Enhanced Independent Pole Control of Hybrid MMC-HVDC System - 2017 PROJECT TITLE :Enhanced Independent Pole Control of Hybrid MMC-HVDC System - 2017ABSTRACT:This paper presents an enhanced independent pole management theme for hybrid modular multilevel converter based on a full-bridge submodule and [*fr1]-bridge submodule. A detailed analysis of the power distribution between higher and lower arms beneath asymmetrical dc pole voltages is presented. It's found that the elemental ac currents within the upper and lower arms are asymmetrical. To enable operation beneath asymmetrical dc pole voltages, an enhanced freelance pole management scheme is proposed. The controller is composed of 2 dc management loops, two ac management loops, and circulating current suppression management based on current injection. Six modulation indices are presented to independently management the higher and lower arms. With this controller, the dc voltage operating region is significantly extended. To ride through a pole-to-ground dc fault while not bringing dc bias at the neutral purpose of the interface transformer, a pole-to-ground dc fault ride through strategy is proposed. The feasibility and effectiveness of the proposed control scheme are verified by simulation results using PSCAD/EMTDC. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest The Delta-Connected Cascaded H-Bridge Converter Application in Distributed Energy Resources and Fault Ride Through Capability Analysis - 2017 Propagation of Ac Background Harmonics in MMC HVdc Multi-terminal Systems due to Resonances and Mitigation Measures - 2017