JPH06315293A - Driving equipment for permanent magnet type motor - Google Patents

Driving equipment for permanent magnet type motor

Info

Publication number
JPH06315293A
JPH06315293A JP5100662A JP10066293A JPH06315293A JP H06315293 A JPH06315293 A JP H06315293A JP 5100662 A JP5100662 A JP 5100662A JP 10066293 A JP10066293 A JP 10066293A JP H06315293 A JPH06315293 A JP H06315293A
Authority
JP
Japan
Prior art keywords
motor
energization
stator
stator windings
angles
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
Application number
JP5100662A
Other languages
Japanese (ja)
Inventor
Shigeya Tanimoto
茂也 谷本
Mayumi So
まゆみ 楚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP5100662A priority Critical patent/JPH06315293A/en
Publication of JPH06315293A publication Critical patent/JPH06315293A/en
Pending legal-status Critical Current

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  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To utilize effectively torques generated between the stator windings and the rotor core of a permanent magnet type motor, by so setting respectively the energization starting angles of the stator windings of the motor and their energization angles as to be in the specified ranges of electric angles, and by applying rectangular wave voltages in succession to the stator windings of the respective phases of the motor in the preset timings of their energization. CONSTITUTION:In a driving equipment for a permanent magnent type motor, by a control circuit 15, the energization starting angles of stator windings 1U-4W of the respective phases of the motor are so set as to be in the ranges of the electric angles of 0 deg.-30 deg. and 180 deg.-210 deg. relative to one period of each phase, based on the positional sensings relative to the induced voltages of the motor, and also, the energization angles of the stator windings 1U-4W are so set as to be in the ranges of the electric angles of 120 deg.-150 deg. relative to the respective phases the motor. Further, the respective transistors 13 of the equipment are switched on or off by the control circuit 15 in order that rectangular wave voltages are applied in succession to the stator windings 1U-4W of the respective phases of the motor in the preset timing of the energization, and thereby, the motor is driven. As a result, the torques generated between the stator windings1U-4W and the rotor core of the motor can be utilized effectively.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、連続してN極およびS
極に着磁された永久磁石を鉄心内部に組み込んだ構成の
回転子を有する永久磁石形モータの駆動装置に関する。
BACKGROUND OF THE INVENTION The present invention is a continuous north pole and south pole.
The present invention relates to a drive device for a permanent magnet type motor having a rotor having a structure in which permanent magnets magnetized to poles are incorporated inside an iron core.

【0002】[0002]

【従来の技術】永久磁石形モータにおいては、最近、高
トルク化および高効率化を図ったモータが開発されてい
る。このものの構造を図6に示す。すなわち、回転子1
は、回転子軸2に鉄心3を嵌合固着し、この鉄心3の内
部に、N極、S極に着磁された永久磁石4,5,6,7
が軸方向から挿入されて組込まれている。なお、固定子
8は、固定子鉄心9の24個のスロットS1〜S24に
U相巻線1U,2U,3U,4UおよびV相巻線1V,
2V,3V,4V並びにW相巻線1W,2W,3W,4
Wを挿入配置(図7参照)して構成されている。このモ
ータは、可変電圧可変周波数電源いわゆるインバータに
より給電されるようになっている。
2. Description of the Related Art Recently, as a permanent magnet type motor, a motor having high torque and high efficiency has been developed. The structure of this product is shown in FIG. That is, the rotor 1
Has an iron core 3 fitted and fixed to a rotor shaft 2, and inside the iron core 3, permanent magnets 4, 5, 6, 7 magnetized to have N poles and S poles.
Is inserted and incorporated from the axial direction. The stator 8 includes U-phase windings 1U, 2U, 3U, 4U and V-phase windings 1V, 24V in the 24 slots S1 to S24 of the stator core 9.
2V, 3V, 4V and W-phase windings 1W, 2W, 3W, 4
It is configured by inserting W (see FIG. 7). This motor is adapted to be powered by a variable voltage, variable frequency power supply, a so-called inverter.

