JPH07322591A - Commutatorless motor - Google Patents
Commutatorless motorInfo
- Publication number
- JPH07322591A JPH07322591A JP7031050A JP3105095A JPH07322591A JP H07322591 A JPH07322591 A JP H07322591A JP 7031050 A JP7031050 A JP 7031050A JP 3105095 A JP3105095 A JP 3105095A JP H07322591 A JPH07322591 A JP H07322591A
- Authority
- JP
- Japan
- Prior art keywords
- teeth
- phase
- stator
- energization
- stator windings
- 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.)
- Granted
Links
Landscapes
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気機器などに用いられ
る小型の無整流子電動機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small commutatorless electric motor used for electric equipment and the like.
【０００２】[0002]
【従来の技術】一般に無整流子電動機は第１図（例えば
特公昭５５−１２８３６号公報）に示す様に、固定子
（１）が３本の凸極に構成された歯（２）、（３）、
（４）で構成され、それぞれの歯にはＵ相、Ｖ相、Ｗ相
からなる三相の固定子巻線（５）、（６）、（７）が設
けられている。また、中心には２極に着磁された回転子
（８）が設けられ、さらに歯（２）と歯（３）、歯
（３）と歯（４）、歯（４）と歯（２）の間には回転子
（８）の回転位置を検出する位置検出用の３個のホール
素子（９）、（１０）、（１１）（またはサーチコイル
などの位置検出手段）が設けられている。2. Description of the Related Art Generally, as shown in FIG. 1 (for example, Japanese Examined Patent Publication (Kokoku) No. 55-12836), a commutator-free electric motor has a stator (1) having teeth (2) ( 3),
(4), and each tooth is provided with three-phase stator windings (5), (6), (7) consisting of U-phase, V-phase and W-phase. Further, a rotor (8) magnetized to have two poles is provided at the center, and further, teeth (2) and teeth (3), teeth (3) and teeth (4), teeth (4) and teeth (2). 3), three Hall elements (9), (10), (11) for position detection (or position detection means such as a search coil) for detecting the rotational position of the rotor (8) are provided. There is.
【０００３】尚、第２図は回転子（１２）を４極に着磁
した従来例であり、第１図と同一構成要素は同一符号を
付してある。以上のような従来例では、まず回転子
（８）、又は（１２）の回転位置を検出するために３個
のホール素子（９）、（１０）、（１１）が電動機の内
部に設けられていた。Incidentally, FIG. 2 shows a conventional example in which the rotor (12) is magnetized to have four poles, and the same components as those in FIG. 1 are designated by the same reference numerals. In the conventional example as described above, three Hall elements (9), (10) and (11) are first provided inside the electric motor in order to detect the rotational position of the rotor (8) or (12). Was there.
【０００４】そのためホール素子（９）、（１０）、
（１１）、固定子巻線（５）、（６）、（７）と外部引
出線との接続部が多く配線の接続構造が複雑であった。Therefore, the Hall elements (9), (10),
(11), the stator windings (5), (6), and (7) have many connecting portions with the external lead wires, and the wiring connecting structure is complicated.
【０００５】またホール素子（９）、（１０）、（１
１）の取り付け精が悪い場合には、回転子（８）、又は
（１２）の回転位置に対して検出誤差が生じ固定子巻線
（５）、（６）、（７）の通電切換タイミングが乱れ、
回転子の１回転中に不必要な加減速が生じて電動機の運
転効率や特性が悪くなると共に、加減速による振動や騒
音が発生する問題点があった。Hall elements (9), (10), (1
When the mounting precision of 1) is poor, a detection error occurs with respect to the rotational position of the rotor (8) or (12), and the energization switching timing of the stator windings (5), (6), (7) Is disturbed,
There is a problem that unnecessary acceleration / deceleration occurs during one rotation of the rotor, which deteriorates the operating efficiency and characteristics of the electric motor and causes vibration and noise due to acceleration / deceleration.
