A Novel Hybrid-Excited Switched-Flux Brushless AC Machine for EV/HEV Applications

Magnetic flux analysis of E-Core hybrid excitation flux switching motor with various topologies

“…The total number of armature winding turns is equal to that of DC-FEC winding turns to ease the comparison of armature and field currents, because the slot areas for these two kinds of windings are equivalent. It is worth mentioning that, different with HEFSM developed from conventional PMFSM [4], the PM DC-FEC in the designed ECore HEFSM remains similar as that in the conventional ECore PMFSM. With additional DC-FEC employs in the designed motor, variable flux control capability can easily be applied to the E-Core HEFSM for various performances when compared with constant flux of PM in PMFSM.…”

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

“…PMFSM topology exhibits torque density similar to that of a fractional-slot PM machine, which is much higher than that of the DSPM [73]. A novel E-core hybrid-excited PMFSM is proposed, which has fewer magnets and a higher torque density than a conventional PMFSM [74]. Some wound-field SF machines (WFSFM) are also proposed for magnetless alternative solutions.…”

Design studies and performance of HEFSM with various slot-pole combinations for HEV applications

“…1(d) [11]. It maintains the same outer diameter and exhibits a simpler 2-D structure than the HEFSM discussed in Fig.…”