About 254 results
Showing the first 200 results.
https://drivepatents.com/patents/965575 · 31 Dec 2014
In at least one embodiment, an energy recovery and regeneration system includes at least one pyroelectric energy recovery module (ERM) (126), a coolant line (128), a valve (130) and an energy storage module (132). The at least one pyroelectric ERM (126) ge...
https://drivepatents.com/patents/965811 · 24 Dec 2014
A brushless, three phase wound field synchronous machine (WFSM) provides an electromechanical power transfer system wherein it may serve as both a starter and a generator. Power for the excitation system of the WFSM is provided by a three phase flux switch...
https://drivepatents.com/patents/965794 · 24 Dec 2014
Embodiments relate to systems and methods for selecting circuit element values for a hybrid active power filter operating over a variable frequency. In aspects, a hybrid active power filter (HAPF) circuit can eliminate current harmonics present in an AC po...
https://drivepatents.com/patents/965796 · 24 Dec 2014
Embodiments to systems and methods for tuning the control of a shunt active power filter over a variable frequency. In aspects, a shunt active power filter is provided to filter current harmonics from the output delivered to a dc load via a recitifier. The...
https://drivepatents.com/patents/965787 · 24 Dec 2014
An electromagnetic device (16) for overspeed control of a propeller (14) driven by an engine shaft (20) comprises a clutch (24), an eddy-current coupler (24), and an electromagnetic brake (26). The clutch (24) is disposed to mechanically decouple the prope...
https://drivepatents.com/patents/965764 · 24 Dec 2014
An electrical system for generating a reliable power source for starting an engine, including a first interface to a direct current power source 206 and a second interface to an inverter 210. The inverter is coupled to a generator 204, An inductive damper ...
https://drivepatents.com/patents/966124 · 17 Dec 2014
A method of metering fuel with a fuel valve (10) includes arranging a spool (12) within a sleeve (14) along an axis (A), wherein the spool (12) includes four seal lands (22A-22D). The sleeve includes a fuel inlet aperture (S34), a fuel outlet aperture (S36...
https://drivepatents.com/patents/966114 · 17 Dec 2014
A duct (20) includes a polymeric duct wall (22) that circumscribes a fluid-conveyance passage (24). The polymeric duct wall (22) includes, relative to the fluid-conveyance passage (24), an inner surface (22a) and an outer surface (22b). An electrically con...
https://drivepatents.com/patents/966104 · 17 Dec 2014
A system (100; 200) for controlling thermal conductivity between two thermal masses (102, 104; 202, 204) is disclosed. The system includes a first conduction body (110; 210) in thermal contact with a heat source (102; 202) and a second conduction body (120...
https://drivepatents.com/patents/966072 · 17 Dec 2014
A bleed valve system (10) includes a bleed valve (14), a valve regulator (18), a valve actuator (16) and a reverse flow relief valve (12). The bleed valve (14) is opened and closed to control a flow of bleed air from an upstream inlet (22) to a downstream ...