Title :
Frequency adaptive PR-controller for compensation of current harmonics
Author :
Uphues, Andreas ; Notzold, Kilian ; Wegener, Ralf ; Soter, Stefan
Author_Institution :
Retostronik GmbH, Gevelsberg, Germany
Abstract :
The use of proportional resonant (PR) current controller in grid side wind power converters instead of the traditional proportional integral (PI) controller has gained a large popularity. Particularly its capability for compensating harmonics in the current waveforms is an essential feature. Due to the replacing of the generator side converter by a simple diode rectifier, harmonics with variable frequencies into dependence of the generator frequency appear in the current waveforms. To reach the IEEE standard for the total harmonic distortion (THD) a frequency adaptive PR-controller for compensating these harmonics is required.
Keywords :
PI control; electric current control; harmonic distortion; power convertors; power grids; power system harmonics; wind power plants; IEEE standard; PI controller; current harmonics; frequency adaptive PR-controller; generator side converter; grid side wind power converters; proportional integral controller; proportional resonant current controller; total harmonic distortion; Equations; Frequency control; Frequency measurement; Harmonic analysis; Mathematical model; Resonant frequency; Transfer functions; Inverter control; adaptive resonant controller; current harmonic compensation; grid codes; renewable power generation systems; wind power;
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
DOI :
10.1109/IECON.2014.7048792
