example of the determination is as shown in Table 1 below.
【００１７】[0017]
【数１】 上記ｋは任意の定数であり、これは測定装置に応じて決
定されるものであり、この場合ｋ＝１００とし、また、
１極当りのスロット数ｓを９としている。[Equation 1] The above k is an arbitrary constant, which is determined according to the measuring device. In this case, k = 100, and
The number of slots s per pole is 9.
【００１８】[0018]
【表１】 [Table 1]
【００１９】上記固定子鉄心１の内部には均一なギャッ
プを介して回転子鉄心２を配置している。図３には、測
定手段たる測定回路４を示している。巻線３は一次コイ
ルとされ、交流電源５より入力される電力を電力計６で
測定、励磁電流（通電電流）を実効値電流計７で測定す
る。また、磁化力は、励磁電流のピーク値により求めら
れるものである。なお８は周波数計である。A rotor core 2 is arranged inside the stator core 1 with a uniform gap. FIG. 3 shows a measuring circuit 4 as a measuring means. The winding 3 is a primary coil, and the electric power input from the AC power source 5 is measured by the wattmeter 6 and the exciting current (energized current) is measured by the effective value ammeter 7. Further, the magnetizing force is obtained from the peak value of the exciting current. In addition, 8 is a frequency meter.
【００２０】さて、巻線３に通電すると、これにより発
生した磁束Φは、図２に示すように、回転機運転時と同
様に、固定子鉄心１からギャップを経て回転子鉄心２に
わたり、そしてギャップを通って固定子鉄心１に戻る磁
気回路を流れるようになる。この場合、固定子鉄心１の
歯部１ａを流れる磁束は、回転機運転時と同様に正弦波
状に分布する。従って、上記測定回路において測定され
る通電電流は、この磁束の流れを反映した値を示し、ま
た損失もこの磁束により発生する値を示すようになる。
すなわち、回転機の運転時の無負荷特性と対応した特性
値を測定できるものである。When the winding 3 is energized, as shown in FIG. 2, the magnetic flux Φ generated by the winding 3 extends from the stator core 1 through the gap to the rotor core 2 as in the operation of the rotating machine, and It will flow through the magnetic circuit returning to the stator core 1 through the gap. In this case, the magnetic flux flowing through the tooth portion 1a of the stator core 1 is distributed in a sinusoidal shape as in the operation of the rotating machine. Therefore, the energizing current measured in the measuring circuit shows a value reflecting the flow of this magnetic flux, and the loss also shows a value generated by this magnetic flux.
That is, it is possible to measure the characteristic value corresponding to the no-load characteristic when the rotating machine is in operation.
【００２１】次に、本発明の第２の実施例（請求項３に
関連する実施例）について、図４および表２，表３を参
照しながら説明する。この第２の実施例では、図１に示
した固定子鉄心１の無負荷特性を測定する方法であり、
この場合、固定子鉄心１には第１の実施例と同様に巻線
３をトロイダル状で且つ磁束が歯部１ａで正弦波となる
ように巻回している。そして、第１の実施例と異なる点
は、回転子鉄心として、既知の異なる素材特性をもつ鉄
心材料からなる複数個例えば５個の回転子鉄心（イ）〜
（ホ）を用いている。この回転子鉄心（イ）〜（ホ）の
鉄心材料は、表２および表３の素材特性の欄に示す鉄損
特性および磁化力となっている。Next, a second embodiment of the present invention (embodiment related to claim 3) will be described with reference to FIG. 4 and Tables 2 and 3. This second embodiment is a method for measuring the no-load characteristics of the stator core 1 shown in FIG.
In this case, the winding 3 is wound around the stator core 1 in a toroidal manner and the magnetic flux becomes a sine wave at the tooth portion 1a as in the first embodiment. The difference from the first embodiment is that, as the rotor core, a plurality of rotor cores (a) made of iron core materials having different known material characteristics are used.
(E) is used. The core materials of the rotor cores (a) to (e) have the iron loss characteristics and the magnetizing force shown in the column of material characteristics in Tables 2 and 3.
