Reduced scale PHIL emulation concepts applied to power conversion systems with battery storage
Résumé
This paper deals power hardware in the loop (PHIL) real time simulation (also called emulation) of electric power conversion systems, especially the ones involving battery storage. A case study related to a wind turbine power conversion system hybridized with a lithium-ion battery illustrates the main concepts. A similitude reduction process is presented to scale the model parameters in order to fulfill the sizing of a reduced scale test bench allowing to achieve the PHIL real time emulation. The original “time compression” concept is also reminded. However, the main contribution of this paper is the comparison between two concepts of real time emulated devices (RTED) depending on whether these concepts are based on a model (“model based” RTED) or on a physical image of the actual device (“image based” RTED). Advantages and drawbacks of both concepts are discussed based on experimental results.
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