JPH0294494U - - Google Patents
Info
- Publication number
- JPH0294494U JPH0294494U JP248389U JP248389U JPH0294494U JP H0294494 U JPH0294494 U JP H0294494U JP 248389 U JP248389 U JP 248389U JP 248389 U JP248389 U JP 248389U JP H0294494 U JPH0294494 U JP H0294494U
- Authority
- JP
- Japan
- Prior art keywords
- frequency command
- command
- lower limit
- frequency
- limit value
- 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
- 230000006698 induction Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
本考案における電動機発生トルクと負荷トルクの
関係を示した図、第３図は本考案における周波数
の変化の様子を示した第１図相当図、第４図は本
考案における一次周波数上下限設定回路の一実施
例を示す図、第５図は従来の制御装置の全体構成
を示す図、第６図及び第８図は従来の構成におけ
る電動機発生トルクと負荷トルクの関係を示す図
、第７図及び第９図は従来の構成における周波数
の変化の様子を示した図である。
１……コンバータ、２……インバータ、３……
誘導電動機、４……パルスエンコーダ、５……速
度指令発生器、６……パルス／速度変換器、７…
…速度調節器、８……すべり周波数設定器、ｆｒ
＊……回転周波数指令、ｆｒ……回転周波数、Ｔ
＊……トルク指令、ｆｓ＊……すべり周波数指令
、ｆｌ＊，ｆｌ＊′……一次周波数指令、ｆｂ＊
……バイアス値。
Fig. 1 is a diagram showing an embodiment of the present invention, Fig. 2 is a diagram showing the relationship between motor generated torque and load torque in the present invention, and Fig. 3 is a diagram showing how the frequency changes in the present invention. 1 is a diagram corresponding to FIG. 1, FIG. 4 is a diagram showing an embodiment of the primary frequency upper and lower limit setting circuit in the present invention, FIG. 5 is a diagram showing the overall configuration of a conventional control device, and FIG. 6 and FIG. FIGS. 7 and 9 are diagrams showing the relationship between the motor generated torque and the load torque in the configuration, and FIGS. 7 and 9 are diagrams showing changes in frequency in the conventional configuration. 1...Converter, 2...Inverter, 3...
Induction motor, 4...Pulse encoder, 5...Speed command generator, 6...Pulse/speed converter, 7...
...Speed adjuster, 8...Slip frequency setting device, fr
*...Rotation frequency command, fr...Rotation frequency, T
*...Torque command, fs*...Slip frequency command, fl*, fl*'...Primary frequency command, fb*
...Bias value.
Claims (1)
し、これをインバータで可変周波数の交流電力に
変換し、この変換された交流電力によつて誘導電
動機を駆動し、エレベータの運転を行うに際し、
回転周波数指令（速度指令）と前記誘導電動機の
回転周波数（帰還速度）との偏差に応じてすべり
周波数指令を設定し、該すべり周波数指令に前記
回転周波数を加算して一次周波数指令とし、該一
次周波数指令に追従するように速度帰還制御を行
う交流エレベータの制御装置において、 前記回転周波数指令に所定のバイアス値を加算し
た上限リミツタ値を前記一次周波数指令の上限値
とし、前記回転周波数指令から所定のバイアス値
を減算した下限リミツタ値を前記一次周波数指令
の下限値とする一次周波数上下限設定回路を備え
たことを特徴とする交流エレベータの制御装置。[Claims for Utility Model Registration] Commercial AC power is converted to DC using a converter, this is converted to variable frequency AC power using an inverter, and the converted AC power is used to drive an induction motor to drive an elevator. When driving,
A slip frequency command is set according to the deviation between the rotation frequency command (speed command) and the rotation frequency (feedback speed) of the induction motor, and the rotation frequency is added to the slip frequency command to obtain a primary frequency command. In an AC elevator control device that performs speed feedback control to follow a frequency command, an upper limiter value obtained by adding a predetermined bias value to the rotation frequency command is set as the upper limit value of the primary frequency command, and a predetermined value is determined from the rotation frequency command. A control device for an AC elevator, comprising: a primary frequency upper/lower limit setting circuit that sets a lower limit value obtained by subtracting a bias value from the lower limit value to the lower limit value of the primary frequency command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP248389U JPH0294494U (en) | 1989-01-12 | 1989-01-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP248389U JPH0294494U (en) | 1989-01-12 | 1989-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0294494U true JPH0294494U (en) | 1990-07-26 |
Family
ID=31203283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP248389U Pending JPH0294494U (en) | 1989-01-12 | 1989-01-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0294494U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006006072A (en) * | 2004-06-21 | 2006-01-05 | Toshiba Mitsubishi-Electric Industrial System Corp | Power converting device and its control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61147787A (en) * | 1984-12-19 | 1986-07-05 | Hitachi Ltd | Vector controller for induction motor |
-
1989
- 1989-01-12 JP JP248389U patent/JPH0294494U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61147787A (en) * | 1984-12-19 | 1986-07-05 | Hitachi Ltd | Vector controller for induction motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006006072A (en) * | 2004-06-21 | 2006-01-05 | Toshiba Mitsubishi-Electric Industrial System Corp | Power converting device and its control method |
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