Modeling and control of a solar-thermal dish-stirling coupled PMDC generator and battery based DC microgrid in the framework of the ENERGY NEXUS

Dhaked, Dheeraj Kumar; Birla, Dinesh

doi:10.1016/j.nexus.2022.100048

Cited by 12 publications

(4 citation statements)

References 31 publications

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“…From the above results of both simulation and experimental work, it can be stated that the proposed closed loop approach shows superior performance over the traditional scheme for improving multiple important practical aspects of qZSI under isolated variable loading conditions. Therefore, the inverter with proposed control logic can be used for supplying AC load powers from DC microgrid and other applications [23,24]. Table 6 presents comparative performances.…”

Section: Simulation Studymentioning

confidence: 99%

Adaptive shoot-through duty ratio control methodology of stand-alone quasi Z-source inverter

Gayen,

Dhara,

Das

et al. 2023

Eng. rev. (Online)

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This paper presents an adaptive shoot-through duty ratio control methodology for a stand-alone three-phase quasi-Z-source inverter (qZSI). In practice, variable active and reactive load powers must be met by a qZSI-based stand-alone system. In this context, existing shoot-through control schemes for qZSI adjust the capacitor voltage or DC-link voltage at a fixed reference value. This causes extra voltage stresses on switches, high distortions, and an operating range reduction of the power inverter under variable load demands. On the contrary, the proposed shoot-through control scheme adjusts the shoot-through duty ratio adaptively based on load voltage feedback to improve performances. In this logic, the controllable shoot-through duty ratio facilitates various improved features in comparison to conventional schemes under load power variations. These features include reduced voltage stress across the switches, reduced distortions, and an extended operating range. The suggested proportional-integral (PI)-based scheme has a single control loop with a single measured quantity, i.e., sensing of load voltage only. The proposed concept has been verified via both simulation and experimental studies.

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Section: Simulation Studymentioning

confidence: 99%

Adaptive shoot-through duty ratio control methodology of stand-alone quasi Z-source inverter

Gayen,

Dhara,

Das

et al. 2023

Eng. rev. (Online)

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“…Among these, solar photovoltaic (PV) technology has advanced significantly during the recent years [5,6]. So far, it is one of the most imaginative developments, with the highest probability of dominating the Renewable Energy (RE) market [7]. Because of their low maintenance, zero pollution, and low-noise characteristics, PV systems have a wide range of applications, including solar vehicles, streetlights, and other hybrid energy systems [8,9].…”

Section: Introductionmentioning

confidence: 99%

The Combined Effect of Current Boosting and Power Loss on Photovoltaic Arrays under Partial Shading Conditions

Mas’ud

2023

Eng. Technol. Appl. Sci. Res.

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This study proposes a novel technique for improving the performance of photovoltaic (PV) arrays under Partial Shading Conditions (PSCs). A 4×4 solar PV array with 16 panels was considered. Bridge-Linked (BL), Total Cross-Tied (TCT), Honey Comp (HC), One Cross-Link (OCL), and Two Cross-Link (TCL) were among the topologies of interest. First, the combined effect of connecting switches and partial shading on the PV array was studied. Then, the power loss/gain caused by reconfiguring the PV array structure from Series-Parallel (SP) to other schemes was investigated. Finally, a method of boosting current into the PV array is proposed to reduce PSCs-related power losses in the connecting switches. The results show that the number of connecting switches in the topology plays an important role in determining power gain or loss at different partial shading levels. TCT and HC outperformed the others in terms of power improvement when PSCs were considered without current boosting. This is true for different levels of solar irradiation exposure. The SP topology is optimal when the solar irradiation level is greater than 900W/m2 or less than 200W/m2. TCT outperformed the others when the current was boosted in the PV array, with a power improvement of 108%, for certain PSCs.

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“…Water pumps facilitate the movement of water through pipes, tanks, or treatment facilities, using several technologies such as centrifugal, volumetric, and helical pumps [2][3][4]. Solar panels generate DC voltages to drive permanent magnet DC motors coupled to the pump shaft or can be converted to single or three-phase AC through inverters [5][6][7][8]. For the latter, multilevel topologies with suitable controls mitigate the problems of handling high input DC-bus voltage and power quality.…”

Section: Introductionmentioning

confidence: 99%

A Single Stage Photovoltaic Solar Pumping System based on the Three Phase Multilevel Inverter

Nouaiti,

Reddak,

Boutahiri

et al. 2023

Eng. Technol. Appl. Sci. Res.

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This paper presents a study of a single-stage DC-AC converter for a solar water pumping application. The topology was based on solar panels connected to a new structure of a three-phase multilevel inverter through DC-bus capacitors. The inverter offers simplicity, requires fewer components compared to conventional ones, and provides optimal voltage and current waveforms with reduced harmonics, eliminating the need for filters. The applied control technique aimed to stabilize the input DC-bus voltage, extract the maximum power using a simple MPPT algorithm, and enhance the efficiency of the water pump through scalar V/f control, regardless of weather changes. A simulation was conducted using the PSIM software, considering a variable daily climate scenario. The results obtained demonstrate the efficiency of the system in extracting energy with optimal torque and current for the pump compared to a classic design based on a three-phase H-bridge inverter.

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Modeling and control of a solar-thermal dish-stirling coupled PMDC generator and battery based DC microgrid in the framework of the ENERGY NEXUS

Cited by 12 publications

References 31 publications

Adaptive shoot-through duty ratio control methodology of stand-alone quasi Z-source inverter

Adaptive shoot-through duty ratio control methodology of stand-alone quasi Z-source inverter

The Combined Effect of Current Boosting and Power Loss on Photovoltaic Arrays under Partial Shading Conditions

A Single Stage Photovoltaic Solar Pumping System based on the Three Phase Multilevel Inverter

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