Control of a brushless electrical machine

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United States of America Patent

PATENT NO 9312801
SERIAL NO

14190013

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Abstract

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A brushless electrical machine has at least one phase winding which produces torque to drive a load. The control system for the machine is able to vary the flux and current supplied to a phase so as to vary the torque output as a function of the rotor position. The energization is reduced at particular angles to produce a dip in the torque profile, thus ensuring that, if the drive stalls, it does so at a predetermined position, for example where the losses in the drive are minimized.

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Patent Owner(s)

Patent OwnerAddress
NIDEC SR DRIVES LTDEAST PARK HOUSE OTLEY ROAD HARROGATE NORTH YORKSHIRE HG3 1PR

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cherney, Mark John Potosi, US 11 238
Randall, Steven Paul Leeds, GB 13 176

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