公开(公告)号：EP1552598A2

公开(公告)日：2005-07-13

申请号：EP03731389.7

申请日：2003-05-27

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： RAMU, Krishnan

IPC: H02P1/46 ,  H02P1/18 ,  H02P7/00 ,  H02P1/04

CPC classification number: H02K19/103 ,  H02K1/24 ,  H02K7/09 ,  H02K16/00 ,  H02K16/04 ,  H02K17/00 ,  H02K21/12 ,  H02M2001/009 ,  H02M2003/1552 ,  H02M2003/1555 ,  H02P1/163 ,  H02P1/18 ,  H02P6/21 ,  H02P25/034 ,  H02P25/089 ,  H02P25/092 ,  H02P2201/09

Abstract: A power converter (500) for a switched reluctance motor or a permanent magnet brushless direct current (dc) motor including first and second partial circuits (553, 554) for forming multiple conduction circuits in cooperation with first and second phase windings (505, 508) of the motor. The contoller (704) also includes a switch (555) operable to open and close a first conduction circuit, which includes the first phase winding (551), and to regulate energization of the first and second phase windings of the motor through opening and closing the first conduction circuit. Control of the switch (555) provides four-quadrant operation of the motor through regulated energization of the first and second phase windings (551, 552).

公开(公告)号：EP1532724A1

公开(公告)日：2005-05-25

申请号：EP03755502.6

申请日：2003-05-27

Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

Inventor： RAMU, Krishnan ,  STALEY, Amanda, Martin

IPC: H02K17/00 ,  H02K17/42

CPC classification number: H02K19/103 ,  H02K1/24 ,  H02K7/09 ,  H02K16/00 ,  H02K16/04 ,  H02K17/00 ,  H02K21/12 ,  H02M2001/009 ,  H02M2003/1552 ,  H02M2003/1555 ,  H02P1/163 ,  H02P1/18 ,  H02P6/21 ,  H02P25/034 ,  H02P25/089 ,  H02P25/092 ,  H02P2201/09

Abstract: A two-phase switched reluctance motor (fig.4) with a pluraty of rotor poles (404) having asymmetric reluctance (405) about a central raidla axis of the respective rotor pole and a plurality of salient stator poles (402) having the same width as the rotor poles.

公开(公告)号：EP1552599A1

公开(公告)日：2005-07-13

申请号：EP03731388.9

申请日：2003-05-27

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： RAMU, Krishnan

IPC: H02P5/00 ,  H02P5/28 ,  H02P7/36 ,  H02P5/06 ,  G05F1/70

CPC classification number: H02K19/103 ,  H02K1/24 ,  H02K7/09 ,  H02K16/00 ,  H02K16/04 ,  H02K17/00 ,  H02K21/12 ,  H02M2001/009 ,  H02M2003/1552 ,  H02M2003/1555 ,  H02P1/163 ,  H02P1/18 ,  H02P6/21 ,  H02P25/034 ,  H02P25/089 ,  H02P25/092 ,  H02P2201/09

Abstract: A power converter for a switched reluctance motor (SRM) or a permanent magnet brushless direct current (dc) motor (PMBDCM) that includes a front-end boost partial circuit (551) for connecting with a first phase winding of the motor (552) to form a front-end boost circuit (553) and a back-end boost partial circuit (554) for connecting with a second phase winding of the motor (555) to form a back-end boost circuit (554). The front-end boost partial circuit (551) generates a first step-up voltage in cooperation with the inductance provided by the first phase winding (552). The back-end boost partial circuit (554) generates a second step-up voltage in cooperation with the inductance provided by the second phase winding (555).

公开(公告)号：EP1404540A2

公开(公告)日：2004-04-07

申请号：EP02741889.6

申请日：2002-06-06

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： RAMU, Krishnan

IPC: B60L13/04

CPC classification number: H02P25/06 ,  B60L13/10 ,  B60L2200/26 ,  B60L2220/18 ,  H02K41/03 ,  H02N15/00 ,  H02P25/08

Abstract: A translation system, applicable in trains, elevators, aircraft launchers, rail guns, conveyors, door openers, machine tools and servo drivers, includes a first linear switch reluctance machine (LSRM)(100) having a stator (104) and a translator (102) each configured, positioned and proportioned for electromagnetic engagement with the other. The system further includes an assembly for selectable application of at least one phase of a multiphasic DC excitation to the LSRM (100) to produce a longitudinal or propulsive force between the stator (104) and translator (102). The system further includes an assembly for the substantially simultaneous application of at least two phases of the DC excitation to the LSRM (100) to produce a continual normal force between the stator (104) and the translator (102). A second LSRM (200) may be provided, positioned in quadrature to the first LSRM (100), and in electromagnetic engagement with it. A multi-phasic excitation of a stator and translator of the second LSRM (200) produces both a guidance force for the first LSRM (100) using error values generated by it and an additional propulsive force. Independent control of the phasic excitations for each of said propulsive, lift and guidance forces may be provided.