Abstract
This chapter discusses the start-up simulation results of auxiliary drives of
fan and piston-type air-compressor driven by three-phase induction motors. The
computer model described in this chapter simulates a relay-contactor type system of
auxiliary machines powered from the secondary winding of the traction transformer
through the capacitive phase-splitter. The authors make an analytical comparison of the
start-up process at different values of the grid voltages. Comparative assessments of the
simulation-based and experimental oscillograms of voltages, currents and the rotational
speed of the motor-fan and motor compressor during the start-up process are described.
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