JPH07222422A - Flip-flop-type dc motor - Google Patents
Flip-flop-type dc motorInfo
- Publication number
- JPH07222422A JPH07222422A JP6029056A JP2905694A JPH07222422A JP H07222422 A JPH07222422 A JP H07222422A JP 6029056 A JP6029056 A JP 6029056A JP 2905694 A JP2905694 A JP 2905694A JP H07222422 A JPH07222422 A JP H07222422A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- armature coil
- flip
- type
- coil
- 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
Landscapes
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転界磁型の同期電動
機の電機子コイルへ、回転子の回転位置に同期させるよ
うに電源電流を転流させながら与えて電動機の回転力を
得るフリップ・フロップ形直流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 flip for obtaining a rotating force of an electric motor by supplying a power supply current to an armature coil of a rotating field type synchronous motor while commutating the power supply current so as to synchronize with a rotating position of the rotor.・ It relates to a flop type DC motor.
【０００２】[0002]
【従来の技術】一般に、電動機には直流電力で駆動する
直流電動機と、交流電力で駆動する誘導電動機及び同期
電動機とがあるが、各種インバータの普及によりこれを
用いた電動機として、同期式電動機と非同期式電動機に
大別される。直流電動機及び同期電動機は同期式電動機
に属し、誘導電動機は非同期式電動機に属する。特に、
同期式電動機は、回転子の回転位置を検出し、この位置
信号に基づいてインバータの転流を制御し、回転子との
同期を取るようにしているため、無整流子電動機とも呼
ばれている。しかしながら、直流電動機は矩形波の交番
電流で駆動するのに対して、同期式電動機は正弦波の交
流電流で駆動する点で本質的に相違する。従って、電動
機に応じて適正な波形の電流で駆動しないと夫々の特性
が悪化し、特に高速回転機ではこれが顕著になる。2. Description of the Related Art Generally, there are DC motors driven by DC power, and induction motors and synchronous motors driven by AC power as electric motors. With the spread of various inverters, synchronous motors are used as the motors. It is roughly divided into asynchronous electric motors. DC motors and synchronous motors belong to synchronous motors, and induction motors belong to asynchronous motors. In particular,
The synchronous electric motor is also called a non-commutator electric motor because it detects the rotational position of the rotor and controls the commutation of the inverter based on this position signal to synchronize with the rotor. . However, the direct-current motor is driven by an alternating current having a rectangular wave, while the synchronous motor is essentially different in that it is driven by an alternating current having a sine wave. Therefore, each characteristic deteriorates unless it is driven by a current having an appropriate waveform according to the electric motor, and this becomes remarkable especially in a high-speed rotating machine.
【０００３】ところで、従来のフリップ・フロップ形直
流電動機は、例えば特開平３−２２８５４号公報に記載
の直流電動機のように、固定子側に二相以上の対称を成
す電機子コイルを有し、回転子側に永久磁石で形成した
磁極を有する回転界磁型の同期電動機が用いられる。電
機子コイルには、回転子の回転に同期した出力周波数で
電機子電流を転流する可変周波数変換器が接続される。
この可変周波数変換器は、位置検出器により回転子の回
転位置に応じたパルス信号を出力して回転子と電機子コ
イルとの位相関係が一定に保たれる。電動機の固定子
は、ケースの内周壁に鉄心が固着されて、この鉄心の切
溝に電機子コイルが収められている。By the way, a conventional flip-flop type DC motor has an armature coil having two or more phases of symmetry on the stator side, as in the DC motor disclosed in Japanese Patent Laid-Open No. 3-228854. A rotating field type synchronous motor having a magnetic pole formed of a permanent magnet on the rotor side is used. A variable frequency converter that commutates the armature current at an output frequency synchronized with the rotation of the rotor is connected to the armature coil.
In this variable frequency converter, the position detector outputs a pulse signal according to the rotational position of the rotor so that the phase relationship between the rotor and the armature coil is kept constant. In a stator of an electric motor, an iron core is fixed to an inner peripheral wall of a case, and an armature coil is housed in a groove of the iron core.
