JPH01116598U - - Google Patents
Info
- Publication number
- JPH01116598U JPH01116598U JP1988009125U JP912588U JPH01116598U JP H01116598 U JPH01116598 U JP H01116598U JP 1988009125 U JP1988009125 U JP 1988009125U JP 912588 U JP912588 U JP 912588U JP H01116598 U JPH01116598 U JP H01116598U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- load factor
- value
- storage
- motor
- 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
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図はこの考案の実施例を示すブロツク回路
図、第２図は第１図に対応する接続回路図、第３
図は負荷率演算フローチヤートである。
１……交流電源、２……インバータ、２ａ……
３相整流ブリツジ、２ｂ……トランジスタ式逆変
換回路、２ｃ……平滑コンデンサ、３……誘導電
動機、４……出力電流値検出回路、４ａ……電流
検出回路、４ｂ……３相全波ダイオードブリツジ
、４ｃ……平滑回路、５……Ａ／Ｄ変換回路、６
……定格電流値記憶回路、７……負荷率演算回路
、８……表示回路、１１……電流読取り段、１２
……実効値換算段、１３……負荷率演算段、１４
……表示段。
Fig. 1 is a block circuit diagram showing an embodiment of this invention, Fig. 2 is a connection circuit diagram corresponding to Fig. 1, and Fig. 3 is a block circuit diagram showing an embodiment of this invention.
The figure is a load factor calculation flowchart. 1... AC power supply, 2... Inverter, 2a...
3-phase rectifier bridge, 2b...Transistor type inverse conversion circuit, 2c...Smoothing capacitor, 3...Induction motor, 4...Output current value detection circuit, 4a...Current detection circuit, 4b...3-phase full-wave diode Bridge, 4c...Smoothing circuit, 5...A/D conversion circuit, 6
... Rated current value storage circuit, 7 ... Load factor calculation circuit, 8 ... Display circuit, 11 ... Current reading stage, 12
... Effective value conversion stage, 13 ... Load factor calculation stage, 14
...display stage.
Claims (1)
おいて、該装置の出力電流値検出回路と、前記電
動機の定格電流値記憶回路と、前記検出回路の出
力電流検出値と前記記憶回路の定格電流記憶値と
の比より前記電動機の負荷率を演算する負荷率演
算回路と、該演算負荷率の表示回路とを備えたこ
とを特徴とするインバータ装置。 An inverter device that drives an induction motor at variable speed, an output current value detection circuit of the device, a rated current value storage circuit of the motor, and an output current detection value of the detection circuit and a rated current storage value of the storage circuit. An inverter device comprising: a load factor calculation circuit that calculates a load factor of the electric motor from a ratio; and a display circuit for the calculated load factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988009125U JPH01116598U (en) | 1988-01-27 | 1988-01-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988009125U JPH01116598U (en) | 1988-01-27 | 1988-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01116598U true JPH01116598U (en) | 1989-08-07 |
Family
ID=31215601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988009125U Pending JPH01116598U (en) | 1988-01-27 | 1988-01-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01116598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014007855A (en) * | 2012-06-25 | 2014-01-16 | Disco Abrasive Syst Ltd | Driving method for brushless dc motor |
-
1988
- 1988-01-27 JP JP1988009125U patent/JPH01116598U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014007855A (en) * | 2012-06-25 | 2014-01-16 | Disco Abrasive Syst Ltd | Driving method for brushless dc motor |
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