【０００６】さらにこのホール素子（９）、（１０）、
（１１）は一般に熱に弱く、この種の電動機（例えば圧
縮機など）を高温雰囲気の中で利用できない問題点があ
り、電動機の汎用性を悪くする問題点があった。また、
上記の問題点を解消するためにホール素子（９）、（１
０）、（１１）などの位置検出手段を設けず、動作時に
非通電となる相が常に１相生じるように三相への通電を
制御し、この非通電の固定子巻線に生じる誘起電圧の変
化を基にしたゲート信号で固定子巻線への通電を順次切
り換えていく制御装置が試みられたが、この制御装置を
第１図、第２図に示された構造（但しホール素子を取り
除く）の無整流子電動機に用いると低速回転時や急激な
過負荷で回転速度が低下すると回転速度の低下に伴って
誘起電圧が低くなり制御装置に動作不良が生じ、脱調や
ロックなどの異常が発生する問題点があった。Further, the Hall elements (9), (10),
(11) is generally weak to heat, and there is a problem that this kind of electric motor (for example, a compressor) cannot be used in a high temperature atmosphere, and there is a problem that the versatility of the electric motor is deteriorated. Also,
In order to solve the above problems, Hall elements (9), (1
0), (11), etc. are not provided, the energization to the three phases is controlled so that one phase is always non-energized during operation, and the induced voltage generated in the non-energized stator windings is controlled. Attempts have been made to control a device in which energization to the stator windings is sequentially switched by a gate signal based on the change of the control signal. This control device has the structure shown in FIG. 1 and FIG. When used in a non-commutator motor of (Removing), when the rotation speed decreases at low speed rotation or due to a sudden overload, the induced voltage decreases with the decrease in rotation speed, which causes malfunction of the control device, causing step out or lock. There was a problem that an abnormality occurred.
【０００７】さらに、このような第１図、第２図に示さ
れた構造の無整流子電動機はこのような通電制御を行っ
た場合、電動機の回転時に固定子巻線（５）、（６）、
（７）のいずれかの２相のみが常に通電されることにな
り、回転子（８）、又は（１２）に生ずる回転磁界は常
に回転子（８）、又は（１２）の外周の１８０度以内の
所に集中する。Furthermore, in such a commutatorless motor having the structure shown in FIGS. 1 and 2, when such energization control is performed, the stator windings (5), (6) are rotated when the motor rotates. ),
Only any two phases of (7) are always energized, and the rotating magnetic field generated in the rotor (8) or (12) is always 180 degrees on the outer circumference of the rotor (8) or (12). Concentrate within.
【０００８】従って、回転子（８）、又は（１２）の外
周に対する磁気吸引力に片寄りが生じ振動、騒音が発生
すると共に、この片寄りによる加重も軸受けの一部に集
中し軸受け部の寿命も短くなる問題点があつた。特に、
ファンモータ用など出力の大きい電動機でこの問題点が
顕著に表れるものであった。Therefore, the magnetic attraction force to the outer circumference of the rotor (8) or (12) is deviated to generate vibration and noise, and the weight due to the deviation is also concentrated on a part of the bearing, so that the bearing portion There was a problem that the life was shortened. In particular,
This problem was remarkable in electric motors with high output such as fan motors.
【０００９】[0009]
【発明が解決しようとする課題】以上の点に鑑みて、本
発明の無整流子電動機は、非通電の固定子巻線に生じる
誘起電圧を用いて固定子巻線への通電切換を制御する際
に、回転子の低速回転時の誘起電圧の増加と、固定子か
ら生じる回転磁界の片寄り防止を目的としている。In view of the above points, the commutatorless motor of the present invention controls the energization switching to the stator winding by using the induced voltage generated in the non-energized stator winding. At that time, the purpose is to increase the induced voltage when the rotor rotates at a low speed and prevent the rotating magnetic field generated from the stator from being biased.
