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Second-order generalised integrator or resonant integrator (RI) has wide range of applications. Forward and backward Euler's approximation based two integrator realisation of RI is an easily implementable frequency adaptive method. However, it suffers from resonant frequency deviation due to discretisation. The discretisation methods that lead to accurate realisation of RI require online calculation...
Use of LCL filter along with a voltage source inverter (VSI) requires damping of resonance. Active damping (AD) methods are preferable compared with passive damping methods from efficiency point of view. Recent researches show that achieving stable operation of a grid connected VSI with LCL filter at a low switching frequency to resonance frequency ratio can cause instability. In this study a resonant...
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