JPS56166478A - Detector for magnetic flux of ac machine - Google Patents
Detector for magnetic flux of ac machineInfo
- Publication number
- JPS56166478A JPS56166478A JP16049179A JP16049179A JPS56166478A JP S56166478 A JPS56166478 A JP S56166478A JP 16049179 A JP16049179 A JP 16049179A JP 16049179 A JP16049179 A JP 16049179A JP S56166478 A JPS56166478 A JP S56166478A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- machine
- outputs
- phase
- magnetic flux
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
PURPOSE:To eliminate the beat generated in an apparatus which detects magnetic flux by means of voltage models, and perform a stable and highly accurate magnetic flux detection, by making the cut-off frequencies of high-pass filters variable dependent on the operating frequency of an AC machine. CONSTITUTION:The voltage set by both a voltage-setting device 4 and a frequency- setting device 5 is sent to an AC machine 1 from an electric-power converter 2. Transformers 6 and 7 are provided to measure the voltage supplied to the AC machine 1, and the outputs thereof are converted into two-phase outputs by means of a three-phase/two-phase converter 8 to obtain Vd and Vq. Said Vd and Vq are led to and integrated in integrating circuits 9 and 10 corresponding to voltage models. The output voltages phid and phiq of the models 9 and 10 are led to high-pass filters 11 and 12 whose cut-off frequencies change according to the set value fM of the frequency setting device 5. The outputs having passed through a phase compensator 13 are used as magnetic-flux detecting outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16049179A JPS56166478A (en) | 1979-12-11 | 1979-12-11 | Detector for magnetic flux of ac machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16049179A JPS56166478A (en) | 1979-12-11 | 1979-12-11 | Detector for magnetic flux of ac machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56166478A true JPS56166478A (en) | 1981-12-21 |
Family
ID=15716082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16049179A Pending JPS56166478A (en) | 1979-12-11 | 1979-12-11 | Detector for magnetic flux of ac machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56166478A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6268044B1 (en) | 1998-04-15 | 2001-07-31 | Societe De Conditionnement Et Industrie Societe Anonyme Ceisa | Heat-shrinkable polyethylene film of high clarity which is easy to open for the wrapping of groups of products |
-
1979
- 1979-12-11 JP JP16049179A patent/JPS56166478A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6268044B1 (en) | 1998-04-15 | 2001-07-31 | Societe De Conditionnement Et Industrie Societe Anonyme Ceisa | Heat-shrinkable polyethylene film of high clarity which is easy to open for the wrapping of groups of products |
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