Roger H Daugherty

US Patent:

7164243, Jan 16, 2007

Filed:

Sep 30, 2003

Appl. No.:

10/675312

Inventors:

Yehia El-Ibiary - Simpsonville SC, US
Roger H. Daugherty - Simpsonville SC, US

Assignee:

Reliance Electric Technologies, LLC - Mayfield Heights OH

International Classification:

G01R 31/00
G06F 19/00

US Classification:

318254, 318798, 702 60, 702 58, 324 7624, 324772

Abstract:

A system and method for establishing a plurality of operating parameters of a multiphase motor. The plurality of electrical parameters may be established from stator resistance data and electrical input data. The system and method may be used to decompose the electrical input data into a positive sequence and a negative sequence. The positive sequence may be used to establish a plurality of electrical parameters of the motor. The plurality of electrical parameters may be used with the positive sequence and negative sequence to establish the output power of the motor.

US Patent:

20060066169, Mar 30, 2006

Filed:

Sep 30, 2004

Appl. No.:

10/955868

Inventors:

Roger Daugherty - Simpsonville SC, US
Rajmohan Narayanan - Greer SC, US
William Pizzichil - Easley SC, US

International Classification:

H02K 17/16
H02K 1/22

US Classification:

310216000, 310211000

Abstract:

In accordance with one exemplary embodiment, the present technique provides an electric motor having a stator core that is formed of a plurality of stator laminations and a rotor core that is formed of a plurality of rotor laminations. In the exemplary motor, the rotor laminations have mechanical and/or electrical characteristics that are different from the stator laminations. For example, the rotor laminations may have a different thickness than the stator laminations. Also, the rotor laminations may comprise a different material than the stator laminations. For example, the stator laminations may by alloyed with a certain percentage of an element, while the rotor laminations are alloyed with a different percentage of element.