Title :
MPPT and yawing control of a new horizontal-axis wind turbine with two parallel-connected generators
Author :
Lee, Kooksun ; Im, Jongwook ; Choy, Ick ; Cho, Whang ; Back, Juhoon
Author_Institution :
Sch. of Robot., Kwangwoon Univ., Seoul, South Korea
fDate :
May 30 2011-June 3 2011
Abstract :
Commonly used horizontal-axis wind turbines (HAWT) have the following structure: two or three blades, a nacelle which contains power converting equipments, generators, and a tower which supports the nacelle. The generated power is transmitted from the nacelle to the ground. Due to this structure, the power transmission lines are twisted when the nacelle is yawing. Thus, slip ring or additional yaw control mechanism is required. We propose a new structure of HAWT which is free of this transmission line problem. Moreover, the size of inverter can be reduced since two generators are connected in parallel in our mechanism so that power is distributed. A controller for yawing is developed so that it works in harmony with the controller for power generation. An MPPT (Maximum Power Point tracking) algorithm is implemented for the proposed system and is validated by simulation.
Keywords :
maximum power point trackers; power apparatus; power generation control; power transmission lines; wind turbines; MPPT; blade structure; horizontal-axis wind turbine; maximum power point tracking; nacelle; power converting equipments; power converting generators; power generation control; power transmission lines; two parallel-connected generators; yawing control; Gears; Generators; Inverters; Mathematical model; Rotors; Torque; Wind turbines; Generator; HAWT; Inverter; MPPT; PMSM; Wind turbine; Yaw-axis controller;
Conference_Titel :
Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on
Conference_Location :
Jeju
Print_ISBN :
978-1-61284-958-4
Electronic_ISBN :
2150-6078
DOI :
10.1109/ICPE.2011.5944746