Method for starting a permanent magnet single-phase synchronous electric motor and electronic device for implementing said method
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United States of America Patent
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Jun 23, 2015
Grant Date -
Jan 31, 2013
app pub date -
Jul 25, 2012
filing date -
Jul 23, 2010
priority date (Note) -
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Abstract
A method for starting a permanent magnet single-phase synchronous electric motor which includes a permanent magnet rotor and a stator with windings, and which is connected to an electrical grid by a switch. The method includes: a first starting attempt in which the windings are fed in current with first starting impulses generated only during the half-periods of a first polarity of the voltage of the electrical grid; a first control step which detects whether a starting condition has been obtained in the first starting attempt; and, if the first control step does not detect that the starting condition has been obtained within the term of the first starting attempt, a second starting attempt in which the windings are fed in current with second starting impulses generated only during the half-periods of a second polarity that is opposite to the first polarity of the voltage of the electrical grid.
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