Title :
Power devices loading in multilevel converters for 10 MW wind turbines
Author :
Ma, Ke ; Blaabjerg, Frede ; Xu, Dehong
Author_Institution :
Dept. of Energy Technol., Aalborg Univ., Aalborg, Denmark
Abstract :
Several promising multilevel converter solutions for 10 MW wind turbines using permanent magnet synchronous generators are proposed, designed and compared both with one-stage gear-box drive and direct drive systems. The current and loss distributions, as well as the utilization of power devices in each converter are analyzed based on simulation results. Finally, the total loss and efficiency comparison are given. It is concluded that five-level and three-level H-bridge topologies show higher efficiency either in the power conversion or in the device utilization compared to the three-level Neutral-Point-Clamped topology with both the direct-drive and one-stage gear box drive systems.
Keywords :
current distribution; permanent magnet generators; power convertors; synchronous generators; wind turbines; H-bridge topology; current distribution; direct drive system; loss distribution; multilevel converter; neutral-point-clamped topology; one-stage gear-box drive system; permanent magnet synchronous generator; power 10 MW; power device loading; power device utilization; wind turbine; Gears; Generators; Loading; Switches; Topology; Wind turbines; Windings;
Conference_Titel :
Industrial Electronics (ISIE), 2011 IEEE International Symposium on
Conference_Location :
Gdansk
Print_ISBN :
978-1-4244-9310-4
Electronic_ISBN :
Pending
DOI :
10.1109/ISIE.2011.5984182
