Review and comparative study of single-stage inverters for a PV system

Ankit, .; Sahoo, Sarat Kumar; Sukchai, Sukruedee; Yanine, Franco Fernando

doi:10.1016/j.rser.2018.04.063

Cited by 73 publications

(13 citation statements)

References 72 publications

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“…The different constants used are found in Tables II and III. The values in Table II are based on the descriptions in literature [11,18,20] and available inverter specifications in the market.…”

Section: A Economic Modelmentioning

confidence: 99%

“…Currently, there are four types of grid-connected inverter configuration, central, string, multi-string, and module-type inverters. In central inverters, the PV modules are connected in series for higher voltage and these series modules are then connected in parallel for higher capacity making it the type of inverter with the highest available voltage and rating [18,19]. These inverters are the cheapest type in the market, however, suffers from losses due to sting diodes, voltage mismatch, PV modules and common MPPT causing to failure for the PV plant because of the central inverter [19,20].…”

Section: Introductionmentioning

confidence: 99%

“…These inverters are the cheapest type in the market, however, suffers from losses due to sting diodes, voltage mismatch, PV modules and common MPPT causing to failure for the PV plant because of the central inverter [19,20]. String inverter, which is the most commonly used type of inverter, have a string of PV modules connected to a single inverter which makes it have a higher efficiency of 1-3% compared to the central inverter type due to the some diode losses eliminated and individual MPPT applied in every string [18,20]. However, string inverter type only have power ratings up to 10kW per string, thus, needing more inverter for higher PV plant capacity.…”

Section: Introductionmentioning

confidence: 99%

“…The multi-string inverter have each PV module string connected to a DC-DC converter whose output is connected to the input of a common inverter. This makes multi-string is a hybrid of the central and the string types because each string can be controlled and monitored individually, has MPPT for every string, allows strings of different technologies but can be unreliable due to a common inverter [18][19][20]. Lastly, the module-type inverter or most commonly known as micro-inverter has an inverter connected to each PV module which makes this type have the least losses, longer life, individual module failure detection, easier to expand, and deals with partial shading.…”

Section: Introductionmentioning

confidence: 99%

“…Lastly, the module-type inverter or most commonly known as micro-inverter has an inverter connected to each PV module which makes this type have the least losses, longer life, individual module failure detection, easier to expand, and deals with partial shading. On the other hand, the module type has reduced overall efficiency, high cost per kilowatt, low power output, and higher amplification [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Optimal Sizing of PV-Diesel-Battery System Using Different Inverter Types

2021

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Different inverters types have different technical specifications and costs which contribute to the changes of inverter type decisions. It is therefore important to know which inverter is more advantageous for certain criteria. In this paper, the central, string, multi-string, and AC module types of inverters were compared through optimally designing a DG-PV and DG-PV-battery system of an off-grid island using each type of inverter. The problem was solved as a multi-objective optimization considering cost and uncertainty. The results were compared in terms of cost, reliability, renewable energy penetration, renewable energy curtailment, and changes in battery cost. The optimization results showed that the string inverter is best in terms of cost and highly affected by the decrease of the battery cost, the AC module in terms of reliability and curtailment, and the multi-string for renewable energy penetration. Meanwhile, the central inverter can be the choice when a balance between cost and reliability is considered.

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Section: A Economic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Optimal Sizing of PV-Diesel-Battery System Using Different Inverter Types

2021

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Application of mathematical morphology for power quality improvement in microgrid

Sahoo

Routray

Rout

2020

Int Trans Electr Energ Syst

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Summary This manuscript presents a novel mathematical morphology‐based shunt active filter (SHAF) for improving the power quality (PQ) in microgrid applications. The proposed approach is more concerned about the integration of renewable energy such as photovoltaic (PV) system and nonlinear load in the grid. On PQ, accuracy, and real‐time application point of view, in the proposed approach, a two‐way control strategy is developed. Firstly, to regulate the duty ratio of a boost converter (BC) and PV performance, a sliding mode control (SMC)–based novel maximum power algorithm (MPA) is proposed. Secondly, to eliminate the nonlinearity selectively, an improved active and reactive current decomposition (IP − IQ) technique is proposed. The improved IP − IQ contains a low pass mathematical morphology filter (LMMF), to extract the fundamental dc component. The proposed approach eliminates the conventional αβ and dq transformation, with the reduced cost of computation and improved tracking speed. To validate the proposed two‐way control strategy, it is simulated through MATLAB software, and the proposed results are compared with the conventional MPA and low pass filter–based dq (CLPF‐dq) approach.

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