EP0641482A1 - Anordnung zur erzeugung der zündspannung für thyristoren. - Google Patents
Anordnung zur erzeugung der zündspannung für thyristoren.Info
- Publication number
- EP0641482A1 EP0641482A1 EP93909651A EP93909651A EP0641482A1 EP 0641482 A1 EP0641482 A1 EP 0641482A1 EP 93909651 A EP93909651 A EP 93909651A EP 93909651 A EP93909651 A EP 93909651A EP 0641482 A1 EP0641482 A1 EP 0641482A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thyristors
- rotor
- pulse generator
- ignition
- contacts
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/541—Contacts shunted by semiconductor devices
- H01H9/542—Contacts shunted by static switch means
Definitions
- the invention relates to an arrangement for generating the ignition voltage for thyristors, preferably for a load changeover switch equipped with thyristors, the thyristors being arranged antiparallel and arranged parallel to the switch contacts or the permanent contacts of the load changeover switch, and a pulse generator being arranged in the tub is, and wherein a trigger rotor designed as a magnet is rotatably arranged in the air gap of the pulse generator on an axis mounted normally to the direction of flow of the magnetic field and the coils of the pulse generator are designed as ignition coils.
- Circuit arrangements are known, for example in the case of load changeover switches for step transformers, in which the ignition voltage, for the thyristors in parallel with the switching contacts, is taken from transformer taps.
- Another known type of ignition voltage generation is based on the use of an external voltage source.
- DE-AS 1 810 541 is concerned with an arrangement for load switching in step transformers by means of anti-parallel connected thyristors in two circuits, each of which lies between a tap of the step transformer and the common derivative. It is proposed to control the anti-parallel switched thyristors, for example via a pulse amplifier.
- This consists of pulse transformers, the primary windings of which are connected together in a circuit with transistor cascades. The circuit is powered by an external voltage source.
- the disadvantage of the ignition voltage generation described in DE-AS 1 810 541 is its dependence on the external voltage source. If the external voltage source is interrupted, the thyristors are not fired.
- DE-AS 1 297 220 describes an arrangement of tap changers for transformers for uninterrupted switchover under load when mechanical switches and controllable electric valves are used.
- the generation of the ignition pulses for the valves in an inductive way is proposed.
- the diverter switch is coupled via a drive rod with a permanent magnet, which is located within a yoke. Coils are accommodated in recesses of the yoke, in which an ignition pulse is generated when the magnet passes by changing the flux.
- An arrangement for generating ignition voltage is also known from DE-AS 1 260 612.
- a pulse generator operating without an external power source is provided, the permanent magnetic rotor of which is mechanically coupled to a main switch and the stator windings emit ignition pulses for controllable valves via rectifiers.
- the object of the invention is to provide an arrangement for problem-free generation of ignition voltage which, on the one hand, avoids the disadvantages of the known systems and, on the other hand, ensures great operational reliability.
- a spring-loaded drive actuating the switching contact or permanent contact is connected to the trigger rotor via a transfer device, with rotation of the trigger rotor, preferably in the direction of the position for, before each opening movement of the switching contacts or permanent contacts maximum magnetization, begins and continues without interruption through approximately the same angle, preferably 90 "or 180", via the position of the maximum magnetization.
- An embodiment of the invention provides that the transfer device is designed as a cam, the shaft of the spring-loaded drive being rigidly connected in the axial direction to the axis of the centrally mounted cam, that the rotation of the cam can be transmitted to an auxiliary shaft by means of a crankshaft, wherein the camshaft of a crank arm slides in a groove of the cam disc, and that a larger spur gear rigidly mounted on the auxiliary shaft meshes with a smaller spur gear, the smaller spur gear being rigidly mounted on the trigger rotor axis of the pulse generator.
- the conversion device ensures an exact temporal interaction of the movement of the switching contacts and the permanent contacts and the rotor rotation of the pulse generator.
- the rotary movement of the trigger rotor can be adjusted precisely to the respectively required operating conditions by appropriate selection of the spur gear sizes.
- FIG. 1 The basic mode of operation of the invention is shown in FIG. 1 in the form of a greatly simplified basic circuit diagram.
- FIG. 2 shows a concrete embodiment of the invention in section, while in FIG. 3 a top view of a slot washer typical of the transfer device according to the invention is shown.
- the pulse generator 22 in FIG. 1 has a magnetic circuit made from a high-quality iron core 1 with yoke legs 18, 19.
- the stator winding in the form of two ignition coils 2a, 2b is applied to the poles 6a, 6b arranged opposite one another in the center.
- a rotor 4 - in the present case permanently magnetic - is rotatably mounted on a first shaft 12 in a centric manner.
- the first shaft 12 is arranged normal to the direction of flow of the magnetic field in the air gap 13.
- a transfer device 7 connects the rotor shaft 12 to the spring-loaded drive 5, which also operates the switch contacts or permanent contacts 8.
- a pair of thyristors 10, 11 connected in antiparallel is connected in parallel with the switch contacts or permanent contacts 8. If the spring-loaded drive 5 begins to open the switching contacts and the permanent contacts 8, the spring-loaded drive 5 also actuates the transfer device 7.
- the rotor shaft 12 and thus the rotor 4 of the pulse generator 22 are set in rotation via this conversion device 7, which is only symbolically indicated in FIG. 1.
- the critical phase of a switchover is the point in time at which the load current is commutated from contact 8 to thyristors 10, 11. In this case, the thyristors 10, 11 must be activated before the contact 8 opens. This advance in time is ensured by a corresponding design of the transfer device (described in more detail in the explanation of FIG. 2).
