JPS5947280U - brushless electric motor - Google Patents
brushless electric motorInfo
- Publication number
- JPS5947280U JPS5947280U JP1982143313U JP14331382U JPS5947280U JP S5947280 U JPS5947280 U JP S5947280U JP 1982143313 U JP1982143313 U JP 1982143313U JP 14331382 U JP14331382 U JP 14331382U JP S5947280 U JPS5947280 U JP S5947280U
- Authority
- JP
- Japan
- Prior art keywords
- electric motor
- brushless electric
- switching element
- semiconductor switching
- control means
- 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
- 239000004065 semiconductor Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の一実施例を示し、第１図は電気回路図、
第２図はトランジスタの斜視図、第３図ａ乃至Ｃはトラ
ンジスタのスイッチング波形図である。
図面中、１は位置検出回路、２は入力用抵抗たるサーミ
スタ（制御手段）、３はトランジスタ（半導体スイッチ
ング素子）、４は電機子コイル、６はサージ吸収用コン
デンサ、７は時定数回路を示す。The drawings show an embodiment of the present invention, and FIG. 1 is an electric circuit diagram;
FIG. 2 is a perspective view of the transistor, and FIGS. 3A to 3C are switching waveform diagrams of the transistor. In the drawing, 1 is a position detection circuit, 2 is a thermistor (control means) as an input resistor, 3 is a transistor (semiconductor switching element), 4 is an armature coil, 6 is a surge absorption capacitor, and 7 is a time constant circuit. .
Claims (1)
る入力用抵抗及びサージ吸収用コンデンサを有する半導
体スイッチング素子によって電機子コイルを通断電制御
するものにおいて、前記入力用抵抗及びサージ吸収用コ
ンデンサからなる時定数回路の時定数を前記半導体スイ
ッチング素子のスイッチング周波数に応じて変化させる
制御手段を設けるようにした無刷子電動機。 ２ 制御手段は半導体スイッチング素子のスイッチング
周波数をその半導体スイッチング素子の発熱量によって
検出するようになっていることを特徴とする実用新案登
録請求の範囲第１項に記載の無刷子電動機。 ３ 制御手段は負温度特性を有する抵抗体であって入力
用抵抗を構成していることを特徴とする実用新案登録請
求の範囲第２項に記載の無刷子電動機。[Claims for Utility Model Registration] 1. In a device in which the armature coil is controlled to be energized or disconnected by a semiconductor switching element having an input resistor and a surge absorbing capacitor to which a position detection signal corresponding to the rotational position of the rotor is applied, A brushless electric motor comprising a control means for changing a time constant of a time constant circuit including an input resistor and a surge absorption capacitor in accordance with a switching frequency of the semiconductor switching element. 2. The brushless electric motor according to claim 1, wherein the control means detects the switching frequency of the semiconductor switching element based on the amount of heat generated by the semiconductor switching element. 3. The brushless electric motor according to claim 2, wherein the control means is a resistor having negative temperature characteristics and constitutes an input resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982143313U JPS5947280U (en) | 1982-09-21 | 1982-09-21 | brushless electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982143313U JPS5947280U (en) | 1982-09-21 | 1982-09-21 | brushless electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5947280U true JPS5947280U (en) | 1984-03-29 |
| JPH0428238Y2 JPH0428238Y2 (en) | 1992-07-08 |
Family
ID=30319934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982143313U Granted JPS5947280U (en) | 1982-09-21 | 1982-09-21 | brushless electric motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5947280U (en) |
-
1982
- 1982-09-21 JP JP1982143313U patent/JPS5947280U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0428238Y2 (en) | 1992-07-08 |
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