Design and optimization of segmented PM consequent pole hybrid excited flux switching machine for EV/HEV application

Hybrid Excited Flux Switching Machines (HEFSMs) unique feature of high torque density (T
_den
) of Permanent Magnet (PM) machines and flux regulation capability of wound field excitation machines. Due to aforesaid unique features, stator active HEFSMs are preferred for EV/HEV applications. In this paper a new Segmented PM Consequent Pole HE-FSM (sPMCPHEFSM) with flux bridge is proposed for EV/HEV. The developed SPMCPHEFSM exhibits improved flux modulation and flux regulation capability at reduced PM usage (suppressed PM volume by 46.52% and PM cost by 46.48%) and eliminating stator leakage flux. First, SPMCPHEFSM is geometric optimized (GO) for investigating influence of leading design with key performance indicators such as flux linkage (Φ
_pp
), average torque (T
_avg
), cogging torque (T
_cog
), T
_den
, average power (P
_avg
) and power density (P
_den
) and then proceeded optimized model to structure modification for optimal stator design and position of field excitation coils (FEC). Comprehensive performance analysis reveals that the developed SPMCPHEFSM show improved Φ
_pp
maximum up to 9.11%, improved T
_avg
maximum up to 23.63%, truncate T
_cog
up to 18.9% whereas T
_den
and P
_den
are boost up to 23.55% and 89.72% respectively.