Control architecture for a Doubly-fed Induction Machine propulsion drive

This paper presents a control architecture for a Doubly-Fed Induction Machine (DFIM) intended for propulsion applications. The DFIM is a mainstay for windmill and renewable energy applications. A unique controller is needed to fit the different demands of transportation applications, specifically where both AC and DC supply are available. This will enable increased range of operating speed with minimum power electronics on board. Compared to a wind turbine application, added challenges in a propulsion application are sudden load variations and the need for robust control during these variations. In this case, a shipboard application is examined.