| 摘要 |
With so-called single-current measurement in the directcurrent 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. |
