Power Flow Control and Analysis of Transformerless Upfc

SATHISH VOGGU, YERRA SREENIVASA RAO

Abstract


In this paper, operation and investigation for an enhanced transformer-less unified power flow controller (UPFC) is introduced. As is well-known, the generalized UPFC that consists of two back to back inverters requires bulky and often complicated zigzag transformers for isolation and reaching high power rating with desired voltage waveforms. To overcome this problem, a completely transformer-less UPFC Dr. YERRA SREENIVASA RAO based on innovative configuration of two cascade multilevel inverters (CMIs) has been proposed in [1]. The advantages of the enhanced UPFC incorporate, other than the upsides of transformer-less UPFC officially had, same usefulness of unique structure, no more equipment required, more adaptable operation and less converter rating. This paper presents rating examination and operation rule for this new transformer less UPFC.


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