Patents by Inventor Eric Coupart
Eric Coupart 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).
-
Publication number: 20240291412Abstract: A variable frequency drive motor system and method with a single variable frequency drive controller controlling multiple synchronous reluctance motors in an open-loop mode using volts-per-Hertz control. Each motor includes a rotor including three or more curved, spaced-apart barrier slots extending longitudinally through each quadrant of the rotor. The rotor also includes a conductive cage including a plurality of conductive rotor bars contained within the barrier slots and also extending longitudinally through each quadrant, and conductive end rings located at opposite ends of the rotor and electrically connected to the respective ends of the rotor bars. The controller controls speed and torque by varying input frequency and voltage in an open-loop mode by adjusting the voltage magnitude of an inverter's output to each motor to match a required load torque in a volts-per-Hertz relationship. An operator interface allows for starting, stopping, adjusting, and otherwise controlling the operation of each motor.Type: ApplicationFiled: June 22, 2022Publication date: August 29, 2024Applicant: Nidec Motor CorporationInventors: Timothy R. Albers, Eric Coupart, Michael L. McClelland, Sheng-Chan Yen, Guo-Jhih Yan, Ta-Yin Luo, Yu-Wei Hsu, Pei-Chun Shih, Cheng-Tsung Liu
-
Publication number: 20240039434Abstract: A dual motor system includes a first motor providing a lower speed range and a second motor providing a higher speed range, wherein the motors are coaxially arranged and aligned on and drive a common shaft, and a motor control system controlling the speed of the first motor and engaging the second motor as needed. The first motor provides a lower two-thirds of a full speed range, and the second motor provides the upper one-third in the form of one or more discrete fixed speeds. The system may also include a flow control system for automatically controlling the speed of the motors for particular applications, such as flow control in a pool.Type: ApplicationFiled: October 9, 2023Publication date: February 1, 2024Applicant: Nidec Motor CorporationInventors: Eric Coupart, James D. Ellis, II, Pranesh Rao, John G. Schrader, Bret S. Clark
-
Patent number: 11784591Abstract: A dual motor system includes a first motor providing a lower speed range and a second motor providing a higher speed range, wherein the motors are coaxially arranged and aligned on and drive a common shaft, and a motor control system controlling the speed of the first motor and engaging the second motor as needed. The first motor is a variable speed motor providing a lower two-thirds of a full speed range, and the second motor is an induction motor providing the upper one-third in the form of one or more discrete fixed speeds. The system may include a transformer including a first winding tap which provides a first higher speed, and a second winding tap which provides a second higher speed. The system may also include a flow control system for automatically controlling the speed of the motors for particular applications, such as flow control in a pool.Type: GrantFiled: October 23, 2020Date of Patent: October 10, 2023Assignee: Nidec Motor CorporationInventors: Eric Coupart, James D. Ellis, II, Pranesh Rao, Bret S. Clark, John G. Schrader
-
Patent number: 11739759Abstract: A dual motor system includes a first motor providing a lower speed range and a second motor providing a higher speed range, wherein the motors are coaxially arranged and aligned on and drive a common shaft, and a motor control system controlling the speed of the first motor and engaging the second motor as needed. The first motor is a variable speed motor providing a lower two-thirds of a full speed range, and the second motor is an induction motor providing the upper one-third in the form of one or more discrete fixed speeds. The system may include a transformer including a first winding tap which provides a first higher speed, and a second winding tap which provides a second higher speed. The system may also include a flow control system for automatically controlling the speed of the motors for particular applications, such as flow control in a pool.Type: GrantFiled: October 23, 2020Date of Patent: August 29, 2023Assignee: Nidec Motor CorporationInventors: John G. Schrader, Eric Coupart, Ryan M. Bastien, Richard A. Belley
-
Publication number: 20230155454Abstract: A rotary electric machine includes a stator housed in a housing, the stator having a stator body formed by a stack of stator laminations, the laminations are generally non-circular and being angularly offset with respect to each other, so as to form spaces with the housing, the housing having ducts for the flow of a coolant, and said spaces also being used for the flow of the coolant.Type: ApplicationFiled: November 15, 2022Publication date: May 18, 2023Inventors: Michael Leo McCLELLAND, Eric Coupart, Thierry Chassara
-
Publication number: 20210123442Abstract: A dual motor system includes a first motor providing a lower speed range and a second motor providing a higher speed range, wherein the motors are coaxially arranged and aligned on and drive a common shaft, and a motor control system controlling the speed of the first motor and engaging the second motor as needed. The first motor is a variable speed motor providing a lower two-thirds of a full speed range, and the second motor is an induction motor providing the upper one-third in the form of one or more discrete fixed speeds. The system may include a transformer including a first winding tap which provides a first higher speed, and a second winding tap which provides a second higher speed. The system may also include a flow control system for automatically controlling the speed of the motors for particular applications, such as flow control in a pool.Type: ApplicationFiled: October 23, 2020Publication date: April 29, 2021Applicant: Nidec Motor CorporationInventors: John G. Schrader, Eric Coupart, Ryan M. Bastien, Richard A. Belley