【００２２】[0022]
【表２】 [Table 2]
【００２３】[0023]
【表３】 [Table 3]
【００２４】しかして、固定子鉄心１に対して、回転子
鉄心（イ）〜（ホ）を順次択一的に配置し、各回転子鉄
心配置ごとに前記巻線３に電力を供給して無負荷特性こ
の場合鉄損をそれぞれ測定する。図４には、その測定結
果を示している。同図において、横軸には、鉄心素材の
鉄損値（鉄心周方向の鉄損値）をとり、縦軸には、この
実施例方法で求めた鉄損値をとっている。同図中の、特
性線Ｗ１０／５０、特性線Ｗ１５／５０および特性線Ｗ
１７／５０は、通電周波数がいずれも５０で、磁束密度
がそれぞれ１０、１５、１７Ｔｅｓｌａの場合での鉄損
測定結果を示している。However, the rotor cores (a) to (e) are sequentially and selectively arranged with respect to the stator core 1, and electric power is supplied to the winding 3 for each rotor core arrangement. No-load characteristics In this case, iron loss is measured. FIG. 4 shows the measurement result. In the figure, the horizontal axis represents the iron loss value of the iron core material (iron loss value in the circumferential direction of the iron core), and the vertical axis represents the iron loss value obtained by the method of this example. Characteristic line W10 / 50, characteristic line W15 / 50 and characteristic line W in FIG.
17/50 shows the iron loss measurement results when the energization frequency is 50 and the magnetic flux densities are 10, 15, and 17 Tesla, respectively.
【００２５】すなわち、各回転子鉄心（イ）〜（ホ）を
用いたときの、測定鉄損は、同図中の点イ〜ホで示され
る。そして、各点をプロットし、外挿法により、回転子
鉄心の素材値が零、すなわち縦軸に交差した点を求め
る。これにより、回転子鉄心での発生損失が無く、固定
子鉄心１のみの鉄損が分かる。ちなみに、特性線Ｗ１０
／５０の場合には、鉄損（実磁路時鉄損）が０．８３Ｗ
／ｋｇ、特性線Ｗ１５／５０の場合には、鉄損が１．７
７Ｗ／ｋｇ、および特性線Ｗ１７／５０の場合には、鉄
損が２．２１Ｗ／ｋｇとなることが分かる。That is, the measured iron loss when each of the rotor cores (a) to (e) is used is shown by points a to e in the figure. Then, each point is plotted and the material value of the rotor core is zero, that is, the point intersecting the vertical axis is obtained by extrapolation. Thereby, there is no loss generated in the rotor core, and the iron loss of only the stator core 1 is known. By the way, characteristic line W10
In case of / 50, iron loss (iron loss in actual magnetic path) is 0.83W
/ Kg, characteristic line W15 / 50, iron loss is 1.7
It can be seen that the iron loss is 2.21 W / kg in the case of 7 W / kg and the characteristic line W17 / 50.
【００２６】このとき、同図から、回転子鉄心（イ）〜
（ホ）の鉄損も測定できるものである。すなわち、同図
の各点イ〜ホは、固定子鉄心および回転子鉄心の合計の
鉄損であるから、この鉄損から固定子鉄心１の鉄損を差
し引くことで、各回転子鉄心（イ）〜（ホ）の鉄損特性
が分かる。At this time, from the figure, the rotor core (a) to
The iron loss of (e) can also be measured. That is, since each point a to e in the figure is the total iron loss of the stator core and the rotor core, by subtracting the iron loss of the stator core 1 from this iron loss, each rotor core (a ) ~ (E) Iron loss characteristics are known.
