System and method for low speed control of polyphase AC machine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9186378
APP PUB NO 20130155731A1
SERIAL NO

13720709

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method of starting a wind turbine generator of any type of polyphase AC machine, including, but not limited to, brushless DC or permanent magnet machines is disclosed. The machine starts from a dead stop or from low speed operation and is accelerated to the cut in speed for power production. The start-up is realized utilizing the common set of electrical conductors and the power converter also used for capturing the generated power. Under initial operation, the power converter executes a PWM modulation technique to drive the machine. Periodically, the PWM modulation is stopped to read the electrical position of the generator.

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Patent Owner(s)

  • ENSYNC, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jobe, Nathan Germantown, US 4 41
Laubenstein, Thomas Alan Waukesha, US 2 20
Reichard, Jeffrey A Oconomowoc, US 22 403

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