Hamilton Sundstrand Corporation

Sundstrand Corporation

Pratt & Whitney Canada Corp.

Hamilton Sunstrand Corporation

Other

United Technologies Corporation

Rosemount Aerospace Limited

Sunstrand Corporation

Hamilton Sundstrand Corporaration

Hamilton Sundstrand Corportion

Gregory I Rozman

Steven J Moss

Jacek F Gieras

Albert L Markunas

Vijay K Maddali

Kevin Allan Dooley

Vietson M Nguyen

Michael J Hanson

Matthew L Wilhide

Alexander Cook

Leland E Weber

Joshua C Swenson

Madan L Bansal

Douglas A Parsons

Sastry V Vedula

Paul E Nuechterlein

Michael Anthony Futrell

Lubomir A Ribarov

Andreas C Koenig

Shan-Chin Tsai

Kenneth Marks

James R Gustafson

James A Shippling

Thomas A Duclos

Mario R Rinaldi

Timothy F Glennon

Mustansir Kheraluwala

Shin Katsumata

Robert Scott Downing

William S Heglund

William R Owens

Malcolm J McArthur

Mahesh J Shah

Josh C Swenson

Jason B Solomonides

Pierre S Thollot

Mohammad Shahamat

Kevin P Roy

Si Jian Fang

Francis A Carcia

Graham T Fordyce

Paul G Baits

John C Risley

David W Chaudoir

Kenneth R Carr

Arthur A Pershall

Richard J Lapointe

Andrew Baker

Alan E King

Gabriel Ackerman

T M Cheng

Duane A James

Said M Waleed

Kevin A Dooley

A synchronous generator may comprise a rotor and a stator. The stator may comprise a first armature winding configured to output a first three-phase voltage and a second armature winding configured to output a second three-phase voltage. The synchronous generator may further comprise a first rectifier configured to rectify the first three-phase voltage received from the first armature winding, and a second rectifier configured to rectify the second three-phase voltage received from the second armature winding.

Electric power generating system with a synchronous generator

A stator for a generator includes a ferromagnetic core with two or more poles arranged about a rotation axis, a direct current (DC) field coil, and four or more alternating current (AC) coils. The DC field coil is wrapped about the pole. A first of the AC coils is wrapped about the pole at a location circumferentially spaced from a second of the AC coils. Generator systems and methods self-exciting synchronous reluctance generators are also described.

Self-exciting synchronous reluctance generators

An aircraft power generation unit to generate power provided to a load includes a permanent magnet generator (PMG) that includes first, second, third and fourth sets of windings, each of the winding sets including three windings and a control coil and a rectifier section that includes first through third six pulse rectifiers, a DC to DC to converter and a common local output bus. The unit also includes an output bus configured to be connected to the load and including a positive output bus rail and a negative output bus rail, wherein the negative output bus rail is connected to the negative output of the DC to DC converter and a controller that receives an input signal from at least one of the output sets and selectively couples the DC to DC converter and one or more of the first, second and third six-pulse rectifiers to the output bus.

Voltage regulation of multi-phase permanent magnet generator

An aircraft power generation unit to generate direct current (DC) power includes a flux regulated permanent magnet generator (PMG) that includes first through fourth sets of windings and a control coil and a rectifier section that include first through fourth six pulse rectifiers and a common local output bus. The unit also includes an output bus configured to be connected to the load and an H-bridge circuit connected across the output bus and outputs connected to the control coil. A controller receives an input signal from at least one of the windings and selectively couples either the common local output bus and fourth rectifier to the output bus negative rail and one or more of the first, second and third six-pulse rectifiers to the output bus to provide a constant voltage to the load.

Direct current voltage regulation of permanent magnet generator

An electric power system (EPS) may comprise a permanent magnet synchronous generator (PMSG), a high speed rectifier configured to receive a first alternating current (AC) power from the PMSG, and a low speed rectifier configured to receive a second AC power from the PMSG. The low speed rectifier may be configured to receive the first AC power in response to the PMSG rotating at a first rotational speed, and the high speed rectifier may be configured to receive the second AC power in response to the PMSG rotating at a second faster rotational speed.

Voltage regulation of permanent magnet generator with extended speed range

A rotor has a ferromagnetic body with a surface and magnetic poles arranged about a rotation axis. One or more of the magnetic poles has a first magnetic flux barrier and a second magnetic flux barrier. The first magnetic flux barrier is arranged radially between the rotation axis and the surface of the ferromagnetic body. The second magnetic flux barrier is arranged radially between the first magnetic flux barrier and the surface of the ferromagnetic body.

