Gm Global Technolgoy Operations, Inc.

Delphi Technologies, Inc.

Beijingwest Industries Co., Ltd.

Bwi Company Limited S.a.

Other

Steering Solutions IP Holding Corporation

Thomas W Nehl

Chandra S Namuduri

Lei Hao

Alireza Fatemi

Suresh Gopalakrishnan

Avoki M Omekanda

Michael G Reynolds

Alexandru Rajala

Norman K Bucknor

Farzad Samie

Rashmi Prasad

Malakondaiah Naidu

Alan G Holmes

Anthony M Coppola

Madhusudan Raghavan

Thaddeus Schroeder

Venkata Prasad Atluri

Rassem Ragheb Henry

Fang Deng

Anil Kumar Sachdev

Derek F Lahr

Shifang Li

David J Brooks

Chunhao J Lee

Dongxu Li

Kenneth J Shoemaker

Robert S Conell

Robert Thomas Foister

Bob R Powell

Xiaofeng Yang

Alexander Apostolos Alexandridis

Rajeev Vyas

Peng Peng

Janusz Pawel Goldasz

Murali Pandi

Nady Boules

James J Abramczyk

Nilesh D Mankame

Yue-Yun Wang

William Charles Kruckemeyer

Jian Yao

Muhammad Hussain Alvi

Chih-Hung Yen

Neeraj S Shidore

Donald T Morelli

SeungHwan Keum

John Robert Smith

Andrew K Chandler

Shaotang Chen

Bruno P B Lequesne

Brian K Fuller

Mazharul Chowdhury

Zbigniew Szklarz

Bruno Patrice Bernard

Gokhan Cakal

Nancy L Johnson

Paul W Alexander

Joseph V Mantese

Paul Edward Krajewski

Shawn Harold Swales

William C Lin

Edward L Kaiser

Taeyoung Han

Thomas Arthur Perry

Chengwu Duan

Anthony L Smith

Michael J Karagoulis

Mohammad S Islam

Huaxin Li

Joseph Pierre Heremans

Yiran Hu

Raul Armando Bircann

Yilun Luo

Thomas Hubert Van Steenkiste

Roy J Mathieu

Dwight Orman Palmer

Lateef A Kajouke

Thomas Allen Baudendistel

Mark A Voss

Azeem Sarwar

Brian K Saylor

David W Walters

Junghoon Kim

Yusheng Zou

Paul S Lombardo

Khorshed Mohammed Alam

Ronald O Grover, Jr

Renato Amorim Torres

Bruno Lequesne

Bruno Patrice Bernard Lequesne

Tito R Huffman

Mohammad Faizul Momen

Benjamin R Christian

Xiaohui Du

Noreen Louise Mastro

Olivier Valee

David T Stark

Srihari K Gangaraj

Peter Beller

Denghao Fan

A rotor for rotatably mounting on a rotational axis in an axial flux electric motor includes a permanent magnet (PM) disc having a continuous Halbach magnetization profile. The axial flux electric motor also includes a rotationally fixed stator having a plurality of conductive stator magnetic poles arranged radially about the rotational axis. The rotor is spaced axially from one side of the stator. A motor vehicle employing the subject axial flux electric motor is also contemplated.

Axial flux electric machine rotor with continuous Halbach array magnets

An electric machine with reconfigurable rotor poles. The machine may include a stator including a plurality of stator windings configured for generating a rotating magnetic field (RMF) and a rotor configured for rotating within the stator according to a torque induced by the RMF. The rotor may include a plurality of rotor windings wrapped around a plurality of circumferentially spaced rotor protrusions. The electric machine may include a rotor power transfer circuit operable for reconfiguring electrical excitation of the rotor windings according to a plurality of excitation modes.

Electric machine with reconfigurable rotor poles

A vehicle's electrified powertrain includes a battery pack linked to a traction power inverter module (TPIM) converting DC voltage from the battery pack into AC voltage. A rotary electric machine includes a stator energized by the TPIM's AC voltage, enclosing a rotor core capable of rotation. The rotor core contains slots holding conductive bars and permanent magnets, with conductive bars positioned closer to the rotor core's center. The conductive bars and permanent magnets are separated by gaps within each slot. An annular end ring assembly is present at one end of the rotor core, featuring terminal conductors connected to subsets of conductive bars and a secondary coil of a rotary transformer. When the stator is energized, the rotor shaft, connected to the rotor, rotates. The electric machine powers a transmission, which is coupled to the rotor shaft.

Hybrid excited rotary machine

Embodiments include an electric motor having asymmetric-turn windings and a vehicle including the same. The electric motor includes a rotor and a stator having a first set of windings having a first number of turns and a second set of windings having a second number of turns that is different than the first number of turns. The first set of windings are galvanically isolated from the second set of windings.

Electric motor with asymmetric-turn windings and a vehicle having the same

An electric machine includes a stator, a rotor configured to rotate relative to the stator, an air gap between the stator and the rotor, and a conductive winding disposed in the rotor or the stator. The conductive winding includes a first portion having a first conductivity and a second portion having a second conductivity, the second portion disposed radially between the first portion and the air gap, the first conductivity being different than the second conductivity.

