MMC-PV System with dc-link integrated battery energy storage system

Barcellona, Simone; Barresi, Marzio; Colnago, Silvia; Piegari, Luigi

doi:10.1109/cpe-powereng50821.2021.9501215

Cited by 3 publications

(7 citation statements)

References 20 publications

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“…The leg impedance, Z leg , depends on the arm inductor resistance, R arm ; inductance, L arm ; and mutual coupling, M arm ; while the DC-side capacitor impedance depends on its equivalent series resistance, R dc , and its capacitance, C dc . Lastly, through solving (18), the AC circulating currents can be computed, and the power losses due to such currents can be derived as follows:…”

Section: Dpme Control Strategymentioning

confidence: 99%

“…The leg impedance, leg Z , depends on the arm inductor resistance, Rarm; inductance, Larm; and mutual coupling, Marm; while the DC-side capacitor impedance depends on its equivalent series resistance, Rdc, and its capacitance, Cdc. Lastly, through solving (18), the AC circulating currents can be computed, and the power losses due to such currents can be derived as follows: It is worth noting that, since the analysis between the DPME and CPME control strategies is focused on the fundamental AC circulating components needed to face arm partial shading conditions, only such current components were considered for the power loss evaluation.…”

Section: = − +mentioning

confidence: 99%

“…In this case, the zero-sequence component of the AC circulating currents is forced to be zero (no DC-side capacitor). For instance, in case there is an arm active power mismatch in just one converter leg, unlike in (18), the circulating currents of the other two legs will not be zero. Specifically, they will be phase-shifted by about 90 • with respect to their related output phase grid voltages, involving just an exchange of reactive power.…”

Section: Cpme Control Strategymentioning

confidence: 99%

“…In any case, different solutions to interface many PV modules/strings/arrays based on MMC were proposed and analyzed in the literature. It is possible to interface the whole PV system to the DC side of the MMC, as reported in [14], interface the PV subgroups to each SM of the MMC through dedicated DC-DC converters, as reported in [15,16], or directly to the submodule capacitors of the MMC, as reported in [17,18], for low-voltage systems. On the other hand, in [14], the same issues of the central inverter structure occur.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, in [14], the same issues of the central inverter structure occur. In [15][16][17][18], a DMPPT tracker could be adopted with the advantages related to that solution. However, the internal converter power mismatch should be opportunely managed under partial shading conditions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Sizing Procedure for the DC-Side Capacitor of a Three-Phase Modular Multilevel Converter

Barcellona,

Barresi,

Piegari

2023

Energies

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The integration of photovoltaic (PV) modules with a modular multilevel converter (MMC) is very interesting because it allows us to exploit the intrinsic advantages of that converter, such as modularity and high voltage quality, and to implement distributed maximum power point tracking algorithms. The latter can appropriately be performed through controlling the circulating currents. In the literature, some control strategies for both the AC and DC circulating currents were proposed to manage the power mismatch among the legs and between the arms of the MMC. In a previous work, the authors proposed a novel control strategy for the circulating current components and inserted a capacitor on the DC side of a three-phase MMC with integrated PV panels. In the present work, it is shown how the correct sizing of this capacitor is essential to optimize the AC circulating voltages and minimize converter losses. A sizing procedure is proposed, deeply analyzed, and validated through numerical simulations.

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Section: Dpme Control Strategymentioning

confidence: 99%

Section: = − +mentioning

confidence: 99%

Section: Cpme Control Strategymentioning

confidence: 99%