Modular power supply arrangement, in particular for reactors for producing polysilicon

• US 20110169332A1
• Filed: 05/17/2010
• Published: 07/14/2011
• Est. Priority Date: 01/14/2010
• Status: Active Grant

• Current Assignee: AEG Power Solutions BV (3W Power Holdings Limited)
• Original Assignee: AEG Power Solutions BV (3W Power Holdings Limited)
• Inventors: Wallmeier, Peter
• Granted Patent: US 8,829,711 B2
• Time in Patent Office: Days
• US Class Current: 307/31
• CPC Class Codes: H02J 3/38 Arrangements for parallely feeding a single network by two or more generators, converters or transformers
• CPC Class Codes: H02M 5/22 using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

A power supply arrangement for producing polysilicon with a central control unit and a basic supply unit, which are regulated and controlled by control means. The basic supply unit supplies the supply module with electric energy, an output for connecting to loads which are supplied with electric energy from the mains via basic supply unit, and controllable switches, which are connected to the input and to the output and which are configured for adjusting the energy to be supplied to the loads. The switches are controllable. The control unit is supplied with electric energy. The power supply includes a communication bus. The control module and the basic supply module are connectable to the control module and the basic supply module to the communication bus. The control module and the basic supply module provide connections to the control module and the basic supply module to the communication bus.

Claims

1. A power supply arrangement for reactors for producing polysilicon, the power supply comprising

a central control unit and at least one basic supply unit,

the control unit comprises at least one controller for controlling and/or regulating the basic supply unit,

the basic supply unit comprises

at least one input for supplying the basic supply module with electric energy,

at least one output for connecting to a group of loads which can be supplied with electric energy from the power mains via the basic supply unit, and

controllable switches, which are connected at least

indirectly to the input and at least indirectly to the output and which are configured for adjusting the energy to be supplied to the loads via the output,

wherein the switches can be controlled by the control unit,

wherein the control unit is a control module and the basic supply unit is a basic supply module,

the control module includes an input for connection to the power mains for supplying the control module with electric energy,

the power supply arrangement includes a communication bus, and

both the control module and the basic supply module include an interface configured for connecting the control module and the basic supply module to the communication bus.

2. The modular power supply arrangement according to claim 1, wherein the modular power supply arrangement comprises a transformer with several secondary-side taps.

3. The modular power supply arrangement according to claim 2, wherein the taps of the transformer are each associated with a corresponding input of the basic supply module and a group of the controllable switches is associated with each input of the basic supply module for adjusting the electric energy to be received via this input.

4. The modular power supply arrangement according to claim 3, wherein the groups of the controllable switches are connected to the inputs and to the output of the basic module without interconnection of additional switches.

5. The modular power supply arrangement according to claim 4, wherein a node is arranged between the groups of the controllable switches and the output, wherein the node can be connected via an additional controllable switch to a reference potential.

6. The modular power supply arrangement according to claim 1, wherein the modular power supply arrangement comprises several identical or similar basic supply modules.

7. The modular power supply arrangement according to claim 1, wherein the modular power supply arrangement comprises a medium voltage supply module, which comprises at least one input for connection to a power mains supplying electric energy or for connecting transformed inputs and outputs for connection to one corresponding load from the group of loads, which optionally is being supplied with electric energy drawn from the power mains via the transformer, and an interface connecting the modular power supply arrangement to the communication bus.

8. The modular power supply arrangement according to claim 6, wherein the medium voltage supply module comprises at least one converter for increasing a voltage to be applied at the input.

9. The modular power supply arrangement according to claim 7, wherein a corresponding converter is associated with each output of the medium voltage supply module.

10. The modular power supply arrangement according to claim 6, wherein a linked voltage across the outputs is equal to about 0 V at least when the loads connected to the outputs of the medium voltage supply module are supplied with power.

11. The modular power supply arrangement according to claim 1, wherein the modular power supply arrangement comprises a medium frequency supply module which comprises at least one input for connection to a power mains for supplying electric energy and outputs for connection to a corresponding load from the groups of loads, which load can be supplied with electric energy received from the power mains, and an interface connecting the power supply arrangement with the communication bus.

12. The modular power supply arrangement according to claim 10, wherein the medium frequency supply module comprises one or more frequency converters for increasing the frequency of a voltage of the power mains applied at the input.

13. The modular power supply arrangement according to claim 11, wherein a corresponding output of one of the frequency converters is associated with each output.

14. The modular power supply arrangement according to claim 10, wherein the linked voltage across a pair of outputs of the medium frequency supply module is equal to about 0 V at least when the loads connected to the outputs of the medium frequency supply module are supplied with electric power.

15. The modular power supply arrangement according to claim 10, wherein two corresponding terminals are associated with each of the outputs of the medium frequency supply module, with each pair of outputs having two outer terminals and one inner terminal, wherein the outer terminals are associated with a corresponding one of the two outputs of the pair of outputs and the inner terminal is associated with two outputs of the pair of outputs.

16. The modular power supply arrangement according to claim 10, wherein a three-phase AC voltage of 200 V to 600 V is being supplied to the input of the medium frequency supply module, for example from a transformer.

17. The modular power supply arrangement according to claim 10, wherein the modular power supply arrangement comprises several identical or similar medium frequency supply modules.

18. The modular power supply arrangement according to claim 10, wherein the number of the medium frequency supply modules corresponds to the number of the basic supply modules.

19. The modular power supply arrangement according to claim 1, wherein the power supply arrangement comprises control cabinets, and the control module, each basic supply module and optionally each medium frequency supply module are arranged in a corresponding control cabinet.

20. The modular power supply arrangement according claim 19, wherein each medium voltage supply module together with a basic supply module is arranged in a control cabinet.

21. The modular power supply arrangement according to claim 19, wherein each control cabinet comprises a connection to the power mains.

22. The modular power supply arrangement according to claim 1, wherein each module has a connection to an auxiliary power supply.

23. The modular power supply arrangement according to claim 19, wherein each control cabinet has a display unit, in particular a display screen.

24. The modular power supply arrangement according to claim 4, wherein the additional switches are mechanical switches such as contactors.

25. The modular power supply arrangement according to claim 7, characterized in that the medium voltage supply module comprises at least one converter for increasing a voltage to be applied at the input.

26. The modular power supply arrangement according to claim 16, wherein the three-phase AC voltage is about 400 V.

27. The modular power supply arrangement according to claim 20, wherein each control cabinet comprises a connection to the power mains.

28. The modular power supply arrangement according to claim 1, wherein the controllable switches are thyristors.