Determination of the permissible armature current ripple level per terms of switching.
The nomograms are given, which determines the permissible level of ripple current of the armature depending on the engine power, at which the overload capacity and the width of the sparkless zone of the engine are reduced by 25% relative to its operation at a constant current. Expressions are given to recalculate the permissible ripple level at other overload reduction values Abilities. Nomograms are given for massive and laminated beds. For some large DC machines, the calculated and experimental values ??are compared. equal ripple.