Patents Assigned to TECO-Westinghouse Motor Company
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Publication number: 20140183991Abstract: Cooling apparatuses and methods comprising cooling apparatuses, such as those configured to be coupled to and/or cool electric machines (e.g., motors, generators, and the like).Type: ApplicationFiled: March 8, 2013Publication date: July 3, 2014Applicant: TECO-Westinghouse Motor CompanyInventors: Devdatta P. Kulkarni, Gabriel Rupertus, Edward Chen
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Publication number: 20140183986Abstract: Cooling assemblies and methods, including, for example, at least one bar (e.g., electrically insulated and/or thermally conductive bar(s)), members (e.g., i-beams, rectangular members, and the like), stator laminations, rotor laminations, and/or combinations thereof, such as those configured to cool electric machines (e.g., electric motors and generators).Type: ApplicationFiled: March 8, 2013Publication date: July 3, 2014Applicant: TECO-Westinghouse Motor CompanyInventors: Devdatta P. Kulkarni, Gabriel Rupertus, Edward Chen, Lex Ramsey
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Publication number: 20140183988Abstract: Cooling assemblies (e.g., tubes, members (e.g., i-beams, rectangular members, and the like), stator windings, stator laminations, and/or combinations thereof), such as those configured to cool electric machines (e.g., electric motors and generators).Type: ApplicationFiled: March 8, 2013Publication date: July 3, 2014Applicant: TECO-Westinghouse Motor CompanyInventors: Devdatta P. Kulkarni, Gabriel Rupertus, Edward Chen, Lex Ramsey
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Patent number: 8711530Abstract: In one embodiment, a power cell chamber for a drive system includes moveable and fixed portions. The moveable portion includes a rectifier stage to rectify an input signal received from a secondary winding of a transformer to provide a rectified signal and an inverter stage having a plurality of switching devices to receive a DC signal and output an AC signal. This moveable portion can be slidably adapted within a cabinet of the drive system. In turn, the fixed portion includes a DC link having at least one capacitor to receive the rectified signal and provide the DC signal to the inverter stage.Type: GrantFiled: July 28, 2010Date of Patent: April 29, 2014Assignee: TECO-Westinghouse Motor CompanyInventors: Enrique Ledezma, Thomas Keister, Mehdi Abolhassani, Ryan Edwards, Alex Skorcz, Randall Pipho, Srinivas Satumahanti
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Patent number: 8601190Abstract: A control system may be provided for a controlled system such as a drive or inverter system. To provide for control in such system, a master controller may be present to receive, via a second communication protocol from a cabinet controller coupled to the master controller, status information of a controlled device, generate control information based at least in part on the status information, and transmit the control information to the cabinet controller via the second communication protocol. In turn, the cabinet controller can generate and communicate a control packet to the controlled device via a first communication protocol. This packet can be interleaved within another message communicated from the cabinet controller to the device.Type: GrantFiled: June 24, 2011Date of Patent: December 3, 2013Assignee: TECO-Westinghouse Motor CompanyInventors: Randall Pipho, Ryan Edwards, Mehdi Abolhassani, Enrique Ledezma, Alex Skorcz, Thomas Keister
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Patent number: 8471424Abstract: Permanent-magnet (PM) rotors, rotor components, and machines using PM rotors.Type: GrantFiled: July 30, 2009Date of Patent: June 25, 2013Assignee: Teco-Westinghouse Motor CompanyInventors: Xueqing Feng, Lijun Liu
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Patent number: 8461737Abstract: Line-start permanent-magnet (LSPM) rotors, rotor components, and machines using LSPM rotors, where the PM rotors have PM bulks in W-like shapes, vent openings between PM bulks, and/or air gaps at ends of PM bulks in the W-like shapes.Type: GrantFiled: November 30, 2009Date of Patent: June 11, 2013Assignee: TECO-Westinghouse Motor CompanyInventors: Xueqing Feng, Lijun Liu
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Patent number: 8387258Abstract: Insulation assemblies that are useful with bearing assemblies that fit in openings in bearing brackets of rotating machines, such as large synchronous motors or generators.Type: GrantFiled: May 7, 2004Date of Patent: March 5, 2013Assignee: TECO-Westinghouse Motor CompanyInventors: Ping Zhong, Gabriel Damon Rupertus