【０００４】[0004]
【発明が解決しようとする課題】上記従来のフリップ・
フロップ形直流電動機は、切溝の相互間隔にばらつきが
あり、またインバータ回路で電流を転流させる際の立ち
上がりに遅れが生じて完全な矩形波を作ることが困難な
ため、トルクが脈動する。また、電動機の諸特性を変更
するには、電機子コイル及び回転子などの設計、製作を
最初から別途新たにし直す必要がある。このため、出力
等の特性に比例関係などの特別の関連性を有する電動機
でも互いに無関係に別途設計、製作しなければならず、
効率が悪く、高価にもなってしまうという問題がある。
そこで、本発明は、常時一定のトルクが得られ、また諸
特性に特別の関連を有する電動機相互間で部材を共通に
用いることができるフリップ・フロップ形直流電動機を
提供することを課題としている。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the flop type DC motor, there are variations in the intervals between the cut grooves, and there is a delay in the rising when the current is commutated by the inverter circuit, and it is difficult to form a perfect rectangular wave, so the torque pulsates. Moreover, in order to change various characteristics of the electric motor, it is necessary to newly redesign and manufacture the armature coil and the rotor from the beginning. Therefore, even motors that have a special relationship such as proportionality to the output characteristics must be separately designed and manufactured independently of each other.
There is a problem that it is inefficient and expensive.
Therefore, an object of the present invention is to provide a flip-flop type DC electric motor that can obtain a constant torque at all times and can commonly use members among electric motors having special relations to various characteristics.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記課題を解
決するため、固定子１側にｎ相の対称を成す電機子コイ
ル３を有し、回転子４側に永久磁石で形成された２ｍ個
の磁極５を有する回転界磁型の同期電動機Ｍと、回転子
４の回転位置に応じたパルス信号により回転子の磁極５
とこれに対面する電機子コイル３を流れる電機子電流と
の位相関係を一定に保つように回転子の回転角に同期し
た出力周波数で電機子コイルの各相コイルへ直流定電源
電流を転流して与える可変周波数変換器Ｉとを備え、固
定子１の内周面に２ｍｎ個の切溝２を等間隔で設け、こ
の切溝２に同期電動機Ｍのｎ相の電機子コイル３を収
め、回転子４の磁極５が常時（ｎ−１）個の切溝２に対
面するようにフリップ・フロップ形直流電動機を構成し
た。In order to solve the above problems, the present invention has an armature coil 3 having n-phase symmetry on the side of the stator 1 and a permanent magnet on the side of the rotor 4. A rotating field type synchronous motor M having 2 m of magnetic poles 5, and a magnetic pole 5 of the rotor by a pulse signal according to the rotational position of the rotor 4.
And a DC constant power source current is commutated to each phase coil of the armature coil at an output frequency synchronized with the rotation angle of the rotor so that the phase relationship between the armature coil 3 and the armature current flowing through the armature coil 3 is kept constant. And a variable frequency converter I, which is provided as a variable frequency converter I, and 2 mn cut grooves 2 are provided at equal intervals on the inner peripheral surface of the stator 1, and the n-phase armature coil 3 of the synchronous motor M is housed in the cut grooves 2. The flip-flop type DC electric motor was constructed so that the magnetic poles 5 of the rotor 4 always face the (n-1) cut grooves 2.
【０００６】固定子１の隣り合う切溝２には、単一の電
機子コイル３を夫々収めた。A single armature coil 3 is housed in each of the adjacent cut grooves 2 of the stator 1.
【０００７】可変周波数変換器Ｉを、電機子コイル３に
生ずる逆起電力より高い過電圧を発生させるように、電
機子コイルが有するインダクタンスＬと転流コンデンサ
のキャパシタンスＣとから成る超強制転流型のフリップ
フロップ型インバータにした。The variable frequency converter I is a super forced commutation type composed of an inductance L of an armature coil and a capacitance C of a commutation capacitor so as to generate an overvoltage higher than the counter electromotive force generated in the armature coil 3. It was a flip-flop type inverter.
