Defense Event

Control and Optimization of Electric Ship Propulsion Systems with Hybrid Energy Storage

Jun Hou

Thursday, November 09, 2017
09:00am - 11:00am
236 NAME

Add to Google Calendar

About the Event

Abstract: Electric ships experience large propulsion-load fluctuations on their drive shaft due to encountered waves and the rotational motion of the propeller, affecting the reliability of the shipboard power network and causing wear and tear. This dissertation explores new solutions to address these fluctuations by integrating a hybrid energy storage system (HESS) and developing energy management strategies (EMS). Advanced electric propulsion drive concepts are developed to improve energy efficiency, performance and system reliability by integrating HESS, developing advanced control solutions and system integration strategies, and creating tools (including models and testbed) for design and optimization of hybrid electric drive systems. The feasibility and effectiveness of HESS are investigated and analyzed. Two different HESS configurations, namely battery/ultra-capacitor and battery/flywheel, are studied and analyzed to provide insights into the advantages and limitations of each configuration. The trade-off between control simplicity, modularity and overall system performance is evaluated and analyzed. A MPC based-EMS has been implemented on a physical testbed. Compared to the filter-based EMS, the proposed approach achieves superior performance, in terms of the enhanced system reliability, improved HESS efficiency, long self-sustained time, and extended battery life.

Additional Information

Sponsor(s): Professors Heath Hofmann & Jing Sun

Faculty Sponsor: Professors Heath Hofmann & Jing Sun

Open to: Public