US2020323092A1
|
|
Condensation resistant power semiconductor module
|
US2018195495A1
|
|
Renewable energy system having a distributed energy storage systems and photovoltaic cogeneration
|
US2018188197A1
|
|
Moisture detecting system and method for use in an IGBT or a MOSFET
|
US9856719B1
|
|
System for supplying power from the main powerhouse to a drill floor powerhouse
|
US2013271083A1
|
|
Energy storage system for supplying power to loads of a drilling rig
|
US2012292992A1
|
|
Dual fuel system and method of supplying power to loads of a drilling rig
|
US2012223524A1
|
|
System and method of supplying power to loads of a drilling rig
|
EP2501863A2
|
|
Permanent magnet direct drive drawworks
|
US2011309315A1
|
|
Two speed direct drive drawworks
|
US2011148209A1
|
|
Energy storage system for peak-shaving of drilling rig power usage
|
US2011073297A1
|
|
Permanent magnet direct drive drawworks
|
US2010329905A1
|
|
Permanent magnet direct drive mud pump
|
US2010314168A1
|
|
Flywheel-based energy storage on a heave-compensating drawworks
|
US7851962B1
|
|
Induction motor utilizing dual stators and a double squirrel cage motor
|
US7633248B1
|
|
Flywheel-based energy storage on a heave-compensating drawworks
|
WO2008130411A1
|
|
Laser diode triggered soft start controller for a polyphase electric motor
|
US7654355B1
|
|
Flywheel system for use with electric wheels in a hybrid vehicle
|
US7552787B1
|
|
Energy recoverable wheel motor
|
US7282887B1
|
|
Laser diode triggered soft start controller for a polyphase electric motor
|