A Comparative Analysis for Six-Phase Motor Configurations 2020-01-0465
In this paper, a comparison between different six-phase machine topologies is conducted considering their technical performance for automotive applications. Asymmetrical and symmetrical configurations as well as neutral point connection are considered as candidate topologies and modelled using vector space decomposition (VSD) and double stator or double dq transformations. In both cases, a generalized model to include arbitrary phase shift between the windings is presented as well as the effect of the neutral connection on the inverter model. For the selection, the steady state and post-fault performance are considered in terms of control flexibility, fault-tolerant capability, and dc-link voltage utilization. For the latest, the different topologies are evaluated operating in both linear and overmodulation regions based on space vector modulation (SVM). Although the flexibility for post-fault operation of asymmetrical configuration with isolated neutral points is lower than the single neutral version, the first one presents the best dc-link utilization with lowest complexity.
Diego Fernando Valencia Garcia, Joshua Taylor, Mustafa Mohamadian, Daniel Luedtke, Ali Emadi, Berker Bilgin
McMaster University, FCA US LLC
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