JP3861894B2 - Electric motor - Google Patents
Electric motor Download PDFInfo
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- JP3861894B2 JP3861894B2 JP2004257937A JP2004257937A JP3861894B2 JP 3861894 B2 JP3861894 B2 JP 3861894B2 JP 2004257937 A JP2004257937 A JP 2004257937A JP 2004257937 A JP2004257937 A JP 2004257937A JP 3861894 B2 JP3861894 B2 JP 3861894B2
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- magnetic
- motor
- winding
- sensor
- velocity sensor
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Description
本発明は、誘導電動機などの電動機において磁気速度センサの設置方法に関する。 The present invention relates to a method for installing a magnetic velocity sensor in an electric motor such as an induction motor.
近年、誘導電動機などの電動機において、速度制御の要求が強まり回転子に設けた磁石を回転子とともに回転させ、この磁束変化を固定子に設置した磁気速度センサで検出して速度制御を行うものが多くなりつつある。 In recent years, in an electric motor such as an induction motor, there has been a demand for speed control, in which a magnet provided on a rotor is rotated together with the rotor, and this magnetic flux change is detected by a magnetic speed sensor installed on the stator. It is increasing.
一方、製品の薄型,軽量指向に対し電動機への薄型要求が強まり、磁気速度センサを電動機内部に取り込む必要がある。 On the other hand, there is an increasing demand for thin motors for thin and lightweight products, and it is necessary to incorporate a magnetic velocity sensor into the motor.
このような従来の磁気速度センサの設置方法を図4にもとづいて説明する。 A method for installing such a conventional magnetic velocity sensor will be described with reference to FIG.
図4は2極に誘導電動機の事例であるが、磁気速度センサ1は主巻線2と補巻線18の中間の部分に設置され、プリント基板3上で電動機口出線4と接続されていた。
FIG. 4 shows an example of an induction motor with two poles, but the
しかしながら上記従来の構成では、電動機起動時に回転子に設けたセンサ磁石の着磁(N,S極)の境界と磁気速度センサの位置が一致する場合で、印加電圧が低くある一定時間内にモータが起動しない場合、かつ電動機印加電圧が高く巻線の磁束量がセンサ磁石の磁束量より高い場合に磁気速度センサが異常パルスを出力し、電動機が停止状態にもかかわらず電動機が回っていると製品の制御が判断し、印加電圧を低下させ電動機が起動しないことがある。そのために、起動時は磁気速度センサの信号を利用しないような製品の制御システムにする方法や、巻線の磁束量よりセンサ磁石の磁束量を高くする方法にて対応しているが、モータの使用範囲に制約を受け機種展開の妨げとなるという問題点を有していた。 However, in the above-described conventional configuration, when the position of the magnetic velocity sensor coincides with the boundary of the magnet (N, S pole) of the sensor magnet provided on the rotor when the motor is started, the motor is applied within a certain time when the applied voltage is low If the motor does not start, and if the applied voltage of the motor is high and the amount of magnetic flux in the winding is higher than the amount of magnetic flux in the sensor magnet, the magnetic speed sensor outputs an abnormal pulse, and the motor is rotating even though the motor is stopped. The product control may determine that the applied voltage is reduced and the motor may not start. For this purpose, it is possible to use a product control system that does not use the magnetic velocity sensor signal at startup, or a method in which the magnetic flux of the sensor magnet is made higher than the magnetic flux of the winding. There was a problem that the range of use was restricted and the model development was hindered.
本発明は上記従来の問題点を解決するために、磁気速度センサの位置を固定子の磁束の分布が少ない位置に設置したものである。具体的には、トロイダル巻線による主巻線と補巻線とを隔設してほどこした固定子と磁気速度センサとセンサ磁石とを有し、前記磁気速度センサを前記主巻線のみに配置し、かつ、前記主巻線の極中央に設置することを特徴とする電動機である。 In the present invention, in order to solve the above-described conventional problems, the position of the magnetic velocity sensor is installed at a position where the distribution of the magnetic flux of the stator is small. Specifically, it has a stator, a magnetic speed sensor, and a sensor magnet that are separated by separating a main winding and an auxiliary winding by a toroidal winding, and the magnetic speed sensor is arranged only in the main winding. And it is an electric motor characterized by being installed in the pole center of the main winding.
