Circulating Current Analysis and Suppression for Module Grid-Connected Inverters Under Unbalanced Conditions
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Access"
DOI: 10.1109/access.2018.2877955
Abstract: Parallel photovoltaic inverters system can increase the power rating and efficiency. However, the zero-sequence circulating current (ZSCC) will be generated under unbalanced conditions. Therefore, this paper proposes a ZSCC control scheme for the M-paralleled (… read more here.
Keywords: inverters unbalanced; analysis; circulating current; filter parameters ... See more keywords
Minimization of DC-Bus Current Ripple in Modular Multilevel Converter Under Unbalanced Conditions
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DOI: 10.1109/tpel.2016.2630921
Abstract: In a modular multilevel converter (MMC), the zero-sequence currents at twice the fundamental frequency and its multiples flow through the dc bus and cause dc-bus power fluctuations during unbalanced conditions. These fluctuations appear in dc-bus… read more here.
Keywords: zero sequence; modular multilevel; unbalanced conditions; bus current ... See more keywords
The Predictive Closed-Loop Averaging Control of MMC Phase-Unit Losses Under Unbalanced Conditions
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Power Delivery"
DOI: 10.1109/tpwrd.2018.2868772
Abstract: This paper introduces an averaging control strategy of the phase-unit losses of modular multilevel converters (MMCs). The quantitative analysis of the MMC phase-unit loss distribution under unbalanced ac conditions is carried out by investigating the… read more here.
Keywords: control; unbalanced conditions; unit losses; phase unit ... See more keywords
Performance Improvement of AC-DC Power Converters under Unbalanced Conditions
Sign Up to like & getrecommendations! Published in 2019 at "Scientia Iranica"
DOI: 10.24200/sci.2019.53337.3254
Abstract: In this paper, a single synchronous reference-frame based control method is proposed to improve the performance of AC-DC interlink converters feeding DC loads under unbalanced AC grid conditions. Unbalanced grid voltages cause undesirable double frequency… read more here.
Keywords: performance improvement; link voltage; unbalanced conditions; method ... See more keywords