公开(公告)号：US20230179137A1

公开(公告)日：2023-06-08

申请号：US17457388

申请日：2021-12-02

Applicant: DANA TM4 ITALIA S.R.L.

Inventor： Walter FAEDO ,  Federico LOVATO

IPC: H02P29/028 ,  H02P27/08 ,  H02P29/024 ,  H02K3/12 ,  H02K3/28 ,  H02M7/493

CPC classification number: H02P29/028 ,  H02P27/08 ,  H02P29/027 ,  H02K3/12 ,  H02K3/28 ,  H02M7/493

Abstract: A method and system for operating an electric machine are described. In one example, the system includes a motor stator having a first group of windings and a second group of windings. Each group of the windings is electrically coupled to a different inverter so that the system may have a layer of operational redundancy.

公开(公告)号：US11133749B2

公开(公告)日：2021-09-28

申请号：US16497907

申请日：2018-03-27

Applicant: Dana TM4 Italia S.r.l.

Inventor： Adolfo Pace

IPC: H02M7/00 ,  H02M7/217 ,  H02M7/5387 ,  H02M1/088 ,  H02M7/537 ,  H02M1/00

Abstract: A power module for a converter of electrical magnitudes having an electronic board on which a first electrical circuit is fashioned which defines a positive pole of a direct magnitude, a second electrical circuit is fashioned which defines a negative pole of a direct magnitude, and a third electrical circuit is fashioned which conducts an alternating magnitude. There is one or more first and second electronic switching devices arranged between the first and second electrical circuit, and the third electrical circuit so as to realize the conversion. The first and second electrical circuit are, at least for respective coupling portions, arranged in proximity to the electronic switching devices, neared and superposed at a same face of the board so that a capacitive and/or inductive coupling between the two circuits is realized.

公开(公告)号：US20250030322A1

公开(公告)日：2025-01-23

申请号：US18356859

申请日：2023-07-21

Applicant: DANA TM4 ITALIA S.R.L.

Inventor： Walter FAEDO ,  Pierpaolo ZULPO

IPC: H02K15/03 ,  H02K15/12

Abstract: Methods and systems are disclosed for reducing ripple torque associated with internal bridges arranged within one or more barriers of a rotor lamination stack and increasing mechanical strength when the rotor lamination stack is configured without internal bridges. In one example, a rotor lamination stack includes at least one interlocking element arranged in one or more barriers. In another example, the at least one interlocking elements may be fabricated individually and independent of the rotor lamination stack or by employing the rotor lamination stack as a mold.

公开(公告)号：US11942887B2

公开(公告)日：2024-03-26

申请号：US17457388

申请日：2021-12-02

Applicant: DANA TM4 ITALIA S.R.L.

Inventor： Walter Faedo ,  Federico Lovato

IPC: H02P6/28 ,  H02K3/12 ,  H02K3/28 ,  H02M7/493 ,  H02P27/08 ,  H02P29/024 ,  H02P29/028

CPC classification number: H02P29/028 ,  H02K3/12 ,  H02K3/28 ,  H02M7/493 ,  H02P27/08 ,  H02P29/027

Abstract: A method and system for operating an electric machine are described. In one example, the system includes a motor stator having a first group of windings and a second group of windings. Each group of the windings is electrically coupled to a different inverter so that the system may have a layer of operational redundancy.

公开(公告)号：US11699929B2

公开(公告)日：2023-07-11

申请号：US16123777

申请日：2018-09-06

Applicant: DANA TM4 ITALIA S.R.L.

Inventor： Alberto Pace

IPC: H02K1/27 ,  H02K1/24 ,  H02K19/10 ,  H02K15/02 ,  H02K16/02 ,  H02K1/276 ,  H02K16/00

CPC classification number: H02K1/246 ,  H02K1/276 ,  H02K15/02 ,  H02K16/00 ,  H02K16/02 ,  H02K19/103 ,  H02K2213/12

Abstract: A process for assembling a rotor of a variable-reluctance synchronous motor, characterised in that it comprises the steps of:



i. preparing a plurality of discs having a through-cavity for each polar sector for housing at least a magnet;
ii. positioning the discs in sequence along an axis of rotation for forming the rotor, so that the through-cavities are aligned to one another;
iii. preparing magnets having an identical depth that is smaller than the depth of the rotor, and a frontal section that is identical to or smaller than the area of the cavity;
iv. calculating the number of magnets to be inserted, for each polar sector, in a sequence so as to occupy only part of the total depth of the rotor as a function of the performances to be obtained;
v. inserting the calculated number of magnets in a series of cavities aligned for each polar sector.




The invention also relates to a rotor of a variable-reluctance synchronous motor assembled using the process set out above.

公开(公告)号：US20240154548A1

公开(公告)日：2024-05-09

申请号：US18054047

申请日：2022-11-09

Applicant: DANA TM4 ITALIA S.R.L.

Inventor： Walter FAEDO ,  Riccardo BICEGO

IPC: H02P6/18 ,  H02K1/2781

CPC classification number: H02P6/18 ,  H02K1/2781 ,  H02K2201/03

Abstract: Methods and systems are disclosed for monitoring rotor flux linkage of a rotor via a monitoring mode and resetting rotor flux linkage of the rotor via a resetting mode. As one example, monitoring rotor flux linkage includes measuring rotor flux linkage generated by rotor magnets at an air gap of the motor continuously during run-time via a plurality of models and various system components. As another example, resetting rotor flux linkage includes ensuring motor movement ceases and injecting a positive pulse d-axis current for a plurality of motor pole pairs in response to rotor flux linkage not being within a pre-determined threshold. In this way, magnets with low remanent flux density and low coercivity may be utilized in various embodiments of electric motors, reducing design complexity of a rotor of an electric motor, and in turn, reducing production costs.