Eaton Corporation

About: Eaton Corporation is a company organization based out in Taipei, Taiwan. It is known for research contribution in the topics: Circuit breaker & Clutch. The organization has 9516 authors who have published 12004 publications receiving 161134 citations. The organization is also known as: Eaton Corporation Plc.

Electric motor drive unit

Abstract: An electric motor drive unit for driving a worm wheel such as for vehicle window regulator applications wherein a casing housing a rotatable armature utilizes a synthetic plastic end cap at one end, and a worm wheel housing constitutes the motor end cap at the other end. A worm shaft rotatably mounted within the wheel housing upon its own radial and thrust bearings interconnects to the motor armature through a self-aligning drive element extending through a thrust bearing defined in the worm wheel housing. The brush holders for the motor are homogeneously formed of synthetic plastic material upon the associated end cap, and the armature utilizes an inexpensive self-aligning bearing mounted within the end cap and worm wheel housing.

Rotary wheel-end assembly for tire inflation system

Abstract: A rotary wheel-end assembly (90) is provided that includes a disc-like member (26) that when secured to a vehicular wheel hub (16) is operative to rotate relative a stationary axle spindle as well as provide a first chamber (28) about the end of axle (2). Assembly (90) has a passageway (36) therethrough for conveying pressurized air to the tire from axle (2) and includes a cover (42) secured in spaced-apart relationship to a side of member (26) facing away from axle (2) to provide a second chamber (46). Chambers (28) and (46) are adapted to hold a lubricant for lubricating frictional interaction between rotary assembly (90) and stationary axle (2) as well as wheel bearings (12) and at least one opening (40) is provided through member (26) for providing fluid communication between chambers (28) and (46) in addition to the preferable inclusion of at least one resilient closable member (48) through cover (42) for conveying lubricant into chamber (46).

Circuit protector monitoring assembly kit and method

Abstract: Monitoring assemblies, kits and methods for determining an operational state of a circuit protector in an electrical circuit.

Electrical switching device or trip unit acquiring predetermined settings from another electrical switching device or trip unit

Abstract: A first trip unit for interconnection with a second trip unit includes current transformers and potential transformers for sensing current, voltage and frequency conditions of a circuit breaker's separable contacts. A microprocessor-based trip mechanism provides a trip signal, which is employed by the circuit breaker's operating mechanism to open the separable contacts as a function of the sensed electrical conditions and related predetermined operating values. The microcomputer's transceiver communicates with the second trip unit over a passive two-wire communication cable to acquire the predetermined settings of the second trip unit. The microcomputer includes a firmware routine which employs the acquired predetermined settings as its predetermined values.

Soft started induction motor modeling and heating issues for different starting profiles using a flux linkage ABC-frame of reference

Abstract: In order to mitigate the adverse effects of starting torque transients and high inrush currents in induction motors, a popular method is to use electronically controlled soft-starting voltages utilizing series-connected silicon-controlled rectifiers (SCRs). Investigation of semioptimum soft-starting voltage profiles was implemented using a flux linkage ABC frame of reference model of a soft-started three-phase induction motor. A state-space model of the soft-starter thyristor switching sequence for the motor and load was developed and implemented in a time-domain simulation to examine winding heating and shaft stress issues for different starting profiles. Simulation results of line starts and soft starts were compared with measured data through which validation of the model was established. In this paper, different induction machine soft-start profiles are shown, and comparisons of starting times, torque profiles, and heating losses are made. Discussion of these results and conclusions as to the near-optimum types of profiles are delineated based on peak torque, starting times, and winding heating criteria