【0003】上記構成の固定子8の各固定子巻線1Uな
いし4Wに対して、インバータからU,V,Wの各相に
対して2相ずつ、一般によく用いられる図8に示すよう
な120°(電気角)通電されると、これにより発生す
る磁気的な吸引力および反発力すなわちトルクにより回
転子1が回転する。
For each of the stator windings 1U to 4W of the stator 8 having the above-mentioned structure, two phases for each phase of the U, V, W from the inverter are commonly used, as shown in FIG. When energized by an electric angle (electrical angle), the rotor 1 is rotated by the magnetic attraction force and repulsive force, that is, torque generated thereby.

【0004】[0004]

【発明が解決しようとする課題】ところで、上述の構成
の永久磁石形モータにおいては、回転子1の鉄心3が空
隙に直接面していることから、特に永久磁石4ないし7
の各間の部分A(図10および図11参照)と、固定子
巻線1Uないし4Wに流れる電流の磁束との間で吸引力
すなわちリラクタンストルク(第2のトルクと称する)
が作用する。図9には、空隙磁束密度と、固定子巻線1
Uないし4Wに流れる電流と永久磁石4ないし7によっ
て発生するU相、V相、W相のトルクと、これらトルク
を合成したトルク(第1のトルクと称する)と、前記第
2のトルクとの位相関係を示している。
By the way, in the permanent magnet type motor having the above-mentioned structure, since the iron core 3 of the rotor 1 directly faces the air gap, the permanent magnets 4 to 7 in particular.
Between portions A (see FIGS. 10 and 11) and the magnetic flux of the current flowing through the stator windings 1U to 4W, that is, attractive force, that is, reluctance torque (referred to as second torque).
Works. FIG. 9 shows the air gap magnetic flux density and the stator winding 1.
Of the U-phase, V-phase, and W-phase torques generated by the currents flowing through U to 4W and the permanent magnets 4 to 7, the combined torque of these torques (referred to as first torque), and the second torque. The phase relationship is shown.

【0005】しかし、図8のようなタイミングで通電す
る場合には、上記第2のトルクは、図9に示すように通
電1周期において、回転方向のトルク、反回転方向のト
ルクとして作用し、そのトルクの大きさは等しくなる。
図10は図8の通電タイミング「1」の直後を示してい
る。同図の「×」および「○」は電流の向きを示してお
り、「×」は紙面表から裏への流れを示し、「○」は紙
面裏から表への流れを示している。U相の巻線とW相の
巻線とによる磁極中心と、回転子磁極中心とは120°
(電気角)の位置にある。図11は図8の通電タイミン
グ「3」の直前のときを示しており、U相の巻線とW相
の巻線とによる磁極中心と、回転子磁極中心とは60°
(電気角)の位置にある。
However, in the case of energizing at the timing as shown in FIG. 8, the second torque acts as torque in the rotating direction and torque in the counter rotating direction in one energizing cycle as shown in FIG. The magnitude of the torque becomes equal.
FIG. 10 shows immediately after the energization timing “1” in FIG. In the figure, "x" and "o" indicate the direction of the electric current, "x" indicates the flow from the front to the back of the paper, and "o" indicates the flow from the back to the front of the paper. The magnetic pole center by the U-phase winding and the W-phase winding and the rotor magnetic pole center are 120 °
(Electrical angle) position. FIG. 11 shows the time immediately before the energization timing “3” in FIG. 8, and the magnetic pole center of the U-phase winding and the W-phase winding and the rotor magnetic pole center are 60 °.
(Electrical angle) position.

【0006】このいずれの場合も、U相の巻線とW相の
巻線とに電流が流れているが、図10では第2のトルク
は、矢印Taで示すように、固定子磁極の作用により回
転方向(これは矢印Bで示す)に第2のトルクが生じて
いる。一方、図11では第2のトルクは固定子磁極の作
用で反回転方向にトルクが生じている。この結果、図8
における通電区間「1−2−3」においては有効トルク
としては「0」である。この第2のトルクは、他の通電
区間においても、「0」であるので、結局、図8のよう
な従来の通電タイミングにおいては、第2のトルクは回
転に寄与せず、有効なトルクとはなっていなかった。
In any of these cases, current flows through the U-phase winding and the W-phase winding, but in FIG. 10, the second torque acts on the stator magnetic poles as shown by the arrow Ta. Causes a second torque in the direction of rotation (which is indicated by arrow B). On the other hand, in FIG. 11, the second torque is generated in the counter-rotational direction by the action of the stator magnetic poles. As a result, FIG.
The effective torque is “0” in the energization section “1-2-3”. Since the second torque is "0" even in the other energization sections, the second torque does not contribute to the rotation at the conventional energization timing as shown in FIG. It wasn't