【０００８】固定子１の電機子コイル３に流す交番電流
の最大転流周波数をｆm、回転子の最大円周速度をｖmと
したときに、電機子コイルのコイルピッチをｖm/ｆmと
した。When the maximum commutation frequency of the alternating current flowing through the armature coil 3 of the stator 1 is f m and the maximum circumferential speed of the rotor is v m , the coil pitch of the armature coil is v m / f It was m .
【０００９】回転子４を、一定の軸方向長を有するリン
グ状の回転子片７を軸方向に複数重ねて固定する構成と
した。The rotor 4 has a structure in which a plurality of ring-shaped rotor pieces 7 having a constant axial length are stacked and fixed in the axial direction.
【００１０】[0010]
【作用】本発明のフリップ・フロップ形直流電動機Ｍ
は、２ｍｎ個の等間隔の切溝２にｎ相の電機子コイル３
を収め、常時磁極５が一極当たり（ｎ−１）個の切溝２
に対面するので、回転子４がどの位置にあっても磁極５
の磁界内に同数の電機子コイル３のコイル片が置かれて
一定のトルクが生ずる。Operation: Flip-flop type DC motor M of the present invention
Is an n-phase armature coil 3 in the 2 mn equally spaced kerfs 2.
And the magnetic pole 5 is always (n-1) kerfs 2 per pole.
Since the rotor 4 faces the magnetic pole 5 regardless of the position of the rotor 4,
The same number of coil pieces of the armature coil 3 are placed in the magnetic field to generate a constant torque.
【００１１】固定子１の隣り合う切溝２に、単一の電機
子コイル３を夫々収めることとすれば、コイル長が短縮
される。If a single armature coil 3 is housed in each of the adjacent cut grooves 2 of the stator 1, the coil length can be shortened.
【００１２】可変周波数変換器Ｉを、超強制転流型のフ
リップフロップ型インバータで構成すれば、電機子コイ
ル３に生ずる逆起電力より高い過電圧が発生するので、
転流の遅れが小さくなり、良好な矩形波電流が形成され
る。If the variable frequency converter I is composed of a super forced commutation type flip-flop type inverter, an overvoltage higher than the counter electromotive force generated in the armature coil 3 is generated.
The commutation delay is reduced and a good rectangular wave current is formed.
【００１３】固定子１の電機子コイル３に流す交番電流
の最大転流周波数をｆm、回転子の最大円周速度をｖmと
したときに、電機子コイル３のコイルピッチをｖm/ｆm
とすれば、最大転流周波数ｆm及び回転子４の最大円周
速度ｖmが同一であるが各種寸法の異なる電動機Ｍに対
しても、同一の電機子コイル３を適用することができ
る。When the maximum commutation frequency of the alternating current flowing through the armature coil 3 of the stator 1 is f m and the maximum circumferential velocity of the rotor is v m , the coil pitch of the armature coil 3 is v m / f m
Then, the same armature coil 3 can be applied to the electric motors M having the same maximum commutation frequency f m and the maximum circumferential velocity v m of the rotor 4, but different dimensions.
【００１４】回転子４を回転子片７で形成することによ
り、単一の回転子片７の整数倍の大きさの磁極が形成さ
れる。このため、回転子１の径、磁束密度、磁極数、電
機子コイル３の巻数、電機子電流、コイルの相数を一定
に保持したまま、磁極の磁界内に置かれるコイル辺の長
さが整数倍になり、コイル辺の長さに比例して出力も容
易に変更できる。従って、この回転子片７を規格化する
と、特性の異なる電動機間で共通の回転子片７を用いる
ことができる。このため、電動機Ｍの諸特性の変更によ
る設計、製作が容易になる。By forming the rotor 4 with the rotor piece 7, a magnetic pole having an integral multiple of the size of the single rotor piece 7 is formed. Therefore, the diameter of the rotor 1, the magnetic flux density, the number of magnetic poles, the number of turns of the armature coil 3, the armature current, and the number of phases of the coil are kept constant, and the length of the coil side placed in the magnetic field of the magnetic pole is It becomes an integral multiple, and the output can be easily changed in proportion to the length of the coil side. Therefore, when the rotor piece 7 is standardized, the common rotor piece 7 can be used by electric motors having different characteristics. Therefore, designing and manufacturing by changing various characteristics of the electric motor M becomes easy.
