Ph.D. Dissertation Defense: Jiangheng Lu
Thursday, May 2, 2019
301 405 3681
ANNOUNCEMENT: Ph.D. Dissertation Defense
NAME: Jiangheng Lu
Professor Alireza Khaligh, Chair/Advisor
Professor Behtash Babadi
Professor Robert Newcomb
Professor Kevin Daniels
Professor Patrick McCluskey, Dean's representative
Date/Time: Thursday, May 2nd, 2019 at 2:30 pm - 4:30 pm.
Place: AVW 2328
Title: Integrated Single-Phase On-board Charger and Auxiliary Power Module For Electric Vehicles
With the growing demand for electrification of the transportation, the plug-in electric vehicles (PEVs), and plug-in hybrid electric vehicles (PHEVs), cumulatively called electric vehicles (EVs) are drawing more and more attentions. On-board charger (OBC), which is the power electronics interface between the power grid and the high voltage traction battery, is an important part for charging EVs. Besides the OBC, every EV is equipped with another separate power unit called auxiliary power module (APM) to charge the low voltage (LV) auxiliary battery, which supplies all the electronics on car including audio, air conditioner, lights and controllers. The main contribution of this work is a novel way to integrate both units together to achieve a charger design that is not only capable of bi-directional operation with high efficiency, but also higher gravimetric and volumetric power density, as compared with those of the existing OBCs and APMs combined.
The primary novelties of this work are: (i) a three-port integrated DC/DC converter, which combines OBC and APM together through an innovative integration method; (ii) an innovative zero-crossing current spike compensation for interleaved totem PFC and (iii) an new phase-shift based control strategy to achieve a regulated power flow management with minimum circulating losses.