时间：2014年8月28日（周四）上午9:30

地点：自动化学院智能楼（A17）四楼报告厅

报告人： Julia Zhang (Assistant Professor)

Electrical & Computer Engineering, The Oregon State University.

报告题目：

HEV/BEV Noise, Vibration, Harshness Issues Caused by Electric Machine Drive Components and Mitigation Using Advanced Electric Machine Design and Motor Control Algorithms

Bio: Dr. Julia Zhang received her M.S. and Ph.D. degrees in electrical engineering from Nanjing University of Aeronautics and Astronautics in 2005, and The Ohio State University in 2010. From 2010 to 2012, she was a control engineer at Ford Motor Company, leading design and development of electric machine drives and power electronics control strategies for Ford’s 2013 hybrid electric vehicle products. She joined the Oregon State University as an assistant professor in the fall of 2012. Her research interests include the design of high power/torque density AC electric machines for vehicle systems, robotic systems, and renewable energy generation systems, modeling and control of AC electric machine drive systems, etc. Her research is currently funded by Ford Motor Company North America, the U.S. Office of Naval Research, and the Grainger Foundation.

Abstract: Interior permanent magnet (IPM) synchronous machines are widely used for passenger-size hybrid electric vehicles and battery electric vehicles traction. The IPM machines are typically driven by high power DC to AC power electronic converters that operate in the switching mode. The switching frequency varies from around 1 kHz to a few kHz. This talk discusses the vehicle noise, vibration and harshness (NVH) issues caused by the traction motors and the power converters. For example, the torque ripples of the traction motors can create vibration that excites the vehicle driveline resonance. The high frequency switching of the power electronic devices can generate unpleasant acoustic noise for the driver and passengers. Advanced electric machine design and motor control algorithms will be introduced to mitigate those NVH issues.