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Noise-Vibration (NVH) Analysis & Reduction in Traction Motors-PMSMs at the Design Stage
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on June 3, 2020 by SAE International in United States
Event: 11th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
Various electric propulsion systems are used in the industrial field. Recently, research focused on permanent magnet synchronous motors (PMSMs) because of their several advantages. There are various method to reduce Noise and Vibration of traction at the Design Stage of Motor. Noise reduction has constituted a difficult study point for the last years. A great part of this acoustic noise has electromagnetic origin. The harmonic spectrum of the PWM voltage supply is very rich and every frequency has direct effects on the motor acoustics and also Various Torques effect on the Motor, In this paper, the Design Stage of Electric Motor Describe the Design Specifications and Calculations For reduce Harmonics and unwanted Torque (Electromagnetic Forces) for NVH reduction. Such as two winding methods for the interior permanent-magnet synchronous motor for vehicle traction: concentrated winding and distributed winding. Both have merits and demerits, and both influences the motor’s performance. Also the paper presents and analyses the experimental acoustic noise of AC motors controlled by drives using different PWM techniques. Five criteria are taken into account: motor type, motor power, rotor speed, switching frequency and PWM method.