Multi-conductivity windings for electric machines

An electric propulsion motor system includes a cylindrical stator and rotor, a fluid circulation system providing pressurized fluid, and conductors within winding slots. The stator has a yoke and a plurality of teeth extending radially inward from the yoke, with winding slots defined between adjacent teeth. Respective tooth tips extend circumferentially into adjacent winding slots and are radially adjacent to a first conductor within the winding slot, with a first channel through which pressurized fluid flows.

Motor with stator tooth tip cooling

A current sensing apparatus may include a common mode core surrounding two or more current conductors and a current sensing element proximate the common mode core.

Current sensing apparatus

A motor stator includes a stator core having a plurality of stator teeth on an inner diameter thereof and defining a respective plurality of slots between the plurality of stator teeth. A plurality of windings are disposed in the slots. A heat pipe network includes a plurality of evaporator portions including a hollow structure disposed in at least a portion of the plurality of slots and including an interior having a wick extending along the interior of the hollow structure. A condenser portion has an interior portion in communication with the plurality of evaporator portions and is located at an end of the stator core. The wick of each of the plurality of evaporator portions extend into the condenser portion.

Stator assembly of an electric motor with retrofitted heat pipes

A vehicle, suspension system and method of dampening a force on the suspension system is disclosed. The suspension system includes a damper having a first damping element and a second damping element configured to rotate relative to each other in response to a force received at the suspension system. The second damping element induces an eddy current in the first damping element during relative rotation. A feature of one at least one of the first damping element and the second damping element provides a first electrical resistance to the eddy current during relative rotation in a first direction and a second electrical resistance to the eddy current during relative rotation in a second direction. The first electrical resistance generates a first damping force and the second electrical resistance generates a second damping force.

Eddy current damper with asymmetrical forces

A rotor for an electric machine includes strengthened structural elements effected through surface alloying and heating via an induction heating fixture. A rotor includes laminations formed to have internal cavities and structural members adjacent the cavities. A number of the laminations are stacked to form a lamination stack. An alloying material is applied to the lamination stack at the structural members. The lamination stack is placed in a fixture so that an inductor extends along the structural members and cooling elements extend through the cavities. A current is applied to the inductor to heat the structural members, alloying the alloying material into the structural members.

Method of making a rotor for an electric machine and system thereof

A charging system includes a scalable power source for powering a motor of a vehicle and telematics and battery management modules. The scalable power source includes: N battery packs, where N is an integer greater than or equal to 3; and multiple switches connected to the N battery packs including N−1 switches for serially connecting the N battery packs between supply and return lines and a multiple of N switches for parallel connecting the N battery packs to the supply and return lines. The telematics module requests capability of a charging station and receives a response signal from a device indicating the capability of the charging station. The battery management module: based on the capability of the charging station, selects one of the available arrangements in which to connect the N battery packs, sets states of the multiple switches; and then charges the N battery packs based on the states.

Propulsion systems with power sources compatible with different charging stations and dynamically scalable for different vehicle speed and torque modes

A rotor for an electric machine includes a heat pipe cooling system. A rotor core has a number of cavities internal to the rotor core. The cavities are surrounded by a wall defined by the rotor core. A magnetic element disposed in the at least one cavity leaving a void in the at least one cavity between the magnetic element and the wall. A heat pipe evaporator is disposed in the void and conforms to the available space, contacting the magnetic element and the wall to remove heat from the rotor core.

Electric motor rotor with conformal heat pipes

A bi-material permanent magnet for an electric machine includes a core including a first magnetic material and a shell portion located on the core and made of a second magnetic material. The first magnetic material comprises a magnet material with an energy less than 20 Mega Gauss Oersteds (MGOe). The second magnetic material comprises a magnet material with an energy greater than 30 MGOe.

Bi-material permanent magnets for electric machines

An electric machine includes a housing, a rotor rotatably mounted to the housing, and a stator mounted to the housing about the rotor. The stator includes a stator body formed from a plurality of laminations. The plurality of laminations include an outer annular surface defining a radius, an inner annular surface spaced from the rotor, and a plurality of radially inwardly extending stator teeth spaced one from another by plurality of gaps. Each of the plurality of gaps extend along the radius and include an opening exposed at the inner annular surface. The opening has a first side portion and a second side portion each extending at an angle relative to the radius.

Electric machine including a stator having a tooth profile that reduces parasitic voltage

A method of controlling an electric motor of a vehicle includes monitoring torque command signals from a vehicle system to the electric motor, each torque command signal configured to cause the electric motor to output a commanded torque, and monitoring a speed of the vehicle and an output torque of the electric motor, the output torque responsive to a drive signal generated based on the torque command signals. The method also includes, based on the output torque and the vehicle speed indicating a low motor efficiency condition, modulating the drive signal between a first torque value and a second torque value that is less than the first torque value, the first torque value greater than the commanded torque and selected to increase an efficiency of the electric motor.

Electric motor control

Growing community of inventors

Shelby Township, MI, United States of America

Thomas W Nehl