【００１５】[0015]
【実施例】本発明の実施例を図面を参照して説明する。
図１において、Ｍは、展開された状態の４極３相の同期
電動機である。この同期電動機Ｍには、電機子コイル３
がコンバータ回路Ｃｏ及び超強制転流回路Ｉを介して三
相電源Ｓに接続される。コンバータ回路Ｃｏは三相交流
電流を直流電流に変換し、超強制転流回路Ｉが直流電流
を矩形波状に交互に転流して電機子コイル３の励磁電流
を供給する。超強制転流回路Ｉによる転流動作は、回転
子４の回転に同期するように位置検出器Ｄで回転子４の
回転位置を検出し、その出力を受けて電流制御器Ｔ1が
サイリスタのゲート電流を制御する。また、コンバータ
回路Ｃｏの出力電流は定電流制御器Ｔ2が制御する。Embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, M is a 4-pole 3-phase synchronous motor in a deployed state. The synchronous motor M includes an armature coil 3
Is connected to the three-phase power source S via the converter circuit Co and the super-forced commutation circuit I. The converter circuit Co converts a three-phase alternating current into a direct current, and the super-forced commutation circuit I alternately commutates the direct current in a rectangular wave shape to supply the exciting current of the armature coil 3. In the commutation operation by the super forced commutation circuit I, the position detector D detects the rotational position of the rotor 4 so as to synchronize with the rotation of the rotor 4, and the current controller T 1 receives the output and detects the thyristor. Control the gate current. Further, the constant current controller T 2 controls the output current of the converter circuit Co.
【００１６】図２に示すように、同期電動機Ｍは回転界
磁型であり、電機子コイル３がｎ相であり、磁極５が２
ｍ極であれば、切溝２は２ｍｎ個設けられる。即ち、本
実施例では、３相４極の電動機であるから、固定子鉄心
１には等間隔に１２個の切溝２が形成される。この切溝
２には、図３に示すように、１相当たり４個の電機子コ
イル３が３相（ａ相，ｂ相，ｃ相）同一順で配置され、
従って１相の各電機子コイル３は内側に二つの切溝２を
おいて収められる。そして、各切溝２には同相の二つの
電機子コイル３，３のコイル辺が上下に重なって収めら
れる。図３における同相の隣り合う電機子コイル３，３
は互いに逆方向に巻かれている。回転子４の磁極５は、
永久磁石から成り、電機子コイルがｎ相のとき、各磁極
５がｎ−１個の切溝２に対面するように周方向の長さが
寸法設定されている。即ち、本実施例では、図４に示す
ように、一の磁極５が常に２個の切溝２に対面する。磁
極５は回転子４の周方向に等間隔で設けられている。こ
の回転子４は図５，図６に示すように、リング状の回転
子片７が回転軸６状に軸方向へ複数の重ねられ固定され
ている。As shown in FIG. 2, the synchronous motor M is of the rotating field type, the armature coil 3 is of n phase, and the magnetic pole 5 is 2.
If it is an m pole, 2 mn cut grooves 2 are provided. That is, in this embodiment, since the motor is a three-phase, four-pole motor, twelve cut grooves 2 are formed in the stator core 1 at equal intervals. In this cut groove 2, as shown in FIG. 3, four armature coils 3 per phase are arranged in the same order of three phases (a phase, b phase, c phase),
Therefore, each one-phase armature coil 3 is housed with two kerfs 2 inside. Then, the coil sides of the two armature coils 3 and 3 of the same phase are housed in each kerf 2 so as to be vertically overlapped. In-phase adjacent armature coils 3, 3 in FIG.
Are wound in opposite directions. The magnetic pole 5 of the rotor 4 is
When the armature coil is made of a permanent magnet and has an n-phase, the length in the circumferential direction is dimensioned so that each magnetic pole 5 faces the n-1 kerfs 2. That is, in this embodiment, as shown in FIG. 4, one magnetic pole 5 always faces the two kerfs 2. The magnetic poles 5 are provided at equal intervals in the circumferential direction of the rotor 4. As shown in FIGS. 5 and 6, the rotor 4 has a plurality of ring-shaped rotor pieces 7 which are axially stacked and fixed on the rotary shaft 6 in the axial direction.
