JPS56110405A - Controlling method of phase difference for inverter - Google Patents
Controlling method of phase difference for inverterInfo
- Publication number
- JPS56110405A JPS56110405A JP943580A JP943580A JPS56110405A JP S56110405 A JPS56110405 A JP S56110405A JP 943580 A JP943580 A JP 943580A JP 943580 A JP943580 A JP 943580A JP S56110405 A JPS56110405 A JP S56110405A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- chopping
- phase signal
- outputs
- phase
- 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
Abstract
PURPOSE: To reduce the higher harmonic ingredient corresponding to the chopping frequency contained in an inverter input current by a method wherein the inverter is operated with a phase difference between chopping frequencies.
CONSTITUTION: A three-phase signal generator 5 inputs the output 102 sent from a frequency divider 2 and outputs a three-phase signal 105. A delta wave generator 4 inputs a synchronizing signal 103 sent from a selector 3 and outputs a delta wave signal 104. A pulse width modulator 8a outputs a chopper signal 108a with which a chopping is performed for the three-phase signal 105 in proportion to the relations of the large and small sizes between the delta wave signal 104 and the inverter output voltage command signal Vref1. The three-phase signal generator 9 outputs the three-phase signal 109 with the delayed time corresponding to a half cycle of the synchronizing signal 103 than the three-phase signal 105 in accordance with the output signal 110 of a delay circuit 10. The chopping is given to the three-phase signal 109 in accordance with the chopping signal 108b outputted from the pulse width modulator 8b.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP943580A JPS56110405A (en) | 1980-01-31 | 1980-01-31 | Controlling method of phase difference for inverter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP943580A JPS56110405A (en) | 1980-01-31 | 1980-01-31 | Controlling method of phase difference for inverter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56110405A true JPS56110405A (en) | 1981-09-01 |
Family
ID=11720236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP943580A Pending JPS56110405A (en) | 1980-01-31 | 1980-01-31 | Controlling method of phase difference for inverter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56110405A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5882969A (en) * | 1981-11-13 | 1983-05-18 | 株式会社日立製作所 | Controller for elevator juxtaposed |
JPS59204469A (en) * | 1983-04-30 | 1984-11-19 | Shinano Denki Kk | Inverter device |
-
1980
- 1980-01-31 JP JP943580A patent/JPS56110405A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5882969A (en) * | 1981-11-13 | 1983-05-18 | 株式会社日立製作所 | Controller for elevator juxtaposed |
JPS59204469A (en) * | 1983-04-30 | 1984-11-19 | Shinano Denki Kk | Inverter device |
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