【００２７】図５は本発明の第３の実施例（請求項４に
関連する実施例）を示している。この実施例において
は、前述の第２の実施例において、発生損失この場合鉄
損が既知となった回転子鉄心（イ）〜（ホ）の一つ（こ
れを回転子鉄心Ｋと称する）を、被測定物たる固定子鉄
心１の損失特性を測定するようにしている。すなわち、
巻線３に通電すると（通電周波数５０で、発生磁束密度
が１０，１５および１７Ｔｅｓｌａのいずれかとなるよ
うに通電する）、図４にて述べたように、固定子鉄心１
と回転子鉄心Ｋとの合計の鉄損（実磁路時鉄損）が判明
する。この鉄損から回転子鉄心Ｋの鉄損を差し引くこと
で固定子鉄心１の鉄損がわかる。ただし、この測定方法
で使用する回転子鉄心Ｋの材質としては、磁束が歪んで
測定に影響を与えないように、磁化特性が良好で、飽和
磁束密度が十分高いものを選ぶのが好ましい。FIG. 5 shows a third embodiment of the present invention (an embodiment related to claim 4). In this embodiment, one of the rotor cores (a) to (e) whose iron loss has become known in this case in the second embodiment (hereinafter referred to as the rotor core K) is used. The loss characteristic of the stator core 1 as the object to be measured is measured. That is,
When the winding 3 is energized (at the energization frequency of 50, the generated magnetic flux density is 10, 15, or 17 Tesla), as described with reference to FIG.
And the total iron loss of the rotor core K (iron loss during actual magnetic path) are determined. By subtracting the iron loss of the rotor core K from this iron loss, the iron loss of the stator core 1 can be known. However, as the material of the rotor core K used in this measuring method, it is preferable to select a material having good magnetization characteristics and a sufficiently high saturation magnetic flux density so that the magnetic flux is not distorted and affects the measurement.
【００２８】図６は本発明の第４の実施例（請求項５に
関連する実施例）を示している。この実施例において
は、固定子鉄心１内に回転子鉄心２を配置し、且つ、前
記固定子鉄心１にフレーム１１や図示しない通しボルト
を配設して実機回転機とほぼ同じ構成状態とし、この構
成状態で、巻線３に電力を供給して無負荷特性を測定す
るようにしている。FIG. 6 shows a fourth embodiment of the present invention (an embodiment related to claim 5). In this embodiment, a rotor core 2 is arranged in a stator core 1, and a frame 11 and a through bolt (not shown) are arranged in the stator core 1 so that the rotor core 2 has substantially the same configuration as that of an actual rotating machine. In this configuration, electric power is supplied to the winding 3 to measure the no-load characteristic.
【００２９】この測定方法の趣旨は次にある。すなわ
ち、磁化特性の悪い材料にて固定子鉄心１を形成した場
合には、動作磁束密度が高くなると、磁束は固定子鉄心
１から漏れ易くなる。その際、図６のように、固定子鉄
心１の外周に鋳物等の磁性を有する材料からなるフレー
ム１１が接していると、磁束の一部Φ１がフレーム１１
に漏れ、固定子鉄心１に流れる磁束Φｍの一部を分担す
る。従って、実機回転機とした場合の無負荷特性は、そ
れら構成物の特性を含んだ値となる。The purpose of this measuring method is as follows. That is, when the stator core 1 is made of a material having poor magnetization characteristics, the magnetic flux easily leaks from the stator core 1 as the operating magnetic flux density increases. At that time, as shown in FIG. 6, when a frame 11 made of a magnetic material such as a casting is in contact with the outer periphery of the stator core 1, a part of the magnetic flux Φ1 is generated.
Part of the magnetic flux Φm that flows to the stator core 1 and leaks to the stator core 1. Therefore, the no-load characteristic in the case of an actual rotating machine is a value including the characteristics of those constituents.
【００３０】一般に、フレーム等の効果としては、フレ
ーム等が無い場合に対し、磁束を分担するため、無負荷
電流は減少し、無負荷損失は増大する。しかるに、本実
施例においては、実機回転機の構成を模擬した測定とな
ることから、それら構成物を含んだ特性値を得ることが
できる。この結果、より実際の回転機の運転状態におけ
る磁束の流れに近い条件にて測定がなされ、もって、こ
の測定結果は、回転機の無負荷特性に精度良く一致する
ものとなる。In general, as the effect of the frame or the like, since the magnetic flux is shared as compared with the case where there is no frame or the like, the no-load current decreases and the no-load loss increases. However, in the present embodiment, since the measurement simulates the configuration of the actual rotating machine, it is possible to obtain the characteristic value including those components. As a result, the measurement is performed under the condition closer to the flow of the magnetic flux in the actual operating state of the rotating machine, and thus the measurement result accurately matches the no-load characteristic of the rotating machine.
