This paper presents a novel hybrid-excited E-core switched reluctance motor designed for high torque density and high efficiency for EV applications. The motor features a common-pole with three excitation sources: main windings, embedded magnets, and auxiliary common-pole windings. This hybrid configuration increases air-gap flux density, thereby enhancing electromagnetic torque. Optimal number of turns for the main and common pole windings is discussed to achieve a compromise between torque and efficiency. Two configurations for the common pole winding is offered: separately excited and series excited. Two drive strategies are discussed: a three-leg half-bridge drive for the series-excited common poles and a six-leg half-bridge drive for the separately excited common poles. In addition, both non-overlapping and overlapping current hysteresis control schemes are discussed. The advantages and disadvantages of each motor drive topology are studied. Finite element analysis is employed for design and performance evaluation, followed by motor prototyping and implementation of proposed drives and control schemes. Close agreement between simulation and experimental results is observed.
