Investigation of doubly-fed machine in variable speed applications: Final technical report

Technical Report · Sun Sep 01 04:00:00 EDT 1985

OSTI ID:5656827

Renewable energy sources have long been recognized as attractive alternatives to the conventional generation of electric power. One of the great challenges is to convert the intermittent and varying energy of these renewable sources into electric power in an efficient and effective way. Some of the emerging technologies involve mechanical to electrical energy conversion, which has usually been accomplished through the use of synchronous machines operating at a constant input speed and constant frequency. The requirement for constant input speed is often incompatible with the desire for efficient energy capture and imposes difficult control problems on the conversion equipment. A more natural approach to the conversion of intermittent and varying energy sources is a conversion system which accepts a variable mechanical input speed and produces the grid required constant frequency and voltage directly. This program has investigated the doubly-fed machine as a potential candidate to convert a varying input speed to a constant frequency, constant voltage output. Although this work is applicable to all rotating generation configurations with speed dependent efficiency, special emphasis was placed on hydro and wind power sources. 20 figs., 8 tabs.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (USA). Advanced Energy Systems Div.
• DOE Contract Number: AC02-81RA50292
• OSTI ID: 5656827
• Report Number(s): WAESD-TR-85-0087; ON: DE88006374
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130700 -- Hydro Energy-- Power-Conversion Systems
17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DESIGN
DOCUMENT TYPES
ELECTRIC GENERATORS
ELECTRONIC CIRCUITS
HYDROELECTRIC POWER PLANTS
MACHINERY
PERFORMANCE TESTING
POWER PLANTS
PROGRESS REPORT
SMALL-SCALE HYDROELECTRIC POWER PLANTS
TESTING
TURBINES
TURBOMACHINERY
WIND TURBINES