The paper presents the results of synchronization calculations for a selected model of the GAe 1716/20t two-speed synchronous motor with switchable armature and field magnet windings, used for driving the main fans in deep mines. The calculations were performed using a specially developed (and validated by measurements) field-circuit model of the motor. The effect of the initial instant of synchronization on the latter's effectiveness and on dynamic process stabilization time was studied. It is shown that synchronization effectiveness can be increased through proper field current control in the synchronization initiation-synchronous speed interval. It is also shown that synchronization time can be reduced and the dynamic waveforms attenuated after the motor reaches the synchronous speed. The calculation results are presented in the form of diagrams.

The paper deals with construction of single-phase line start permanent magnet synchronous motor. Circuit-field single-phase line start permanent magnet synchronous motor model based on the mass production single-phase induction motor was applied in Maxwell program. Various rotor constructions were taken into account. Influence of the rotor construction on the motor properties was examined. Running motor performances were examined.

This paper presents the results of transient torque simulations during start-up of permanent magnet synchronous motor for various initial rotor positions. The influence of input voltage on starting torque transients is also considered. Examples of applications for large electric drives are shown. Streszczenie: W pracy przedstawiono wyniki symulacyjnych obliczeń momentów podczas rozruchu silnika synchronicznego wzbudzanego magnesami trwałymi dla różnych kątów początkowych położenia wirnika. Wykonano obliczenia tych momentów dla różnych wartości napięć zasilających. Pokazano przekłady zastosowań takich silników w napędach elektrycznych dużej mocy. Właściwości i parametry silników synchronicznych z magnesami trwałymi.

No abstract

The paper deals with analysis of line start permanent magnet synchronous motor start and synchronization process. Four-pole 160 kW low-voltage LSPMSM was investigated. FEM method was applied. Streszczenie Artykuł zawiera wyniki badań procesu rozruchu i synchronizacji silnika synchronicznego średniej mocy wzbudzanego magnesami trwałymi o rozruchu bezpośrednim. Badania wykonano wykorzystując model polowo-obwodowy. (Analiza właściwości rozruchowych silnika synchronicznego z magnesami trwałymi o rozruchu bezpośrednim średniej mocy)