A Combined Wye-Delta Connection to Increase the Performance of Axial-Flux PM Machines With Concentrated Windings

作者：Vansompel Hendrik^*; Sergeant Peter; Dupre Luc; Van den Bossche Alex

来源：IEEE Transactions on Energy Conversion, 2012, 27(2): 403-410.

DOI：10.1109/TEC.2012.2184114

• Axial-flux machine
• combined wye-delta connection
• concentrated winding
• permanent-magnet machines
• winding factor

In this paper, a combined wye-delta connection is introduced and compared with a conventional wye-connection of a concentrated winding. Because the combined wye-delta connection has a higher fundamental winding factor, the output torque is higher for the same current density when a sinusoidal current is imposed. As the combined wye-delta connection has only a minor influence on the losses in the machine, the efficiency of the machine is also increased. The combined wye-delta connection is illustrated in detail for an axial-flux permanent-magnet synchronousmachine with a rated power of 4 kW at a fixed speed of 2500 r/min, using finite element computation and measurements on a prototype machine.

• 出版日期2012-6