-
Publication number: 20210123441Abstract: A dual motor system includes a first motor providing a lower speed range and a second motor providing a higher speed range, wherein the motors are coaxially arranged and aligned on and drive a common shaft, and a motor control system controlling the speed of the first motor and engaging the second motor as needed. The first motor is a variable speed motor providing a lower two-thirds of a full speed range, and the second motor is an induction motor providing the upper one-third in the form of one or more discrete fixed speeds. The system may include a transformer including a first winding tap which provides a first higher speed, and a second winding tap which provides a second higher speed. The system may also include a flow control system for automatically controlling the speed of the motors for particular applications, such as flow control in a pool.Type: ApplicationFiled: October 23, 2020Publication date: April 29, 2021Applicant: Nidec Motor CorporationInventors: Eric Coupart, James D. Ellis, II, Pranesh Rao, Bret S. Clark, John G. Schrader
-
Publication number: 20200067441Abstract: Method for controlling the speed of rotation of an electric motor by means of a variable speed drive supplied with power by a mains electrical power supply, in which method in a variable speed mode of operation the motor is supplied with power by the variable speed drive and in a fixed speed mode of operation the motor is supplied with power directly by the mains supply, and in which method before the changeover from the supply of power by the variable speed drive to the direct supply of power by the mains supply, the motor is first accelerated by the variable speed drive, the variable speed drive operating beyond its nominal current during the acceleration preceding the changeover.Type: ApplicationFiled: December 6, 2017Publication date: February 27, 2020Inventors: Eric Coupart, Christian Andrieux, Michael McClelland
-
Patent number: 10293847Abstract: A drive device for a handling trolley, including: a chassis; a wheel carrier; a drive wheel; a steering motor for rotating the wheel carrier relative to the chassis; a reduction gear connecting the steering motor to the wheel carrier, the reduction gear including a planetary gear set including an internal sun gear, at least one planet gear, and a planet carrier on which the planet gear is mounted, a ring gear surrounding the internal sun gear and the planet gear. The shaft of the steering motor is fixed relative to the internal sun gear, the wheel carrier is fixed relative to either the planet carrier or the ring gear, and the chassis is fixed relative to the other one of the two components.Type: GrantFiled: November 30, 2015Date of Patent: May 21, 2019Assignee: MOTEURS LEROY-SOMERInventors: Didier Calmettes, Eric Coupart, Françis Sourisseau, Ago-Tchalim Pato
-
Publication number: 20180154928Abstract: A drive device for a handling trolley, including: a chassis; a wheel carrier; a drive wheel; a steering motor for rotating the wheel carrier relative to the chassis; a reduction gear connecting the steering motor to the wheel carrier, the reduction gear including a planetary gear set including an internal sun gear, at least one planet gear, and a planet carrier on which the planet gear is mounted, a ring gear surrounding the internal sun gear and the planet gear. The shaft of the steering motor is fixed relative to the internal sun gear, the wheel carrier is fixed relative to either the planet carrier or the ring gear, and the chassis is fixed relative to the other one of the two components.Type: ApplicationFiled: November 30, 2015Publication date: June 7, 2018Applicant: MOTEURS LEROY-SOMERInventors: Didier CALMETTES, Eric COUPART, Françis SOURISSEAU, Ago-Tchalim PATO
-
Patent number: 9727060Abstract: Motorized system for holding and driving at least one solar energy collector, said system including: a supporting structure for the panel, movable at least in part in relation to the ground, so as to allow controlled displacement of the collector, notably about at least two axes of rotation, at least one blocking member, fixed in relation to the ground, at least one coupling member, movable with the collector and adapted to cooperate with the blocking element in at least one locking position of the collector, in order to hold the collector in the event of extreme winds, the coupling member being able to be moved into the locking position or locking positions as a result of a predefined movement of the collector, from a usual operating position where the coupling member is remote from the blocking member.Type: GrantFiled: February 17, 2015Date of Patent: August 8, 2017Assignee: MOTEURS LEROY-SOMERInventor: Eric Coupart
-
Publication number: 20150234389Abstract: Motorized system for holding and driving at least one solar energy collector, said system including: a supporting structure for the panel, movable at least in part in relation to the ground, so as to allow controlled displacement of the collector, notably about at least two axes of rotation, at least one blocking member, fixed in relation to the ground, at least one coupling member, movable with the collector and adapted to cooperate with the blocking element in at least one locking position of the collector, in order to hold the collector in the event of extreme winds, the coupling member being able to be moved into the locking position or locking positions as a result of a predefined movement of the collector, from a usual operating position where the coupling member is remote from the blocking member.Type: ApplicationFiled: February 17, 2015Publication date: August 20, 2015Inventor: Eric COUPART
