JPS576590A - Controller for alternating current motor - Google Patents
Controller for alternating current motorInfo
- Publication number
- JPS576590A JPS576590A JP7766380A JP7766380A JPS576590A JP S576590 A JPS576590 A JP S576590A JP 7766380 A JP7766380 A JP 7766380A JP 7766380 A JP7766380 A JP 7766380A JP S576590 A JPS576590 A JP S576590A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- signals
- inverter
- frequency
- output
- 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
- 230000003321 amplification Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE:To eliminate the need for a revolution number detector and a switch for a motor circuit by a method wherein a power source is stopped temporarily, and the number of revolution of the motor is detected from the counterelectromotive voltage frequency of the motor at that time. CONSTITUTION:The output of the DC power source 1 is converted into AC by means of an inverter 2 to drive the AC motor 3. On the other hand, output oscillated 4-2 by means of a frequency setter 4-1 of an inverter control circuit 4 is distributed to the constituting elements of the inverter 2 by means of a ring counter 4-3 through an amplification drive circuit 4-4. Signals a-1 which halt the functioning of the ring counter 4-3 and stop the output of the inverter 2 and signals a-2 for starting a frequency counter 5-1 are outputted at every fixed period from a timing circuit 5-2 of a frequency detecting circuit 5. The signals a-1 are controlled so that they are outputted earlier than the signals a-2 and stopped later than the stoppage of the signals a-2. The counterelectromotive voltage of the motor 3 at the time when the output of the inverter 2 is stopped is detected by means of a transformer 5-3, and inputted to the frequency counter 5-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7766380A JPS576590A (en) | 1980-06-11 | 1980-06-11 | Controller for alternating current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7766380A JPS576590A (en) | 1980-06-11 | 1980-06-11 | Controller for alternating current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS576590A true JPS576590A (en) | 1982-01-13 |
Family
ID=13640108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7766380A Pending JPS576590A (en) | 1980-06-11 | 1980-06-11 | Controller for alternating current motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS576590A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991009463A1 (en) * | 1989-12-15 | 1991-06-27 | Anritsu Corporation | Inverter-controlled apparatus for carrying and measuring articles |
| US5102717A (en) * | 1989-07-21 | 1992-04-07 | Imperial Chemical Industries Plc | Inkable sheet |
-
1980
- 1980-06-11 JP JP7766380A patent/JPS576590A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5102717A (en) * | 1989-07-21 | 1992-04-07 | Imperial Chemical Industries Plc | Inkable sheet |
| WO1991009463A1 (en) * | 1989-12-15 | 1991-06-27 | Anritsu Corporation | Inverter-controlled apparatus for carrying and measuring articles |
| US5359154A (en) * | 1989-12-15 | 1994-10-25 | Anritsu Corporation | Conveyor apparatus having plural conveyors with equalized conveying speeds controlled by an inverter means |
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