JPH0336989A - Protective device for permanent magnet type synchronous motor - Google Patents
Protective device for permanent magnet type synchronous motorInfo
- Publication number
- JPH0336989A JPH0336989A JP1166707A JP16670789A JPH0336989A JP H0336989 A JPH0336989 A JP H0336989A JP 1166707 A JP1166707 A JP 1166707A JP 16670789 A JP16670789 A JP 16670789A JP H0336989 A JPH0336989 A JP H0336989A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- temperature
- magnet
- synchronous motor
- type synchronous
- 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
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 7
- 230000001681 protective effect Effects 0.000 title 1
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は永久磁石式同期電動機に係り、特に同電動機の
温度保護に好適な装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a permanent magnet type synchronous motor, and particularly to a device suitable for temperature protection of the motor.
従来の装置は、特願昭８３−２５７１６４号に記載のよ
うに、保護回路は設けられていない構造であった。The conventional device had a structure in which no protection circuit was provided, as described in Japanese Patent Application No. 83-257164.
上記従来技術は電動機の温度保護の点について配慮され
ておらず、高頻度で起動停止のくり返し動作を行ったと
き電動機温度上昇が上がり温度保護上の問題があった。The above-mentioned conventional technology does not take temperature protection of the motor into consideration, and when the motor is repeatedly started and stopped frequently, the temperature of the motor rises, posing a problem in terms of temperature protection.
本発明は電動機が異常温度になったとき、温度保護を効
率良く行うことを目的としている。An object of the present invention is to efficiently perform temperature protection when an electric motor reaches an abnormal temperature.
上記目的を達成するために、電動機固定子巻線近くに温
度検知スイッチを配し、前記温度検知スイッチによって
磁極位置検知信号線を開閉する様にすることにより、も
し前記信号線が開状態となったとき、制御回路内に磁極
位置信号組合せ異常となる回路を設けることにより達成
される。In order to achieve the above object, a temperature detection switch is arranged near the motor stator winding, and the temperature detection switch opens and closes the magnetic pole position detection signal line. This can be achieved by providing a circuit in the control circuit that causes an abnormal combination of magnetic pole position signals when the combination occurs.
固定子巻線が異常温度に達したとき温度検知スイッチが
開状態となる、前記スイッチは磁極位置検知信号線に配
しであるため、前記信号線を切ることにより信号レベル
は、′Ｌ”状態のままとなり磁極位置信号の組合せが異
常となったとき、制御機マイコンによって、前記信号を
検知して、固定子巻線への通電を停止するので、誤動作
することがない。When the stator winding reaches an abnormal temperature, the temperature detection switch opens. Since the switch is connected to the magnetic pole position detection signal line, cutting the signal line changes the signal level to 'L' state. When the combination of magnetic pole position signals becomes abnormal, the controller microcomputer detects the signals and stops energizing the stator windings, thereby preventing malfunctions.
以下、本発明の一実施例を第工図〜第５図に９り説明す
る。第１図に永久磁石式同期電動機の１！転子を第２図
にＡ−Ａ部を示す、モードル軸１０５に回転子コア１０
３を挿入し、永久磁石１０１４機械的に固定し、他方該
モードル軸１０５には本山磁石１０４を装着し、永久磁
石工０２と検出磁石（０４は同磁極に着磁する。また検
出磁石１０４に対して、磁極センサー２を配置する。ｌ
ｄ転方Ｖ位置関係は第２図にボす、第３図は全システム
ズら見た温度検知スイッチ１０６の取付位置を承１本発
明によれば、永久磁石式同期電動機１温度ｉ異常に上昇
したとき、温度検知スイッチが開状充となり、磁極位置
検出信号線が切れることにな（“Ｌ ｕ状態となって位
置、速度制御＠路内のマづコンによって磁極位置検出信
号異常組合せと判御し回転停止させる。An embodiment of the present invention will be described below with reference to FIGS. Figure 1 shows 1! of a permanent magnet type synchronous motor! The rotor core 10 is attached to the model shaft 105, with the trochanter shown in section A-A in FIG.
3 and mechanically fix the permanent magnet 1014. On the other hand, the Motoyama magnet 104 is attached to the model shaft 105, and the permanent magnet 02 and the detection magnet (04 are magnetized to the same magnetic pole. In contrast, a magnetic pole sensor 2 is arranged.l
Figure 2 shows the positional relationship between d and V, and Figure 3 shows the mounting position of the temperature detection switch 106 from the perspective of all systems. When this happens, the temperature detection switch becomes open and the magnetic pole position detection signal line is cut off. Control to stop rotation.
〔発明の効果〕
本発明によれば２温度検知スイッチは論理電源ライン上
に設けであるので非常に低容量化できろ[Effects of the Invention] According to the present invention, since the two temperature detection switches are provided on the logic power supply line, the capacitance can be extremely reduced.
第工図は本発明の一実施例による永久磁石式同期電動機
四転子と磁極センサーの関係図、第２図は第工図のＡ−
Ａ線部を示す図、第３図は制御ブロック図、第４図は正
常時磁極センサー信号出力図、第５図は温度検知スイッ
チ動作時信号出力図を示す。The second construction drawing is a diagram of the relationship between the four rotors of a permanent magnet synchronous motor and the magnetic pole sensor according to an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between A-
3 is a control block diagram, FIG. 4 is a normal magnetic pole sensor signal output diagram, and FIG. 5 is a signal output diagram when the temperature detection switch is in operation.
Claims (1)
を行う永久磁石式同期電動機において、該回転子の磁極
検出のための複数個の検出素子の信号線上に前記電動機
の固定子巻線近くに配した温度検知スイッチを設けたこ
とを特徴とする永久磁石式同期電動機の保護装置。1. In a permanent magnet type synchronous motor that performs PWM energization control to the stator based on the magnetic pole position of the rotor, there is a wire near the stator winding of the motor on the signal line of a plurality of detection elements for detecting the magnetic pole of the rotor. A protection device for a permanent magnet type synchronous motor, characterized by being equipped with a temperature detection switch arranged at the top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1166707A JPH0336989A (en) | 1989-06-30 | 1989-06-30 | Protective device for permanent magnet type synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1166707A JPH0336989A (en) | 1989-06-30 | 1989-06-30 | Protective device for permanent magnet type synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0336989A true JPH0336989A (en) | 1991-02-18 |
Family
ID=15836270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1166707A Pending JPH0336989A (en) | 1989-06-30 | 1989-06-30 | Protective device for permanent magnet type synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0336989A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09100870A (en) * | 1995-10-02 | 1997-04-15 | Kongo Kk | Base isolation device |
| JP2006246558A (en) * | 2005-02-28 | 2006-09-14 | Melco Technorex Co Ltd | Brushless motor drive circuit |
-
1989
- 1989-06-30 JP JP1166707A patent/JPH0336989A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09100870A (en) * | 1995-10-02 | 1997-04-15 | Kongo Kk | Base isolation device |
| JP2006246558A (en) * | 2005-02-28 | 2006-09-14 | Melco Technorex Co Ltd | Brushless motor drive circuit |
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