Gm Global Technology Operations LLC

Magna Electronics Inc.

Dynalloy, Inc.

Lei Hao

Chandra S Namuduri

Suresh Gopalakrishnan

Thomas W Nehl

Yue-Yun Wang

Dongxu Li

Chunhao J Lee

Norman K Bucknor

Chengwu Duan

Rashmi Prasad

Xiujie Gao

Paul W Alexander

Alireza Fatemi

Alan L Browne

Sanjeev Manubhai Naik

Avoki M Omekanda

Neeraj S Shidore

Farzad Samie

Venkata Prasad Atluri

Alexandru Rajala

Wei Zeng

Bojian Cao

Muhammad Hussain Alvi

Murali Pandi

Nancy L Johnson

Madhusudan Raghavan

Jian Yao

Derek L Patterson

Mark A Voss

Jiyu Zhang

Shuonan Xu

Xiaofeng Yang

Peng Peng

Geoffrey P McKnight

Derek F Lahr

Guillermo A Herrera

James Holbrook Brown

Michael G Reynolds

Shifang Li

John Neal Owens

Balarama Vempaty Murty

Kevin B Rober

Kenneth J Shoemaker

Siddharth Ballal

Steven E Muldoon

Alexander Millerman

Aragorn Zolno

Paul S Lombardo

Andrew K Chandler

Xiaofeng Mao

Vinod Chowdary Peddi

Wesley G Zanardelli

Srihari K Gangaraj

Michael Harpster

Nilesh D Mankame

Qigui Wang

Brian James Koch

Christopher Paul Henry

John Stilianos Agapiou

Mutasim Abdurrahman Salman

Yilu Zhang

Hanho Yun

Richard J Skurkis

Yiran Hu

Scott E Parrish

Daniel J Wilson

Liang Wang

Satish P Ketkar

Yongjie Zhu

Jeffrey S Piasecki

Garrett M Seeman

Ruixing Long

Michael A Potter

Yusheng Zou

Junfeng Zhao

Venkatesh Gopalakrishnan

Rajeev Vyas

Zhen Gao

Daniel Robert Tylutki

Mohamed Ahmed Kamel Ahmed

Steven L Burkholder

Renato Amorim Torres

Jeremie Dernotte

Ke Dong

Minh-Khai Nguyen

Sharon Xiaobin Li

Mingyuan Zhang

Tony J Deschutter

Samantha Gunter Miller

Jeffrey R Aldrich

Mark C Hoinka

Siwei Cheng

Michael P Barker

Gionata Cimini

Mazharul Chowdhury

Michael C Zumbaugh

Zilai Zhao

Chad A Freitas

William Robert Jensen

Aaron M Sullivan

A power control system for a propulsion system of a vehicle includes an energy storage system including a precharge circuit and one or more battery packs. A DC-DC converter is connected to the energy storage system and including a first capacitor, a first plurality of power switches and an inductor. A power inverter module is connected to the DC-DC converter and including a second capacitor and a second plurality of power switches. A controller is configured to pre-charge the first capacitor of the DC-DC converter and the second capacitor of the power inverter module and control operating modes of the DC-DC converter and the power inverter module.

Power control system for DC-DC converter and inverter pre-charging and shutdown

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 vehicle includes a system performing a method of charging a battery of the electric vehicle. The system includes an electrical motor having a rotor and a plurality of windings. The vehicle is turned off to allow the rotor to come to rest at an initial rotor position. The processor controls a current through the motor to rotate the rotor to locate a boundary of an electrical lash region associated with the rotor, determines a selected winding of the plurality of windings having a phase vector located close to the electrical lash region, deactivates the selected winding, controls flow of a first current through the motor with the selected winding deactivated to rotate the rotor towards a direction of the selected winding, and controls flow of a second current from a charging station to the battery through the electric motor with the rotor rotated towards the selected winding.

Charging through electric drive system with minimum torque disturbance

A charging system includes: a charge port that receives shore power; a DC-to-DC converter or a motor inverter circuit; switches that connect the charge port and the DC-to-DC converter or the motor inverter circuit to battery packs; and a control module. The control module: determines open circuit voltages or states of charges of the battery packs; based on the open circuit voltages or the states of charges of the battery packs, determines whether to connect at least one of the battery packs to the charge port, the DC-to-DC converter, and the motor inverter circuit; and based on the determination of whether to connect at least one of the battery packs, control states of the switches to charge the at least one of the battery packs by selectively connecting the at least one of the battery packs to (a) the charge port, or (b) the DC-to-DC converter or motor inverter circuit.

Balancing of battery packs via DC-to-DC converters and motor inverter circuits

Some embodiments disclosed herein are directed to constraint handling for parameters of electric motors. In particular, embodiments of the present disclosure relate to handling constraints for parameters such as current, voltage, and torque associated with an electric motor. Other embodiments may be disclosed or claimed.

Constraint handling for electric motor parameters

Power transfer in an electric motors including segmented windings utilize control commands. A control system determines a d-axis command voltage for a secondary winding of an electric motor and a q-axis command voltage for the secondary winding based on a primary winding voltage, primary winding current, secondary winding current, and rotor electrical position. The control system generates gate control signals based on the determined d-axis command voltage and q-axis command voltage for the secondary winding and transmits the gate control signals to an inverter coupled to the secondary winding to control an electrical power transfer between the primary winding and the secondary winding.