【0007】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、固定子巻線と回転子鉄心との間に発
生するトルクの有効利用を図り、もって、効率向上を可
能とし、またモータの小形化を可能とする永久磁石形モ
ータの駆動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 thereof is to effectively utilize the torque generated between the stator windings and the rotor core, thereby improving efficiency. Another object of the present invention is to provide a drive device for a permanent magnet type motor which enables downsizing of the motor.

【0008】[0008]

【課題を解決するための手段】本発明の永久磁石形モー
タの制御装置は、複数相の固定子巻線を有する固定子
と、N極およびS極に着磁された永久磁石を鉄心内部に
交互に組み込んで有する回転子とを備えた永久磁石形モ
ータを駆動するものにおいて、前記回転子の位置を検出
する位置検出手段と、前記固定子巻線に対する通電開始
角度を、各相の1周期において0°以上から30°未満
の範囲および180゜以上から210°未満の範囲の電
気角度に設定し、且つその通電角度を、120°以上か
ら150°未満の範囲の電気角度に設定した通電タイミ
ング設定手段と、設定された前記通電タイミングで各相
巻線に順次矩形波電圧を印加する駆動制御手段とを具備
して成るところに特徴を有する。
In a controller for a permanent magnet type motor according to the present invention, a stator having stator windings of a plurality of phases and permanent magnets magnetized to N poles and S poles are provided inside an iron core. In a drive for a permanent magnet type motor having rotors incorporated alternately, a position detecting means for detecting the position of the rotor and an energization start angle for the stator winding are set to one cycle of each phase. At 0 ° to less than 30 ° and 180 ° to less than 210 ° in the electrical angle, and the energizing angle is set to an electrical angle in the range of 120 ° to less than 150 ° It is characterized in that it comprises a setting means and a drive control means for sequentially applying a rectangular wave voltage to each phase winding at the set energization timing.

【0009】この場合、位置検出手段は、固定子巻線の
誘起電圧に基づいて回転子の位置を検出する構成として
も良い。
In this case, the position detecting means may detect the position of the rotor based on the induced voltage in the stator winding.

【0010】[0010]

【作用】上記手段によれば、通電タイミング設定手段
は、固定子巻線に対する通電開始角度を、各相の1周期
において0°以上から30°未満の範囲および180゜
以上から210°未満の電気角度とし、且つその通電角
度を、120°以上から150°未満の範囲の電気角度
としているから、固定子巻線と回転子鉄心とで発生する
トルクが、固定子巻線と回転子の永久磁石の相互作用に
よって発生するトルクに加えられることになり、回転方
向のトルクが増大する。
According to the above-mentioned means, the energization timing setting means sets the energization start angle for the stator winding to an electric power range of 0 ° to less than 30 ° and 180 ° to less than 210 ° in one cycle of each phase. Since the angle is the angle and the energization angle is the electrical angle in the range of 120 ° or more and less than 150 °, the torque generated between the stator winding and the rotor core is the permanent magnet of the stator winding and the rotor. In addition to the torque generated by the interaction between the two, the torque in the rotation direction increases.

【0011】[0011]

【実施例】以下、本発明の一実施例につき図1ないし図
6を参照しながら説明する。永久磁石形モータの構成
は、図6に示した通りで、従って、回転子1は、回転子
軸2に鉄心3を嵌合固着し、この鉄心3内部に、N極、
S極に着磁された永久磁石4,5,6,7を軸方向から
挿入して交互に組込んだ構成となっている。なお、固定
子8は、固定子鉄心9の24個のスロットS1〜S24
にU相巻線1U,2U,3U,4UおよびV相巻線1
V,2V,3V,4V並びにW相巻線1W,2W,3
W,4Wを挿入配置して構成されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The structure of the permanent magnet type motor is as shown in FIG. 6. Therefore, the rotor 1 has the iron core 3 fitted and fixed to the rotor shaft 2, and the inside of the iron core 3 has the N pole,
The permanent magnets 4, 5, 6, 7 magnetized to the S pole are inserted from the axial direction and are alternately incorporated. The stator 8 has 24 slots S1 to S24 of the stator core 9.
U phase winding 1U, 2U, 3U, 4U and V phase winding 1
V, 2V, 3V, 4V and W phase winding 1W, 2W, 3
It is configured by inserting and arranging W and 4W.

