Self-Excited Induction Generator Based Microgrid with Supercapacitor Energy Storage to Support the Start-up of Dynamic Loads

• Main Authors: ION, C. P., SERBAN, I.
• Format: Article
• Language: English
• Published: Stefan cel Mare University of Suceava 2018-05-01
• Series: Advances in Electrical and Computer Engineering
• Subjects: microhydro power; generators; induction motors; supercapacitors; DC-DC power converters
• Online Access: http://dx.doi.org/10.4316/AECE.2018.02007

A supercapacitor storage system (SCSS) is used for improving the dynamic performances of a microgrid (MG) fed by a self-excited induction generator (SEIG), in the case of the direct start-up of an induction motor (IM) of comparable power. The primary control system contains a voltage source inverter (VSI) with a dump load (DL), to which the SCSS is added. The control strategy for the SCSS consists of injecting power into the VSI DC-link when, because of the overload created by the IM, the DC voltage decreases under the acceptable limit. Thus, the overall performance of the SEIG-supplied MG is significantly improved. Simulations and experimental results accomplished on a laboratory-scale MG validate the effectiveness of the proposed control structure.