Method and system for controlling hydroelectric turbines

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9541053
APP PUB NO 20140319836A1
SERIAL NO

14238414

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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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Patent Owner(s)

  • OPENHYDRO IP LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cawthorne, Simon Carlingford, IE 12 32
Khoo, Wee Keong Carlingford, IE 4 19
Spooner, Edward Bishop Auckland, GB 18 230

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