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In this paper, the circuit model of the parallel connected induction motors driven by single inverter is established. According to the circuit model, the problem of unbalanced electromagnetic torque caused by the wheel diameter difference of the parallel connected motors is analyzed. The weighted vector equation of the parallel connected motors is established. To improve the control performance with...
For ac railway drives it is desirable to feed the parallel connected induction motors from a common inverter. However, the parallel operation depends on several influences, e.g., the type of inverter, the mechanical transmission system and the characteristic of the wheel-rail contact. In order to understand the behavior a simulation model of the system including both the electrical and mechanical...
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