Integrated Multiport Back-to-Back Power Converter for Type-4 Wind Turbine Generator with Hybrid Energy Storage System

• Published in: IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society pp. 1 - 6
• Main Authors: Nguyen, Bang Le-Huy, Nguyen, Thai-Thanh, Pham, Van-Long, Vu, Tuyen, Panwar, Mayank, Hovsapian, Rob
• Format: Conference Proceeding
• Language: English
• Published: IEEE 17-10-2022
• Subjects: back-to-back converter; dual-buck; energy storage system; Legged locomotion; Logic gates; Multi-port power converter; Power supplies; Simulation; Supercapacitors; Switches; Voltage; wind turbine
• ISSN: 2577-1647
• DOI: 10.1109/IECON49645.2022.9968794

This paper proposes a novel integrated multiport bidirectional back-to-back power converter for a type-4 wind turbine that accommodates a battery and supercapacitor for energy storage. The circuit topology reduces 4 switches compared to the traditional configuration. Moreover, owing to the dual-buck structure embedded in the phase leg, the circuitry has no short-circuit path, therefore it withstands short-circuited events for a much longer time than the normal phase-leg and prevents the reverse current in turn-off recovery. The use of a hybrid energy storage system with battery and supercapacitor helps smooth out the power output under wind gusts and stabilizes the DC-link voltage under grid fault conditions. The case studies are carried out with a 1.5 MW wind turbine system. Simulation results are provided for the theoretical validation.