JPS62182091U - - Google Patents
Info
- Publication number
- JPS62182091U JPS62182091U JP6782986U JP6782986U JPS62182091U JP S62182091 U JPS62182091 U JP S62182091U JP 6782986 U JP6782986 U JP 6782986U JP 6782986 U JP6782986 U JP 6782986U JP S62182091 U JPS62182091 U JP S62182091U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- variable frequency
- variable
- frequency device
- output signal
- 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
- 230000001172 regenerating effect Effects 0.000 claims 4
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
- Stopping Of Electric Motors (AREA)
Description
第１図はこの考案の一実施例による可変電圧可
変周波数装置の制御装置を示すブロツク図、第２
図は第１図に示す制御装置を示すブロツク図、第
３図ａは従来の第１図に示す電流検出器の特性図
、第３図ｂは第１図に示す電圧周波数変換器の出
力を示す波形図、第４図は従来の可変電圧可変周
波数装置の制御装置を示すブロツク図、第５図は
第４図に示す電圧検出回路の回路図である。
図において、９はベース駆動回路、１３は電流
検出器、１４は電圧周波数変換器、１５は極性判
定回路である。なお、図中同一符号は同一、又は
相当部分を示す。
FIG. 1 is a block diagram showing a control device for a variable voltage variable frequency device according to an embodiment of this invention, and FIG.
The figure is a block diagram showing the control device shown in Fig. 1, Fig. 3a is a characteristic diagram of the conventional current detector shown in Fig. 1, and Fig. 3b is the output of the voltage frequency converter shown in Fig. 1. 4 is a block diagram showing a conventional control device for a variable voltage variable frequency device, and FIG. 5 is a circuit diagram of the voltage detection circuit shown in FIG. 4. In the figure, 9 is a base drive circuit, 13 is a current detector, 14 is a voltage frequency converter, and 15 is a polarity determination circuit. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
圧可変周波数の駆動電力に変換して上記駆動電圧
を回生可能に電動機へ供給する可変電圧可変周波
数装置に接続され、上記電動機の回生時に上記可
変電圧可変周波数装置の回生運転を制御する可変
電圧可変周波数装置の制御装置において、上記直
流電力における直流電流のレベルに対応した電圧
信号を発生する電流検出器と、この電流検出器の
出力信号が回生運転にあることを示したときにの
み上記出力信号を導出する極性判定回路と、この
極性判定回路の出力信号のレベルに対応したパル
ス幅を有し、上記可変電圧可変周波数装置に回生
運転をさせるためのパルス信号を発生する電圧周
波数変換器とを備えた可変電圧可変周波数装置の
制御装置。 (2) 上記電流検出器はホール素子を備えている
ことを特徴とする実用新案登録請求の範囲第１項
記載の可変電圧可変周波数装置の制御装置。 (3) 上記極性判定回路は入力と接地との間に接
続されたダイオードからなることを特徴とする実
用新案登録請求の範囲第１項ないし第２項記載の
可変電圧可変周波数装置の制御装置。[Claims for Utility Model Registration] (1) Connected to a variable voltage variable frequency device that converts AC voltage to DC power, further converts it to variable voltage variable frequency drive power, and supplies the drive voltage to an electric motor in a regenerative manner. and a control device for a variable voltage variable frequency device that controls regenerative operation of the variable voltage variable frequency device during regeneration of the electric motor, a current detector that generates a voltage signal corresponding to a level of direct current in the direct current power; It has a polarity determination circuit that derives the output signal only when the output signal of this current detector indicates that it is in regenerative operation, and a pulse width that corresponds to the level of the output signal of this polarity determination circuit, and has a pulse width that corresponds to the level of the output signal of this polarity determination circuit. A control device for a variable voltage variable frequency device, comprising a voltage frequency converter that generates a pulse signal for causing the voltage variable frequency device to perform regenerative operation. (2) The control device for a variable voltage variable frequency device according to claim 1, wherein the current detector includes a Hall element. (3) The control device for a variable voltage variable frequency device according to claims 1 or 2, wherein the polarity determining circuit comprises a diode connected between an input and ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6782986U JPS62182091U (en) | 1986-05-06 | 1986-05-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6782986U JPS62182091U (en) | 1986-05-06 | 1986-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62182091U true JPS62182091U (en) | 1987-11-18 |
Family
ID=30907086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6782986U Pending JPS62182091U (en) | 1986-05-06 | 1986-05-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62182091U (en) |
-
1986
- 1986-05-06 JP JP6782986U patent/JPS62182091U/ja active Pending