【００１７】図１において、超強制転流回路Ｉは、電機
子コイル３の有するインダクタンスＬと、転流コンデン
サの有するキャパシタンスＣとで共振回路を構成する。
これにより、１相の電機子コイル３に生じる逆起電力Ｅ
は電源側電圧Ｖ0に対し、Ｖ0＞２Ｅの関係になるので、
転流時の立ち上がりの遅れを小さくし、良好な矩形波電
流を形成することができる。In FIG. 1, the super forced commutation circuit I constitutes a resonance circuit by the inductance L of the armature coil 3 and the capacitance C of the commutation capacitor.
As a result, the counter electromotive force E generated in the one-phase armature coil 3 is generated.
Has a relationship of V 0 > 2E with respect to the power supply side voltage V 0 ,
It is possible to form a good rectangular wave current by reducing the rising delay at the time of commutation.
【００１８】上記実施例の電動機Ｍは、電機子コイル３
の各相に図１に示す実線矢印の方向に電流が流れると、
２個の切溝２内の電機子コイル３のコイル辺が、対面し
ている回転子４の磁極５の磁界内に置かれるので、回転
力が生ずる。そして、回転子４が所定位置になったら、
位置検出器Ｄがこれを検出し、電流制御器Ｔ1で超強制
転流回路Ｉを転流動作させる。従って、電機子コイル３
には、図３の破線矢印の向きに電流の向きが切り替わ
る。このように、磁極５が対面する電機子コイル３に
は、磁極５に対して相対的に同一方向の電流が流れてほ
ぼ連続的に回転力が生じる。The electric motor M of the above embodiment is composed of the armature coil 3
When current flows in each phase in the direction of the solid arrow shown in FIG. 1,
Since the coil sides of the armature coil 3 in the two kerfs 2 are placed in the magnetic field of the magnetic pole 5 of the facing rotor 4, a rotational force is generated. Then, when the rotor 4 is in the predetermined position,
The position detector D detects this and the current controller T 1 causes the super-forced commutation circuit I to perform commutation operation. Therefore, the armature coil 3
, The direction of the current is switched to the direction of the broken line arrow in FIG. In this way, in the armature coil 3 facing the magnetic pole 5, a current flows in the same direction relative to the magnetic pole 5, and a rotational force is generated almost continuously.
【００１９】電動機Ｍにおいては、回転子４を回転子片
７で構成することにより、単一の回転子片７の磁極５の
整数倍の大きさの磁極５が形成される。これにより、回
転子の径、磁束密度、磁極数、電機子コイルの巻数、コ
イルの相数を一定に保持したまま、磁束数及びコイル辺
長さを基準値の整数倍に変更できる。即ち、回転子の径
Ｄ、磁束密度Ｂ、磁極数２ｍ、電機子コイルの巻数Ｎ、
電機子コイルの相数ｎ、回転子の周速度ｖ、電機子電流
Ｉを一定に保持したまま、コイル辺長さｌDを基準値の
整数倍にすれば、駆動力は、Ｆ＝Ｂ・ｌD・ｎＮＩ・２
ｍ・（ｎ−１）／ｎであるから、駆動力Ｆも整数倍にな
る。また、誘起電圧Ｅ＝Ｂ・ｖ・ｌD・ｎＮ・２ｍ・
（ｎ−１）／ｎであるから、出力Ｐo＝Ｅ・Ｉ＝Ｉ・Ｂ
・ｖ・ｌD・ｎＮ・２ｍ・（ｎ−１）／ｎとなり、出力
Ｐoも整数倍になる。これを基に、回転子片７を規格化
して、その構成数を選択すれば、駆動力あるいは出力の
異なる電動機の設計、製作が容易になる。In the electric motor M, by forming the rotor 4 with the rotor piece 7, the magnetic pole 5 having an integral multiple of the magnetic pole 5 of the single rotor piece 7 is formed. This makes it possible to change the number of magnetic fluxes and the coil side length to an integral multiple of the reference value while keeping the rotor diameter, magnetic flux density, number of magnetic poles, number of armature coil windings, and number of coil phases constant. That is, the diameter D of the rotor, the magnetic flux density B, the number of magnetic poles 2 m, the number N of turns of the armature coil,
If the coil side length l D is set to an integral multiple of the reference value while the armature coil phase number n, the rotor peripheral speed v, and the armature current I are held constant, the driving force is F = B. l D · nNI · 2
Since m · (n−1) / n, the driving force F also becomes an integral multiple. In addition, the induced voltage E = B · v · l D · nN · 2m ·
Since (n-1) / n, the output Po = E · I = I · B
· V · l D · nN · 2m · (n-1) / n and the output Po becomes an integer multiple. Based on this, if the rotor pieces 7 are standardized and the number of constituents is selected, the design and manufacture of electric motors having different driving forces or outputs becomes easy.
