Alberto A Franco

US Patent:

6481090, Nov 19, 2002

Filed:

Jun 25, 2001

Appl. No.:

09/891073

Inventors:

Alberto Franco - Hazlet NJ
Spyro Pappas - Fort Lee NJ
Michael Gheorghiu - Forest Hills NY
Michael J. Lubas - Basking Ridge NJ

Assignee:

Electric Boat Corporation - Groton CT

International Classification:

H02K 1502

US Classification:

29598, 29596

Abstract:

In the embodiments described in the specification, a permanent magnet machine has a stator assembly containing a circular array of stator windings and a rotor assembly containing passages for permanent magnets and supported for rotation within the stator windings. The rotor assembly contains dummy magnet blocks in each passage during assembly of the rotor assembly in the stator assembly and a loading fixture containing energized permanent magnets is aligned with each passage in succession into which it supplies a row of permanent magnets while the dummy magnet blocks are removed by a retrieving fixture at the opposite end of the passage. After the permanent magnets have been inserted an end cover is mounted at each end of the passage to hold the energized permanent magnets in position.

US Patent:

6750628, Jun 15, 2004

Filed:

Dec 3, 2001

Appl. No.:

10/006946

Inventors:

Alberto Franco - Hazlet NJ
John McGarvey - Laurence Harbor NJ
Daniel Kane - Edison NJ
Michael Salata - Fords NJ

Assignee:

Electric Boat Corporation - Groton CT

International Classification:

H02P 736

US Classification:

318727

Abstract:

In the embodiments described in the specification, a permanent magnet machine includes a stator having windings which intercept flux received from peripheral pole pieces in a rotor generated by permanent magnets disposed between the pole pieces. In order to control the flux passing through the stator windings, flux shunts are provided between the pole pieces and a winding on the core of each flux shunt generates flux in the shunt in proportion to current supplied to the winding so as to decrease the flux from the magnets which can be diverted from the pole pieces through the shunt. Current is supplied to the flux shunt windings in accordance with the instantaneous difference between the wave shape of the output from the machine and a desired wave shape stored in a control unit. An encoder supplies a signal to the control unit indicating the instantaneous position of the rotor with respect to the stator.

US Patent:

20060255679, Nov 16, 2006

Filed:

Jan 9, 2006

Appl. No.:

11/327378

Inventors:

Pieter Dine - Mystil CT, US
Spyro Pappas - Fort Lee NJ, US
Mihai Georghiu - Boynton Beach FL, US
Daniel Kane - Pawcatuck CT, US
Vladimir Odessky - Trenton NJ, US
Michael Salata - Pawcatuck CT, US
Robert Forney - Stonington CT, US
Alberto Franco - Salem CT, US
Michael Quadrini - Brunswick ME, US

International Classification:

H02K 1/27

US Classification:

310156550, 310156190

Abstract:

An embodiment generally relates to a permanent magnet rotor arrangement. The arrangement includes a rotor having a plurality of apertures, a plurality of pole pieces, a plurality of wedges, and a plurality of permanent magnets. Each magnet is held substantially secure against the rotor by a two pole pieces of the plurality of pole pieces and an associated wedge from the plurality of wedges. Each pole piece is connected to the rotor by a fastener pulled through an associated aperture.