【００１０】[0010]
【課題を解決するための手段】本発明は永久磁石を有す
る回転子と、この回転子に回転磁界を与える複数の歯
と、夫々の歯に巻かれた三相の固定子巻線とを有する無
整流子電動機において、固定子巻線の通電組合せを非通
電となる相が常に１相生じるように組合せ、回転子の回
転時の非通電の固定子巻線に生じる誘起電圧に基づいて
固定子巻線の通電組合せを切り換えるように構成し、前
記歯の数を３×ｎ（ｎは２以上の整数）に構成すると共
に、前記固定子巻線を隣同士の歯の異相で、かつ全波通
電が可能に三相結線するものである。The present invention comprises a rotor having permanent magnets, a plurality of teeth for imparting a rotating magnetic field to the rotor, and a three-phase stator winding wound around each tooth. In a non-commutator motor, a combination of energizing stator windings is combined so that one phase is always non-energized, and the stator is based on the induced voltage generated in the non-energizing stator winding during rotation of the rotor. The number of teeth is set to 3 × n (n is an integer of 2 or more) by switching the energization combination of the windings, and the stator windings are out of phase with adjacent teeth and are full-wave. It is a three-phase wiring that can be energized.
【００１１】また、複数の歯は凸極に構成され、かつ歯
数を６本又は９本に構成したものである。The plurality of teeth are convex poles and the number of teeth is 6 or 9.
【００１２】[0012]
【作用】歯と固定子巻線の配置とにより、回転子が低速
回転の時にも誘起電圧に基づいた固定子巻線の通電切換
えを確実にすることができる。同時に固定子巻線による
回転磁界が分散し回転子の回転が安定するものである。With the arrangement of the teeth and the stator winding, it is possible to reliably switch the energization of the stator winding based on the induced voltage even when the rotor rotates at a low speed. At the same time, the rotating magnetic field generated by the stator windings is dispersed to stabilize the rotation of the rotor.
【００１３】[0013]
【実施例】以上本発明の一実施例を第３図乃至第６図に
基づいて説明すると、第３図において（１３）は６本の
凸極の歯（１４）乃至歯（１９）を有する固定子であ
り、夫々の歯（１４）乃至歯（１９）は６０度間隔でか
つこの歯には固定子巻線（２０）乃至（２５）が設けら
れている。（２６）は４極に着磁され、かつその中心に
回転軸が設けられた回転子である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 3 to 6. In FIG. 3, (13) has six salient pole teeth (14) to (19). A stator, each tooth (14) to tooth (19) being spaced by 60 degrees and having stator windings (20) to (25) provided on the tooth. Reference numeral (26) is a rotor which is magnetized to have four poles and has a rotation shaft provided at the center thereof.
【００１４】第４図は回転子（２７）を８極に着磁した
他実施例であり、第３図と同一構成要素は同一符号を付
してある。FIG. 4 shows another embodiment in which the rotor (27) is magnetized to have eight poles, and the same components as those in FIG. 3 are designated by the same reference numerals.
【００１５】また、固定子巻線（２０）乃至（２５）は
第５図に示す様にスター結線されてＵ相、Ｖ相、Ｗ相を
構成している。これら夫々の相への電流を第６図に示す
ように正負交互に流し、いわゆる全波通電方式を成して
いる。The stator windings (20) to (25) are star-connected as shown in FIG. 5 to form U-phase, V-phase and W-phase. As shown in FIG. 6, the currents to the respective phases are alternately flown to form a so-called full-wave energization system.
【００１６】さらに固定子巻線（２０）乃至（２５）は
通電中隣同士の歯が異極（異相）で、合い向かい合った
歯同士が同極（同相）となるように結線されている。Further, the stator windings (20) to (25) are connected so that the adjacent teeth have different polarities (different phases) while energized and the facing teeth have the same polarities (same phase).
