18489084. TECHNIQUES FOR REDUCTION OF ELECTRIC MOTOR TORQUE PULSATION (FCA US LLC)
TECHNIQUES FOR REDUCTION OF ELECTRIC MOTOR TORQUE PULSATION
Organization Name
Inventor(s)
Szabolcs Sovenyi of Bloomfield Hills MI US
Jeffrey Orzechowski of Troy MI US
Fabrice Charlette of Vaux sur Seine FR
TECHNIQUES FOR REDUCTION OF ELECTRIC MOTOR TORQUE PULSATION
This abstract first appeared for US patent application 18489084 titled 'TECHNIQUES FOR REDUCTION OF ELECTRIC MOTOR TORQUE PULSATION
Original Abstract Submitted
An electric motor system, such as for an electrified vehicle, includes a permanent magnet motor (PMM) including a hollow cylindrical stator defining a circular inner portion with a plurality of slots, defined between a respective plurality of ferromagnetic teeth, and having a plurality of electromagnetic coils arranged in the plurality of slots, respectively, and a cylindrical rotor disposed within the stator and defining a circular outer portion having N pairs of permanent magnets arranged thereabout to define N rotor poles, respectively, wherein at least one pair of the N pairs of permanent magnets is asymmetrically staggered or offset relative a symmetric N pole positioning, and wherein N is an even integer greater than or equal to four, and a controller configured to control the PMM to mitigate or eliminate magnetic cogging.