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Patent number: 8279640Abstract: In one embodiment, a system may include multiple transformers each to provide an output to one or more power cells, where the power cells provide AC power to a load. Each transformer may have at least one primary winding and multiple secondary windings, where the primary winding of each transformer is phase shifted with respect to its neighboring transformers and the secondary windings are also phase shifted. The phase shift of the primary winding can be based on the phase shift of the secondary windings and a number of the plurality of transformers.Type: GrantFiled: September 24, 2008Date of Patent: October 2, 2012Assignee: TECO-Westinghouse Motor CompanyInventors: Mehdi Abolhassani, Ryan Edwards, Thomas Keister, Alex Skorcz, Enrique Ledezma, Chao Hsu Liao
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Patent number: 8254076Abstract: In one embodiment, a medium voltage drive system includes at least one transformer and multiple power cell chambers each coupled to a transformer. The power cell chambers each may include a rectifier, a DC-link, and an inverter. Each power cell chamber can be separated into fixed and moveable portions, where the moveable portion includes the rectifier and the inverter and the fixed portion includes the DC-link. A power service bus can couple the fixed and moveable portions of each power cell chamber and couple in series groups of the plurality of power cell chambers.Type: GrantFiled: June 30, 2009Date of Patent: August 28, 2012Assignee: TECO-Westinghouse Motor CompanyInventors: Enrique Ledezma, Thomas Keister, Mehdi Abolhassani, Ryan Edwards, Alex Skorcz, Randall Pipho, Srinivas Satumahanti
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Patent number: 8213198Abstract: In one embodiment, the present invention includes a medium voltage drive system having multiple power cells each to couple between a transformer and a load. A first subset of the power cells are configured to provide power to the load and to perform partial regeneration from the load, and a second subset of the power cells are configured to provide power to the load but not perform partial regeneration. A controller may be included in the system to simultaneously control a DC bus voltage of at least one of the first subset of the power cells, correct a power factor of the system, and provide harmonic current compensation for the system.Type: GrantFiled: April 27, 2011Date of Patent: July 3, 2012Assignee: TECO-Westinghouse Motor CompanyInventors: Mehdi Abolhassani, Thomas Keister, Alex Skorcz, Enrique Ledezma, Ryan Edwards
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Patent number: 8130501Abstract: In one embodiment, a power cell chamber for a drive system includes moveable and fixed portions. The moveable portion includes a rectifier stage to rectify an input signal received from a secondary winding of a transformer to provide a rectified signal and an inverter stage having a plurality of switching devices to receive a DC signal and output an AC signal. This moveable portion can be slidably adapted within a cabinet of the drive system. In turn, the fixed portion includes a DC link having at least one capacitor to receive the rectified signal and provide the DC signal to the inverter stage.Type: GrantFiled: June 30, 2009Date of Patent: March 6, 2012Assignee: TECO-Westinghouse Motor CompanyInventors: Enrique Ledezma, Thomas Keister, Mehdi Abolhassani, Ryan Edwards, Alex Skorcz, Randall Pipho, Srinivas Satumahanti
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Patent number: 8129853Abstract: In one embodiment, the present invention includes a turbine to generate mechanical energy from kinetic energy, a generator coupled to the turbine to receive the mechanical energy and to output multiple isolated supply powers, and multiple power stages each coupled to the generator. Each of the power stages may receive at least one of the isolated supply powers.Type: GrantFiled: June 30, 2010Date of Patent: March 6, 2012Assignee: TECO-Westinghouse Motor CompanyInventors: Mehdi Abolhassani, Thomas Keister, Haran Karmaker, Ryan Edwards, Enrique Ledezma, Alex Skorcz