【００１７】尚、（２８）は非通電の固定子巻線に生じ
る誘起電圧の変化を基にしてゲート信号を発生し、スイ
ッチング素子（２９）乃至（３４）のＯＮ−ＯＦＦを行
う制御機であり、これらスイッチング素子を制御して第
６図（Ｕ）、（Ｖ），（Ｗ）に示す様なパターンＵ相、
Ｖ相、Ｗ相への通電制御を行う。Reference numeral (28) is a controller for generating a gate signal on the basis of a change in induced voltage generated in the non-energized stator winding to turn ON / OFF the switching elements (29) to (34). Yes, by controlling these switching elements, the pattern U phase as shown in FIGS. 6 (U), (V), and (W),
Energization control for the V phase and W phase is performed.
【００１８】以上のように構成した無整流子電動機で
は、第６図（Ｕ）、（Ｖ），（Ｗ）に示す様なパター
ン、すなわち常に３相のうちの２相にのみ通電するパタ
ーン、で固定子巻線の通電を制御しても歯の数を３×ｎ
（ｎは２以上の整数）に構成し、各歯（１４）乃至（１
９）の相は隣同士の歯が異相になるように構成している
ので、回転磁界（磁気吸引力）の分布が片寄らず回転子
の外周上に分散させることができる。In the commutatorless motor constructed as described above, the patterns shown in FIGS. 6 (U), (V), and (W), that is, the patterns in which only two of the three phases are energized at all times, Even if the energization of the stator winding is controlled by, the number of teeth is 3 × n
(N is an integer of 2 or more), and each tooth (14) to (1)
Since the phase of 9) is configured such that adjacent teeth have different phases, it is possible to disperse the rotating magnetic field (magnetic attraction force) on the outer circumference of the rotor without uneven distribution.
【００１９】また、歯の数を３×ｎ（ｎは２以上の整
数）に構成し、３歯の従来技術に比べ１本当たりの歯の
断面積を従来に比べて小さくすることによって、それぞ
れの歯における固定子巻線の巻数を増加させることがで
き、誘起電圧を大きく取り出すことができる。Further, the number of teeth is set to 3 × n (n is an integer of 2 or more), and the cross-sectional area of each tooth is made smaller than that of the prior art of three teeth, so that The number of windings of the stator winding in the tooth can be increased, and the induced voltage can be greatly extracted.
【００２０】従って、回転子の低回転時にも大きな誘起
電圧を得ることができ、制御装置に動作不良が生じ、脱
調やロックなどの異常が発生することを防止することが
できる。Therefore, a large induced voltage can be obtained even when the rotor is rotating at a low speed, and it is possible to prevent malfunction of the control device and occurrence of abnormalities such as step-out and lock.
【００２１】さらに固定子巻線の歯数を６本もしくは９
本にすれば歯数が１２本以上の電動機に比べて固定子巻
線間及び引出線との配線を減少でき製造工程の簡略化、
及び歯数を６本もしくは９本にすることで歯数を１２本
以上とした場合より安価で効率の良い電動機が得られ、
かつ固定子の積厚を少なくして薄型化が行えるものであ
る。Further, the number of teeth of the stator winding is 6 or 9
The number of teeth reduces the wiring between the stator windings and the lead wires compared to a motor having 12 or more teeth, and simplifies the manufacturing process.
And, by setting the number of teeth to 6 or 9, it is possible to obtain an electric motor which is cheaper and more efficient than the case where the number of teeth is 12 or more.
In addition, the thickness of the stator can be reduced to make it thinner.
【００２２】尚、歯が凸極であるため固定子巻線を巻く
際の自動化が容易の行え一層の製造工程の簡略化が図れ
るものである。Since the teeth have convex poles, the winding of the stator winding can be easily automated and the manufacturing process can be further simplified.
【００２３】さらに固定子巻線をスター結線（三相全波
結線）することによって、固定子巻線を半波通電する場
合より固定子巻線の利用率が高くなり、電動機の運転効
率を高くすることができる。Further, by connecting the stator windings in a star connection (three-phase full-wave connection), the utilization ratio of the stator windings is higher than in the case where the stator windings are energized by half-wave, and the operation efficiency of the motor is increased. can do.
