Regarding the crucial part of rotor “design,” the information provided in Sec. III-A were only focused on the comparisons of rotor barrier widths and numbers with given structures, such general concepts were generally adopted in the selections of SynRMs, but not for the LS-SynRMs. Whereas for the “optimization” of rotor conductor bars (Sec. III-B), only the comparison results of four given rotors with different conductor compositions were provided.