Power transfer for electric motors with segmented windings

An energy transfer system includes a conversion device configured for partial power processing and configured to regulate current from a first battery system, and a controller configured to control the conversion device to adjust a first voltage of the first battery system to conform the first voltage to a second voltage of a second battery system, the second battery system connected in parallel with the first battery system by a bus. The conversion device is configured to receive power from the first battery system, cause a selected portion of the power to flow through a conversion stage to adjust the first voltage, the selected portion corresponding to a difference between the first voltage and the second voltage, cause a remaining portion of the power to flow directly to the bus and bypass the conversion stage, and output a current from the conversion device at the second voltage.

Energy transfer among mismatched battery systems

Techniques are provided for torque ripple mitigation. In one embodiment, the techniques involve determining a first torque ripple at a torque output of a target electrical machine, upon determining that the first torque ripple exceeds a threshold, reproducing the torque output based on a pair of gamma control sets, determining a second torque ripple at the reproduced torque output, upon determining that the second torque ripple falls below the threshold, generating qualified gamma controls based on the gamma control sets, and supplying the qualified gamma controls to the target electrical machine.

Torque ripple mitigation

Systems and methods for diagnosing health of a battery using in-vehicle impedance analysis. The method includes receiving a sensed current measurement for a cell of the battery; generating a current profile as a function of the sensed current measurement, including pulses to a peak current, the pulses having a pulse frequency (w); applying a current with the current profile to the cell; for each pulse in the current profile, receiving a voltage measurement for the cell that is responsive to the pulse, calculating an impedance for the cell responsive thereto, the impedance comprising a real component at the pulse frequency (RZw), and an imaginary component at the pulse frequency (IZw), identifying a battery health problem when either RZw exceeds a preprogrammed first threshold for the pulse frequency, or when IZw exceeds a preprogrammed second threshold for the pulse frequency, and storing the RZw and the IZw for the cell.

Systems and methods for diagnosing health of a battery using in-vehicle impedance analysis

A power control system for a vehicle includes a charge port and a contactor connected to the charge port and including a first plurality of switches. An energy storage system includes a second plurality of switches and one or more battery packs. A bi-directional DC-DC converter is connected between the energy storage system and a plurality of vehicle loads. A controller is configured to control states of the first and second plurality of switches to configure in a plurality of modes including a range improvement mode, a first charging mode to perform charging at a first voltage level, a second charging mode to perform charging at a second voltage level, a battery preconditioning mode; and an accessory load support mode.

Multi-function DC-DC converter for battery electric vehicles

A system for controlling power transfer includes a direct current (DC)-DC converter connected to a charging bus and selectively connected to a propulsion battery assembly and a supplemental battery assembly, the propulsion battery assembly having a first chemistry and configured to supply power to an electric motor of a vehicle, the supplemental battery assembly having a second chemistry that is different than the first chemistry. The system also includes a charger connected to the charging bus at a first side of the DC-DC converter, the charging bus connected to a load at a second side of the DC-DC converter, and a controller configured to control the DC-DC converter to perform a charging operation.

Fast charging capable mixed chemistry battery systems

Techniques are provided for activating a plurality of power features of a vehicle. In one embodiment, the techniques involve controlling a plurality of switches of a multi-function converter unit configuration to activate at least one of the plurality of power features of the vehicle, wherein the multi-function converter unit configuration includes a multi-function converter unit, at least one charge port, and a load.

Multi-function converter unit

An induction rotor assembly having conductive bars is provided. The assembly comprises a lamination stack comprising a body having a first end and second ends to define a longitudinal axis. The body has an outer circumferential portion extending from the first end to the second end. The outer portion has a plurality of walls defining open slots formed from the first end through the second end. The assembly further comprises a first ring disposed on the first end and a second ring disposed on the second end. The assembly further comprises a plurality of conductive bars extending between the first and second rings. Each conductive bar is disposed in one of the slots such that the respective conductive bar is in contact with the lamination stack and connects the first and second rings. Each bar comprises an inner portion and a conductive outer skin disposed about the inner portion.

System and method of making a cast induction rotor assembly having conductive bars

An electric vehicle includes an electrical system and performs a method of charging the electric vehicle. The electrical system includes a first battery subpack, a second battery subpack, wherein the first battery subpack, the second battery subpack, and an electrical load of the electric vehicle are connected in parallel, and a processor. The processor is configured to control a first connection between the first battery subpack and a first charge port and a second connection between the second battery subpack and a second charge port to charge each of the first battery subpack and the second battery subpack while providing power to the electrical load.

High voltage architecture for multi-port charging system

Presented are torque converters (TC) with hydraulic systems for converter feed and clutch control, methods for making/operating such TC assemblies, and vehicles equipped with such TC assemblies. A TC assembly includes a housing that drivingly connects to an electric motor, and an output member that drivingly connects to a multi-gear transmission. Rotatable within the TC housing are a turbine attached to the TC output member and an impeller juxtaposed with the turbine. A lockup clutch disposed inside the TC housing, between the turbine and housing, is operable to lock the housing to the output member. A disconnect clutch disposed inside the housing, between the impeller and housing, is operable to lock the housing to the impeller. A pump is attached to the TC housing and drivingly connected to the motor for feeding fluid into the housing to increase pressure within the TC chamber and activate the lockup and disconnect clutches.

Hydraulic system and control logic for torque converter assemblies

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Troy, MI, United States of America

Lei Hao