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Title:
METHOD AND SYSTEM FOR CONTROLLING HYDROELECTRIC TURBINES
Document Type and Number:
WIPO Patent Application WO/2013/024034
Kind Code:
A3
Abstract:
A control system for controlling an operation of a hydroelectric turbine. The control system comprises a converter system to convert AC power, supplied by a generator connected to the turbine, and having a voltage and frequency that is a function of a rotational speed of the turbine, to AC power having a voltage and frequency of a transmission system for transmitting the AC power to a receiving station. The system further comprises a control unit that is arranged to co-operate with the converter system to adjust the AC voltage supplied by the generator in response to a water flow speed through the turbine to thereby control rotation of the turbine. The converter system comprises a first-stage converter and a second-stage converter, with a DC link provided between the first and second-stage converters. The first-stage converter is arranged to convert the AC power supplied by the generator to DC power. The second-stage converter is arranged to convert the DC power to the AC Power for transmission to the receiving station and the second-stage converter is of a current- source inverter type.

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Inventors:
SPOONER EDWARD (GB)
CAWTHORNE SIMON (IE)
KHOO WEE KEONG (IE)
Application Number:
PCT/EP2012/065701
Publication Date:
August 22, 2013
Filing Date:
August 10, 2012
Export Citation:
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Assignee:
OPENHYDRO IP LTD (IE)
SPOONER EDWARD (GB)
CAWTHORNE SIMON (IE)
KHOO WEE KEONG (IE)
International Classes:
H02P9/48; A47G19/02; H02M5/45
Domestic Patent References:
WO2008055515A12008-05-15
WO2000036298A12000-06-22
Foreign References:
US20100109325A12010-05-06
US20050012339A12005-01-20
US6437996B12002-08-20
JP2003319694A2003-11-07
US20030218338A12003-11-27
SU1119144A11984-10-15
DE10241249A12004-03-18
Attorney, Agent or Firm:
KELLY, Madeleine (Dublin, 4, IE)
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