【００２０】回転子４の磁極５の周方向長をｌM、電機
子コイルのコイルピッチをｌP、電機子コイル５の相数
をｎ、回転子５の直径をＤとすると、ｌM＝ｌP（ｎ−
１）／ｎとなる。即ち、本実施例の電動機Ｍにおいては
ｌM＝（２／３）ｌPである。ここで、ｌP＝πＤ／４で
あるから、ｌM＝πＤ／６となる。 Assuming that the circumferential length of the magnetic pole 5 of the rotor 4 is l M , the coil pitch of the armature coil is l P , the number of phases of the armature coil 5 is n, and the diameter of the rotor 5 is D, then l M = l P (n-
1) / n. That is, in the electric motor M of this embodiment, l M = (2/3) l P. Here, since I P = πD / 4, I M = πD / 6.
【００２１】ところで、電動機の磁極の周方向長は、上
記のように、ｌM＝ｌP（ｎ−１）／ｎであり、電動機の
回転数をＲ、転流周波数をｆとすると、ｖ＝πＤＲ、ｌ
P≒２πＤ／２ｍ、ｆ≒ｖ／ｌPとなるので、ｆ＝ｍＲと
なる。By the way, the circumferential length of the magnetic poles of the electric motor is l M = l P (n-1) / n as described above, where v is the rotation speed of the electric motor and f is the commutation frequency. = ΠDR, l
Since P ≈ 2πD / 2m and f ≈ v / l P , f = mR.
【００２２】ここで、転流周波数の最大限界値をｆm、
回転子の周速度の最大限界値をｖmとすると、ｌP＝ｖm
／ｆm＝Ｋ、Ｄ＝Ｋｍ／π、Ｒ＝ｆm／ｍ、となる。これ
らの関係式より、ｆm及びｖmを決めると、ｌPが一定値
となるので、電動機の断面形状及び寸法は回転子の２ｍ
によって一義的に定まる。これらの関係は、フリップ・
フロップ形直流電動機の設計及び製作の規格化を図る上
で、さらに有効である。Here, the maximum limit value of the commutation frequency is f m ,
Let v m be the maximum limit value of the peripheral speed of the rotor, then l P = v m
/ F m = K, D = Km / π, and R = f m / m. When f m and v m are determined from these relational expressions, l P becomes a constant value, so the cross-sectional shape and dimensions of the electric motor are 2 m of the rotor.
Is uniquely determined by These relationships are
It is more effective in standardizing the design and manufacture of the flop type DC motor.
【００２３】他の実施例を図７乃至図９に示す。この実
施例では先の実施例における電動機Ｍの切溝２を若干広
めにとり、横方向に電機子コイル３のコイル片を並べて
収めることとし、隣り合う切溝２間に形成される凸部１
ａに夫々単一の電機子コイル３を巻くようにしたもので
ある。これにより、先の実施例のモータＭと同一の作用
を行うほか、電機子コイル３の周方向長が短縮される。Another embodiment is shown in FIGS. 7 to 9. In this embodiment, the cut groove 2 of the electric motor M in the previous embodiment is set to be slightly wider, and the coil pieces of the armature coil 3 are arranged side by side in the lateral direction to accommodate the convex portion 1 formed between the adjacent cut grooves 2.
