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1 wrz 2022 · Hairpin windings are becoming a popular option for EV motors due to their reduced dc losses and improved heat dissipation capability when compared to traditional random windings. In this article, a comprehensive design approach of hairpin winding layouts is first presented.
This section explains the fundamental design principle for hairpin windings and the proper transposition and connection of series conductors in the wire path. In addition, the ef-fect of incorrect transposition of conductors in the wire path on additional AC losses is also considered. Machines 2022, 10, 1029. 3 of 15.
FIGURE 2 Simplified process chain of hairpin stator production (© RWTH Aachen University) Flyer-winding Needle-winding Hairpin Low slot-filling factor Low slot-filling factor High slot-filling factor FIGURE 1 Comparison of winding technologies with hairpin technology [6] (© RWTH Aachen University) DEVELOPMENT ELECTRIC MOTORS 56
9 paź 2022 · Hairpin windings are becoming a popular option for EV motors due to their reduced dc losses and improved heat dissipation capability when compared to traditional random windings.
This paper concentrates on the process steps hairpin forming and assembly. II. PRODUCTION OF STATORS OF ELECTRIC MOTORS WITH HAIRPIN WINDINGS The procedure for equipping stators with hairpin coils is still very new, which is why relatively few fully automatic solutions exist on the market. Fig. 1. Flatwire, Hairpin and Stator.
turns in a coil is the applied voltage divided by the number of turns. Using inverters, the turn-to-turn voltage can be as large as 90% of the applied voltage considering rise times of 50 ns [29].
Hairpin windings are becoming a popular option for EV motors due to their reduced DC losses and improved heat dissipation capability when compared to traditional random windings. In this paper, a comprehensive design approach of hairpin winding layouts is firstly presented.
