On the Modeling of Commutation Transients in Split-Phase Synchronous Motors Supplied ba Multiple Load-Commutated Inverters

Split-phase synchronous motors equipped with multiple-stator three-phase windings, each supplied by a loadcommutated inverter, play an important role in today\u2019s very high power electrical-drive applications. A criticality of these systems is the possibility that commutations occur in different motor windings simultaneously. The resulting electromagnetic transient depends on the magnetic coupling of motor phases among them and with rotor circuits. In this paper, a model to describe this phenomenon is presented along with some dedicated tests, conducted on various split-phase configurations, to assess the model validity