Battery Energy Support to Cascaded H-Bridge Converter-Fed Large-Scale PV System During Unbalanced Power Generation

Nayak, Subhasis; Das, Anandarup; Torres-Olguin, Raymundo E.; D’Arco, Salvatore; Guidi, Giuseppe

doi:10.1109/tia.2022.3200648

Cited by 11 publications

(2 citation statements)

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“…Therefore, the CHB is connected to the main grid, and it operates as an active rectifier to provide the difference in power needed for battery charging. One of the advantages of this configuration relies on the possibility of splitting the storage system into smaller units each of which is connected to the separate dc-links of the CHB circuit, leading to a distributed storage system [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…The authors of [7] are the same as [4], so the same issue of unbalanced power distribution among the HBs of hybrid BESS in a single-phase CHB/MMC inverter is considered by taking into account the effect of the capacitor voltage ripple of each sub-module in the multilevel configuration. In [8] a PV module-level threephase CHB inverter with an integrated BESS is proposed with the same goal of [6] or rather the smoothing of PV intermittency and the compensation of PV unbalance.…”

Section: Introductionmentioning

confidence: 99%

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Inverter Operation Mode of a PhotoVoltaic Cascaded H-Bridge Battery Charger

et al. 2023

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The paper deals with a grid-connected single-phase battery charger integrated with photovoltaic generators (PVGs). The circuit topology consists of a multilevel architecture based on a Cascaded H-Bridge (CHB) rectifier. Its main task is to charge the batteries, primarily from the PVGs, by also assuring to keep their state-of-charge (SOC) balanced. Nevertheless, when the battery SOC overcomes a predefined upper limit, beyond which the charging process could be interrupted, the available PV power can no longer be transferred to the batteries. Therefore, to avoid an undesired curtailment of PV power production, this latter can be supplied to the grid by inverting the system operation. The paper shows how to achieve this result by implementing a dedicated control action based on a multi-step procedure. Numerical investigations are carried out on a 19-level CHB converter implemented in the PLECS environment to validate the feasibility and effectiveness of the proposed control technique.

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