MMC circulating current suppression strategy based on improved quasi-PR control
Authors:
Open Access
- 6 April 2023
- journal article
- research article
- Published by Darcy & Roy Press Co. Ltd. in Frontiers in Computing and Intelligent Systems
- Vol. 3 (2) , 16-20
Abstract
The internal circulation of modularized multilevel converter will affect waveform quality and increase system loss. In this paper, the basic principle and topological structure of MMC as well as the causes of the internal circulation are briefly analyzed. A method of harmonic component extraction based on the second-order generalized integrator and the suppression strategy of MMC circulation based on feedforward compensation quasi-proportional resonant control are proposed. The feasibility of this strategy is verified in MATLAB/Simulink, and the simulation results show that the circulation and capacitor voltage fluctuation are controlled within a reasonable range.Keywords
This publication has 1 reference indexed in Scilit:
- Modular Multilevel Converters for HVDC Applications: Review on Converter Cells and FunctionalitiesIEEE Transactions on Power Electronics, 2014