An approximate estimate of a low-power DC motor drive by economic indicators.
Abstract
Several electric drive systems can satisfy the technical requirements of various production mechanisms. The final choice is made by economic evaluation. Modern systems of adjustable electric drive have a stepwise schedule of load and speed, which significantly complicates the economic assessment. It is recommended for an approximate economic assessment to result in a stepwise graph of load and speed to two equivalent, where the load and speed are equal to the mean and root-mean-square values. The error does not exceed 15% for low power drives. The ratios for determining the areas of modes of operation with minimal costs and a graphical method for determining the costs and payback period of the systems of an adjustable electric drive are given. Ill. 2, Bible. 3