초록 ▼

In a device for disconnecting and/or connecting m phases (u, v, and w) of an alternating voltage providing source (1) from n phases (n1, n2, n3) of a load (3), each of the m phases (u, v, w) of the source (1) independently is connected by a power switch (9) with each of the n phases in a m×n matrix.

In a device for disconnecting and/or connecting m phases (u, v, and w) of an alternating voltage providing source (1) from n phases (n1, n2, n3) of a load (3), each of the m phases (u, v, w) of the source (1) independently is connected by a power switch (9) with each of the n phases in a m×n matrix. First measuring devices (4) for monitoring the m phases (u, v, w) of the source (1) as well as 2nd measuring devices (5) for monitoring the n phases (n1, n2, n3) of the load (3) are provided, and a switching unit (6) is provided, which controls the switching state of the switches (9) depending on the state of the m phases (u, v, w) of the source (1) and of the n phases (n1, n2, n3) of the load (3). This construction allows a particularly quick connection and/or disconnection for increased stability.

대표청구항 ▼

What is claimed is: 1. A system comprising: a generator having m phases; a grid having n phases; and a device for disconnecting and/or connecting the m phases of the generator from the n phases of the grid, the device comprising at least one power switch connecting each of the m phases of the gener

What is claimed is: 1. A system comprising: a generator having m phases; a grid having n phases; and a device for disconnecting and/or connecting the m phases of the generator from the n phases of the grid, the device comprising at least one power switch connecting each of the m phases of the generator independently with each of the n phases of the grid in an m x n matrix; first measuring devices configured and arranged to monitor the m phases of the generator and second measuring devices configured and arranged to monitor the n phases of the grid; a switching unit configured and arranged to control the switching state of the at least one power switch depending on the state of the m phases of the generator and the n phases of the grid; and damping elements configured and arranged to reduce start fluctuations, wherein the damping elements comprise transiently connectable resistors in each of the generator's phases and between the generator and the grid. 2. A device according to claim 1, further comprising a transformer arranged between said device and said generator. 3. A device according to claim 2, wherein the at least one power switch is at least partially integrated into the generator; or wherein the at least one power switch is at least partially integrated into the transformer; or both. 4. A device according to claim 2, wherein the transformer comprises a housing and a cooling device; and wherein at least one of the at least one power switch is arranged in the transformer housing and cooled by the transformer cooling device. 5. A device according to claim 2, wherein the transformer comprises a housing, and further comprising an independent cooling device; and wherein at least one of the at least one power switch is arranged in the transformer housing and cooled by the independent cooling device. 6. A device according to claim 1, wherein the grid comprises a superposed transformer. 7. A device according to claim 1, further comprising: switch groups with n power switches; and wherein the generator comprises stator windings each having two sides and arranged in a delta connection and connected on both sides by the switch groups to the n phases of the grid. 8. A device according to claim 1, further comprising: power switches; wherein the generator comprises stator windings, each winding having two sides, arranged in a star connection with a neutral point; wherein each of the stator windings is connected on both sides by the power switches with the neutral point and by power switches with the phases of the grid; wherein a switch group comprising n of said power switches is arranged between the power switches and phases of the grid, said switch group permitting individual connections to the individual phases of the load. 9. A device according to claim 1, wherein at least one of said at least one power switch comprises an electronic power switch. 10. A device according to claim 9, wherein the at least one power switch comprises at least two thyristors arranged in anti-parallel. 11. A device according to claim 9, wherein at least one of the at least one power switch comprises SiC-based thyristors. 12. A device according to claim 9, wherein at least one of the at least one power switch comprises at least two opposing IGBT elements connected in series, GTO elements, or both. 13. A device according to claim 12, wherein the GTO elements comprise SiC-GTO elements with respective diodes connected in anti-parallel. 14. A device according to claim 1, wherein the generator comprises a generator with an output in excess of 1 MW, optionally with an output above 50 MW, optionally with an output above 2000 MW. 15. A device according to claim 1, wherein the generator has 3, 6, 9, 12, 15, 18, 21, or 24 phases, and wherein the grid has 3 or 6 phases. 16. A device according to claim 1, wherein the generator comprises a housing and a cooling agent; and wherein at least one of the at least one power switch is arranged in the generator housing and cooled by the generator cooling agent. 17. A method for changing a connection state between an alternating voltage current-providing generator and a grid having a load, between an unconnected state and a connected state, by connecting and/or disconnecting m phases of the generator from n phases of the grid, the method comprising: providing a device according to claim 1; independently connecting each of the m phases of the generator by at least one power switch with each of the n phases of the grid in an m x n matrix; opening or closing a maximum of n power switches with said switching unit; monitoring the m phases of the generator with the first measuring devices and monitoring the n phases of the grid with the second measuring devices, wherein said monitoring with the first measuring devices, said monitoring with the second measuring devices, or both, comprises recording a reference phase; providing a connectivity grid comprising at least one of said first and second measuring devices, or the switching unit; and connecting the generator to the grid when the phase of the generator has the same voltage as the nearest phase of the grid, or if the phase of the generator leads the nearest phase of the grid. 18. A method according to claim 17, further comprising: providing a lock logic in the switching unit to prevent the at least one power switch from generating short circuits between load phases, between generator phases, or between both. 19. A method according to claim 17, further comprising: symmetrically distributing the m phases of the source connected to load with the switching unit. 20. A method according to claim 17, further comprising: simultaneously, or in a regulated, brief sequence, closing all open power switches in a group of the at least one power switch when the current on a load side exceeds a threshold, when the voltage on a load side falls below a threshold, or both. 21. A method according to claim 17, further comprising: closing a group of n power switches automatically, optionally following a pre-set delay, after being opened when the voltage on a grid side again exceeds a threshold. 22. A device according to claim 1, further comprising: an independent cooling device; wherein the generator comprises a housing; and wherein at least one of the at least one power switch is arranged in the generator housing and cooled by the independent cooling device. 23. A device according to claim 22, wherein the independent cooling device comprises an independent cooling cycle. 24. A system comprising: a generator having m phases; a grid having n phases; and a device for disconnecting and/or connecting the m phases of the generator from the n phases of the grid, the device comprising at least one power switch configured and arranged to connect each of the m phases of the generator independently with each of the n phases of the grid in an m x n matrix; first measuring devices configured and arranged to monitor the m phases of the generator and second measuring devices configured and arranged to monitor the n phases of the grid; a switching unit configured and arranged to control the switching state of the at least one power switch depending on the state of the m phases of the generator and the n phases of the grid; and damping elements configured and arranged to reduce start fluctuations, wherein the damping elements comprise transiently connectable resistors in each of the generator's phases and between the generator and the grid; an R/C load; an overvoltage protection system including a diode bridge and a damping capacity, the diode bridge configured and arranged to divert overvoltage energies to the damping capacity, the diode bridge also configured and arranged to connect each of the generator phases and each of the grid phases to the R/C load.