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LCL filter is becoming an attractive choice over conventional L filters for grid-connected voltage source inverters (VSI) due to smaller inductor size and better attenuation of the ripple components in the grid current. The modulation of the VSI generates switched voltages which results in distorted currents. In this paper, a simple closed form analytical expression is derived for the higher order...
This paper presents a systematic step-by-step design procedure for the input filter of a current source rectifier (CSR). The design is based on the specifications of allowable ripple in the input voltage of the CSR and high-frequency harmonic components in the grid current. Analytical techniques have been developed to estimate the ripple present in the input current and to model the converter for...
This paper presents an analysis and comprehensive comparison between the passive filter component requirements of a matrix converter and a DC-link based back-to-back converter. Proper design of the filter components requires the estimation of the switching frequency components present in various voltages and currents. An accurate estimation of different ripple quantities is presented by simple analytical...
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