【0012】図1において、上記モータの駆動装置を示
している。直流電源11には、スイッチング主回路12
が接続されている。このスイッチング主回路12は、6
個のトランジスタ13および還流ダイオード14が3相
ブリッジ接続されて構成されている。このスイッチング
主回路12において各アーム部12u,12v,12w
が有するトランジスタ13の共通接続点に各固定子巻線
1Uないし4Wが接続されている。
FIG. 1 shows a drive device for the motor. The DC power supply 11 includes a switching main circuit 12
Are connected. This switching main circuit 12 has 6
The individual transistors 13 and the free wheeling diodes 14 are configured by three-phase bridge connection. In this switching main circuit 12, each arm portion 12u, 12v, 12w
Each of the stator windings 1U to 4W is connected to a common connection point of the transistor 13 included in.

【0013】一方、制御回路15は、位置検出手段、通
電タイミング設定手段および駆動制御手段として機能す
るものである。まず、位置検出手段としての機能につい
て述べる。この制御回路15には、固定子巻線1Uない
し4Wの端子電圧Vu,Vv,Vwが与えられるように
なっており、この端子電圧Vu,Vv,Vwには、巻線
に対する印加電圧の他に誘起電圧があらわれるものであ
る。しかして、この誘起電圧(ほぼ正弦波形)の位相と
回転子1の位置とは相間関係にあり、この誘起電圧の位
相から回転子1の位置を検出するようになっている。
On the other hand, the control circuit 15 functions as position detecting means, energization timing setting means and drive control means. First, the function as the position detecting means will be described. The control circuit 15 is provided with terminal voltages Vu, Vv, Vw of the stator windings 1U to 4W, and the terminal voltages Vu, Vv, Vw include the voltage applied to the windings. The induced voltage appears. Then, the phase of this induced voltage (substantially sinusoidal waveform) and the position of the rotor 1 have a phase relationship, and the position of the rotor 1 is detected from the phase of this induced voltage.

【0014】次に通電タイミング設定手段としての機能
について述べる。制御回路15は、上述した誘起電圧か
らの位置検出に基づいて、図2に示すように、各相の固
定子巻線1Uないし4Wに対する通電開始角度を、各相
の1周期において電気角0°および180°とし、且つ
その通電角度を電気角度120°としている。
Next, the function of the energization timing setting means will be described. Based on the position detection from the induced voltage described above, the control circuit 15 sets the energization start angle to the stator windings 1U to 4W of each phase to an electrical angle of 0 ° in one cycle of each phase, as shown in FIG. And 180 °, and the energization angle is an electrical angle of 120 °.

【0015】駆動制御手段としての機能について述べ
る。制御回路15は、上述の通電タイミングで各相の固
定子巻線1Uないし4Wに順次矩形波電圧(図2に示
す)を印加すべく前記各トランジスタ13をオンオフ
し、もってモータを駆動するようになっている。
The function as drive control means will be described. The control circuit 15 turns on / off each transistor 13 in order to sequentially apply a rectangular wave voltage (shown in FIG. 2) to the stator windings 1U to 4W of each phase at the above-mentioned energization timing, and thus drives the motor. Has become.

