Five-phase Series-end Winding Motor Controller: Converter Topology and Modulation Method

This paper proposed a new class of motor controller topology—the series-end winding topology. This type of topology combines low cost and high performance. For a N-phase topology, it only contains N+1 bridge leg. And it has full current control freedom and high DC voltage utilization. By changing the winding series sequence, the DC voltage utilization of the proposed five-phase series-end winding topology can reach 2. At the same time, the relationship between the series-end winding topology and the open-end winding topology is explained, and the principle of zero-axis voltage elimination is also clarified. The series-end winding topology can be used as a complement to traditional half-bridge topologies and open-end winding topologies.