A single armature coil 3 is wound around each a. As a result, the same operation as that of the motor M of the previous embodiment is performed, and the circumferential length of the armature coil 3 is shortened.
【００２４】[0024]
【発明の効果】以上のように、本発明は、切溝２を等間
隔に形成し、ｎ相の電機子コイル３に対してｎ−１個の
切溝２に回転子磁極５を対応させたため、脈動すること
なく常時ほぼ一定の回転トルクを得ることができ、また
電機子コイルが短縮されるので、コイル材料を節約で
き、さらに超強制転流回路で良好な矩形波電流を形成す
ることができるので、回転トルクの安定度が増し、しか
も電動機の諸特性を変更するのに、電機子コイル及び回
転子などの設計、製作を最初から別途行う労力が軽減さ
れるので、さらに製作が容易になり、安価に電動機を提
供できるという効果を有する。As described above, according to the present invention, the cut grooves 2 are formed at equal intervals, and the rotor magnetic poles 5 are associated with the n-1 cut grooves 2 for the n-phase armature coil 3. Therefore, almost constant rotating torque can be always obtained without pulsation, and the armature coil is shortened, so that coil material can be saved and a good rectangular wave current can be formed by the super forced commutation circuit. The stability of the rotating torque is increased, and the effort to separately design and manufacture the armature coil and the rotor from the beginning to change various characteristics of the motor is reduced, which makes the manufacturing easier. Therefore, there is an effect that an electric motor can be provided at low cost.
【図１】本発明に係る電動機の回路図である。FIG. 1 is a circuit diagram of an electric motor according to the present invention.
【図２】電動機の概略的正面図である。FIG. 2 is a schematic front view of an electric motor.
【図３】電機子コイルの展開図である。FIG. 3 is a development view of an armature coil.
【図４】電動機の展開状態の正面図である。FIG. 4 is a front view of a developed state of the electric motor.
【図５】回転子の正面図である。FIG. 5 is a front view of a rotor.
【図６】回転子片の側面図である。FIG. 6 is a side view of a rotor piece.
【図７】他の実施例の電動機の概略的正面図である。FIG. 7 is a schematic front view of an electric motor according to another embodiment.
【図８】他の実施例の電機子コイルの展開図である。FIG. 8 is a development view of an armature coil of another embodiment.
【図９】他の実施例の電動機の展開状態の正面図であ
る。FIG. 9 is a front view of a developed state of an electric motor according to another embodiment.
１ 固定子鉄芯 ２ 切溝 ３ 電機子コイル ４ 回転子 ５ 磁極 ７ 回転子片 Ｍ 同期電動機 Ｃｏ コンバータ回路 Ｉ 超強制転流回路 Ｄ 位置検出器 Ｔ1 電流制御器 Ｔ2 定電流制御器 Ｌ インダクタンス Ｃ キャパシタンス1 stator iron core 2 kerf 3 armature coil 4 rotor 5 magnetic pole 7 rotor piece M synchronous motor Co converter circuit I super forced commutation circuit D position detector T 1 current controller T 2 constant current controller L inductance C capacitance
───────────────────────────────────────────────────── フロントページの続き (72)発明者 疋田 憲司 東京都品川区南品川６丁目５番19号 三和 テッキ株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Hikita 6-5-19 Minami-Shinagawa, Shinagawa-ku, Tokyo Sanwa Techk Co., Ltd.
Claims (5)
ルを有し、回転子側に永久磁石で形成された２ｍの磁極
を有する回転界磁型の同期電動機と、回転子の回転位置
に応じたパルス信号により回転子の磁極とこれに対面す
る電機子コイルを流れる電機子電流との位相関係を一定
に保つように回転子の回転角に同期した出力周波数で電
機子コイルの各相コイルへ直流定電源電流を転流して与
える可変周波数変換器とを備え、 前記同期電動機のｎ相の電機子コイルは、固定子の内周
面に等間隔で２ｍｎ個設けられた切溝に収められ、前記
回転子の磁極が常時（ｎ−１）個の切溝に対面すること
を特徴とするフリップ・フロップ形直流電動機。1. A rotary field type synchronous motor having an armature coil having n-phase symmetry on the stator side and having a magnetic pole of 2 m formed by a permanent magnet on the rotor side, and rotation of the rotor. Each pulse of the armature coil is synchronized with the rotation angle of the rotor so that the phase relationship between the magnetic pole of the rotor and the armature current flowing through the armature coil facing it is kept constant by the pulse signal according to the position. And a variable frequency converter for commutating a DC constant power source current to the phase coil, wherein the n-phase armature coil of the synchronous motor is provided with 2mn cut grooves provided at equal intervals on the inner peripheral surface of the stator. A flip-flop type DC electric motor housed in which the magnetic poles of the rotor always face (n-1) kerfs.