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Patent number: 8106526Abstract: In one embodiment, the present invention includes a turbine to generate mechanical energy from kinetic energy, a generator coupled to the turbine to receive the mechanical energy and to output multiple isolated supply powers, and multiple power stages each coupled to the generator. Each of the power stages may receive at least one of the isolated supply powers.Type: GrantFiled: June 30, 2010Date of Patent: January 31, 2012Assignee: TECO-Westinghouse Motor CompanyInventors: Mehdi Abolhassani, Thomas Keister, Haran Karmaker, Ryan Edwards, Enrique Ledezma, Alex Skorcz
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Patent number: 8045346Abstract: In one embodiment, the present invention includes a system having multiple modular transformers each including a primary winding coupled to an input power source and phase-shifted secondary windings each coupled to a power cell. The system further includes different phase output lines coupled to a load. These lines may include first, second and third phase output lines.Type: GrantFiled: September 27, 2010Date of Patent: October 25, 2011Assignee: TECO-Westinghouse Motor CompanyInventors: Mehdi Abolhassani, Ryan Edwards, Thomas Keister, Alex Skorcz, Enrique Ledezma, Chao Hsu Liao
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Patent number: 7994679Abstract: Stator for use in an electrical machine. A non-magnetic support frame section and a non-magnetic axial coil support are used to provide an air gap stator configuration. The present stators provide an air gap winding configuration that facilitates the fixing of stator coils in the air gap. The stator coils are located near the surface of the magnetic back iron and are separated from adjacent coils by non-magnetic structure.Type: GrantFiled: February 4, 2009Date of Patent: August 9, 2011Assignee: TECO-Westinghouse Motor CompanyInventor: Di Wu
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Patent number: 7940537Abstract: In one embodiment, the present invention includes a medium voltage drive system having multiple power cells each to couple between a transformer and a load. A first subset of the power cells are configured to provide power to the load and to perform partial regeneration from the load, and a second subset of the power cells are configured to provide power to the load but not perform partial regeneration. A controller may be included in the system to simultaneously control a DC bus voltage of at least one of the first subset of the power cells, correct a power factor of the system, and provide harmonic current compensation for the system.Type: GrantFiled: December 31, 2008Date of Patent: May 10, 2011Assignee: TECO-Westinghouse Motor CompanyInventors: Mehdi Abolhassani, Thomas Keister, Alex Skorcz, Enrique Ledezma, Ryan Edwards
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Patent number: 7863766Abstract: In one embodiment, the present invention includes a turbine to generate mechanical energy from kinetic energy, a generator coupled to the turbine to receive the mechanical energy and to output multiple isolated supply powers, and multiple power stages each coupled to the generator. Each of the power stages may receive at least one of the isolated supply powers.Type: GrantFiled: June 30, 2009Date of Patent: January 4, 2011Assignee: TECO-Westinghouse Motor CompanyInventors: Mehdi Abolhassani, Thomas Keister, Haran Karmaker, Ryan Edwards, Enrique Ledezma, Alex Skorcz
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Patent number: 7855485Abstract: Stator for use in an electrical machine. A non-magnetic support frame section and a non-magnetic coil support are used to provide an air gap stator configuration. The present stators provide an air gap winding configuration that facilitates the fixing of stator coils in the air gap, spaced apart from the magnetic back iron.Type: GrantFiled: February 4, 2009Date of Patent: December 21, 2010Assignee: TECO - Westinghouse Motor CompanyInventor: Di Wu
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Patent number: 7830681Abstract: In one embodiment, the present invention includes a system having multiple modular transformers each including a phase-shifted primary winding coupled to an input power source and phase-shifted secondary windings each coupled to a power cell. The system further includes different phase output lines coupled to a load. These lines may include first, second and third phase output lines.Type: GrantFiled: September 24, 2008Date of Patent: November 9, 2010Assignee: TECO-Westinghouse Motor CompanyInventors: Mehdi Abolhassani, Ryan Edwards, Thomas Keister, Alex Skorcz, Enrique Ledezma, Chao Hsu Liao