Switching frequency optimization and advanced current control techniques for an electric vehicle traction drive

The performance of an electric vehicle traction drive, comprised of an electronic power converter feeding power to an electric motor, is defined by its control stages and different system parameters- such as switching frequency of the semiconductor devices of the converter. The proposed internship aims to determine changes in conventional control strategies and selection of switching frequency to improve the power conversion efficiency and drive response time. First, selection of switching frequency to improve the power conversion efficiency and drive response time. First, different variants of the control strategies will be investigated along with their impact on drive performances. Second, a procedure will be established to adjust operating switching frequency based on operating point of the drive: Third, a control strategy, tailored to improve dynamic performance and reduce losses of the drive will be established. The strategies will be implemented on a TM4 traction drive over a wide operating range and necessary adjustments will be made to optimize their performance. The resulting strategies will be presented to TM4 in the form of a control block, readily available for use within their existing control system.

Faculty Supervisor:

Geza Joos

Student:

Subhadeep Bhattacharya

Partner:

TM4

Discipline:

Engineering - computer / electrical

Sector:

Energy

University:

McGill University