摘要：This paper proposes the sparse matrix converter as variable speed drives of a direct driven
wind energy conversion system (WECs), because its features can provide excellent power quality
at both sides of the converter and does not require dc-link energy storage. Variable speed
control of the WECS is proposed to get maximum power of the generator on each wind speed
variation based on the optimum torque control method. The electromagnetic torque of the
generator is regulated using PI controller according to the optimum torque of the wind turbine
located at the point of maximum power. The output of PI controller is the reference voltage for
modulation of SMC switches based on Space Vector Modulation (SVM) method. The
verification result of the proposed model through the simulation shows that the generator output
power can reach the maximum point on each wind speed variation. The use of SMC has also
been able to improve the power quality with low Total Harmonic Distortion (THD) of voltage
and current at grid side.
关键词：Sparse matrix converter; wind energy conversion system; optimum torque control;;
maximum power control.
