Patents by Inventor Peter P. Mongeau

Peter P. Mongeau 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: 20170085144
    Abstract: An apparatus and method for the installation and removal of permanent magnets in a permanent magnet electromechanical machine, for example a wind turbine power unit generator. A magnet holder is mounted on a magnet carrying structure such as a rotor. Permanent magnets may be inserted into and removed from the magnet holder after the electromechanical machine is assembled. The magnet holders define passages for airflow between the inside top and magnet surface. In this manner, permanent magnets may be installed on the magnet carrying structure and provided with additional cooling via said passages. Further, the holders may be configured to secure the magnets by an interference fit, without using bolts or adhesives, to facilitate both assembly and removal for maintenance and repair.
    Type: Application
    Filed: December 2, 2016
    Publication date: March 23, 2017
    Inventors: Jonathan A. Lynch, Mark S. Piercey, Peter P. Mongeau
  • Patent number: 9515529
    Abstract: An apparatus and method for the installation and removal of permanent magnets in a permanent magnet electromechanical machine, for example a wind turbine power unit generator. A magnet holder is mounted on a magnet carrying structure such as a rotor. Permanent magnets may be inserted into and removed from the magnet holder after the electromechanical machine is assembled. The magnet holders define passages for airflow between the inside top and magnet surface. In this manner, permanent magnets may be installed on the magnet carrying structure and provided with additional cooling via said passages. Further, the holders may be configured to secure the magnets by an interference fit, without using bolts or adhesives, to facilitate both assembly and removal for maintenance and repair.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 6, 2016
    Assignee: Northern Power Systems, Inc.
    Inventors: Jonathan A. Lynch, Mark S. Piercey, Peter P. Mongeau
  • Patent number: 8664819
    Abstract: An apparatus and method for the installation and removal of permanent magnets in a permanent magnet electromechanical machine, for example a wind turbine power unit generator. A magnet holder is mounted on a magnet carrying structure such as a rotor. Permanent magnets may be inserted into and removed from the magnet holder after the electromechanical machine is assembled. In this manner, permanent magnets may be installed on the magnet carrying structure by an interference fit, without using bolts or adhesives, to facilitate both assembly and removal for maintenance and repair.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: March 4, 2014
    Assignee: Northern Power Systems Utility Scale, Inc.
    Inventors: Mark S. Piercey, Peter P. Mongeau, Jonathan A. Lynch, Thomas D. Kohler, Paul A. Smith
  • Patent number: 7990015
    Abstract: Attachments are removably coupled to the magnetic core of a rotating electric machine, the magnetic core being shaped to include a plurality of coil-receiving slots that are separated by radial teeth. Each attachment is constructed as a unitary member and includes a base and a stem, the stem being dimensioned for fitted insertion within a recess formed in the distal end of a corresponding tooth. The base includes a convex bottom wall, a flattened top wall and a pair of non-planar sidewalls. The stem is integrally formed on the top wall of the base and includes a front end, a rear end, a flattened top wall and a pair of opposing sidewalls. A longitudinal groove is formed into each of the pair of opposing sidewalls of the stem. An outwardly protruding shoulder designed for engagement by a retention plate is formed into the front and rear ends of the stem.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: August 2, 2011
    Assignee: Vestas Wind Systems A/S
    Inventors: Peter P. Mongeau, Mark S. Piercey, William R. Wink
  • Publication number: 20110043065
    Abstract: An apparatus and method for the installation and removal of permanent magnets in a permanent magnet electromechanical machine, for example a wind turbine power unit generator. A magnet holder is mounted on a magnet carrying structure such as a rotor. Permanent magnets may be inserted into and removed from the magnet holder after the electromechanical machine is assembled. In this manner, permanent magnets may be installed on the magnet carrying structure by an interference fit, without using bolts or adhesives, to facilitate both assembly and removal for maintenance and repair.
    Type: Application
    Filed: August 18, 2009
    Publication date: February 24, 2011
    Applicant: NORTHERN POWER SYSTEMS, INC.
    Inventors: Mark S. Piercey, Peter P. Mongeau, Jonathan A. Lynch, Thomas D. Kohler, Paul A. Smith
  • Publication number: 20090026875
    Abstract: Attachments are removably coupled to the magnetic core of a rotating electric machine, the magnetic core being shaped to include a plurality of coil-receiving slots that are separated by radial teeth. Each attachment is constructed as a unitary member and includes a base and a stem, the stem being dimensioned for fitted insertion within a recess formed in the distal end of a corresponding tooth. The base includes a convex bottom wall, a flattened top wall and a pair of non-planar sidewalls. The stem is integrally formed on the top wall of the base and includes a front end, a rear end, a flattened top wall and a pair of opposing sidewalls. A longitudinal groove is formed into each of the pair of opposing sidewalls of the stem. An outwardly protruding shoulder designed for engagement by a retention plate is formed into the front and rear ends of the stem.