【0016】さて、上記構成において、固定子磁極と回
転子1の位置関係から第2のトルクの発生について説明
する。図2においては、従来の図8で示した通電タイミ
ングより30°(電気角)早く通電しているので、従来
の図10および図11で示した位置に相当する第2のト
ルクの作用状態は、図3および図4に示すようになって
いる。すなわち、図3においては、固定子磁極中心と回
転子磁極中心とは電気角度150°の位置にあり、また
図4においては電気角度90°の位置にある。この図3
および図4から判るように、回転子1の反対方向に第2
のトルク(矢印Taをもって示す)が作用することはな
い。
Now, in the above configuration, the generation of the second torque will be described based on the positional relationship between the stator magnetic poles and the rotor 1. In FIG. 2, since the current is supplied 30 ° (electrical angle) earlier than the current supply timing shown in FIG. 8, the second torque corresponding to the conventional position shown in FIGS. , As shown in FIGS. 3 and 4. That is, in FIG. 3, the center of the magnetic poles of the stator and the center of the magnetic poles of the rotor are at an electrical angle of 150 °, and in FIG. 4, they are at an electrical angle of 90 °. This Figure 3
And as can be seen in FIG.
Torque (indicated by arrow Ta) does not act.

【0017】そして、第1のトルクおよびこの第2のト
ルクは図5のようになり、モータ全体のトルクは、第1
のトルクの場合より大きくなる。従って、同じ電流値に
対してモータトルクは大きくなり駆動効率が向上するほ
か、従来の場合と同一トルクを得る場合にはモータを小
形化できる。
The first torque and the second torque are as shown in FIG. 5, and the torque of the entire motor is the first torque.
It becomes larger than the case of torque. Therefore, the motor torque is increased for the same current value, and the driving efficiency is improved. Further, when the same torque as in the conventional case is obtained, the motor can be downsized.

【0018】また、回転子1の位置検出を誘起電圧を利
用して行なうようにしたので、特別な位置検出素子が不
要で、特に、エアコンのコンプレッサモータ等のように
冷媒環境で使用されることで位置検出素子を設けること
が困難な場合に、この誘起電圧による位置検出構成は好
適する。
Further, since the position of the rotor 1 is detected by utilizing the induced voltage, no special position detecting element is required, and it can be used especially in a refrigerant environment such as a compressor motor of an air conditioner. When it is difficult to provide the position detection element in step 1, the position detection configuration based on the induced voltage is suitable.

【0019】なお、通電開始角度は各相の1周期におい
て0°以上から30°未満の範囲および180゜以上か
ら210°未満の範囲の電気角度であって、その通電角
度は、120°以上から150°未満の範囲の電気角度
であれば、所期の目的を達成できるものである。
The energization start angle is an electrical angle in the range of 0 ° to less than 30 ° and 180 ° to less than 210 ° in one cycle of each phase, and the energization angle is in the range of 120 ° or more. If the electrical angle is in the range of less than 150 °, the intended purpose can be achieved.

【0020】[0020]

【発明の効果】本発明は以上の説明から明らかなよう
に、複数相の固定子巻線を有する固定子と、N極および
S極に着磁された永久磁石を鉄心内部に交互に組み込ん
で有する回転子とを備えた永久磁石形モータを駆動する
ものにおいて、固定子巻線と回転子鉄心との間に発生す
るトルクの有効利用を図り得、これにて効率向上を図る
ことができ、またモータの小形化も可能となるといった
優れた効果を奏する。
As is apparent from the above description, the present invention is obtained by alternately incorporating stators having stator windings of a plurality of phases and permanent magnets magnetized into N poles and S poles inside an iron core. In the one for driving a permanent magnet type motor having a rotor having, it is possible to effectively utilize the torque generated between the stator winding and the rotor iron core, which can improve efficiency. Further, it has an excellent effect that the size of the motor can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す電気回路図FIG. 1 is an electric circuit diagram showing an embodiment of the present invention.

【図2】通電タイミングを示す図FIG. 2 is a diagram showing energization timing.

【図3】第2のトルクを説明するための作用説明図FIG. 3 is an operation explanatory view for explaining a second torque.

【図4】異なる回転角度位置における第2のトルクを説
明するための作用説明図
FIG. 4 is an operation explanatory view for explaining a second torque at different rotation angle positions.

【図5】各トルクを説明するための作用説明図FIG. 5 is an operation explanatory view for explaining each torque.

【図6】モータの縦断正面図FIG. 6 is a vertical sectional front view of the motor.

【図7】従来例を示す固定子巻線のスロット配置を示す
FIG. 7 is a diagram showing a slot arrangement of a stator winding showing a conventional example.

