The Role of Power Electronics in Future Low Inertia Power Systems



  Inertia plays an essential role in maintaining the frequency stability of power systems. Nevertheless, the increase of power electronics-based renewable generation can dramatically reduce the inertia levels of modern power systems. This issue has already challenged the control and stability of small-scale power systems. It will soon be faced by larger power systems as the trend of renewable integration continues. In this seminar, I will give a review of emerging power electronics-based inertia enhancement techniques. Among these techniques, inertia emulation by wind turbines has successfully demonstrated its effectiveness and will receive widespread adoptions. In addition, virtual inertia emulated by the DC-link capacitors of power converters has great potentials due to its low cost. The same concept can also be applied to ultracapacitors. Moreover, batteries such as those used for vehicle-to-grid can serve as an alternative inertia supplier. In future power systems where most of the generators and loads are connected via power electronics, virtual synchronous machines will become the main inertia provider. In general, it is concluded that advances in semiconductors and control promise to make power electronics an enabling technology for inertia control in future power systems.



Yi Tang (S10-M14-SM18) received the B.Eng. degree in electrical engineering from Wuhan University, Wuhan, China, in 2007 and the M.Sc. and Ph.D. degrees from the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, in 2008 and 2011, respectively.

From 2011 to 2013, he was a Senior Application Engineer with Infineon Technologies Asia Pacific, Singapore. From 2013 to 2015, he was a Postdoctoral Research Fellow with Aalborg University, Aalborg, Denmark. Since March 2015, he has been with Nanyang Technological University, Singapore as an Assistant Professor. He is the Cluster Director of the Advanced Power Electronics Research Program at the Energy Research Institute, Nanyang Technological University.

Dr. Tang was a recipient of the Infineon Top Inventor Award in 2012, the Early Career Teaching Excellence Award in 2017, and four IEEE Prize Paper Awards. He serves as an Associate Editor for the IEEE Transactions on Power Electronics (TPEL) and the IEEE Journal of Emerging and Selected Topics in Power Electronics (JESTPE).



  唐博士于2012年获得英飞凌顶级发明家奖,2017年获得早期职业教学卓越奖和四项IEEE论文奖,目前担任IEEE Transactions on Power Electronics IEEE Journal of Emerging and Selected Topics in Power Electronics副主编。



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