    Type: Application
    Filed: April 7, 2008
    Publication date: January 29, 2009
    Inventors: Peter P. Mongeau, Mark S. Piercey, William R. Wink
  • Patent number: 5831365
    Abstract: A magnet carrier assembly for holding and carrying a high-energy-product permanent magnet is arranged for releasable attachment to a rotor of an axial disc or drum type rotor in an electric machine. The permanent magnet placed in a container which then receives a cover. The magnet carrier assembly includes a mounting flange at one end and a locating and mounting tab at an opposite end for attaching the assembly to the rotor. In certain applications, the rotor has recesses which have a size and shape complementary to the size and shape of the magnet carrier assembly. The recesses are circumaxially located around the radial periphery of the rotor at the poles of the rotor. In other embodiments, the magnet carrier assembly includes a key which is received in a mating groove in a rotor surface and is used to transfer to the rotor the electromagnetic shear force developed by the high-energy-product permanent magnet.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: November 3, 1998
    Assignee: Kaman Electromagnetics Corporation
    Inventors: Thomas A. Keim, Peter P. Mongeau, Thomas Dade
  • Patent number: 5691589
    Abstract: A magnet carrier assembly for holding and carrying a high-energy-product permanent magnet is arranged for releasable attachment to a rotor of an axial disc or drum type rotor in an electric machine. The permanent magnet placed in a container which then receives a cover. The magnet carrier assembly includes a mounting flange at one end and a locating and mounting tab at an opposite end for attaching the assembly to the rotor. In certain applications, the rotor has recesses which have a size and shape complementary to the size and shape of the magnet carrier assembly. The recesses are circumaxially located around the radial periphery of the rotor at the poles of the rotor. In other embodiments, the magnet carrier assembly includes a key which is received in a mating groove in a rotor surface and is used to transfer to the rotor the electromagnetic shear force developed by the high-energy-product permanent magnet.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: November 25, 1997
    Assignees: Kaman Electromagnetics Corporation, Newport News Shipbuilding and Dry Dock Company
    Inventors: Thomas A. Keim, Peter P. Mongeau, Thomas Dade
  • Patent number: 5428522
    Abstract: A four quadrant unipolar pulse width modulated (PWM) power conversion circuit for supplying a desired current to an inductive load uses an H-bridge circuit topology with an upper and lower pair of switching elements including a diode in parallel with each of the switching elements to provide a current path from the load to the power source when its respective switching element is non-conductive. A control algorithm generates switching element control signals to cause the instantaneous voltage across the load to alternate between a single polarity voltage and zero for a portion of the output load waveform to cause the average value of the load current to correspond generally with the desired average load current.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: June 27, 1995
    Assignee: Kaman Electromagnetics Corporation
    Inventors: Alan Millner, Peter P. Mongeau, Zaher Daboussi
  • Patent number: 5229677
    Abstract: An improved electric propulsion motor for marine vehicles. The motor has an axial gap design with a disk-shaped rotor and two disk-shaped stators. Within the large, open diameter of the motor a sound isolation coupling is disposed between two annular plates that connect the rotor to the propeller shaft. Circumferential thrust bearings counter and distribute electrical and mechanical forces in the motor to maintain the position of the rotor relative to the stators. A journal bearing supports the rotor. Noise reduction is greatly enhanced by the implementation of staggered stators, skewed stator slots, skewed field poles and a current control system that compensates for torque pertubations that are a repeatable function of shaft angle.
    Type: Grant
    Filed: September 18, 1991
    Date of Patent: July 20, 1993
    Assignee: Newport News Shipbuilding and Dry Dock Company
    Inventors: Thomas B. Dade, Kenneth W. Leiding, Peter P. Mongeau, Mark S. Piercey
  • Patent number: 5223775
    Abstract: An input control current command signal is modified in accordance with a number of compensation factors stored in a memory and corresponding to each of a number of angular shaft positions to provide a control signal to cause an inverter to drive each of the number of phases of a permanent magnet axial-field motor to cause the motor to produce a ripple-free torque output. The compensation values stored in the memory are identified and determined in accordance with the source of the torque ripple such as vibration, load operation, noise and variations within the motor construction.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: June 29, 1993
    Assignee: EML Research, Inc.
    Inventor: Peter P. Mongeau
  • Patent number: 5199912
    Abstract: An electric power system for large marine vehicles in which one or more AC generators are shared as the ship's propulsion power source and the ship's electrical service power source. The voltage from the AC generator(s) is rectified to a reduced DC voltage such that voltage transients in the propulsor motor do not reflect into the ship service power system. Silicon controlled rectifier (SCR) bridges are utilized to convert the generator's AC voltage into a reduced DC voltage. As a supplement for emergency power, a rechargeable battery is included to provide power for propulsion and ship service.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: April 6, 1993
    Assignee: Newport News Shipbuilding and Dry Dock Company
    Inventors: Thomas B. Dade, Kenneth W. Leiding, Peter P. Mongeau
  • Patent number: 4691133
    Abstract: A rotary electrical machine having one or more rotor elements comprising non-magnetic conductors extending outwardly from the drive shaft axis and electrically coupled together at terminal portions, a device for producing excitation current through the rotor elements, and one or more stator elements, interleaved between the rotor elements, including elongated, non-magnetic electrical conductors extending outwardly with respect to the longitudinal axis of the drive shaft.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: September 1, 1987
    Assignee: Electromagnetic Launch Research, Inc.
    Inventor: Peter P. Mongeau