Inventor

RAHMAN KHWAJA M

US69 patents

⚠️ This page may combine multiple inventors who share the name “RAHMAN KHWAJA M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RAHMAN KHWAJA M

GEN MOTORS CORP

Gearless wheel motor drive system

Cooling and handling of reaction torque for an axial flux motor

Rotor magnet placement in interior permanent magnet machines

Wheel motor system

Electric motor control having DC-DC converter and method of using same

Multiple inverter system with low power bus ripples and method therefor

Auxiliary power conversion by phase-controlled rectification

Method of fabricating a rotor

Interior permanent magnet rotor

Auxiliary magnetizing winding for interior permanent magnet rotor magnetization

Method of fabricating a rotor for an electric traction motor

Inverter for electric and hybrid powered vehicles and associated system and method

Method and system of reducing turn-off loss and noise in a switched reluctance motor drive

Current control system for a switched reluctance motor

Position-sensorless control of interior permanent magnet machines

GM GLOBAL TECH OPERATIONS INC

Methods and systems for diagnosing stator windings in an electric motor

Fault handling of inverter driven PM motor drives

Gearless wheel motor drive system

Bar wound stator winding layout with long-pitched and short-pitched coils

Permanent magnet motor with stator having asymmetric slots for reducing torque ripple

Method and apparatus for torque ripple reduction

Interior permanent magnet machine having a mixed rare earth magnet and ferrite magnet rotor

Method and system for controlling permanent magnet AC machines

Method and system for controlling synchronous motor drive systems

Motor phase winding fault detection method and apparatus

Fault handling of inverter driven PM motor drives

Multi-layer magnet arrangement in a permanent magnet machine for a motorized vehicle

On-line minimum copper loss control of interior permanent-magnet synchronous machine for automotive applications

Methods for forming a magnet in a rotor

GM GLOBAL TECH OPERATIONS LLC

Permanent magnet electric machine with variable magnet orientation

Rotor assembly and method of manufacture for electric machines having multiple magnet lengths

Stator assembly with winding sets having hairpins from multiple hairpin layers

Stator assembly with electrically balanced conductor layers

Permanent magnet electric machine with moveable flux-shunting elements

Pole to pole variation in shape of injection molded magnets of internal permanent magnet machines

Rotor geometry for interior permanent magnet machine having rare earth magnets with no heavy rare earth elements

Interior permanent magnet machine with pole-to-pole asymmetry of rotor slot placement

RAHMAN KHWAJA M

Interior permanent magnet machine with pole-to-pole asymmetry of rotor slot placement

Rotor barrier shaping for demagnetization mitigation in an internal permanent magnet machine

Interior permanent magnet machine having off axis centered arc geometry

Methods and apparatus for a permanent magnet machine with asymmetrical rotor magnets

Methods and apparatus for a permanent magnet machine with an added air barrier

Concentrated winding machine with magnetic slot wedges

JURKOVIC SINISA

Pole-to-pole asymmetry in interior permanent magnet machines with arc-shaped slots

Axially asymmetric permanent magnet machine

Asymmetric stator teeth in an electric motor

KAISER EDWARD L

Multi-layer arc-shaped permanent magnet machine with reduced rotational stress

HENDRICKSON JAMES D

Powertrain with dual rotor motor/generator

STANCU CONSTANTIN C

High frequency rotary transformer for synchronous electrical machines

CONLON BRENDAN M

Multimode electrically variable transmission having a ferrite magnet motor and method of operating the same