JPH02142999U - - Google Patents
Info
- Publication number
- JPH02142999U JPH02142999U JP1989051214U JP5121489U JPH02142999U JP H02142999 U JPH02142999 U JP H02142999U JP 1989051214 U JP1989051214 U JP 1989051214U JP 5121489 U JP5121489 U JP 5121489U JP H02142999 U JPH02142999 U JP H02142999U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply device
- overexcitation
- motor
- control circuit
- 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
- 238000001514 detection method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図は本考案によるヒステリシス電動機駆動
用電源装置の一実施例を示す回路図、第２図は従
来のヒステリシス電動機駆動用電源装置の一例を
示す回路図である。
１…交流電源、２…可変電圧可変周波数インバ
ータ（ＶＶＶＦ）、３…ヒステリシス電動機（Ｈ
Ｍ）、４，５，６…開閉器、７…運転制御回路、
８…リクトル、９…コンデンサ、１０…回転数検
出器、１１…周波数検出器、１２…周波数比較器
、１３…ダイオード、１４…可変抵抗器、１５…
電圧比較器。
FIG. 1 is a circuit diagram showing an embodiment of a hysteresis motor drive power supply device according to the present invention, and FIG. 2 is a circuit diagram showing an example of a conventional hysteresis motor drive power supply device. 1... AC power supply, 2... Variable voltage variable frequency inverter (VVVF), 3... Hysteresis motor (H
M), 4, 5, 6... Switch, 7... Operation control circuit,
8...Rector, 9...Capacitor, 10...Rotation speed detector, 11...Frequency detector, 12...Frequency comparator, 13...Diode, 14...Variable resistor, 15...
voltage comparator.
Claims (1)
装置と、この電源装置の運転を所望周期に一時停
止する運転制御回路と、前記電源装置を停止して
いる間に前記電動機の逆起電圧の回転周波数と前
記電源装置の周波数を入力し、この両者がすべり
を求め、このすべりを前記運転制御回路に入力す
るすべり検出回路とからなるヒステリシス電動機
駆動用電源装置において、同期運転時に、前記電
源装置を周期ごとに一時停止させ前記電動機の逆
起電圧のレベル所定値以上であれば過励磁と判断
し、すぐ再運転せず一旦すべらせた後再運転させ
過励磁を解くように前記運転制御回路に指令を与
える過励磁検出手段を設けたことを特徴とするヒ
ステリシス電動機駆動用電源装置。 (2) 過励磁状態検出手段により過励磁を検出す
ると電源装置の一時停止させる周期を可変するこ
とにより過励磁を解くことを特徴とする請求項１
記載のヒステリシス電動機駆動用電源装置。[Claims for Utility Model Registration] (1) A power supply device for driving a hysteresis motor, an operation control circuit that temporarily stops the operation of this power supply device at a desired cycle, and a In a hysteresis motor drive power supply device, which includes a slip detection circuit that inputs the rotational frequency of the back electromotive force of the motor and the frequency of the power supply device, determines the slip between the two, and inputs this slip to the operation control circuit, synchronization is performed. During operation, the power supply device is temporarily stopped at every cycle, and if the level of the back electromotive voltage of the motor exceeds a predetermined value, it is determined to be overexcited, and instead of restarting immediately, the power supply device is allowed to slide once and then restarted to release the overexcitation. A power supply device for driving a hysteresis motor, characterized in that it is provided with overexcitation detection means for giving a command to the operation control circuit. (2) Claim 1 characterized in that when overexcitation is detected by the overexcitation state detection means, the overexcitation is released by varying the period in which the power supply device is temporarily stopped.
The power supply device for driving the hysteresis motor described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989051214U JPH02142999U (en) | 1989-04-28 | 1989-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989051214U JPH02142999U (en) | 1989-04-28 | 1989-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02142999U true JPH02142999U (en) | 1990-12-04 |
Family
ID=31570447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989051214U Pending JPH02142999U (en) | 1989-04-28 | 1989-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02142999U (en) |
-
1989
- 1989-04-28 JP JP1989051214U patent/JPH02142999U/ja active Pending
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