Process for the suppression of current peaks during...

Details Process for the suppression of current peaks during... Process for the suppression of current peaks during...

G - Physics

01

R

318/115

G01R 31/34 (2006.01) H02P 6/00 (2006.01) H02P 6/14 (2006.01)

Patent

CA 2038846

With so-called single-current measurement in the direct- current link of a brushless direct-current motor, there is the problem that current peaks occur in the phase windings during commutation, said current peaks not being detected by single-current measurement in the direct-current link. Consequently, current regulation during commutation is based on an incorrect actual value of the current. The object of the present invention is to propose a process that, firstly, measures the motor current in low-cost manner by means of single-current measurement in the direct-current link and, secondly, suppresses the current peaks that occur during commutation. The object of the invention is achieved in that, in the phase windings, the current buildup is delayed by time period tv in relation to the current decay.

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