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This paper develops a robust tool for the treatment of AC side stability problems occurring in interconnecting PWM voltage source converter with passive LCL filter. An LCL filter can reduce the harmonics introduced by PWM switching frequency and guarantee low currents THD using small component values comparing to the L filter solution. Nevertheless, the additional poles introduced by the LC part induce...
Thanks to the impedance criteria, details of an analytical method allowing the stability analysis of an electric system constituted by a resonant LfCf input filter connected to a controlled DC-to-DC buck converter is presented. The considered system is analyzed by using small-signal linearization around the operating point of the converter and presented in frequency domain. Based on the resonant L...
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