Patents by Inventor Rodwan Tarek Adra
Rodwan Tarek Adra 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: 9738163Abstract: The present disclosure is directed to an electric drive. The electric drive may include a first power inverter, a second power inverter, and a positive DC bus connecting the first power inverter and the second power inverter. The electric drive may also include a first switch connected to the positive DC bus between the first power inverter and the second power inverter. The electric drive may include a second switch connected to the positive DC bus between the first power inverter and the second power inverter. The electric drive may further include a control unit connected to the first switch and to the second switch. The control unit may be configured to selectively allow current to pass through the first switch and the second switch.Type: GrantFiled: December 2, 2014Date of Patent: August 22, 2017Assignee: Caterpillar Inc.Inventors: Rodwan Tarek Adra, Thomas Michael Sopko, Jr., Jackson Wai, Carlos Eduardo Nino Baron
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Publication number: 20160152146Abstract: The present disclosure is directed to an electric drive. The electric drive may include a first power inverter, a second power inverter, and a positive DC bus connecting the first power inverter and the second power inverter. The electric drive may also include a first switch connected to the positive DC bus between the first power inverter and the second power inverter. The electric drive may include a second switch connected to the positive DC bus between the first power inverter and the second power inverter. The electric drive may further include a control unit connected to the first switch and to the second switch. The control unit may be configured to selectively allow current to pass through the first switch and the second switch.Type: ApplicationFiled: December 2, 2014Publication date: June 2, 2016Applicant: Caterpillar Inc.Inventors: Rodwan Tarek Adra, Thomas Michael Sopko, JR., Jackson Wai, Carlos Eduardo Nino Baron
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Patent number: 8310180Abstract: An electric powertrain for use with an engine and a traction device is disclosed. The electric powertrain has a DC motor/generator operable to receive at least a portion of a first mechanical output from the engine and produce a DC power output. The DC motor/generator is also operable to receive DC power and produce a second mechanical output. The electric powertrain further has a drivetrain operable to receive the DC power output and use the DC power output to drive the traction device. The drivetrain is also operable to generate DC power when the traction device is operated in a dynamic braking mode.Type: GrantFiled: September 20, 2010Date of Patent: November 13, 2012Assignee: Caterpillar Inc.Inventor: Rodwan Tarek Adra
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Publication number: 20110024212Abstract: An electric powertrain for use with an engine and a traction device is disclosed. The electric powertrain has a DC motor/generator operable to receive at least a portion of a first mechanical output from the engine and produce a DC power output. The DC motor/generator is also operable to receive DC power and produce a second mechanical output. The electric powertrain further has a drivetrain operable to receive the DC power output and use the DC power output to drive the traction device. The drivetrain is also operable to generate DC power when the traction device is operated in a dynamic braking mode.Type: ApplicationFiled: September 20, 2010Publication date: February 3, 2011Applicant: CATERPILLAR, INC.Inventor: Rodwan Tarek Adra
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Patent number: 7812555Abstract: An electric powertrain for use with an engine and a traction device is disclosed. The electric powertrain has a DC motor/generator operable to receive at least a portion of a first mechanical output from the engine and produce a DC power output. The DC motor/generator is also operable to receive DC power and produce a second mechanical output. The electric powertrain further has a drivetrain operable to receive the DC power output and use the DC power output to drive the traction device. The drivetrain is also operable to generate DC power when the traction device is operated in a dynamic braking mode.Type: GrantFiled: April 30, 2007Date of Patent: October 12, 2010Assignee: Caterpillar IncInventor: Rodwan Tarek Adra
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Patent number: 7772729Abstract: A selectively configurable electric motor comprises a stator and a plurality of poles electrically coupled to the stator. The selectively configurable electric motor also includes an actuator separated from the poles by an air gap and configured to move relative to the stator in the presence of an electromagnetic field. The selectively configurable electric motor further includes a plurality of electric conductors, each of the plurality of electric conductors substantially wound around one of the plurality of poles. The selectively configurable electric motor also includes a power converter, at least a portion of which is coupled to the plurality of electric conductors, including a plurality of switching elements configured to selectively couple one or more of the plurality of electric conductors in a predetermined electrical configuration.Type: GrantFiled: July 8, 2008Date of Patent: August 10, 2010Assignee: Caterpillar IncInventor: Rodwan Tarek Adra