-
Publication number: 20110316468Abstract: A rotating electrical machine to be connected to a polyphase power grid, having: a polyphase synchronous motor including a rotor with permanent magnets and a polyphase asynchronous motor axially coupled together, and a switching system arranged so as to electrically connect the asynchronous motor to the grid during the machine starting phase in order to bring the synchronous motor to a speed that enables the motor to operate while connected directly to the grid, and to electrically connect the synchronous motor to the grid during a subsequent phase.Type: ApplicationFiled: October 22, 2009Publication date: December 29, 2011Applicant: MOTEURS LEROY-SOMERInventors: Ali Makki, Eric Coupart
-
Patent number: 7692354Abstract: The present invention relates to a rotary electric machine comprising: a concentrated winding stator having teeth and coils placed on the teeth, the teeth having end faces that are convex towards the rotor; and a rotor comprising an armature defining a cylindrical surface and permanent magnets, the permanent magnets having inside faces that are cylinder portions matching the shape of the cylindrical surface of the armature, and outside faces that are plane and that face towards the stator.Type: GrantFiled: November 8, 2006Date of Patent: April 6, 2010Assignee: Moteurs Leroy-SomerInventors: Atef Abou-Akar, Eric Coupart
-
Patent number: 7538462Abstract: An electrical machine may include a rotor, a stator, and at least one electromagnetic brake including at least one brake disk. The rotor may include a monolithic shaft, which may include: at least one pulley-forming portion including at least one annular groove for driving at least one cable, and at least one splined portion in which the at least one brake disk is engaged. An outside diameter of the pulley-forming portion may be at least three times an outside diameter of the splined portion.Type: GrantFiled: August 31, 2006Date of Patent: May 26, 2009Assignee: Moteurs Leroy-SomerInventor: Eric Coupart
-
Patent number: 7250702Abstract: The invention relates to an electric machine comprising a stator (10, 40) provided with a plurality of teeth (11, 41), each tooth supporting at lest one individual coil (13, 46, 47), an external rotor (30) which is radially arranged outside the stator and provided with constant magnets, an internal rotor (20) radially arranged inside the stator, provided with constant magnets and connected to the external rotor (30). At least one of the external (30) and internal (20) rotors is disposed in a flux concentration.Type: GrantFiled: March 5, 2004Date of Patent: July 31, 2007Assignee: Moteurs Leroy-SomerInventors: Atef Abou Akar, Eric Coupart, Jacques Saint-Michel
-
Publication number: 20070132324Abstract: The present invention relates to a rotary electric machine comprising: a stator; a rotor having an axis of rotation, and comprising a tubular end wall defining two opposite braking surfaces; and at least one electromagnetic brake configured for bear simultaneously in a braking configuration against the braking surfaces.Type: ApplicationFiled: December 4, 2006Publication date: June 14, 2007Applicant: MOTEURS LEROY-SOMERInventor: Eric Coupart
-
Publication number: 20070126308Abstract: The present invention relates to a rotary electric machine comprising: a concentrated winding stator having teeth and coils placed on the teeth, the teeth having end faces that are convex towards the rotor; and a rotor comprising an armature defining a cylindrical surface and permanent magnets, the permanent magnets having inside faces that are cylinder portions matching the shape of the cylindrical surface of the armature, and outside faces that are plane and that face towards the stator.Type: ApplicationFiled: November 8, 2006Publication date: June 7, 2007Applicant: MOTEURS LEROY-SOMERInventors: Atef Abou-Akar, Eric Coupart
-
Publication number: 20070052308Abstract: An electrical machine may include a rotor, a stator, and at least one electromagnetic brake including at least one brake disk. The rotor may include a monolithic shaft, which may include: at least one pulley-forming portion including at least one annular groove for driving at least one cable, and at least one splined portion in which the at least one brake disk is engaged. An outside diameter of the pulley-forming portion may be at least three times an outside diameter of the splined portion.Type: ApplicationFiled: August 31, 2006Publication date: March 8, 2007Applicant: MOUTEURS LEROY SOMERInventor: Eric Coupart
-
Publication number: 20060175923Abstract: The invention relates to an electric machine comprising a stator (10, 40) provided with a plurality of teeth (11, 41), each tooth supporting at lest one individual coil (13, 46, 47), an external rotor (30) which is radially arranged outside the stator and provided with constant magnets, an internal rotor (20) radially arranged inside the stator, provided with constant magnets and connected to the external rotor (30). At least one of the external (30) and internal (20) rotors is disposed in a flux concentration.Type: ApplicationFiled: March 5, 2004Publication date: August 10, 2006Inventors: Atef Abou Akar, Eric Coupart, Jacques Saint-Michel