JPS63105500U - - Google Patents
Info
- Publication number
- JPS63105500U JPS63105500U JP19718586U JP19718586U JPS63105500U JP S63105500 U JPS63105500 U JP S63105500U JP 19718586 U JP19718586 U JP 19718586U JP 19718586 U JP19718586 U JP 19718586U JP S63105500 U JPS63105500 U JP S63105500U
- Authority
- JP
- Japan
- Prior art keywords
- inverter
- speed
- deceleration
- acceleration
- frequency
- 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
- 230000001133 acceleration Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000006698 induction Effects 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す回路図である。
２……交流電源、３……整流器、４……平滑コ
ンデンサ、５……ＶＶＶＦインバータ、６……誘
導電動機、１１……速度設定器、１２……加減速
度演算器、１３……電圧・周波数変換器、１４…
…関数発生器、１５……パルス幅変調回路、１６
……ベース駆動回路、２１……停電検出回路、２
１Ａ……接点、２２……電流検出器、２３……電
流方向判別回路。
FIG. 1 is a circuit diagram showing an embodiment of the present invention. 2... AC power supply, 3... Rectifier, 4... Smoothing capacitor, 5... VVVF inverter, 6... Induction motor, 11... Speed setter, 12... Acceleration/deceleration calculator, 13... Voltage/frequency Converter, 14...
...Function generator, 15...Pulse width modulation circuit, 16
... Base drive circuit, 21 ... Power failure detection circuit, 2
1A...Contact, 22...Current detector, 23...Current direction determination circuit.
Claims (1)
さで変化する速度指令信号に変換する加減速度演
算器を備え、電源からの直流をこの速度指令信号
に対応した電圧と周波数の交流に交換して交流電
動機を上記の設定速度で駆動する電動機駆動用イ
ンバータにおいて、前記電源が停電したことを検
出して前記加減速度演算器へ速度零信号を入力さ
せる手段と、前記インバータの直流側を流れる電
流の方向を判別する手段と、停電が復旧したとき
の上記直流側電流の方向に対応して当該インバー
タが出力する交流の周波数を変更させる手段とを
備えていることを特徴とする電動機駆動用インバ
ータの制御装置。 (2) 実用新案登録請求の範囲第１項記載の制御
装置において、前記加減速度演算器の減速度特性
は、前記交流電動機が自由回転で減速するときの
減速度特性に近似していることを特徴とする電動
機駆動用インバータの制御装置。[Claims for Utility Model Registration] (1) An acceleration/deceleration calculator that converts a speed setting signal from a speed setting device into a speed command signal that changes at a predetermined speed, and converts direct current from a power supply into this speed command signal. In a motor drive inverter that drives an AC motor at the set speed by changing the AC voltage and frequency to AC of a corresponding voltage and frequency, means for detecting a power outage of the power source and inputting a zero speed signal to the acceleration/deceleration calculator. and means for determining the direction of the current flowing through the DC side of the inverter, and means for changing the frequency of the AC output from the inverter in response to the direction of the DC side current when the power outage is restored. A control device for an inverter for driving an electric motor, characterized in that: (2) Utility model registration In the control device according to claim 1, the deceleration characteristic of the acceleration/deceleration calculator is approximate to the deceleration characteristic when the AC motor decelerates in free rotation. A control device for an inverter for driving an electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19718586U JPS63105500U (en) | 1986-12-22 | 1986-12-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19718586U JPS63105500U (en) | 1986-12-22 | 1986-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63105500U true JPS63105500U (en) | 1988-07-08 |
Family
ID=31156678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19718586U Pending JPS63105500U (en) | 1986-12-22 | 1986-12-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63105500U (en) |
-
1986
- 1986-12-22 JP JP19718586U patent/JPS63105500U/ja active Pending
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