METHOD OF QUALITY CONTROL OF COMMUTATION IN COMMUTATOR ELECTRICAL MACHINE SEGMENTS Russian patent published in 2009 - IPC G01R31/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering. The proposed method comprises measuring pulsed electromagnetic field of breakage current for every commutation section with the help of magnetically-sensitive elements arranged between the area the sections are jointed to commutator in and the start of contact surfaces on, both leaving and leading commutator segments. Breakage current quantisation and arc existence algorithm is preset proceeding from invariability of charge value for every quantisation time interval. Note here that, beforehand, standard dependence of the weight of material discharged due to electric-arc erosion in every pair of contact surfaces upon the product of maximum breakage current amplitude, for the given quantisation interval, by normalised charge specified in constructing quantisation algorithm, is formed. Actual weight of aforesaid discharged material is determined by comparing it with standard dependence. Data obtained is summed for the worst commutation cycle to be determined from the maximum total weight.

EFFECT: higher validity, fast data deriving.

5 dwg