Photovoltaic array reconfiguration to extract maximum power under partially shaded conditions

Saravanan, S.; Kumar, Rajesh; Prakash, Abhineet; Chinnadurai, T.; Tiwari, Ramji; Prabaharan, Natarajan; Babu, B. Chitti

doi:10.1016/b978-0-12-817774-7.00008-9

Cited by 12 publications

(6 citation statements)

References 26 publications

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“…Check for convergence criteria: is sensitivity s greater than the threshold or not? If (i) No, Update velocity and particle position by using (6) and (7). set u = 1 to start next iteration and repeat the…”

Section: Steps To Implement the Proposed Gmppt Techniquementioning

confidence: 99%

“…The output of PV modules is affected by atmospheric conditions, and the current vs voltage (I‐V) characteristics are nonlinear. When several modules are connected in series or parallel arrangement in an array to get the required current and voltage, the power vs voltage (P‐V) curve becomes multipeak under partially shaded conditions (PSC) and single peak in uniform irradiance conditions 5‐7 as shown in Figure 1. To get maximum power from nonlinear PV sources under all weather conditions, several MPPT techniques are proposed in the literature, which includes conventional 8,9 and artificial intelligence (AI)‐based MPPT techniques 10 .…”

Section: Introductionmentioning

confidence: 99%

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A hybrid global maximum power point tracking method based on butterfly particle swarm optimization and perturb and observe algorithms for a photovoltaic system under partially shaded conditions

Mathi

Chinthamalla

2020

Int Trans Electr Energ Syst

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Background: In this paper, a new hybrid global maximum power point tracking (GMPPT) technique is proposed for faster and accurate tracking of global maximum power point (GMPP) without premature convergence. It is a combination of modified particle swarm optimization (PSO) and perturb and observe (P&O) methods. The proposed GMPPT technique, adaptive butterfly PSO (ABF-PSO) uses butterfly swarm intelligence for modifying the conventional PSO algorithm with parameter tuning to avoid premature convergence. Aims: Hybrid global maximum power point tracking (GMPPT) technique is proposed for faster and accurate tracking of global maximum power point (GMPP) without premature convergence. Further, a new reinitialization of particles for any irradiance change is proposed to get faster tracking. Materials & Methods: In the proposed hybrid GMPPT technique, first GP region is easily identified with adaptive sensitivity parameter of the ABF-PSO algorithm and in the region identified, GMPP tracking is continued with P&O algorithm with variable length perturbations to avoid the unnecessary exploration of search space even after reaching global peak (GP) region. Results: The combined effect of adaptive parameters, global region identification with adaptive sensitivity, proposed reinitialization method, and steadystate tracking with variable step P&O results in fast and accurate tracking of GMPP with low power oscillations during GP region identification stage and steady-state.

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Section: Steps To Implement the Proposed Gmppt Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A hybrid global maximum power point tracking method based on butterfly particle swarm optimization and perturb and observe algorithms for a photovoltaic system under partially shaded conditions

Mathi

Chinthamalla

2020

Int Trans Electr Energ Syst

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“…The popular soil moisture sensor type is a frequency domain sensor, such as a capacitance sensor for commercial use. The neutron moisture gauge is another sensor that uses the water moderator properties of neutrons [15]- [17].…”

Section: H Soil Moisture Sensormentioning

confidence: 99%

Performance Assessment of Solar Powered Smart Drip Irrigation System using Arduino

Pugalhanthi,

Kumar,

Kumar

et al. 2019

IJEAT

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In the agriculture field, the method of irrigation and its proper usage is more important and it is well known that a very economical and efficient method is drip irrigation. The continuous monitoring of the soil and weather condition has to be done by the farmer in favour of growth of crops in conventional drip irrigation system. In this proposed system, the soil and weather condition of the field are monitored by the moisture as well as temperature sensor. The values from the temperature and moisture sensors are sensed and the signal is sent to the Arduino IDE controller which is powered by solar energy and thus the present values are compared with predefined values. According to value of the temperature and moisture, the crops can be supplied with the required amount of water. In the liquid crystal display, the sensed values of the temperature and moisture will be displayed and the user can receive the data through the GSM module.

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“…In the case of BL confirmation, the connection type lies between SP and TCT . Most of the passive techniques (like TCT and BL) require extra conductors, which adds to the cost as well as implementation constraints . This is why, for most residential and commercial implementations, SP technique is used with many implementations relying on conventional string‐based topologies …”

Section: Introductionmentioning

confidence: 99%

Analysis on inverter selection for domestic rooftop solar photovoltaic system deployment

Ali

Khan

2020

Int Trans Electr Energ Syst

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Summary Partial shading is a common occurrence in residential and commercial photovoltaic (PV) installations. It causes mismatch losses, particularly in string and central inverter‐based systems, leading to output power loss and in turn lower performance ratio under partial shading conditions. The choice of string configuration itself is critical in lowering mismatch losses and the levelized energy cost. While a range of commercial inverters with different string configurations and prices are available, many standard string topologies are not optimum for common settings under various shading scenarios. Therefore, in this article, we evaluate various string configurations attached to state‐of‐the‐art commercial inverters widely used in the industry from both mismatch loss and cost perspective. We quantify the impact of various shading scenarios on multiple inverter configurations to ascertain the relative performance of PV systems under symmetrical shading as well as random shading in field settings. For multiple PV system configurations (on a single rooftop), the mismatch loss varied up to 2.3% and 6% under symmetrical shading and field settings, respectively. The levelized cost of electricity also varies from 0.062$/kWh to 0.041$/kWh and is dependent on the type of inverter and string configurations.

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Photovoltaic array reconfiguration to extract maximum power under partially shaded conditions

Cited by 12 publications

References 26 publications

A hybrid global maximum power point tracking method based on butterfly particle swarm optimization and perturb and observe algorithms for a photovoltaic system under partially shaded conditions

A hybrid global maximum power point tracking method based on butterfly particle swarm optimization and perturb and observe algorithms for a photovoltaic system under partially shaded conditions

Performance Assessment of Solar Powered Smart Drip Irrigation System using Arduino

Analysis on inverter selection for domestic rooftop solar photovoltaic system deployment

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