【００２４】特に、ファンモータ用など出力の大きい電
動機では運転効率の向上が有効に表れるものである。In particular, in a motor having a large output such as for a fan motor, the improvement of operating efficiency can be effectively exhibited.
【００２５】以下、誘起電圧を用いた際の固定子巻線の
通電制御の一例（制御器（２８）の動作の一例）を第５
図、第６図に基づいて説明する。A fifth example of the energization control of the stator winding when the induced voltage is used (an example of the operation of the controller (28)) will be described below.
This will be described with reference to FIGS.
【００２６】制御器（２８）は非通電の固定子巻線、例
えばスイッチング素子（２９）、（３３）をＯＮし、ス
イッチング素子（３０）、（３１）、（３２）、（３
４）をＯＦＦさせてＵ相からＶ相へ電流を通電する（固
定子巻線（２０）、（２３）、（２２）、（２５）が通
電されている）ときには固定子巻線（２１）、（２４）
の端子（Ｗ）と中性点（Ｎ）との間に生じる誘起電圧は
第６図（ｗ）に示す様に変化する（非通電時の誘起電圧
の変化のみを示す）。The controller (28) turns on the non-energized stator windings, for example, the switching elements (29) and (33), and the switching elements (30), (31), (32) and (3).
4) is turned off to pass a current from the U phase to the V phase (when the stator windings (20), (23), (22) and (25) are energized), the stator winding (21) , (24)
The induced voltage generated between the terminal (W) and the neutral point (N) changes as shown in FIG. 6 (w) (only the change of the induced voltage when not energized is shown).
【００２７】この誘起電圧の変化において、特に固定子
巻線（２１）、（２４）への通電が切れた（スイッチン
グ素子（３４）がＯＮからＯＦＦに変わった）ときから
零電圧となる時間（ｔ）を計時し、この誘起電圧が零と
なった時からこの（ｔ）時間後にスイッチング素子（３
１）、（３３）をＯＮし、スイッチング素子（２９）、
（３０）、（３２）、（３４）をＯＦＦさせてＷ相から
Ｖ相に電流を通電する。In the change of the induced voltage, the time when the voltage becomes zero voltage from when the energization of the stator windings (21) and (24) is cut off (when the switching element (34) is changed from ON to OFF). t), the switching element (3) is measured after (t) time from when the induced voltage becomes zero.
1) and (33) are turned on, and the switching element (29),
(30), (32), and (34) are turned off, and a current is passed from the W phase to the V phase.
【００２８】同時に固定子巻線（２０）、（２３）の端
子（Ｕ）と中性点（Ｎ）との間に誘起電圧を用いて上記
同様にスイッチング素子（２９）乃至（３４）を次の状
態に切り換える。Simultaneously, switching elements (29) to (34) are connected in the same manner as above by using an induced voltage between the terminals (U) of the stator windings (20) and (23) and the neutral point (N). Switch to the state of.
【００２９】以下、同様に非通電の固定子巻線に生じる
誘起電圧（第６図（ｕ）、（ｖ），（ｗ））に基づいて
順次第６図（Ｕ）、（Ｖ）、（Ｗ）の様に通電を切換え
回転子（２６）、又は（２７）を回転させるものであ
る。Similarly, based on the induced voltages (FIGS. 6 (u), (v), (w)) similarly generated in the non-energized stator winding, FIGS. 6 (U), (V), ( As shown in W), the energization is switched to rotate the rotor (26) or (27).
