2015 IEEE Applied Power Electronics Conference and Exposition (APEC) 2015
DOI: 10.1109/apec.2015.7104590
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Fractionally rated transformer-less unified power flow controllers for interconnecting synchronous AC grids

Abstract: Recently, a novel transformer-less unified power flow controller (T-UPFC) has been proposed. The T-UPFC is a suitable candidate for performing power flow control in interconnected synchronous AC grids. By means of analytical expressions, this paper provides the overall device power rating of such a system when used to control power flow through the line to its limit. By means of these results, it is shown that the ratings of T-UPFC are only a fraction (two tenths) of that of back-to-back VSC based HVDC convert… Show more

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Cited by 6 publications
(3 citation statements)
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“…For example, a series-type DeCaFp topology (i.e., the very first topology in Fig. 6) can serve as an energy router to transmit energy over a time period of T from CP1 to CP2 with only fractionally rated converters [69] for some cases. This series energy router works even when/where CP1 and CP2 have different voltages and frequencies.…”
Section: B Proposed Advancements In Nsf and Decafp Technologiesmentioning
confidence: 99%
See 1 more Smart Citation
“…For example, a series-type DeCaFp topology (i.e., the very first topology in Fig. 6) can serve as an energy router to transmit energy over a time period of T from CP1 to CP2 with only fractionally rated converters [69] for some cases. This series energy router works even when/where CP1 and CP2 have different voltages and frequencies.…”
Section: B Proposed Advancements In Nsf and Decafp Technologiesmentioning
confidence: 99%
“…The shunt CMI injects a current I S , which ensures no active power exchange in either CMI, thereby eliminating the need for transformers. This is done by making the series ( I C ) and shunt ( I S ) CMI currents perpendicular to their respective voltages V C and V S [41], [69]. Thus, the values of the control commands for the series CMI ( V C = 0.35∠83.1 • p.u.)…”
Section: Advanced Control At Device-level Power Electronics and A Cas...mentioning
confidence: 99%
“…The size and cost of a conventional UPFC are further reduced in a transformer-less UPFC. The main advantage of a transformer-less UPFC over a conventional UPFC is the complete removal of interfacing transformers, reducing its size and cost significantly [17,18]. Figure 2 shows the structure of a transformer-less UPFC.…”
Section: Introductionmentioning
confidence: 99%