TY - JFULL AU - R. Kazemzadeh and J. M. Kauffmann PY - 2007/1/ TI - Turbine Speed Variation Study in Gas Power Plant for an Active Generator T2 - International Journal of Aerospace and Mechanical Engineering SP - 713 EP - 718 VL - 1 SN - 1307-6892 UR - https://publications.waset.org/pdf/11160 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 12, 2007 N2 - This research deals with investigations on the “Active Generator" under rotor speed variations and output frequency control. It runs at turbine speed and it is connected to a three phase electrical power grid which has its own frequency different from turbine frequency. In this regard the set composed of a four phase synchronous generator and a natural commutated matrix converter (NCMC) made with thyristors, is called active generator. It replaces a classical mechanical gearbox which introduces many drawbacks. The main idea in this article is the presentation of frequency control at grid side when turbine runs at variable speed. Frequency control has been done by linear and step variations of the turbine speed. Relation between turbine speed (frequency) and main grid zero sequence voltage frequency is presented. ER -