ANALYSIS OF THE PROCESSES OF OCCURRENCE OF SUBHARMONIC COMPONENTS IN CONTACT POWER SUPPLY NETWORKS WITH NONLINEAR LOADS

The article considers the calculation of the modes of occurrence of subharmonic components in traction power supply networks of railway transport, containing traction converters, controlled and uncontrolled rectifiers. The processes of the appearance of harmonic components during the operation of electric locomotives with zone-phase and pulse control using a four-quadrant 4q-S converter in power circuits are considered. Harmonics related to the fundamental and subharmonic components are determined by the harmonic balance method.

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