Patents by Inventor Stephen Tonks
Stephen Tonks has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9523349Abstract: A wind turbine control method is described comprising the detection of the presence of an anomaly in the aerodynamic profile of the blades and operation of the wind turbine in accordance not only with the determination of said anomaly, but also taking into account the characteristics thereof.Type: GrantFiled: July 10, 2013Date of Patent: December 20, 2016Assignee: Acciona Windpower, S.A.Inventors: Alberto Garcia Barace, Oscar Luquin Hermoso De Mendoza, Igor Egana Santamarina, Teresa Arlaban Gabeiras, Stephen Tonks, Jose Miguel Garcia Sayes, Miguel Nunez Polo
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Patent number: 8896142Abstract: The present disclosure relates to a method for controlling a wind turbine of the type including a rotor, a generator, a frequency converter, a control unit and means for connecting to a wind farm grid, using means for receiving a local voltage reference value (VREF) and a regulator (1) which calculates the reactive power to be generated (QT) as a function of the voltage error (?V), such that it can be operated over the entire voltage range. The system also includes: at least one saturator element (2, 6, 7) in which the reactive power to be generated is limited, whereby the limits (Q—MAX, Q—MIN, QC—MAX, QC—MIN, QS—MAX, QS—MIN) are calculated dynamically as a function of the voltage, this block outputting a reference reactive power of the wind turbine (Q—REF, QC—REF, Qs—REF); and an element (3) for calculating the actual limit of the active power (PMAX) as a function of the pre-limited reactive power (Q—REF, Qs—REF) and the apparent power available at that moment.Type: GrantFiled: June 3, 2009Date of Patent: November 25, 2014Assignee: Acciona Windpower, S.A.Inventors: Teresa Arlaban Gabeiras, Oscar Alonso Sadaba, Ana Huarte Amezqueta, Alberto García Barace, José Miguel García Sayes, Ricardo Royo García, Stephen Tonks, Miguel Núñez Polo
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Patent number: 8659178Abstract: A wind turbine control method for dampening vibrations of a transmission system, even in the presence of voltage dips and in any event that is susceptible to reducing active current generation capacity, is provided. First, for example, an initial torque or power instruction may be calculated based on a turbine operating state. Next, a torque or power adjustment term associated with dampening vibration modes of a turbine transmission system may be calculated. Then, a final torque or power instruction may be calculated by, for example, applying the adjustment term to the initial instruction. Finally, the final torque or power instruction may be transformed into a current instruction for controlling the wind turbine.Type: GrantFiled: February 11, 2010Date of Patent: February 25, 2014Assignee: Acciona Windpower, S.A.Inventors: Teresa Arlabán Gabeiras, Oscar Alonso Sádaba, Alberto Garcia Barace, Ricardo Royo García, Stephen Tonks, José Miguel García Sayés, Miguel Nuñez Polo
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Publication number: 20140028024Abstract: A wind turbine control method is described comprising the detection of the presence of an anomaly in the aerodynamic profile of the blades and operation of the wind turbine in accordance not only with the determination of said anomaly, but also taking into account the characteristics thereof.Type: ApplicationFiled: July 10, 2013Publication date: January 30, 2014Applicant: ACCIONA WINDPOWER, S.A.Inventors: Alberto GARCIA BARACE, Oscar LUQUIN HERMOSO DE MENDOZA, Igor EGANA SANTAMARINA, Teresa ARLABAN GABEIRAS, Stephen TONKS, Jose Miguel GARCIA SAYES, Miguel NUNEZ POLO
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Patent number: 8380357Abstract: Wind turbine control may be provided. First, a control parameter indicative of foreseeable fluctuations in a rotational speed of a rotor due to wind turbulence may be obtained. The first control parameter may be calculated based on a first signal indicative of a wind power and a second signal indicative of wind turbulence intensity. Then, the control parameter may be compared with a threshold value. Next, a maximum power to be generated by the wind turbine may be reduced if the control parameter exceeds said threshold.Type: GrantFiled: March 22, 2010Date of Patent: February 19, 2013Assignee: Acciona Windpower, S.A.Inventors: Alberto Garcia Barace, Igor Egaña Santamarina, Antonio Torres Elizondo, Stephen Tonks, Eduardo Azanza Ladrón, José Miguel García Sayes, Miguel Nuñez Polo
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Publication number: 20110156389Abstract: The present disclosure relates to a method for controlling a wind turbine of the type including a rotor, a generator, a frequency converter, a control unit and means for connecting to a wind farm grid, using means for receiving a local voltage reference value (VREF) and a regulator (1) which calculates the reactive power to be generated (QT) as a function of the voltage error (?V), such that it can be operated over the entire voltage range. The system also includes: at least one saturator element (2, 6, 7) in which the reactive power to be generated is limited, whereby the limits (Q—MAX, Q—MIN, QC—MAX, QC—MIN, QS—MAX, QS—MIN) are calculated dynamically as a function of the voltage, this block outputting a reference reactive power of the wind turbine (Q—REF, QC—REF, Qs—REF); and an element (3) for calculating the actual limit of the active power (PMAX) as a function of the pre-limited reactive power (Q—REF, Qs—REF) and the apparent power available at that moment.Type: ApplicationFiled: June 3, 2009Publication date: June 30, 2011Inventors: Teresa Arlaban Gabeiras, Oscar Alonso Sadaba, Ana Huarte Amezqueta, Alberto García Barace, José Miguel García Sayes, Ricardo Royo García, Stephen Tonks, Miguel Núñez Polo
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Publication number: 20100241280Abstract: Wind turbine control may be provided. First, a control parameter indicative of foreseeable fluctuations in a rotational speed of a rotor due to wind turbulence may be obtained. The first control parameter may be calculated based on a first signal indicative of a wind power and a second signal indicative of wind turbulence intensity. Then, the control parameter may be compared with a threshold value. Next, a maximum power to be generated by the wind turbine may be reduced if the control parameter exceeds said threshold.Type: ApplicationFiled: March 22, 2010Publication date: September 23, 2010Applicant: ACCIONA WINDPOWER, S.A.Inventors: Alberto Garcia Barace, Igor Egaña Santamarina, Antonio Torres Elizondo, Stephen Tonks, Eduardo Azanza Ladrón, José Miguel García Sayes, Miguel Nuñez Polo
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Publication number: 20100219634Abstract: A wind turbine control method for dampening vibrations of a transmission system, even in the presence of voltage dips and in any event that is susceptible to reducing active current generation capacity, is provided. First, for example, an initial torque or power instruction may be calculated based on a turbine operating state. Next, a torque or power adjustment term associated with dampening vibration modes of a turbine transmission system may be calculated. Then, a final torque or power instruction may be calculated by, for example, applying the adjustment term to the initial instruction. Finally, the final torque or power instruction may be transformed into a current instruction for controlling the wind turbine.Type: ApplicationFiled: February 11, 2010Publication date: September 2, 2010Applicant: ACCIONA WINDPOWER, S.A.Inventors: TERESA ARLABAN GABEIRAS, Oscar Alonso Sádaba, Alberto Garcia Barace, Ricardo Royo García, Stephen Tonks, José Miguel García Sayés, Miguel Nuñez Polo