【００３０】[0030]
【発明の効果】以上のように本発明は永久磁石を有する
回転子と、この回転子に回転磁界を与える複数の歯と、
夫々の歯に巻かれた三相の固定子巻線とを有する無整流
子電動機において、固定子巻線の通電組合せを非通電と
なる相が常に１相生じるように組合せ、回転子の回転時
に非通電の固定子巻線に生じる誘起電圧に基づいて固定
子巻線の通電組合せを切り換えるように構成し、前記歯
の数を３×ｎ（ｎは２以上の整数）に構成すると共に、
前記固定子巻線を隣同士の歯が異相で、かつ全波通電が
可能に三相結線することによって、Ｕ相、Ｖ相、Ｗ相の
三相固定子巻線を複数の歯に分割させ回転子への磁気吸
引力の片寄りを防止でき騒音の減少や、軸受けの長寿命
化が図れる。As described above, according to the present invention, a rotor having a permanent magnet, a plurality of teeth for applying a rotating magnetic field to the rotor,
In a non-commutator motor having a three-phase stator winding wound around each tooth, a combination of energization of the stator windings is combined so that one phase is always non-energized, and when the rotor rotates. The energization combination of the stator windings is switched based on the induced voltage generated in the non-energized stator windings, and the number of teeth is set to 3 × n (n is an integer of 2 or more), and
The stator winding is divided into a plurality of teeth by connecting the U-phase, V-phase, and W-phase three-phase stator windings by connecting the stator windings in three-phase so that adjacent teeth have different phases and full-wave energization is possible. The magnetic attraction force to the rotor can be prevented from deviating to reduce noise and prolong the life of the bearing.
【００３１】また、非通電の固定子巻線に生じる誘起電
圧をＵ相、Ｖ相、Ｗ相の通電切換に用いるため回転子の
回転位置を検出するための検出手段（ホール素子など）
が不要になり、電動機を小型化でき製造工程を簡略化で
きると共にこの電動機を使用する場所による、例えば温
度などの規制条件を緩和できこの無整流子電動機の汎用
性を向上させることができる。Further, the induced voltage generated in the non-energized stator winding is used for switching the energization of the U-phase, V-phase and W-phase, so that the detecting means (Hall element etc.) for detecting the rotational position of the rotor.
Is unnecessary, the electric motor can be downsized, the manufacturing process can be simplified, and regulatory conditions such as temperature depending on the place where the electric motor is used can be relaxed and the versatility of the non-commutator electric motor can be improved.
【００３２】また、固定子の歯数の増加で１本当たりの
歯幅が小さくなり、その分固定子巻線の巻き数が増やせ
るので従来に比べて大きな誘起電圧を取り出すことがで
きる。Further, as the number of teeth of the stator increases, the tooth width per one becomes smaller, and the number of windings of the stator winding can be increased accordingly, so that a larger induced voltage can be taken out as compared with the conventional case.
【００３３】従って、低速回転時や急激な負荷増加で回
転数が低下したときでも安定したゲート信号を得ること
ができ、固定子巻線への通電を確実に制御することがで
きるものである。Therefore, it is possible to obtain a stable gate signal even when the rotational speed is reduced at low speed or due to a sudden increase in load, and it is possible to reliably control the energization of the stator winding.
【００３４】尚、夫々の固定子巻線をＵ，Ｖ，Ｗの各相
でスター結線すれば電動機の固定子巻線に直接中性点を
設けることができるので、正確な誘起電圧の変化を検出
することができ固定子巻線への通電を正確に制御するこ
とができる。If each stator winding is star-connected in each phase of U, V and W, a neutral point can be directly provided in the stator winding of the motor, so that an accurate induced voltage change can be achieved. It can be detected and the current to the stator winding can be accurately controlled.
【００３５】[0035]
【図１】 従来の無整流子電動機を示す固定子の概略図FIG. 1 is a schematic view of a stator showing a conventional commutatorless motor.
【図２】 従来の無整流子電動機を示す固定子の概略図FIG. 2 is a schematic view of a stator showing a conventional commutatorless motor.
【図３】 本発明の実施例を示す固定子の概略図FIG. 3 is a schematic view of a stator showing an embodiment of the present invention.
