REDUCTION OF START-UP SEQUENCE
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United States of America Patent
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Issued Date -
Feb 25, 2010
app pub date -
Aug 20, 2009
filing date -
Aug 22, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a method for bringing a brushless motor, such as a multiphase brushless motor, operatively connected to for example a compressor into an optimal angular starting position in an energy saving manner, the method comprising the steps of applying a first drive voltage to a first phase winding of the motor and measuring a current flowing in another phase winding of said motor, said current being generated in response to the first drive voltage applied to the first phase winding. The method further comprises the step of switching the applied first drive voltage off when said current reaches a steady-state condition. By applying the method of the present invention a significant amount of power can be saved. The present invention further relates to a system for carrying out the present invention.
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