- the rotor 4 moving in the air gap 13 causes a change in the magnetic induction in the magnetic circuit and thereby the generation of a voltage pulse in the ignition coils 2a, 2b.
- thyristors 10, 11 which causes them to ignite, and thus to switch from the blocked to the conductive switching state and initiate the commutation of the load current from the contact 8 to the thyristors 10, 11.
- the magnetic field can also be built up by means of an electromagnetic rotor.
- a permanent magnetic rotor avoids a mechanically sensitive slip ring arrangement and the need to provide an external voltage source.
- FIG. 2 shows a complete transfer device which is inserted centrally in a tub of a diverter switch. Device 7 and the pulse generator 22 also located in the tub.
- a connecting shaft 87 provides the connection between a - not shown in the drawing
- the drive tube 55 is rigidly connected by means of a clutch disk 56 to a cam disk 57 which is seated centrally on a flange shaft 9.
- the bearings for the flange shaft 9 are inserted in an upper insulating plate 32 and a lower insulating plate 31.
- the pulse generator 22 is also arranged in the area between the upper and lower insulating plates 32, 31.
- the magnetic circuit 36 sits between the upper insulating plate 32 and an intermediate plate 38 arranged above the lower insulating plate 31.
- the rotor 4 which is arranged centrally within the magnetic circuit 36 or a coil 2, is designed as a permanent magnet.
- a cam shaft 101 runs in a groove 39 running along the underside of the cam disk 57 and is connected via a clamping lever 35 to the upper end of an auxiliary shaft 44 arranged parallel to the rotor 4.
- a larger spur gear segment 43 is placed on the auxiliary shaft 44 on the opposite side, below the lower insulating plate 31. This spur gear segment 43 is in engagement with a small spur gear 42, which is applied to the rotor axis of the pulse generator 22.
- the cam disk 57 shown in FIG. 3 and fastened on a second shaft 9 has a circular shape.
- a program groove 39 which corresponds to the movement sequence of the rotor or the ignition times, and a further control groove 40 for controlling the contact movement.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0106092A AT401982B (de) | 1992-05-22 | 1992-05-22 | Anordnung zur erzeugung der zündspannung für thyristoren |
AT1060/92 | 1992-05-22 | ||
PCT/AT1993/000086 WO1993024943A1 (de) | 1992-05-22 | 1993-05-19 | Anordnung zur erzeugung der zündspannung für thyristoren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0641482A1 true EP0641482A1 (de) | 1995-03-08 |
EP0641482B1 EP0641482B1 (de) | 1996-03-20 |
Family
ID=3505719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93909651A Expired - Lifetime EP0641482B1 (de) | 1992-05-22 | 1993-05-19 | Anordnung zur erzeugung der zündspannung für thyristoren |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0641482B1 (de) |
AT (2) | AT401982B (de) |
BG (1) | BG99196A (de) |
DE (1) | DE59301976D1 (de) |
WO (1) | WO1993024943A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10102310C1 (de) * | 2001-01-18 | 2002-06-20 | Reinhausen Maschf Scheubeck | Thyristor-Stufenschalter |
CN104517745B (zh) * | 2014-12-29 | 2017-06-27 | 刁俊起 | 一种永磁驱动有载调压开关 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH384703A (de) * | 1961-03-28 | 1965-02-26 | Bbc Brown Boveri & Cie | Einrichtung zum Umschalten des Stufenschalters eines Transformators unter Last |
NL123727C (de) * | 1964-08-12 | |||
DE1810541C3 (de) * | 1968-11-23 | 1973-10-04 | Maschinenfabrik Reinhausen Gebrueder Scheubeck Kg, 8400 Regensburg | Anordnung zur Lastumschaltung bei Stufentransformatoren |
BE787271A (fr) * | 1972-08-07 | 1973-02-07 | Acec | Selecteur en charge pour transformateur. |
US4201938A (en) * | 1978-10-02 | 1980-05-06 | Siemens-Allis, Inc. | Voltage regulator which eliminates arcing during tap changes |
WO1988005208A1 (en) * | 1986-12-29 | 1988-07-14 | Elin-Union Aktiengesellschaft Für Elektrische Indu | Thyristor drive for an on-load change-over switch |
ATA129588A (de) * | 1988-05-18 | 1993-06-15 | Elin Union Ag | Stromimpuls-thyristorzuendung |
DE4011019C1 (de) * | 1990-04-05 | 1991-12-05 | Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De |
-
1992
- 1992-05-22 AT AT0106092A patent/AT401982B/de not_active IP Right Cessation
-
1993
- 1993-05-19 AT AT93909651T patent/ATE135846T1/de not_active IP Right Cessation
- 1993-05-19 DE DE59301976T patent/DE59301976D1/de not_active Expired - Fee Related
- 1993-05-19 WO PCT/AT1993/000086 patent/WO1993024943A1/de active IP Right Grant
- 1993-05-19 EP EP93909651A patent/EP0641482B1/de not_active Expired - Lifetime
-
1994
- 1994-11-18 BG BG99196A patent/BG99196A/bg unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9324943A1 * |
Also Published As
Publication number | Publication date |
---|---|
AT401982B (de) | 1997-01-27 |
BG99196A (bg) | 1995-12-29 |
ATE135846T1 (de) | 1996-04-15 |
WO1993024943A1 (de) | 1993-12-09 |
ATA106092A (de) | 1996-05-15 |
EP0641482B1 (de) | 1996-03-20 |
DE59301976D1 (de) | 1996-04-25 |
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