【図8】図2相当図FIG. 8 is a view corresponding to FIG.

【図9】図5相当図FIG. 9 is a view corresponding to FIG.

【図10】図3相当図FIG. 10 is a view corresponding to FIG.

【図11】図4相当図FIG. 11 is a view corresponding to FIG.

【符号の説明】[Explanation of symbols]

1は回転子、3は鉄心、4ないし7は永久磁石、8は固
定子、9は固定子鉄心、1Uないし4Wは固定子巻線、
12はスイッチング主回路、15は制御回路(位置検出
手段、通電タイミング設定手段および駆動制御手段)を
示す。
1 is a rotor, 3 is an iron core, 4 to 7 are permanent magnets, 8 is a stator, 9 is a stator iron core, 1U to 4W is a stator winding,
Reference numeral 12 is a switching main circuit, and 15 is a control circuit (position detection means, energization timing setting means and drive control means).

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 複数相の固定子巻線を有する固定子と、
N極およびS極に着磁された永久磁石を鉄心内部に交互
に組み込んで有する回転子とを備えた永久磁石形モータ
を駆動するものにおいて、 前記回転子の位置を検出する位置検出手段と、 前記固定子巻線に対する通電開始角度を、各相の1周期
において0°以上から30°未満の範囲および180゜
以上から210°未満の範囲の電気角度に設定し、且つ
その通電角度を、120°以上から150°未満の範囲
の電気角度に設定した通電タイミング設定手段と、 設定された前記通電タイミングで各相巻線に順次矩形波
電圧を印加する駆動制御手段とを具備して成る永久磁石
形モータの駆動装置。
1. A stator having stator windings of a plurality of phases,
A permanent magnet type motor having a rotor having permanent magnets magnetized to N poles and S poles alternately incorporated inside an iron core, comprising: position detecting means for detecting the position of the rotor; The energization start angle for the stator winding is set to an electrical angle in the range of 0 ° to less than 30 ° and 180 ° to less than 210 ° in one cycle of each phase, and the energization angle is set to 120 °. Permanent magnet comprising energization timing setting means set to an electrical angle in the range of 0 ° to less than 150 °, and drive control means for sequentially applying a rectangular wave voltage to each phase winding at the set energization timing. Type motor drive device.
【請求項2】 位置検出手段は、固定子巻線の誘起電圧
に基づいて回転子の位置を検出する構成となっているこ
とを特徴とする請求項1記載の永久磁石形モータの駆動
装置。
2. The drive device for a permanent magnet type motor according to claim 1, wherein the position detecting means is configured to detect the position of the rotor based on the induced voltage of the stator winding.
JP5100662A 1993-04-27 1993-04-27 Driving equipment for permanent magnet type motor Pending JPH06315293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5100662A JPH06315293A (en) 1993-04-27 1993-04-27 Driving equipment for permanent magnet type motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5100662A JPH06315293A (en) 1993-04-27 1993-04-27 Driving equipment for permanent magnet type motor

Publications (1)

Publication Number Publication Date
JPH06315293A true JPH06315293A (en) 1994-11-08

Family

ID=14280012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5100662A Pending JPH06315293A (en) 1993-04-27 1993-04-27 Driving equipment for permanent magnet type motor

Country Status (1)

Country Link
JP (1) JPH06315293A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001298982A (en) * 2000-04-17 2001-10-26 Matsushita Electric Ind Co Ltd Motor drive, and motor unit comprising it
KR100372235B1 (en) * 1998-08-12 2003-04-18 주식회사 만도 Rotor position sensor setting method of brushless motor
US6781333B2 (en) 2001-05-31 2004-08-24 Toyota Jidosha Kabushiki Kaisha Drive control apparatus and method of alternating current motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100372235B1 (en) * 1998-08-12 2003-04-18 주식회사 만도 Rotor position sensor setting method of brushless motor
JP2001298982A (en) * 2000-04-17 2001-10-26 Matsushita Electric Ind Co Ltd Motor drive, and motor unit comprising it
US6781333B2 (en) 2001-05-31 2004-08-24 Toyota Jidosha Kabushiki Kaisha Drive control apparatus and method of alternating current motor

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