JPH0171999U - - Google Patents
Info
- Publication number
- JPH0171999U JPH0171999U JP1987165506U JP16550687U JPH0171999U JP H0171999 U JPH0171999 U JP H0171999U JP 1987165506 U JP1987165506 U JP 1987165506U JP 16550687 U JP16550687 U JP 16550687U JP H0171999 U JPH0171999 U JP H0171999U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- inverter
- correction signal
- induction motor
- frequency setting
- 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 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図は本考案の実施例を示したブロツク図で
あり、第２図はオープンループの周波数制御を行
うインバータの従来例を示したブロツク図である
。
２…交流電源、３…整流器、４…平滑コンデン
サ、５…ＰＷＭインバータ、６…誘導電動機、１
１…周波数設定器、１２…加減速度演算回路、１
３…Ｖ／Ｆパターン発生回路、１４…正弦発生回
路、１５…３角波発生回路、１６…コンパレータ
、１７…ベース駆動回路、２１…電流検出器、２
２…整流回路、２３…フイルタ回路、２４…補正
信号発生回路、２５…加算回路。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example of an inverter that performs open-loop frequency control. 2... AC power supply, 3... Rectifier, 4... Smoothing capacitor, 5... PWM inverter, 6... Induction motor, 1
1... Frequency setter, 12... Acceleration/deceleration calculation circuit, 1
3... V/F pattern generation circuit, 14... Sine generation circuit, 15... Triangular wave generation circuit, 16... Comparator, 17... Base drive circuit, 21... Current detector, 2
2... Rectifier circuit, 23... Filter circuit, 24... Correction signal generation circuit, 25... Adder circuit.
Claims (1)
力するインバータに誘導電動機を接続し、この誘
導電動機の速度をオープンループで制御している
インバータにおいて、前記インバータの出力電流
を検出する手段と、この検出電流値に対応した周
波数補正信号を出力する補正信号発生手段と、前
記周波数設定器が出力する周波数設定信号に、こ
の周波数補正信号を加算する手段とを備えている
ことを特徴とする、電動機駆動用インバータの周
波数制御装置。 In an inverter in which an induction motor is connected to an inverter that outputs alternating current power at a frequency set by a frequency setting device, and the speed of the induction motor is controlled in an open loop, means for detecting an output current of the inverter; A motor drive comprising: correction signal generating means for outputting a frequency correction signal corresponding to a current value; and means for adding this frequency correction signal to a frequency setting signal outputted by the frequency setting device. frequency control device for inverters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987165506U JPH0171999U (en) | 1987-10-29 | 1987-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987165506U JPH0171999U (en) | 1987-10-29 | 1987-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0171999U true JPH0171999U (en) | 1989-05-15 |
Family
ID=31452053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987165506U Pending JPH0171999U (en) | 1987-10-29 | 1987-10-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0171999U (en) |
-
1987
- 1987-10-29 JP JP1987165506U patent/JPH0171999U/ja active Pending
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