Examenspresentation av Chenye Zou

Conducted at InfiMotion Technology Europe
Supervised by Shino George and Pär Ingelström
Opponent: Tianche Jiang, Mingshan Chen
Examinator: Torbjörn Thiringer

Abstract
Electric vehicles (EVs) are gaining popularity worldwide due to their low cost of use and sustainability. Key components of the EV drivetrain include an inverter and permanent magnet synchronous machine (PMSM). To better improve their efficiency, optimized pulse pattern (OPP) is proposed. However, simulating OPP together with the inverter and motor takes a lot of time because of high computational complexity. This thesis project utilizes a hardware in the loop (HiL) platform to accelerate the simulation. The PMSM and inverter models are running on a field-programmable gate array (FPGA) separately from the controller model to ensure a high sampling rate while maintaining the whole system running in real time. Then OPP is evaluated with this platform in comparison with the conventional space vector pulse width modulation (SVPWM). The result shows the big advantage of OPP in reducing inverter switching losses. Finally, the limitation and operating range of OPP is also discussed in this thesis report.

Welcome!

Chenye and Torbjörn