この構成によって、電動機起動時において磁気速度センサが異常パルスを出力せず、電動機が起動しないということがなく小型で使用範囲が広い高性能の電動機が提供できる。 With this configuration, it is possible to provide a high-performance motor that is small and has a wide range of use without causing the magnetic velocity sensor to output an abnormal pulse when the motor is started, so that the motor does not start.
以上の説明から明らかなように本発明は、磁気速度センサの位置を巻線の磁束の分布が少ない極中央に設置したことにより、小型で使用範囲が広く速度精度のよい電動機が得られる。 As is apparent from the above description, the present invention provides a motor with a small size, a wide range of use, and high speed accuracy by installing the position of the magnetic velocity sensor at the center of the pole where the magnetic flux distribution of the winding is small.
以下本発明の実施例について、図面を参照しながら説明する。 Embodiments of the present invention will be described below with reference to the drawings.
図1は本発明の実施例における磁気速度センサ1の設置位置を示す巻線完成品の斜視図である。磁気速度センサ1はトロイダル巻線の主巻線2の磁束の分布が少ない極中央に設置され、プリント基板3上で電動機口出線4と接続されている。
FIG. 1 is a perspective view of a finished winding product showing the installation position of the
図2は本発明を使用した位相制御誘導電動機の半断面図である。5は固定子完成品であり、固定子鉄心6,トロイダル巻線7,樹脂8,磁気速度センサ1により構成されている。9は回転子完成品で速度検出用磁石10,回転子11,回転軸12から構成されている。そして回転子完成品9は軸受装置13を介して固定子完成品5へ回転自在に固定されている。
FIG. 2 is a half sectional view of a phase control induction motor using the present invention. Reference numeral 5 denotes a finished stator product, which includes a stator core 6, a toroidal winding 7, a resin 8, and a
なお、磁気速度センサ1は速度検出用磁石10と対向する位置に配設されている。
The
以上の構成により、回転子完成品9が回転すれば速度検出用磁石10も同心速度で回転し、固定子完成品5に配設された磁気速度センサ1で速度信号を得る。
With the above configuration, when the rotor finished product 9 rotates, the speed detection magnet 10 also rotates at a concentric speed, and a speed signal is obtained by the
このように図3に示すように、この速度信号14を位相制御回路15へ入力し、この位相制御回路15の出力16で位相誘導電動機17を制御することにより速度精度のよい位相制御誘導電動機17を得ることができる。
Thus, as shown in FIG. 3, the
本発明は、誘導電動機の回転数検出用磁気センサの設置場所に関するものである。 The present invention relates to an installation location of a magnetic sensor for detecting the rotational speed of an induction motor.
1 磁気速度センサ
2 主巻線
3 プリント基板
4 電動機口出線
5 固定子完成品
6 固定子鉄心
7 トロイダル巻線
8 樹脂
9 回転子完成品
10 速度検出用磁石
11 回転子
12 回転軸
13 軸受装置
14 速度信号
15 位相制御回路
16 出力
17 位相制御誘導電動機
18 補巻線
DESCRIPTION OF
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004257937A JP3861894B2 (en) | 2004-09-06 | 2004-09-06 | Electric motor |
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JP2004257937A JP3861894B2 (en) | 2004-09-06 | 2004-09-06 | Electric motor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP14922694A Division JP3803396B2 (en) | 1994-06-30 | 1994-06-30 | Electric motor |
Publications (2)
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JP2004344000A JP2004344000A (en) | 2004-12-02 |
JP3861894B2 true JP3861894B2 (en) | 2006-12-27 |
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JP2004257937A Expired - Lifetime JP3861894B2 (en) | 2004-09-06 | 2004-09-06 | Electric motor |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5332750B2 (en) * | 2009-03-10 | 2013-11-06 | 日産自動車株式会社 | Rotating electric machine |
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