JPS54134327A - Suppressing overcurrent in inverter device - Google Patents
Suppressing overcurrent in inverter deviceInfo
- Publication number
- JPS54134327A JPS54134327A JP4100178A JP4100178A JPS54134327A JP S54134327 A JPS54134327 A JP S54134327A JP 4100178 A JP4100178 A JP 4100178A JP 4100178 A JP4100178 A JP 4100178A JP S54134327 A JPS54134327 A JP S54134327A
- Authority
- JP
- Japan
- Prior art keywords
- overcurrent
- turned
- commutation failure
- inverter unit
- power inverter
- 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
Landscapes
- Protection Of Static Devices (AREA)
- Inverter Devices (AREA)
Abstract
PURPOSE: To make a reduction widely capable of the durable capacity of overcurrent, by rapidly making the the inverter output voltage to a level of zero in a method of forcibly causing a commutation failure in the inverter, in case of detecting an overcurrent.
CONSTITUTION: When the load current goes up to a level of approximately 150% of the rated current, the detection is operated firstly with an auxiliary thyristor S1 turned on in a chopper circuit CH. This causes a main thyristor S3 to be turned off. With the main thyristor S3 turned off, a voltage, applied to a power inverter unit IV from the chopper circuit CH, becomes instantaneously zero, and so the input power source is disconnected to the power inverter unit IV, causing a commutation failure. At this time, a charged electricity and overcurrent in the smoothing condenser C2 are made to flow through in a phase of the power inverter unit where the commutation failure is caused.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53041001A JPS5854752B2 (en) | 1978-04-07 | 1978-04-07 | Overcurrent suppression method for inverter equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53041001A JPS5854752B2 (en) | 1978-04-07 | 1978-04-07 | Overcurrent suppression method for inverter equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54134327A true JPS54134327A (en) | 1979-10-18 |
JPS5854752B2 JPS5854752B2 (en) | 1983-12-06 |
Family
ID=12596160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53041001A Expired JPS5854752B2 (en) | 1978-04-07 | 1978-04-07 | Overcurrent suppression method for inverter equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5854752B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5791693A (en) * | 1980-11-26 | 1982-06-07 | Meidensha Electric Mfg Co Ltd | Drive controlling method for synchronous motor |
-
1978
- 1978-04-07 JP JP53041001A patent/JPS5854752B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5791693A (en) * | 1980-11-26 | 1982-06-07 | Meidensha Electric Mfg Co Ltd | Drive controlling method for synchronous motor |
Also Published As
Publication number | Publication date |
---|---|
JPS5854752B2 (en) | 1983-12-06 |
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