【図４】 本発明の実施例を示す固定子の概略図FIG. 4 is a schematic view of a stator showing an embodiment of the present invention.
【図５】 本発明の電動機に使われる制御装置を示す概
略図FIG. 5 is a schematic diagram showing a control device used in the electric motor of the present invention.
【図６】 （Ｕ）、（Ｖ），（Ｗ）はＵ，Ｖ，Ｗの各相
への通電状態を示す波形図、同図（ｕ），（ｖ），
（ｗ）は、Ｕ，Ｖ，Ｗの各相の非通電時に生じる誘起電
圧を示す波形図である。6 (U), (V), and (W) are waveform diagrams showing the energization state of each phase of U, V, and W, (u), (v), and FIG.
(W) is a waveform diagram showing an induced voltage generated when the U, V, and W phases are not energized.
１３ 固定子 １４乃至１９ 歯 ２０乃至２５ 固定子巻線 13 stator 14 to 19 teeth 20 to 25 stator winding
Claims (2)
に回転磁界を与える複数の歯と、夫々の歯に巻かれた三
相の固定子巻線とを有する無整流子電動機において、固
定子巻線の通電組合せを非通電となる相が常に１相生じ
るように組合せ、回転子の回転時に非通電の固定子巻線
に生じる誘起電圧に基づいて固定子巻線の通電組合せを
切り換えるように構成し、前記歯の数を３×ｎ（ｎは２
以上の整数）に構成すると共に、前記固定子巻線を隣同
士の歯が異相で、かつ全波通電が可能に三相結線するこ
とを特徴とする無整流子電動機。1. A non-commutator motor having a rotor having a permanent magnet, a plurality of teeth for applying a rotating magnetic field to the rotor, and a three-phase stator winding wound around each of the teeth. The energization combination of the child windings is combined so that one phase is always non-energized, and the energization combination of the stator windings is switched based on the induced voltage generated in the non-energized stator winding during rotation of the rotor. And the number of teeth is 3 × n (n is 2
The above-mentioned integer), and the stator windings are three-phase connected so that adjacent teeth have different phases and full-wave energization is possible.
数を６本又は９本に構成したことを特徴とする特許請求
の範囲第１項記載の無整流子電動機。2. The non-commutator electric motor according to claim 1, wherein the plurality of teeth are convex poles and the number of teeth is 6 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7031050A JP2675534B2 (en) | 1995-02-20 | 1995-02-20 | Commutatorless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7031050A JP2675534B2 (en) | 1995-02-20 | 1995-02-20 | Commutatorless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07322591A true JPH07322591A (en) | 1995-12-08 |
| JP2675534B2 JP2675534B2 (en) | 1997-11-12 |
Family
ID=12320666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7031050A Expired - Lifetime JP2675534B2 (en) | 1995-02-20 | 1995-02-20 | Commutatorless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2675534B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000253639A (en) * | 1999-02-25 | 2000-09-14 | Matsushita Electric Ind Co Ltd | Vibrating type motor and driving controller thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3634873A (en) * | 1969-06-12 | 1972-01-11 | Sanyo Electric Co | Hermetically sealed dc-motor-compressor unit |
| JPS5229917A (en) * | 1975-09-03 | 1977-03-07 | Hitachi Ltd | Detection circuit for position of rotor in commutatorless motor |
-
1995
- 1995-02-20 JP JP7031050A patent/JP2675534B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3634873A (en) * | 1969-06-12 | 1972-01-11 | Sanyo Electric Co | Hermetically sealed dc-motor-compressor unit |
| JPS5229917A (en) * | 1975-09-03 | 1977-03-07 | Hitachi Ltd | Detection circuit for position of rotor in commutatorless motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000253639A (en) * | 1999-02-25 | 2000-09-14 | Matsushita Electric Ind Co Ltd | Vibrating type motor and driving controller thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2675534B2 (en) | 1997-11-12 |
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