期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2021
卷号：3
期号：4
页码：14-21
DOI：10.35629/5252-030313131318
语种：English
出版社：IJAEM JOURNAL
摘要：The virtual synchronous generator (VSG) control which enables inverter-interfaced distributed generators (DGs) to possess inertia like synchronous generators (SGs) provides a promising solution to the lack of inertia of a future power grid. The energy buffer emulating the kinetic energy variation is essential to this technique. In this study we propose a new control scheme for a smart motor i.e., a back-to-back motor drive system which temporarily utilizes the kinetic energy stored in rotating loads. With this system significant frequency regulation support can be achieved through merely a control mechanism update and without any dedicated energy storage system. To achieve it the VSG control is applied to the grid side converter of the back-to-back motor drive system and a coordinated control between the VSG control and the motor speed control is proposed. The proposed coordinated control has a faster frequency support response and a lower sensitivity to grid voltage unbalance and distortion than previous control schemes based on frequency measurement. The parameter tuning of the proposed control is discussed based on stability analyses and verified by simulation studies. The effectiveness of suppression of grid frequency fluctuation by the proposed system is verified through experimental results obtained with a commercial blower.