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Patent number: 7543665Abstract: A power system includes a power source, a first electric machine drivingly connected to the power source, a second electric machine drivingly connected to the power source, and power-system controls. The power-system controls may include a bidirectional power regulator operable to cause the first electric machine to operate as an electric motor and also operable to cause and regulate generation of electricity by the first electric machine. Additionally, the power-system controls may include a unidirectional power regulator operable to cause and regulate generation of electricity by the second electric machine.Type: GrantFiled: March 31, 2006Date of Patent: June 9, 2009Assignee: Caterpillar Inc.Inventors: Edward Lee Zwilling, Rodwan Tarek Adra
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Publication number: 20080272719Abstract: A selectively configurable electric motor comprises a stator and a plurality of poles electrically coupled to the stator. The selectively configurable electric motor also includes an actuator separated from the poles by an air gap and configured to move relative to the stator in the presence of an electromagnetic field. The selectively configurable electric motor further includes a plurality of electric conductors, each of the plurality of electric conductors substantially wound around one of the plurality of poles. The selectively configurable electric motor also includes a power converter, at least a portion of which is coupled to the plurality of electric conductors, including a plurality of switching elements configured to selectively couple one or more of the plurality of electric conductors in a predetermined electrical configuration.Type: ApplicationFiled: July 8, 2008Publication date: November 6, 2008Applicant: Caterpillar Inc.Inventor: Rodwan Tarek Adra
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Publication number: 20080265812Abstract: An electric powertrain for use with an engine and a traction device is disclosed. The electric powertrain has a DC motor/generator operable to receive at least a portion of a first mechanical output from the engine and produce a DC power output. The DC motor/generator is also operable to receive DC power and produce a second mechanical output. The electric powertrain further has a drivetrain operable to receive the DC power output and use the DC power output to drive the traction device. The drivetrain is also operable to generate DC power when the traction device is operated in a dynamic braking mode.Type: ApplicationFiled: April 30, 2007Publication date: October 30, 2008Inventor: Rodwan Tarek Adra
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Patent number: 7400071Abstract: A selectively configurable electric motor comprises a stator and a plurality of poles electrically coupled to the stator. The selectively configurable electric motor also includes an actuator separated from the poles by an air gap and configured to move relative to the stator in the presence of an electromagnetic field. The selectively configurable electric motor further includes a plurality of electric conductors, each of the plurality of electric conductors substantially wound around one of the plurality of poles. The selectively configurable electric motor also includes a power converter, at least a portion of which is coupled to the plurality of electric conductors, including a plurality of switching elements configured to selectively couple one or more of the plurality of electric conductors in a predetermined electrical configuration.Type: GrantFiled: September 29, 2005Date of Patent: July 15, 2008Assignee: Caterpillar Inc.Inventor: Rodwan Tarek Adra
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Publication number: 20070278984Abstract: A 2-phase switched reluctance device topology includes a switched reluctance device having first and second phase coils. Each of the first and second phase coils has a first terminal and a second terminal. The first terminal of each of the first and second phase coils is electrically coupled between two switching elements of a first pair of switching elements. The second terminal of the first phase coil is electrically coupled between two switching elements of a second pair of switching elements. The second terminal of the second phase coil is electrically coupled between two switching elements of a third pair of switching elements. Each switching element includes a first electrode, a second electrode, and a control electrode, wherein the control electrode is communicatively coupled to a switch controller that operates the switching element. Each switching element also includes a diode communicatively coupling the first electrode to the second electrode.Type: ApplicationFiled: May 31, 2006Publication date: December 6, 2007Inventors: Rodwan Tarek Adra, Michael Aaron Caruthers