Title :
Impact of modulation strategies on power devices loading for 10 MW multilevel wind power converter
Author :
Blaabjerg, Frede ; Isidori, Andrea ; Rossi, Fabio Mario
Author_Institution :
Dept. of Energy Technol., Aalborg Univ., Aalborg, Denmark
Abstract :
This paper focuses on the control and modulation of a three-level Neutral Point Clamped (3L-NPC) back-to-back full scale converter for a 10 MW direct-drive wind turbine, equipped with a Permanent Magnet Synchronous Generator (PMSG). Emphasis is oriented towards the investigation of the power losses in the semiconductor devices of three-level converter adopting continuous and discontinuous PWM modulation strategies. This aspect strongly influences the operation of the converter and directly affects its efficiency. Therefore, a simulation platform is developed in Matlab/Simulink and PLECS environment to analyse the dynamics of the system using different kinds of modulation strategies, identifying which methods can improve the converter efficiency. It is concluded that 60° discontinuous PWM modulation strategies show less power losses in the semiconductor devices and will increase the overall efficiency of the converter.
Keywords :
PWM power convertors; permanent magnet generators; synchronous generators; wind turbines; 3L-NPC; Matlab/Simulink; PLECS environment; PMSG; continuous PWM modulation strategies; direct-drive wind turbine; discontinuous PWM modulation strategies; multilevel wind power converter; permanent magnet synchronous generator; power 10 MW; power losses; semiconductor devices; three-level converter; three-level neutral point clamped; Generators; Pulse width modulation; Reactive power; Switches; Wind power generation; Wind turbines;
Conference_Titel :
Power Electronics for Distributed Generation Systems (PEDG), 2012 3rd IEEE International Symposium on
Conference_Location :
Aalborg
Print_ISBN :
978-1-4673-2021-4
Electronic_ISBN :
978-1-4673-2022-1
DOI :
10.1109/PEDG.2012.6254086
