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The DC onboard microgrid of a More Electric Aircraft (MEA) comprises of multiple Point Of Load (POL) converters to cater to diverse loads at different voltage levels. Lightly damped LC filters are typically used at the inputs of these POLs to reduce the noise in the system. Any tightly regulated POL acts like a Constant Power Load (CPL) and exhibits negative incremental impedance. The interaction...
Tightly controlled power electronic converters connected to a DC microgrid behave as Constant Power Loads (CPLs) and they have the potential to induce voltage oscillations at the DC bus. These oscillations become more probable in the presence of lightly damped L-C filters at the input of CPLs. The oscillations can be damped by inserting appropriate virtual impedances in the DC microgrid. It has been...
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