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Power Converters and Control of Renewable Energy Systems
Frede Blaabjerg,Remus Teodorescu,Zhe Chen,Marco Liserre 전력전자학회 2004 ICPE(ISPE)논문집 Vol.- No.-
The global electrical energy consumption is steadily rising and therefore a continous demand to increase the power generation capacity. A significant percentage of the required capacity increase can be based on renewable energy sources. Wind turbine technology, as the most cost effective renewable energy conversion system, will play an important part in our future energy supply. But other sources like microturbines, photovoltaics and fuel cell systems may also be serious contributors to the power supply. Characteristically, power electronics will be an efficient and important interface to the grid for the renewables and this paper will first briefly discuss three different alternative/renewable energy sources. Next, various configurations of small and medium power conversion topologies are presented including their control (mainly for PV-systems). Finally wind turbine configuration and their control are described.
Control of Smart Transformer in Different Electric Grid Configurations
Rongwu Zhu,Giovanni De Carne,Markus Andresen,Marco Liserre 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
The Smart Transformer (ST) can provide DC connectivity and reduce the potential reinforcement in distribution grid caused by the high penetration of distributed renewable generators and EV charging stations. The systematical study of ST in terms of the choice criterion of architecture and topologies, how to mesh the electric grid with ST, and the operation norms and requirements, is still lacking. This paper will introduce aforementioned concerns. Moreover, the control system design of the ST with respect to each configuration of meshed networks is also presented. The simulation results clearly validate the correctness of the control strategies.