【００３１】前掲の表２および表３には、上記各実施例
での測定結果を示している。これら表中の、モータ特性
は第１の実施例（固定子鉄心と回転子鉄心との組み合わ
せ）における測定結果を示しており、この場合２台のモ
ータの値を示している。また、鉄損の鉄心単体の欄にお
いては、第２の実施例および第３の実施例での測定結果
を示し、同フレーム組合せの欄においては第４の実施例
での測定結果を示している。Tables 2 and 3 above show the measurement results in each of the above examples. The motor characteristics in these tables show the measurement results in the first embodiment (combination of the stator core and the rotor core), and in this case the values of two motors. Further, the column of iron loss alone shows the measurement results of the second and third examples, and the column of the same frame combination shows the measurement results of the fourth example. .
【００３２】回転子鉄心（イ）〜（ホ）のうち、鉄心単
体と、フレーム組合せとの比較から分かるように、磁化
特性の良好な回転子鉄心（ロ）と（ハ）とを用いた測定
では、鉄心単体で、モータの無負荷特性と対応が良い
が、磁化特性の悪い回転子鉄心（イ）と（ホ）とを用い
た測定では、フレーム組合せの形態でないと、モータの
無負荷特性と対応が悪いことが分かる。このことから、
測定に際しては材料の素材特性により適正な方法を選ぶ
ことが好ましい。Among the rotor cores (a) to (e), as can be seen from the comparison between the single core and the frame combination, the rotor cores (b) and (c) having good magnetization characteristics were used for the measurement. Then, the iron core alone has good correspondence with the no-load characteristic of the motor, but in the measurement using the rotor iron cores (a) and (e) with bad magnetization characteristics, the no-load characteristic of the motor must be obtained unless the frame combination is used. It turns out that the correspondence is bad. From this,
Upon measurement, it is preferable to select an appropriate method depending on the material characteristics of the material.
【００３３】[0033]
【発明の効果】本発明は以上の説明から明らかなよう
に、次の効果を得ることができる。請求項１の回転機の
特性測定装置によれば、巻線に通電すると、固定子鉄心
の歯部を流れる磁束は、回転機運転時と同様に正弦波状
に分布するようになるから、通電電流がこの磁束の流れ
を反映した値を示し、また損失もこの磁束により発生す
る値を示すようになり、この結果、回転機の運転時の無
負荷特性と対応した特性値を、精度良くしかも簡単に測
定できる。As is apparent from the above description, the present invention can obtain the following effects. According to the characteristic measuring device for a rotating machine of claim 1, when the winding is energized, the magnetic flux flowing through the teeth of the stator core is distributed in a sinusoidal manner as in the rotating machine operation. Shows the value reflecting the flow of this magnetic flux, and the loss also shows the value generated by this magnetic flux.As a result, the characteristic value corresponding to the no-load characteristic of the rotating machine during operation can be accurately and easily Can be measured.
【００３４】請求項２の回転機の特性測定方法によれ
ば、第１の手段と同様に、回転機の運転時の無負荷特性
と対応した特性値を精度良くしかも簡単に測定できる。According to the characteristic measuring method of the rotating machine of the second aspect, similarly to the first means, the characteristic value corresponding to the no-load characteristic during the operation of the rotating machine can be measured accurately and easily.
【００３５】請求項３の回転機の特性測定方法によれ
ば、固定子鉄心内に、既知の異なる素材特性をもつ鉄心
材料からなる複数個の回転子鉄心を順次択一的に配置
し、各回転子鉄心配置ごとに前記巻線に電力を供給して
無負荷特性をそれぞれ測定するから、固定子鉄心あるい
は回転子鉄心の損失特性をほぼ精度良くしかも簡単に知
ることができる。According to the characteristic measuring method for a rotating machine of claim 3, a plurality of rotor cores made of core material having known different material characteristics are sequentially and selectively arranged in the stator core. Since the no-load characteristics are measured by supplying electric power to the windings for each rotor core arrangement, the loss characteristics of the stator core or the rotor core can be known almost accurately and easily.
