Application of Sinusoidal Field Pole in a Permanent-Magnet Synchronous Machine to Improve the NVH Behavior Considering the MTPA and MTPV Operation Area

• Published in: IEEE transactions on industry applications Vol. 52; no. 3; pp. 2280 - 2288
• Main Authors: Putri, Aryanti Kusuma, Rick, Sebastian, Franck, David, Hameyer, Kay
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: acoustic and noise of electrical machines; Acoustics; air gap flux; Correlation; Electric power generation; electric vehicles; Force; force densities; Harmonic analysis; Harmonics; Permanent magnets; PMSM; rotor pole shaping; Rotors; sinusoidal field pole; Stator windings; Stators; Synchronous machines; Teeth; Torque; torque harmonics; Vibration; sinusoidal field pole; permanent-magnet synchronous machine (PMSM); electric vehicles; torque harmonics; air-gap flux; force densities; Acoustic and noise of electrical machines; rotor pole shaping
• ISSN: 0093-9994; 1939-9367
• DOI: 10.1109/TIA.2016.2532289

In this paper, various approaches to improve the noise, vibration, and harshness (NVH) behavior of a single-layer interior permanent-magnet synchronous machine (IPMSM) are evaluated. The studied machine is used in electric vehicles and has a maximum output power of 53.6 kW. The acoustic noise of the electrical machine is mainly generated due to vibration of the stator yoke, which is caused by the radial forces acting on the stator's teeth. The radial force is directly correlated with the flux density in the air gap. Through modification of the outer frame of the rotor, the composition of the air-gap field, which consists of the fundamental wave and its harmonics, can be modified. The distribution of the radial force density on the surface of the stator teeth will be affected and the dominant order of the radial force can be reduced selectively, which will improve its acoustic behavior.