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The penetration factor of back-to-back (BTB) voltage-sourced converter (VSC) based HVDC system, will be high enough and promising if they do not only make the overall system more vulnerable but also maintain the desired function in any circumstances like fault conditions. This paper proposes two different control structures which yield to suppress the DC link voltage oscillations of these interface components in case of power systems disturbances. The shortcomings of previous methods are highlighted which is mainly due to the relatively low switching frequency operation of these high power devices. The comprehensive analytical design procedure will be presented for both controllers and performance of them are verified and evaluated through simulation.
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Parkhideh et al. (2009) studied this question.
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