Properties and characteristics of hairpin winding for applications in electrical car powertrain

U radu su navedena i obrađena postojeća pravila i načini izrade višeslojnih valovitih namota s profilnom žicom s obzirom na broj utora, polova, paralelnih grana i broj vodiča u utoru, a sve je objašnjeno na primjerima patentiranih namota. Predložen je novi skup pravila za izradu namota za primjenu u električnim strojevima s unutarnjim permanentnim magnetima i pokazano je zašto je taj skup pravila ispravan. Na primjeru električnog stroja električnog automobila Nissan Leaf pomoću simulacija analizirani su gubici u hairpin namotu, njihovo ponašanje s promjenom temperature, faznog kuta i brzine vrtnje stroja. Također, uspoređeni su proračuni gubitaka u namotu između programskih paketa Motor-CAD i Infolytica MagNet.In the thesis, rules for manufacturing hairpin windings in regards to the number of slots, poles, parallel paths and number of conductors in a slot are given and explained for examples found in hairpin winding patents. A new set of rules for manufacturing hairpin windings is given and it is shown why a winding made by following these rules is correct. For an example of a Nissan Leaf electric motor, simulations for determining losses in the winding were made and their dependence on temperature, phase advance angle and shaft speed are given. Also, calculation of losses in programs Motor-CAD and Infolytica MagNet were compared