In machine design does any changes required for connecting stator winding in Star or Delta. How to identify, the machine is designed for star or delta.
The machine is operational in both cases. It’s just that for a star the voltage is 1.732 times greater.
As could be considered as V connection, of load, as of transformer ….
Typically, for two-level voltage source inverter drived PMSM, a delta connected wire can achieve higher speed than Y connected wire. This is because the voltage is 1.732 times greater as Valentyn Volodin mentioned. But the delta connected wire will create 3rd order harmonic path. In some industrial design where DC voltage is quite low, one may sacrifice the THD for better speed performance. As far as i know, i have seen low voltage compressors for vechicles using this design.
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