Title :
A DC to AC converter with thyristor inverter and active compensation
Author :
Chen, Z. ; Spooner, E.
Author_Institution :
Durham Univ., UK
Abstract :
A DC/AC converter based upon a grid-commutated thyristor inverter to process the power from a direct-drive variable-speed, modular PM generator in a wind energy conversion system is described. The inverter ignition angle can be adjusted continuously to control turbine speed so as to maximise energy capture. The reactive power and harmonic current output of the inverter are discussed. A compensation system including a voltage source inverter is introduced to minimise the harmonic distortion and to provide reactive power control. Several compensation schemes are considered. Experimental results from a laboratory model are presented along with computer simulation results which are in good agreement.
Keywords :
AC generators; compensation; harmonic distortion; machine control; permanent magnet generators; reactive power; thyristor convertors; variable speed gear; velocity control; wind turbines; DC to AC converter; active compensation; computer simulation; direct-drive variable-speed generator; energy capture maximisation; harmonic current output; harmonic distortion minimisation; inverter ignition angle; modular PM generator; reactive power; thyristor inverter; turbine speed control; voltage source inverter; wind energy conversion system;
Conference_Titel :
Power Electronics and Variable Speed Drives, 1996. Sixth International Conference on (Conf. Publ. No. 429)
Print_ISBN :
0-85296-665-2
DOI :
10.1049/cp:19960878
