公开(公告)号：US11686789B2

公开(公告)日：2023-06-27

申请号：US17401233

申请日：2021-08-12

Applicant: HL MANDO CORPORATION

Inventor： Mazharul Chowdhury ,  Mohammad Islam ,  Christian Ross

IPC: G01R33/10 ,  B62D15/02 ,  G01D5/14

CPC classification number: G01R33/10 ,  B62D15/021 ,  G01D5/147

Abstract: Position sensors, including linear position sensors, that utilize magnetic field(s) are disclosed. Disclosed sensors include flux emitters and sensor assemblies. The sensor assemblies include flux collectors that interact with magnetic fields from flux emitters and with a magnetism sensing device. Flux emitters have arrangements of magnets that when combined with the sensor assembly can provide a constantly increasing or a constantly decreasing signal across a range of relative movement.

公开(公告)号：US11705766B2

公开(公告)日：2023-07-18

申请号：US17024652

申请日：2020-09-17

Applicant: HL MANDO CORPORATION

Inventor： Mazharul Chowdhury ,  Md Sariful Islam ,  Mohammad Islam ,  Abraham Tesfamicael

IPC: H02K1/27 ,  H02K1/16 ,  H02K1/276

CPC classification number: H02K1/276 ,  H02K1/165

Abstract: A permanent magnet motor comprises: a stator comprising teeth; and a rotor rotatable relative to the stator, the rotor having a plurality of poles, wherein each pole of the rotor comprises a pair of magnet retention slots, each magnet retention slot accommodating a magnet. Surfaces of the teeth of the stator facing the rotor are flat or have an arc shape. Each magnet retention slot may have a plurality of angled slot surfaces forming a first barrier around a corner of the magnet positioned closest to an outer surface of the rotor. At least three second barriers are positioned around a mid-axis extending along between the pair of the magnet retention slots. Each magnet retention slot comprises a slot surface slanted or curved relative to a second side surface of the magnet facing an inner surface of the rotor to form a third barrier around an end of the second side surface of the magnet.

公开(公告)号：US11988728B2

公开(公告)日：2024-05-21

申请号：US17401235

申请日：2021-08-12

Applicant: HL MANDO CORPORATION

Inventor： Mazharul Chowdhury ,  Mohammad Islam ,  Christian Ross

IPC: G01R33/10 ,  B62D15/02 ,  G01D5/14

CPC classification number: G01R33/10 ,  B62D15/021 ,  G01D5/147

Abstract: Position sensors, including linear position sensors, that utilize magnetic field(s) are disclosed. Disclosed sensors include flux emitters and sensor assemblies. The sensor assemblies include flux collectors that interact with magnetic fields from flux emitters and with a magnetism sensing device. Flux emitters have arrangements of magnets that when combined with the sensor assembly can provide a constantly increasing or a constantly decreasing signal across a range of relative movement.

公开(公告)号：US12132354B2

公开(公告)日：2024-10-29

申请号：US17061568

申请日：2020-10-01

Applicant: HL MANDO CORPORATION

Inventor： Mazharul Chowdhury ,  Md Sariful Islam ,  Mohammad Islam

IPC: H02K1/02 ,  H02K1/24 ,  H02K1/276 ,  H02K21/14 ,  H02K29/03

CPC classification number: H02K1/2766 ,  H02K1/02 ,  H02K1/246 ,  H02K21/14 ,  H02K29/03

Abstract: A rotor assembly of a motor is configured to be rotatable relative to a stator. The rotor assembly may comprise a permanent magnet rotor segment comprising permanent magnets, the permanent magnet rotor segment configured to be rotatable by a magnetic field generated by the permanent magnets; and a reluctance rotor segment comprising flux barriers, the reluctance rotor segment configured to be rotatable by magnetic reluctance formed by the flux barriers. The permanent magnet rotor segment and the reluctance rotor segment are axially stacked relative to each other so that at least a part of a first torque ripple generated by the permanent magnet rotor segment and at least a part of a second torque ripple generated by the reluctance rotor segment can cancel each other. The permanent magnet rotor segment may be a rare earth permanent magnet rotor, and the reluctance rotor segment may be a synchronous reluctance rotor.