JPS55100075A - Sine wave inverter - Google Patents
Sine wave inverterInfo
- Publication number
- JPS55100075A JPS55100075A JP685179A JP685179A JPS55100075A JP S55100075 A JPS55100075 A JP S55100075A JP 685179 A JP685179 A JP 685179A JP 685179 A JP685179 A JP 685179A JP S55100075 A JPS55100075 A JP S55100075A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sine wave
- circuit
- detected
- 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.)
- Granted
Links
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
Landscapes
- Inverter Devices (AREA)
Abstract
PURPOSE: To compensate the time mean output of the sine wave inverter to obtain the ideal sine wave output by a method wherein the direction of the load current is detected and based on this detected signal, the crest value of the sine wave inverter is increased or decreased by the specified magnitude.
CONSTITUTION: The current of each phase of the induction motor 1 is detected by means of the current detector 15 and the positive or negative direction of the detected signal is discriminated by means of the current direction discrimination circuit. And in the next stage multiplication circuit 17, this obtained polarity signal is multiplied by a signal corresponding to the velocity command signal from the absolute value circuit 10, multiplied by a constant in the constant circuit, to form a compensation signal possessing the proper polarity and the magnitude. And then, in the addition and subtraction points, the formed signal is added or subtracted to and from the output signal of the sine wave oscillator 9 according to each phase and the obtained results are put in the next pulse length modulation circuit 13. And by means of this output of the modulation circuit 13, the sine wave inverter 4 is controlled.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54006851A JPS598152B2 (en) | 1979-01-22 | 1979-01-22 | sine wave inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54006851A JPS598152B2 (en) | 1979-01-22 | 1979-01-22 | sine wave inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55100075A true JPS55100075A (en) | 1980-07-30 |
| JPS598152B2 JPS598152B2 (en) | 1984-02-23 |
Family
ID=11649731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54006851A Expired JPS598152B2 (en) | 1979-01-22 | 1979-01-22 | sine wave inverter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS598152B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982003301A1 (en) * | 1981-03-16 | 1982-09-30 | Ishida Hiroshi | Control system for synchronous motor and device therefor |
| JPS58100486U (en) * | 1981-12-25 | 1983-07-08 | 株式会社明電舎 | Asynchronous PWM inverter |
| JPS59123478A (en) * | 1982-12-28 | 1984-07-17 | Toshiba Corp | Controller for voltage type inverter |
| JPS60139195A (en) * | 1983-12-26 | 1985-07-23 | Hitachi Ltd | Control method of pulse width modulation inverter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01129658U (en) * | 1988-02-17 | 1989-09-04 |
-
1979
- 1979-01-22 JP JP54006851A patent/JPS598152B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982003301A1 (en) * | 1981-03-16 | 1982-09-30 | Ishida Hiroshi | Control system for synchronous motor and device therefor |
| JPS58100486U (en) * | 1981-12-25 | 1983-07-08 | 株式会社明電舎 | Asynchronous PWM inverter |
| JPS59123478A (en) * | 1982-12-28 | 1984-07-17 | Toshiba Corp | Controller for voltage type inverter |
| JPS60139195A (en) * | 1983-12-26 | 1985-07-23 | Hitachi Ltd | Control method of pulse width modulation inverter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS598152B2 (en) | 1984-02-23 |
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