【００３６】請求項４の回転機の特性測定方法によれ
ば、発生損失が既知となった回転子鉄心の一つを、固定
子鉄心内に配置し、巻線に電力を供給して無負荷特性を
測定し、その測定結果から被測定物たる固定子鉄心の損
失特性を測定するから、固定子鉄心の無負荷時の損失特
性を精度良くしかも簡単に知ることができる。According to the method for measuring characteristics of a rotating machine of claim 4, one of the rotor cores of which the generated loss is known is arranged in the stator core, and electric power is supplied to the windings for no load. Since the characteristics are measured and the loss characteristics of the stator core, which is the object to be measured, are measured from the measurement results, the loss characteristics of the stator core under no load can be accurately and easily known.
【００３７】請求項５の回転機の特性測定方法によれ
ば、固定子鉄心内に回転子鉄心を配置し、且つ、前記固
定子鉄心にフレーム等を配設して実機回転機とほぼ同じ
構成状態とし、この構成状態で、巻線に電力を供給して
無負荷特性を測定するようにしたから、実機回転機とほ
ぼ一致する特性結果が得られる。According to the characteristic measuring method of the rotating machine of claim 5, the rotor core is arranged in the stator core, and a frame or the like is arranged in the stator core, which is substantially the same as the actual rotating machine. In this state, the electric power is supplied to the winding to measure the no-load characteristic in this configuration state. Therefore, the characteristic result that is almost the same as the actual rotating machine can be obtained.
【図１】本発明の第１の実施例を示す要部の正面図FIG. 1 is a front view of a main part showing a first embodiment of the present invention.
【図２】磁束発生状態を示す要部の正面図FIG. 2 is a front view of a main part showing a magnetic flux generation state.
【図３】測定回路を示す図FIG. 3 is a diagram showing a measurement circuit.
【図４】本発明の第２の実施例に関連するところの、鉄
損測定値を示す図FIG. 4 is a diagram showing measured values of iron loss, which are related to the second embodiment of the present invention.
【図５】本発明の第３の実施例を示す要部の正面図FIG. 5 is a front view of a main part showing a third embodiment of the present invention.
【図６】本発明の第４の実施例を示す要部の正面図FIG. 6 is a front view of a main part showing a fourth embodiment of the present invention.
１は固定子鉄心、２は回転子鉄心、３は巻線、４は測定
回路（測定手段）、１１はフレームを示す。Reference numeral 1 is a stator core, 2 is a rotor core, 3 is a winding wire, 4 is a measuring circuit (measuring means), and 11 is a frame.
Claims (5)
トにトロイダル状に１極ごとに巻回され、各スロットの
巻回数が、固定子鉄心の歯部の磁束分布が正弦波状にな
るように設定された巻線と、 前記巻線に電力を供給して無負荷特性を測定する測定手
段とを備えてなる回転機の特性測定装置。1. A stator core and a slot of this stator core are toroidally wound for each pole so that the number of turns of each slot is such that the magnetic flux distribution of the teeth of the stator core is sinusoidal. A characteristic measuring device for a rotating machine, comprising: the winding set to 1; and a measuring unit that supplies electric power to the winding to measure a no-load characteristic.
に巻線をトロイダル状に巻回すると共に、その巻回数を
固定子鉄心の歯部の磁束分布が正弦波状になるように設
定し、この固定子鉄心内に回転子鉄心を配置し、前記巻
線に電力を供給して無負荷特性を測定するようにしたこ
とを特徴とする回転機の特性測定方法。2. A toroidal winding for each pole is wound around the slots of the stator core, and the number of turns is set so that the magnetic flux distribution in the teeth of the stator core is sinusoidal. A method for measuring characteristics of a rotating machine, wherein a rotor core is arranged in the stator core, and electric power is supplied to the winding to measure a no-load characteristic.