子コイルを夫々収めることを特徴とする請求項１に記載
のフリップ・フロップ形直流電動機。2. The flip-flop type DC electric motor according to claim 1, wherein a single armature coil is housed in each of adjacent cut grooves of the stator.
に生ずる逆起電力より高い過電圧を発生させるため、電
機子コイルが有するインダクタンスと転流コンデンサの
キャパシタンスとから成る超強制転流型のフリップフロ
ップ型インバータであることを特徴とする請求項１に記
載のフリップ・フロップ形直流電動機。3. The variable frequency converter generates an overvoltage higher than a back electromotive force generated in an armature coil, and therefore, a super forced commutation type flip-flop composed of an inductance of an armature coil and a capacitance of a commutation capacitor. 2. The flip-flop type DC motor according to claim 1, wherein the flip-flop type DC motor is a pull-up type inverter.
流の最大転流周波数をｆm、回転子の最大円周速度をｖm
とするときに、電機子コイルのコイルピッチがｖm/ｆm
であることを特徴とする請求項１に記載のフリップ・フ
ロップ形直流電動機。4. A maximum commutation frequency f m of the alternating current supplied to the armature coil of the stator, the maximum circumferential speed of the rotor v m
And the coil pitch of the armature coil is v m / f m
The flip-flop type DC motor according to claim 1, wherein
リング状の回転子片を、軸方向に複数重ねて固定するこ
とを特徴とする請求項１に記載のフリップ・フロップ形
直流電動機。5. The flip-flop type DC electric motor according to claim 1, wherein the rotor is formed by fixing a plurality of ring-shaped rotor pieces having a constant axial length in a stacked manner in the axial direction. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6029056A JPH07222422A (en) | 1994-02-01 | 1994-02-01 | Flip-flop-type dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6029056A JPH07222422A (en) | 1994-02-01 | 1994-02-01 | Flip-flop-type dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07222422A true JPH07222422A (en) | 1995-08-18 |
Family
ID=12265720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6029056A Pending JPH07222422A (en) | 1994-02-01 | 1994-02-01 | Flip-flop-type dc motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07222422A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6396183B1 (en) | 1996-04-12 | 2002-05-28 | Hitachi, Ltd. | Permanent magnet rotating electric machine and electrically driven vehicle employing same |
-
1994
- 1994-02-01 JP JP6029056A patent/JPH07222422A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6396183B1 (en) | 1996-04-12 | 2002-05-28 | Hitachi, Ltd. | Permanent magnet rotating electric machine and electrically driven vehicle employing same |
| US6734592B2 (en) | 1996-04-12 | 2004-05-11 | Hitachi, Ltd. | Permanent magnet rotating electric machine and electrically driven vehicle employing same |
| US6949856B2 (en) | 1996-04-12 | 2005-09-27 | Hitachi, Ltd. | Permanent magnet rotating electric machine and electrically driven vehicle employing same |
| US7196447B2 (en) | 1996-04-12 | 2007-03-27 | Hitachi, Ltd. | Rotating electric machine |
| US7215055B2 (en) | 1996-04-12 | 2007-05-08 | Hitachi, Ltd. | Vehicle |
| US7417349B2 (en) | 1996-04-12 | 2008-08-26 | Hitachi, Ltd. | Driving apparatus |
| US7671502B2 (en) | 1996-04-12 | 2010-03-02 | Hitachi, Ltd. | Driving apparatus |
| US7956506B2 (en) | 1996-04-12 | 2011-06-07 | Hitachi, Ltd. | Driving apparatus |
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