Power Electronics – Key Technology for Renewable Energy Systems – Status and Future

摘要

The energy paradigms in many countries (e.g.Germany and Denmark) have experienced a significant changefrom fossil-based resources to clean renewables in the past fewdecades. The scenario of highly penetrated renewables is going tobe further enhanced. This requires that the production,distribution and use of the energy should be as technologicalefficient as possible and incentives to save energy at the end-usershould also be streng-thened. In order to realize the transitionsmoothly and effectively, energy conversion systems, currentlybased on power electronics technology, will again play anessential role. Using highly efficient power electronics in powergeneration, power transmission/ distribution and end-userapplication, together with advanced control solutions, can pavethe way for renewable energies. In view of this, some of the mostemerging renewable energies, e.g. wind energy and photovoltaic,which by means of power electronics are changing character as amajor part in the electricity generation, are explored in thispaper. Issues like technology development, implementation,power converter technologies, control of the systems, andsynchronization are addressed. Special focuses are paid on thefuture trends in power electronics for those systems.