JPS54105735A - Gate controller for inverter - Google Patents
Gate controller for inverterInfo
- Publication number
- JPS54105735A JPS54105735A JP1245978A JP1245978A JPS54105735A JP S54105735 A JPS54105735 A JP S54105735A JP 1245978 A JP1245978 A JP 1245978A JP 1245978 A JP1245978 A JP 1245978A JP S54105735 A JPS54105735 A JP S54105735A
- Authority
- JP
- Japan
- Prior art keywords
- output
- phase
- generating unit
- wave generating
- triangular wave
- 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
Landscapes
- Inverter Devices (AREA)
Abstract
PURPOSE: To make no distortion being caused in the output waveform even under a transient condition where the frequency changes, with a shifting of the phase eliminated, by constituting a triangular wave generating unit with a phase lock loop, having an equal dynamic characteristic to the sinusoidal wave generating unit.
CONSTITUTION: In the pulse width modulated inverter circuit, an output of the sinusoidal wave generating unit, having a phase lock loop 5 synchronized with an output of a three-phase distributor 4, and an output of the triangular wave generating unit 12, having an integer times frequency, are compared by a comparator 9 with an output voltage of sinusoidal wave shape obtained, when the triangular wave generating unit 12 is to construct the phase lock loop by such that, with output square wave of a voltage control oscillator 13 divided by a frequency divider 14, a comparison be made in a phase comparator 15 with the reference signal coming from the distributor 4. In this way, the sinusoidal wave and the triangular wave are always synchronized and compared, so making no shifting of the phase caused even for the frequency changing, thus capable of eliminating a distortion of the output waveform.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1245978A JPS54105735A (en) | 1978-02-08 | 1978-02-08 | Gate controller for inverter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1245978A JPS54105735A (en) | 1978-02-08 | 1978-02-08 | Gate controller for inverter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54105735A true JPS54105735A (en) | 1979-08-20 |
Family
ID=11805922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1245978A Pending JPS54105735A (en) | 1978-02-08 | 1978-02-08 | Gate controller for inverter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54105735A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4779183A (en) * | 1986-07-25 | 1988-10-18 | Hitachi, Ltd. | Method and apparatus for selectively controlling an operation mode of a PWM inverter between an asychronous mode and a synchronous mode modulation |
-
1978
- 1978-02-08 JP JP1245978A patent/JPS54105735A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4779183A (en) * | 1986-07-25 | 1988-10-18 | Hitachi, Ltd. | Method and apparatus for selectively controlling an operation mode of a PWM inverter between an asychronous mode and a synchronous mode modulation |
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