Robert E Mcdowell

US Patent:

20150211512, Jul 30, 2015

Filed:

Jan 29, 2014

Appl. No.:

14/166991

Inventors:

- SCHENECTADY NY, US
Paul Robert Gemin - Cincinnati OH, US
Benjamin Earl Ross - Waukesha WI, US
Stephen Duane Sanborn - Copake NY, US
Robert Earl McDowell - Waukesha WI, US

Assignee:

GENERAL ELECTRIC COMPANY - SCHENECTADY NY

International Classification:

F04B 49/20
F04B 23/06

Abstract:

A converterless motor-driven pump system includes an off-grid prime mover. The prime mover includes a rotational driveshaft that operates in response to a throttle or fuel input controller to control a rotation speed of the prime mover driveshaft. Operation of the throttle or fuel input controller is based on desired output characteristics of a pumping load. One or more electric power generators are driven by the off-grid prime mover to generate AC or DC power on an electrical bus shared by a plurality of variable speed electric motors. A plurality of pumps is connected to a common manifold shared by the plurality of pumps. The plurality of pumps is driven by the plurality of variable speed electric motors to generate a desired wellhead pressure or pumping load flow rate via the shared common manifold.