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In this study, using concentrated solar energy more efficiently by spectral decomposition approach is introduced. The theoretical analysis is presented for decomposed as spectral concentrated solar radiation and then the potential utility of the system is discussed.
Nowadays, there are several difficulties are met in the selection of appropriate conditions, place of use, and purpose of photovoltaic (PV) systems. The reason is that electrical power output of PV system shows a non-linear variation, unlike other applications, depending on the internal resistance of electrical devices (loads) as well as radiation intensity and environmental temperature. Therefore,...
A solar cell or photovoltaic cell is a device which generates electricity directly from visible light. However, the Gratzel solar cells' efficiency is fairly low. So, it costs expensive according to other energy resources products. There is several factors affect gratzel solar cell efficiency which formed from chlorophyll. This research work is a comparative study between Grätzel chlorophyll solar...
To investigate the ripple current on the output power of solar cells, a testing system is set up to draw triangular currents with different ripples from a solar-cell panel by a boost converter operating from 10 kHz to 100 kHz. The dynamic characteristics of the solar-cell panel are analyzed based on the measured current and voltage waveforms. Experimental results indicate that the output voltage lags...
In January 2009, Toyota City was chosen as Eco-Model City for the realization of low-carbon society. As a transport initiative for an Eco-Model City, Toyota City has installed charging facilities that utilize solar energy in order to promote the usage of eco-cars such as plug-in hybrid electric vehicles. The new solar charging system for Toyota City that combines the solar power storage unit with...
We propose a boost converter for a stand-alone power supply system using single photovoltaic cell with maximum power point tracking based on two strategies.: ultra-low voltage input, operating energy of the boost converter powered by own output. It realized by discrete parts and low power consumption MCU. The boost converter starts at less than 0.4 V. It also starts at 88W/m2 of sunlight radiation...
Solar power is an alternative technology that will hopefully decrease our dependence on petroleum energy sources. However, one major problem with solar panel systems is that the efficiencies for such systems are still poor and the costs per kilo-watt-hour (kWh) are not competitive, in most cases, to compete with petroleum energy sources. Using solar cells to get electrical energy is a complicated...
An anion-conducting polymer (ACP) has been used as an electrolyte material of solid-state dye-sensitized solar cells (DSCs) and the basic electrochemical properties of DSCs have been examined in this study. Initial photocurrent-voltage characteristics of the DSC prepared with ACP (DSC-S) were inferior to those of the DSC prepared with a general liquid electrolyte (DSC-Liq), but DSC-S exhibited better...
This paper proposes photovoltaic (PV) cell booster which amplifies voltage and current in small-size PV cell. The booster simulates large-size PV cell with a flyback converter and a control circuit including variable current source. Principle of proposed PV cell booster is described at first. Prototype of the booster is built and tested to confirm the effectiveness of the PV cell booster.
Since nuclear power plants are shut down and working rate of thermal power plants are increasing, the buying electric rate is going to change in Japan. Although, selling electric rate of photovoltaic system (PV) is now 42 yen/kWh by feed-in tariff, the selling electric rate may drop after 10 years by the expired feed-in tariff. This paper concentrates on the optimum unit size of the PV and the solar...
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