Northrop Grumman Systems Corporation

Westinghouse Electric Corporation

Patricia A O'Donnell

Charles S Kerfoot

Joseph J Springer

David L Schantz, Jr

William B Hall

Frank A Lindberg

Frank E Altoz

Geoffrey B Lansberry

Thomas C Underwood

James L Munro

Ngon B Nguyen

Michael J Ankrom

James H DeOms

Ronnie L Starling

Brian H Smith

Beth A Herman

Eric L Mohler

Richard M Young

William B Winkel

Todd M Zaranski

Brian A DeAbreu

Marshall G Jones

Aaron D Valdivia

An electric vehicle propulsion system having a motor with first and second electrically isolated windings and a system control unit for controlling the motor, wherein the system control unit includes a first power bridge for driving the first windings and a second power bridge for driving the second windings.

Electric vehicle propulsion system employing AC induction motor control

An easy to assemble transformer for use in an electronics module of an electric vehicle. The transformer can be assembled from the 'top down,' thus alleviating the need to build the transformer as a subassembly unit. During manufacture of the transformer, windings are wound onto a thermally conductive coil form. Next upper and lower E-shaped core members are inserted into openings in the top and bottom of the form so that the side legs and the center legs of the E's touch and are in alignment. The thermally conductive coil form has a portion that touches a cold plate when the transformer is mounted on the cold plate. The transformer is further secured to the cold plate by a mounting bracket.

Method of manufacturing heat dissipating transformer coil

An on-board electric vehicle battery charger includes a surge limiter circuit, a power factor control circuit, and a resonant inverter circuit. The power factor control circuit includes a boost regulator circuit providing a fixed voltage on an output capacitor. The resonant inverter circuit uses a resonance capacitor and the leakage inductance of an output transformer to establish a resonance frequency at least 500 times the AC input power frequency.

Electric vehicle battery charger

Heat dissipating transformer coil

Growing community of inventors

Davidsonville, MD, United States of America

Patricia A O'Donnell