The commutation is one of lhe most important problam on d-c machines, and the commutator sparking is a principal phenomenon of bad commutation. Previously, we have developed a measuring apparatus using microcomputer for the arc energy of all commutator sparks. In the present work, with this measuring apparatus，it is experimented on the relationship between the arc energy of commutator spark and the Spark-Number of JEC-54 by eye measurement. Results of the experimental work are as follows : (1) Arc energy is almost proportional to (S-1)^3 in the case of positive-brush, where S is the Spark-number. (2) The occurrence nunber of spark increases according to the Spark-Number. It cannot be disregarded on calculaion of the arc energy per one commutator revolution. (3) It seems possible to get the automatical judgement of the Spark-Number by comparing the magunitude ofarc energy.
直流機整流火花エネルギーの実験的考察
kiyo36_rikou_pp201-210.pdf
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