Title:
PRIME MOVER FOR OPERATING AN ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO2000039917
Kind Code:
A3
Abstract:
A prime mover such as a microturbine generator is operated to generate dc power, and an inverter is controlled to convert the dc power to ac power. The ac power is supplied to an electric motor. The frequency of the ac power is ramped up during motor startup to reduce motor inrush current. The frequency or current of the ac power may be varied in response to process requirements during normal operation of the motor.
Inventors:
SCHWARTZ JERRY H
SKOWRONSKI MARK
SKOWRONSKI MARK
Application Number:
PCT/US1999/030409
Publication Date:
November 09, 2000
Filing Date:
December 21, 1999
Export Citation:
Assignee:
ALLIED SIGNAL INC (US)
International Classes:
H02P1/28; H02P1/30; H02P9/10; H02P27/06; (IPC1-7): H02P1/28; H02P1/30; H02P7/63
Foreign References:
US4951769A | 1990-08-28 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 03 31 March 1999 (1999-03-31)
CRAWFORD EPPERLY MURPHY SAUNDERS: "Applying adjustable frequency controllers to high-starting-torque loads", PETROLEUM AND CHEMICAL INDUSTRY CONFERENCE, 1993, pages 89 - 100, XP002136103
DATABASE WPI Section Ch Week 198633, Derwent World Patents Index; Class M21, AN 1986-217869, XP002136714
PATENT ABSTRACTS OF JAPAN vol. 003, no. 100 (C - 056) 24 August 1979 (1979-08-24)
CRAWFORD EPPERLY MURPHY SAUNDERS: "Applying adjustable frequency controllers to high-starting-torque loads", PETROLEUM AND CHEMICAL INDUSTRY CONFERENCE, 1993, pages 89 - 100, XP002136103
DATABASE WPI Section Ch Week 198633, Derwent World Patents Index; Class M21, AN 1986-217869, XP002136714
PATENT ABSTRACTS OF JAPAN vol. 003, no. 100 (C - 056) 24 August 1979 (1979-08-24)
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