Control of a combined photovoltaic/thermal energy system

Jardan, R.K.; Nágy, I.; Barabas, R.

doi:10.1109/icit.2003.1290820

Cited by 5 publications

(6 citation statements)

References 2 publications

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“…The power G-semigyrator shown in Figure 2 consists of a switching converter which is controlled by means of a sliding-mode regulation loop whose switching surface is given by S(x) = i2 -gV1. In steady-state S(x) = 0, i.e., I2 = gVI (2) which automatically implies I, = gV2 since the converter in Fig. 2 is lossless, therefore it is a POPI structure (power-outputpower-input).…”

Section: Bmentioning

confidence: 98%

“…The research work aimed at improving the performance of the combined PV / T panels resulted in constructions that offer an increase in the overall efficiency and reduction of the production cost. A more detailed description is found in the literature [2]. In one of the versions developed, the thermal part of the construction is built by using transparent plastic layers with cellular inner walls where working medium (WM) is circulated.…”

Section: Description Of the System Studiedmentioning

confidence: 99%

“…A more detailed block diagram of a Matlab / Simulink model developed for studying the energy balance in a system is presented in [2]. The block diagram includes three basic models: Battery, PV cells and the charge controller incorporating the voltage controller.…”

Section: Bmentioning

confidence: 99%

“…The analog multiplication is performed by the IC AD835 whose two inputs are proportional to the current and voltage of the PV array respectively. The output of the analog multiplier provides a signal proportional to the PV panel power, which is then differentiated by a linear circuit of two operational amplifiers implementing the transfer function DL(s) = k' K Td s+l 2z (3) 2 where Td has been tuned to TMPPT, TMPPT being the 8 oscillation period around the maximum power point that characterizes the MPPT behavior. It can be observed that DL(S) is a pure differentiator for signals with frequency contents below 2W/lTd.…”

Section: Bmentioning

confidence: 99%

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Combined Photovoltaic / Thermal Energy System for Stand-alone Operation

Jardan

Nágy

Cid-Pastor

et al. 2007

2007 IEEE International Symposium on Industrial Electronics

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The utilization of solar energy can be made by photovoltaic (PV) cells to generate electric power directly and solar thermal (T) panels can be applied to generate heat power. When the utilization of the solar energy is necessary to generate electric power, the option of using T panels in combination with some heat/ electric power conversion technology can be a viable solution. The power generated by utilizing the solar energy absorbed by a given area of solar panel can be increased if the two technologies, PV and T cells, are combined in such a way that the resulting unit will be capable of co-generation of heat and electric power. In the present paper combined Photovoltaic / Thermal panels are suggested to generate heat power to produce hot water, while the photovoltaic part is used to obtain electric power mainly for covering the electric power consumption of the system, to supply the electronic control units and to operate pump drives etc. Ac and dc supplies are provided by converters for covering selfconsumption and possibly the need of some household appliances. The development and design of the system is made by extensive use of modeling and simulation techniques. In the paper a part of the simulation studies, carried out to determine the energy balance in the electric energy conversion section of the system and the control structure, assuming stand-alone operation is presented.

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Section: Bmentioning

confidence: 98%

Section: Description Of the System Studiedmentioning

confidence: 99%

Section: Bmentioning

confidence: 99%

Section: Bmentioning

confidence: 99%

See 2 more Smart Citations

Combined Photovoltaic / Thermal Energy System for Stand-alone Operation

Jardan

Nágy

Cid-Pastor

et al. 2007

2007 IEEE International Symposium on Industrial Electronics

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“…The design method for the appropriate selection of a stand-alone photovoltaic power system for residential application in the absence of utility power supply is shown in [6]. Modeling of a combined photovoltaic and thermal energy system is presented in [7]. A comparative analysis of solar PV street lighting system in three different lamps is illustrated in [8].…”

Section: Introductionmentioning

confidence: 99%

Savings of Electricity Consumption Cost in Commercial Sector of Bangladesh

Chowdhury¹

2013

IJIMT

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Photovoltaic-thermal (PVT) technology: Review and case study

Ramos

Alcaso

Cardoso

2019

IOP Conf. Ser.: Earth Environ. Sci.

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Nowadays, solar technology converts solar energy into electricity and heat separately. For electricity generation, the main obstacle is the fact that the photovoltaic cells produce less energy as the temperature increases. To overcome this, cooling techniques can be used to raise the efficiency of solar cells, in order to obtain greater power generation. The photovoltaic-thermal hybrid solar collector (or PVT) is an equipment that integrates a photovoltaic (PV) module, for the conversion of solar energy into electrical energy, and a module with high thermal conversion efficiency (T), which employs a thermal fluid. This optimization of solar conversion technology has the main objective of cooling the photovoltaic cells, for increased generation of electricity, while also resulting in useful thermal energy from the working fluid, therefore constituting a cogeneration equipment. The present work reviews the development and global panorama of PVT technology. Afterwards, a case study of a PVT system is presented, together with a theoretical and experimental study. A thermography analysis performed in this PVT system is also examined, which allows for a real-time study of its operating regimes in different conditions, mainly of its thermal behaviour, and for the diagnosis of hot spots that signal potential defects in the cells.

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Control of a combined photovoltaic/thermal energy system

Cited by 5 publications

References 2 publications

Combined Photovoltaic / Thermal Energy System for Stand-alone Operation

Combined Photovoltaic / Thermal Energy System for Stand-alone Operation

Savings of Electricity Consumption Cost in Commercial Sector of Bangladesh

Photovoltaic-thermal (PVT) technology: Review and case study

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