PV Solar Energy Electronics Processing System Operating at the MPP for Commercial Refrigerator Supply Applications

Martins, Denizar Cruz; Silva, D.P. da; Andrade, Abinadabe S.; Bottion, Antonio Jose Bento; Souza, Kleber C. A. De

doi:10.1109/pesc.2005.1581627

Cited by 1 publication

(1 citation statement)

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“…In the grid-connected PV system, DC-AC converters (inverters) need to realize the grid interconnection, inverting the dc current that comes from the PV array into a sinusoidal waveform synchronized with the utility grid [2,3]. Besides, the DC-AC converter is used to stabilize the dc-bus voltage to a speci�c value, because the output voltage of the PV array varies with temperature, irradiance, and the effect of MPPT (maximum power point tracking) [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. e DC-AC conversion systems, depending on its topology, can be classi�ed as presented as follows [24,25].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Three-Phase Grid-Connected PV Power System Using a Modified Dual-Stage Inverter

Martins

2013

ISRN Renewable Energy

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is paper presents a grid-connected PV system in a centralized con�guration constructed through a three-phase dual-stage inverter. For the DC-DC stage the three-phase series resonant converter is chosen thanks to the advantages that it exhibits. However, it is inadequate for the accomplishment of MPPT, due to its efficiency strongly depending on the implemented deadtime and switching frequency. en, this paper proposes a conceptual modi�cation, that is, a modi�ed dual-stage inverter in which the inverter stage is responsible for both the MPPT and the grid-current control. In addition, the DC-DC converter operates with constant duty cycle and frequency. Such con�guration requires a new concept, introduced as Behavior Matching. It serves as a fundamental feature for the DC-DC converter to reproduce the PV array I-V characteristic when they are connected, without control action. e maximum power operating point is found by maximizing the direct axis current, obtained by Park's transformation from the inverter, through the perturbation and observation algorithm. Any speci�c measurement to realize the MPPT is needed. e galvanic isolation is achieved by using a high-frequency transformer. e structure is appropriate for high power applications, above 10 kW.

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Section: Introductionmentioning

confidence: 99%

Analysis of a Three-Phase Grid-Connected PV Power System Using a Modified Dual-Stage Inverter

Martins

2013

ISRN Renewable Energy

View full text Add to dashboard Cite

show abstract

PV Solar Energy Electronics Processing System Operating at the MPP for Commercial Refrigerator Supply Applications

Cited by 1 publication

References 2 publications

Analysis of a Three-Phase Grid-Connected PV Power System Using a Modified Dual-Stage Inverter

Analysis of a Three-Phase Grid-Connected PV Power System Using a Modified Dual-Stage Inverter

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