JPH0363097U - - Google Patents
Info
- Publication number
- JPH0363097U JPH0363097U JP12101089U JP12101089U JPH0363097U JP H0363097 U JPH0363097 U JP H0363097U JP 12101089 U JP12101089 U JP 12101089U JP 12101089 U JP12101089 U JP 12101089U JP H0363097 U JPH0363097 U JP H0363097U
- Authority
- JP
- Japan
- Prior art keywords
- power source
- arithmetic
- inverter
- control device
- commercial power
- 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 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Control Of Ac Motors In General (AREA)
Description
図は本考案の一実施例を示すもので、第１図は
インバータの制御回路図、第２図はインバータ出
力のＶ／Ｆ特性図、第３図は検出パルスの検出処
理波形説明図、第４図、第５図は周波数判別処理
のフローチヤート図である。
Ｒ．Ｓ．Ｔは３相交流電源、２……全波整流器
、５はインバータ、１９は演算制御装置、２８は
フオトオプラである。
The figures show an embodiment of the present invention, in which Fig. 1 is an inverter control circuit diagram, Fig. 2 is an inverter output V/F characteristic diagram, Fig. 3 is a detection processing waveform explanatory diagram of detection pulses, and Fig. 4 and 5 are flowcharts of frequency discrimination processing. R. S. T is a three-phase AC power supply, 2 is a full-wave rectifier, 5 is an inverter, 19 is an arithmetic and control unit, and 28 is a photoopra.
Claims (1)
算制御装置でＰＷＭ制御するインバータで誘導電
動機を制御するものにおいて、前記商用電源を検
出するフオトカプラと、該フオトカプラで検出し
たパルス出力の反転区間の時間を計数して平均化
する前記演算制御装置と、該演算制御装置で判別
した商用電源の周波数に基づいてインバータ出力
の電圧／周波数パターンの基底周波数を自動選択
するインバータの制御装置。 An induction motor is controlled by an inverter that converts a commercial power source into a DC power source and performs PWM control on the DC power source using an arithmetic control unit, which includes a photocoupler that detects the commercial power source, and an inversion section of the pulse output detected by the photocoupler. The arithmetic and control device counts and averages the time, and the inverter control device automatically selects the base frequency of the voltage/frequency pattern of the inverter output based on the frequency of the commercial power source determined by the arithmetic and control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12101089U JPH0363097U (en) | 1989-10-16 | 1989-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12101089U JPH0363097U (en) | 1989-10-16 | 1989-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0363097U true JPH0363097U (en) | 1991-06-20 |
Family
ID=31669056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12101089U Pending JPH0363097U (en) | 1989-10-16 | 1989-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0363097U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6216093A (en) * | 1985-07-12 | 1987-01-24 | Matsushita Electric Ind Co Ltd | Inverter device |
| JPS6430457A (en) * | 1987-07-22 | 1989-02-01 | Mitsubishi Electric Corp | Phase controller |
-
1989
- 1989-10-16 JP JP12101089U patent/JPH0363097U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6216093A (en) * | 1985-07-12 | 1987-01-24 | Matsushita Electric Ind Co Ltd | Inverter device |
| JPS6430457A (en) * | 1987-07-22 | 1989-02-01 | Mitsubishi Electric Corp | Phase controller |