Hybrid synchronous machines

An example vehicle electrical power system includes a battery operable to power a load of a vehicle over a direct current (DC) bus, a multiphase alternating current (AC) machine comprising a plurality of windings, and a power converter. The power converter includes a plurality of power switches and a controller. The controller is configured to, in a first mode, operate the power converter as an active rectifier that provides current to the DC bus to supply DC loads, and charge the battery from the current on the DC bus; and in a second mode, operate the power converter as a boost converter that converts a variable output voltage of the battery to a constant voltage on the DC bus. The power converter utilizes the plurality of windings when operated as an active rectifier and boost converter. A method of operating a vehicle electrical power system is also disclosed.

Electrical power system for hybrid or electric vehicle

A switched reluctance electric machine includes a stator ring having a plurality of stator poles, at least one rotor concentric to the stator ring and including a yoke portion and a plurality of pole portions extending radially from the yoke portion. A plurality of pole flux barriers are embedded in each of the at least one rotor such that a first portion of each of the plurality of pole flux barriers extends radially into a first pole portion in the plurality of pole portions, a second portion of the pole flux barrier extends radially into a second pole portion in the plurality of pole portions, and a third portion of the pole flux barrier passes through the yoke portion and connects the first portion and the second portion of the pole flux barrier.

Switched reluctance electric machine including pole flux barriers

An aircraft power generation unit to generate direct current (DC) power provided to a load includes a six-phase permanent magnet generator (PMG) and a rectifier section that converts alternating current (AC) voltage produced by the six-phase PMG into a DC output. The rectifier section includes a first six-pulse rectifier and a second six-pulse rectifier connected to the second set of windings. The unit also includes an output bus configured to be connected to the load and including a positive rail and a negative rail connected to the second rectifier and an output voltage regulation section that provides an output voltage to the output bus. The unit also include a controller that provides a pulse width modulated (PWM) signal to the output voltage regulation section to vary the output voltage provided to the output bus.

Direct current voltage regulation of a six-phase permanent magnet generator

A power system architecture includes a prime mover, a plurality of single phase permanent magnet generators mechanically coupled to the prime mover, a DC power bus including a plurality of DC power storage components, each of the DC energy storage components being electrically connected to at least one of the single phase permanent magnet generators, a plurality of state of charge calculators, each of the state of charge calculators being connected to one of the DC energy storage component and being communicatively coupled to a generator control unit, and wherein the generator control unit is configured to independently control each of the single phase permanent magnet generators.

High voltage power generating system

A pump system comprises a fluid housing, a permanent magnet rotor, and an electric stator. The fluid housing has an axis, an axial inlet, and a radially outer outlet. The permanent magnet rotor is disposed on the axis, within the fluid housing, and has a plurality of perimetrically distributed fins that extend at least partly radially outward. The electric stator is disposed on the axis and within the fluid housing, and is situated adjacent the impeller fins of the permanent magnet rotor, separated from the impeller fins by an axial gap.

Centrifugal pump with integrated axial flux permanent magnet motor

An electric power system (EPS) may comprise a first power conversion channel and a second power conversion channel connected in parallel with a permanent magnet synchronous machine (PMSM). The first power conversion channel may be suitable for a load having a first electronic characteristic. The second power conversion channel may be suitable for a load having a second electronic characteristic. The first power conversion channel may comprise a first rectifier configured to receive an alternating current (AC) power from the PMSM and rectify the AC power into a first direct current (DC) power, a first buck converter configured to receive the first DC power from the first rectifier and reduce a voltage of the first DC power, and a first output filter configured to filter the first DC power and supply the first DC power to a first load.

Electric system architecture for a vehicle with multiple load characteristics

An assembly for operating a DC synchronous machine according to an exemplary aspect of the present disclosure includes, among other things, a controller that is configured to determine a position of a rotating portion utilizing a carrier signal, adjust current supply to a field winding, and monitor and adjust operation of the DC synchronous machine based on various electrical parameters relating to the carrier signal. A method for operating a DC synchronous machine is also disclosed.

Sensorless control of a DC synchronous machine

Embodiments of a method, controller and system include an electric generating system with interleaved direct current DC-DC converter are provided. The embodiments include a controller, a permanent magnet generator (PMG), wherein the PMG provides a 6-phase PMG, and a rectification stage coupled to the PMG. The embodiments also include a boost converter stage coupled to the rectification stage, wherein the boost converter stage comprises four phases, a DC link capacitor coupled to the boost converter stage, and an output filtering stage coupled to the DC link capacitor.

Electric generating system with an interleaved DC-DC converter

A method and system for providing voltage ripple compensation in a DC power generation system. The system includes a permanent magnet generator (PMG) and a passive rectifier in operable communication with the PMG. The system also includes a boost converter in operable communication with the passive rectifier and a controller in electrical communication with the boost converter. The controller is configured to cause the boost converter to supply a DC bus and to control the boost converter based on a voltage compensation signal to the boost converter to reduce voltage ripple on the voltage of the DC bus.

DC power generating system with voltage ripple compensation

Growing community of inventors

Rockford, IL, United States of America

Gregory I Rozman