Space Vector Modulation For Dc-Link Current Ripple Reduction In Back-To-Back Current-Source Converters For Micro Grid Applications



The objective of this paper is to reduce the current ripple of back-to-back current source converter by optimizing the gate pattern of space vector modulation (SVM). A large ripple will cause the electromagnetic interference, undesirable high-frequency losses, and system instability. Conventionally, with a given switching frequency and rated voltage, the current ripple can be reduced by increasing the dc-link inductor, but it leads to bulky size, high cost and slow dynamic response. In order to solve this problem, this paper reveals that the current ripple can be significantly reduced by adjusting the gate patterns of space vector modulation (SVM) between the rectifier and inverter in a back-to-back converter

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