し、１極ごとに巻線をトロイダル状に巻回すると共に、
その巻回数を固定子鉄心の歯部の磁束分布が正弦波状に
なるように設定し、この固定子鉄心内に、既知の異なる
素材特性をもつ鉄心材料からなる複数個の回転子鉄心を
順次択一的に配置し、各回転子鉄心配置ごとに前記巻線
に電力を供給して無負荷特性をそれぞれ測定し、その測
定結果から前記被測定物たる固定子鉄心あるいは回転子
鉄心の損失特性を測定するようにしたことを特徴とする
回転機の特性測定方法。3. A toroidal winding is provided for each pole in a slot of a stator core which is an object to be measured, and
The number of turns is set so that the magnetic flux distribution in the teeth of the stator core is sinusoidal, and a plurality of rotor cores made of core material with different known material characteristics are sequentially selected in this stator core. It arranges in one and measures the no-load characteristics by supplying electric power to the winding for each rotor core arrangement, and from the measurement results, the loss characteristics of the stator core or the rotor core which is the DUT is measured. A method for measuring characteristics of a rotating machine, which is characterized by being measured.
て発生損失が既知となった回転子鉄心の一つを用い、 被測定物たる固定子鉄心のスロットに対し、１極ごとに
巻線をトロイダル状に巻回すると共に、その巻回数を固
定子鉄心の歯部の磁束分布が正弦波状になるように設定
し、この固定子鉄心内に、前記回転子鉄心を配置し、前
記巻線に電力を供給して無負荷特性を測定し、その測定
結果から前記被測定物たる固定子鉄心の損失特性を測定
するようにしたことを特徴とする回転機の特性測定方
法。4. Use of one of the rotor cores, the loss of which is already known in the method for measuring the characteristics of a rotating machine according to claim 3, and winding is performed for each pole for each slot of the stator core as an object to be measured. While winding in a toroidal shape, the number of turns is set so that the magnetic flux distribution of the tooth portion of the stator core is sinusoidal, and the rotor core is arranged in this stator core, and the winding is A method for measuring characteristics of a rotating machine, characterized in that power is supplied to the to measure the no-load characteristics, and the loss characteristics of the stator core, which is the object to be measured, is measured from the measurement results.
に巻線をトロイダル状に巻回すると共に、その巻回数を
固定子鉄心の歯部の磁束分布が正弦波状になるように設
定し、この固定子鉄心内に回転子鉄心を配置し、且つ、
前記固定子鉄心にフレーム等を配設して実機回転機とほ
ぼ同じ構成状態とし、前記巻線に電力を供給して無負荷
特性を測定するようにしたことを特徴とする回転機の特
性測定方法。5. A toroidal winding for each pole is wound around the slots of the stator core, and the number of turns is set so that the magnetic flux distribution in the teeth of the stator core is sinusoidal. , Arranging the rotor core in this stator core, and
A characteristic measurement of a rotating machine, characterized in that a frame or the like is arranged on the stator core to make the configuration almost the same as an actual rotating machine, and electric power is supplied to the winding to measure a no-load characteristic. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7045411A JPH08251873A (en) | 1995-03-06 | 1995-03-06 | Method and device for measuring property of rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7045411A JPH08251873A (en) | 1995-03-06 | 1995-03-06 | Method and device for measuring property of rotating electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08251873A true JPH08251873A (en) | 1996-09-27 |
Family
ID=12718525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7045411A Pending JPH08251873A (en) | 1995-03-06 | 1995-03-06 | Method and device for measuring property of rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08251873A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130068A1 (en) * | 2009-05-13 | 2010-11-18 | 精进电动科技（北京）有限公司 | Apparatus and method for testing number of turns on coil |
-
1995
- 1995-03-06 JP JP7045411A patent/JPH08251873A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130068A1 (en) * | 2009-05-13 | 2010-11-18 | 精进电动科技（北京）有限公司 | Apparatus and method for testing number of turns on coil |
| US8653850B2 (en) | 2009-05-13 | 2014-02-18 | Jing-Jin Electric Technologies (Beijing) Co., Ltd. | Apparatus and method for testing number of turns on coil |
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