JPS54101132A - Inverter protecting device - Google Patents
Inverter protecting deviceInfo
- Publication number
- JPS54101132A JPS54101132A JP719278A JP719278A JPS54101132A JP S54101132 A JPS54101132 A JP S54101132A JP 719278 A JP719278 A JP 719278A JP 719278 A JP719278 A JP 719278A JP S54101132 A JPS54101132 A JP S54101132A
- Authority
- JP
- Japan
- Prior art keywords
- output
- comparator
- adder
- service
- power interruption
- 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 suppress an overvoltage fully to a low level at the time of power interruption of service, by operating a detection of the power interruption of service without delay, using a waveform shaping circuit, for shaping the power source voltage into a square wave, and an adder circuit, for adding an output of said waveform shaping circuit.
CONSTITUTION: With a power interruption of service occurring, output of a transformer 20 is lost. In case of the power source being three-phase in Y-connection, output of an adder 44 becomes zero in three stages, and in delta-connection, in two stages. When the output of te adder 44 comes to be below the reference voltage, a comparator 45 makes an outputting. The output of the comparator 45 makes an integrator 47 to stat an integration, and with an integrated voltage of the integrator 47 exceeding the reference voltage 49, a comparator 48 makes an outputting, causing a pulse generator 50 to output a pulse. This pulse is fed to the rectifier, becoming a signal to construct a bypass pair circuit.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP719278A JPS54101132A (en) | 1978-01-27 | 1978-01-27 | Inverter protecting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP719278A JPS54101132A (en) | 1978-01-27 | 1978-01-27 | Inverter protecting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54101132A true JPS54101132A (en) | 1979-08-09 |
Family
ID=11659165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP719278A Pending JPS54101132A (en) | 1978-01-27 | 1978-01-27 | Inverter protecting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54101132A (en) |
-
1978
- 1978-01-27 JP JP719278A patent/JPS54101132A/en active Pending
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