Switchgear cabinet arrangement of a device for producing electric energy
The invention relates to a switch cabinet arrangement of a device for generating electrical energy, wherein the switch cabinet arrangement comprises at least two separate power switch cabinets. The technical object of achieving an optimum scalability of devices for generating electrical energy with at the same time a simple installation and maintenance of the power switch cabinets despite a small available installation space, is achieved according to the invention in that the power switch cabinets respectively comprise a machine connection, a power module, a mains connection and a decentralised control unit, wherein the power module comprises a machine converter, a mains converter, a direct voltage intermediate circuit and a chopper, and wherein the power switch cabinets are electrically connected in parallel to one another via the machine connection and the mains connection.
1. Switch cabinet arrangement of a device for generating electrical energy, wherein the switch cabinet arrangement comprises at least two separate power switch cabinets, wherein the power switch cabinets comprise respectively:
a machine connection,
a power module,
a mains connection, and
a decentralised control unit,
wherein the power module comprises
a machine converter,
a mains converter,
a direct voltage intermediate circuit, and
a chopper,
and wherein the power switch cabinets are electrically connected in parallel to one another via the mains connection and optionally via the machine connection.
2. Switch cabinet arrangement according to claim 1 , wherein alternatively the power switch cabinets are respectively connected individually to the mains via associated secondary windings of one or a plurality of transformers.
3. Switch cabinet arrangement according to claim 1 , wherein the power module comprises a plate-shaped direct current busbar, which comprises on a first side a power switch and a chopper and on a second side capacitors of the direct voltage intermediate circuit.
4. Switch cabinet arrangement according to claim 1 , wherein the power switch cabinets respectively comprise a dU/dt filter.
5. Switch cabinet arrangement according to claim 1 , wherein the power switch cabinets comprise line choke on the mains side.
6. Switch cabinet arrangement according to claim 1 , wherein the power switch cabinets on mains connections and/or on the machine connections comprise respectively devices connected upstream for an electrical isolation of the power switch cabinets.
7. Switch cabinet arrangement according to claim 1 , wherein the power switch cabinets comprise respectively a cooling device, in particular a heat exchanger.
8. Switch cabinet arrangement according to claim 1 , wherein the power switch cabinets are hermetically sealed against ambient air.
9. Switch cabinet arrangement according to claim 1 , wherein the power switch cabinets are electrically connected in parallel by means of A.C. rails.
10. Switch cabinet arrangement according to claim 1 , wherein the power switch cabinets are arranged laterally in series and/or back-to-back.
11. Switch cabinet arrangement according to claim 1 , wherein the switch cabinet arrangement comprises a separate mains connection switch cabinet, which contains a central control unit.
12. Switch cabinet arrangement according to claim 11 , wherein the mains connection switch cabinet comprises at least one mains filter.
13. Switch cabinet arrangement according to claim 11 , wherein the mains connection switch cabinet comprises an auxiliary voltage supply and/or a mains switch.
14. Switch cabinet arrangement according to claim 1 , wherein a central control unit and decentralised control units are provided, which can be connected to one another via fibre optics.
15. Device for generating electrical energy, wherein the device comprises a switch cabinet arrangement according to claim 1 .
16. Device for generating electrical energy according to claim 15 , wherein the device is designed as a wind turbine with a generator, in particular as a wind turbine of an offshore wind farm.