GB1289632A - - Google Patents
Info
- Publication number
- GB1289632A GB1289632A GB1289632DA GB1289632A GB 1289632 A GB1289632 A GB 1289632A GB 1289632D A GB1289632D A GB 1289632DA GB 1289632 A GB1289632 A GB 1289632A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thyristors
- event
- commutating
- shoot
- jan
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1225—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to internal faults, e.g. shoot-through
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Voltage And Current In General (AREA)
- Inverter Devices (AREA)
- Power Conversion In General (AREA)
- Ac-Ac Conversion (AREA)
- Protection Of Static Devices (AREA)
Abstract
1289632 Protecting converters GENERAL ELECTRIC CO 21 Jan 1970 [28 Jan 1969] 2892/70 Heading H2F In a converter comprising at least two series pairs of alternately conductive thyristors 20, 23, 30, 33, connected across supply lines 12, 16, all said thyristors are turned on in the event of one pair becoming conductive simultaneously (shoot-through), a capacitor 17 being connected across the supply lines 12, 16 and arranged to ring with the circuit inductance so as to turn off all such thyristors in this event. The circuit shown may be arranged as a variable frequency inverter controlled by a gating circuit 53 so as to pulse-width modulate or provide adjustable time ratio of the output waveform so that the voltage fed to an induction motor 13 is proportional to frequency. Commutating thyristors 20A ... 43A and LC commutating circuits 28 ... 49 are included. In the event of shoot-through, the current in capacitor 17 increases so as to provide a signal in current transformer 60 which is supplied to detector 61 so as to turn on (at 62) all main thyristors. Detector 61 also inhibits further gating signals to the main and commutating thyristors. Inductors 21 ... 42 limit di/dt whilst an RC network (Fig. 2, not shown) limits dv/dt.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79454369A | 1969-01-28 | 1969-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1289632A true GB1289632A (en) | 1972-09-20 |
Family
ID=25162941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1289632D Expired GB1289632A (en) | 1969-01-28 | 1970-01-21 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS507735B1 (en) |
| DE (1) | DE2002943A1 (en) |
| ES (1) | ES375902A1 (en) |
| GB (1) | GB1289632A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2453248A1 (en) * | 1973-11-26 | 1975-05-28 | Asea Ab | INVERTER |
| US7308192B2 (en) | 2002-06-07 | 2007-12-11 | Trw Limited | Motor drive control with a single current sensor using space vector technique |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2242415C2 (en) * | 1972-08-29 | 1982-06-03 | Brown, Boveri & Cie Ag, 6800 Mannheim | Circuit arrangement for protecting an inverter |
| US4628395A (en) * | 1983-11-21 | 1986-12-09 | Mitsubishi Denki Kabushiki Kaisha | Overload protecting circuit for an inverter device |
| JPH0753037B2 (en) * | 1985-01-26 | 1995-06-05 | 株式会社日立製作所 | Inverter protector |
-
1970
- 1970-01-21 GB GB1289632D patent/GB1289632A/en not_active Expired
- 1970-01-23 DE DE19702002943 patent/DE2002943A1/en active Pending
- 1970-01-26 ES ES375902A patent/ES375902A1/en not_active Expired
- 1970-01-27 JP JP45006812A patent/JPS507735B1/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2453248A1 (en) * | 1973-11-26 | 1975-05-28 | Asea Ab | INVERTER |
| US7308192B2 (en) | 2002-06-07 | 2007-12-11 | Trw Limited | Motor drive control with a single current sensor using space vector technique |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS507735B1 (en) | 1975-03-28 |
| ES375902A1 (en) | 1972-04-16 |
| DE2002943A1 (en) | 1970-08-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |