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Hongtao Ma
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Orlando, FL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for determining a weakened grid condition and...
Patent number
10,042,374
Issue date
Aug 7, 2018
Siemens Gamesa Renewable Energy A/S
Robert J. Nelson
G05 - CONTROLLING REGULATING
Information
Patent Grant
Isochronous wind turbine generator capable of stand-alone operation
Patent number
9,593,672
Issue date
Mar 14, 2017
Siemens Aktiengesellschaft
Robert J. Nelson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Controlling wind power plant with negative power capability to resp...
Patent number
9,458,828
Issue date
Oct 4, 2016
Siemens Aktiengesellschaft
Kaj Skov Nielsen
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information
Patent Grant
Wind turbine generator controller responsive to grid frequency change
Patent number
9,450,416
Issue date
Sep 20, 2016
Siemens Aktiengesellschaft
Hongtao Ma
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method and apparatus for adaptively controlling wind park turbines
Patent number
9,190,845
Issue date
Nov 17, 2015
Siemens Aktiengesellschaft
Robert J. Nelson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method and system for limitation of power output variation in varia...
Patent number
8,823,193
Issue date
Sep 2, 2014
Siemens Aktiengesellschaft
Najlae M Yazghi
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Grant
Bang-bang controller and control method for variable speed wind tur...
Patent number
8,219,256
Issue date
Jul 10, 2012
Siemens Aktiengesellschaft
Robert J. Nelson
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Patents Applications
last 30 patents
Information
Patent Application
METHOD AND APPARATUS FOR DETERMINING A WEAKENED GRID CONDITION AND...
Publication number
20150361954
Publication date
Dec 17, 2015
SIEMENS AKTIENGESELLSCHAFT
Robert J. Nelson
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Application
CONTROLLING WIND POWER PLANT WITH NEGATIVE POWER CAPABILITY TO RESP...
Publication number
20150159627
Publication date
Jun 11, 2015
Siemens Aktiengesellschaft
Kaj Skov Nielsen
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Application
ISOCHRONOUS WIND TURBINE GENERATOR CAPABLE OF STAND-ALONE OPERATION
Publication number
20150042092
Publication date
Feb 12, 2015
Robert J. Nelson
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Application
WIND TURBINE GENERATOR CONTROLLER RESPONSIVE TO GRID FREQUENCY CHANGE
Publication number
20150022007
Publication date
Jan 22, 2015
Hongtao Ma
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
METHOD AND APPARATUS FOR ADAPTIVELY CONTROLLING WIND PARK TURBINES
Publication number
20140021720
Publication date
Jan 23, 2014
Robert J. Nelson
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and system for damping subsynchronous resonant oscillations...
Publication number
20130027994
Publication date
Jan 31, 2013
Siemens Aktiengesellschaft
Robert J. Nelson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
METHOD AND APPARATUS FOR MINIMIZING HARMONIC CURRENTS IN A WIND TUR...
Publication number
20120019007
Publication date
Jan 26, 2012
Robert J. Nelson
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Bang-Bang Controller and Control Method For Variable Speed Wind Tur...
Publication number
20110012352
Publication date
Jan 20, 2011
Robert J. Nelson
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...