NEWS & EVENTS
Congratulations to Dr. Dong Dong for his newest grant!
Oct 30, 2020
Overview
Accessing renewables energy and energy storages from grid, e.g. solar, wind, and batteries, inevitably requires the high-efficient solid-state power conversion solutions. Industry is moving toward mediumvoltage (MV) solutions, which can directly access the MV grid, to save bulky transformer, cables and $/kVA of the converter. First published in 2003, the Modular multilevel converter (MMC) technology immediately gains popularity and becomes a de-facto benchmark system in MV to HV voltage-sourceconverter (VSC). However, MMC still has many limitations. This proposal proposes a new family of modular-oriented MV multi-level converters, namely three-level hybrid modular multilevel converter (THMMC). The proposed concept leads to various topology variations. For instance, the diode-based THMMC (DTHMMC) rectifier provides a significant cost and total system size saving and efficiency improvement. The SiC devices can be used in the proposed solutions to synthesize high-fidelity ac output. The NSF funding will be propitious for PIs to perform detailed fundamental research study on this family of solutions and develop a set of fundamental modeling, control, and design solutions, which pave the path for industry adoption and train the students to learn medium-voltage power electronics and modular multilevel converter system.
Learn more about https://cpes.vt.edu/news/news/975
