Title :
A control strategy for series connected offshore wind turbines
Author :
Garces, Alejandro ; Molinas, Marta
Author_Institution :
Dept. of Electr. Power Eng., Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
This paper presents a control strategy for HVDC systems based on pulse width modulated current source converters. The strategy is applicable to series connected off-shore wind farms where the line current must be controlled by the on-land converter while the off-shore voltage and power are controlled by converters allocated in each turbine. A three stage hierarchical control based on proportional regulators was designed. Space vector modulation is used in the converter at medium switching frequency. The control and modulation show fast dynamic response and low harmonic distortion. This desirable behavior was demonstrated by simulation on a 16 MW system with an exact switching model of the semiconductor devices. both, short circuit and stationary state were studied.
Keywords :
PWM power convertors; offshore installations; power generation control; proportional control; wind power plants; wind turbines; HVDC systems; control strategy; harmonic distortion; line current; off-shore voltage; on-land converter; power 16 MW; proportional regulators; pulse width modulated current source converters; semiconductor devices; series connected off-shore wind farms; series connected offshore wind turbines; space vector modulation; three stage hierarchical control; Frequency conversion; Frequency modulation; HVDC transmission; Matrix converters; Power transformers; Wind farms; Wind turbines; Current source converter; Off shore wind energy; Wind farm layout; series connection;
Conference_Titel :
Power Electronics and Drive Systems (PEDS), 2011 IEEE Ninth International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-61284-999-7
Electronic_ISBN :
2164-5256
DOI :
10.1109/PEDS.2011.6147398
