馃Р Permanent magnet synchronous motors have permanent magnets in the rotor, generating a constant magnetic field in synchrony with the rotating field of the stator.
馃敽馃敾 The difference between IPMSM and SPMSM lies in the position of the magnets: embedded in the rotor for IPMSM and on the surface of the rotor for SPMSM.
馃挕 Externally excited synchronous motors use coils in the rotor to generate a magnetic field based on the current flowing through the coils.
馃攲 Externally excited synchronous motors have slip rings for current transmission.
馃挕 The strength of the magnetic field in SESM can be adjusted without the need for current.
馃攧 Reluctance motors have no magnets or coils in the rotor and align based on magnetic resistance.