Radiated electromagnetic field from a solar cell for CISPR radiated emission measurement method

Wada, T.; Mori, T.; Tokuda, Masamitsu; Suenaga, S.; Igarashi, Hajime

doi:10.1109/isemc.2005.1513484

Cited by 15 publications

(8 citation statements)

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“…The cell in the x-zplane, which is also in parallel alignment, showed the second best gain, while the other two configurations showed a 12 dB weaker reaction. Contrary to the findings of Wada et al [1], who assumed the bus bars to give the major contribution and ignored the finger influence, in this case the alignment of the fingers parallel to the dipole leads to higher amplitudes than the parallel alignment of the bus bars. …”

Section: A Sender-receiver Geometrycontrasting

confidence: 95%

“…Given the interaction of the solar modules with power electronic and the power grid, yet unknown problems of electromagnetic compliance may arise. [1][2][3] Several possible mechanisms of the interaction between photovoltaic modules and electromagnetic fields or radiation have to be taken into account: radiation may be received or reflected by the semiconducting devices, or may be conducted to the subsequent power conditioning electronics. In opposite direction system distortion can be emitted to air by solar modules.…”

Section: Introductionmentioning

confidence: 99%

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A Study of the Antenna Effect of Photovoltaic Modules

Drapalik¹,

Schmid²,

Kancsar³

et al. 2010

REPQJ

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Abstract.We have investigated the reaction of photovoltaic cells to external electromagnetic fields in a frequency range of 10 Hz to 1 GHz. Outdoor recordings of received RF noise from the ambient were sampled for different solar cells and modules and compared with the reception of a simple whip antenna which represents a monopole for electromagnetic fields. Additionally in the laboratory well defined signals were generated and their reception was investigated depending on geometrical factors of the cells, such as orientation, size and distance. Two antenna models, namely dipole and patch configuration, are compared with the experimental findings. Simulations for the effect of modulated signals on solar cells were made as well. It was found that the gain in the investigated frequency range increases essentially linear with the cell area similar to patch antennas. A crystalline silicon cell of 100 cm2 has almost the same signal amplification as an 83 cm long whip antenna remaining coarsely constant over the whole frequency range. For narrow frequency bands however the signal attenuation or amplification is strongly modified by the dipole behavior caused by the front metal grid. Simulation shows that demodulation effects are biggest around the MPP, possibly affecting subsequent power conditioning units.

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Section: A Sender-receiver Geometrycontrasting

confidence: 95%

Section: Introductionmentioning

confidence: 99%

A Study of the Antenna Effect of Photovoltaic Modules

Drapalik¹,

Schmid²,

Kancsar³

et al. 2010

REPQJ

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“…The mechanism behind this increase is a simple coupling of electric and magnetic fields with the flow of electrons and holes affecting diffusion and drift. Drapalik et al 15 have predicted >3% increase in the voltage for cells being subjected to <1 GHz frequencies. The mechanism modeled is the use of demodulated power by the diode behavior of the solar cell.…”

Section: Model For Interaction Of Electric Pulses With Semiconductormentioning

confidence: 99%

“…Also, interaction of electromagnetic radiation with PV has been well studied in the past. [12][13][14][15][16] However, these studies are inefficient to significantly enhance efficiency of PV cells. Therefore, development of an efficient technique to capture hot-carriers in solar cells as well as an analytical model to predict the effect of capture are utmost important.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Efficiency of Silicon Photovoltaic Cells Using High Frequency Electric Pulses

Santosh¹,

Naresh²,

Samar³

2016

Nanosci Nanotechnol Lett

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This paper presents a method to enhance the efficiency of silicon photovoltaic (Si PV) cells by creating metastable high energy states in the conduction band of silicon with high frequency electric fields and a theoretical model to predict the appearance of the metastable energy states. The states are generated by the interaction of the oscillating electric field from the high frequency electric pulses with the electrostatic potential equilibrium in the lattice. Dramatic increase in the output energy of c-Si PV cells has been observed upon application of extremely high frequency (>50 GHz) electric pulses. Analysis of absorption spectroscopy shows the appearance of multiple additional absorption peaks in visible as well as high energy region (<400 nm) of the solar spectrum. It is concluded that the additional energy generated comes from capturing of hot carriers which are the electrons and holes generated when the PV cell absorbs photons with energy above the bottom of conduction band. These carriers (electrons and holes) lose their energy by the process of thermalization within a few picoseconds. It appears that the interaction of high frequency electric pulses with silicon lattice enables the lattice to delay the thermalization to >200 s (similar to minority carrier life time) and enables the electrode to capture these hot carriers before the energy is lost by thermalization. Pulses used to generate the states are produced using a special nanostructure involving perovskite based pyroelectric material.

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“…This means that we need to know the characteristics of the radiation from a solar cell as well those of the conducting wires linking the cells. We investigated the characteristics of radiation from a solar cell and found that they can be described by modeling a solar cell as metal wire with limited conductivity [9] [10].…”

Section: Introductionmentioning

confidence: 99%

Suppression of emissions radiated from solar cells in photovoltaic power generation system

Mariko

Tokuda

2008

2008 IEEE International Symposium on Electromagnetic Compatibility

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We have investigated several methods for suppressing the electromagnetic waves radiated from solar cells, which can affect broadcast and telecommunication systems. We focused on the direction of the current in a solar cell module and investigated whether the radiated electric field can be suppressed by alternating the current directions when two or more modules are used together. Comparison of the simulation results for three suppression methods with those for a fundamental method in which there is no suppression showed that a symmetric feeding point method can diminish the electric field radiated in the front face direction and that a reverse feeding point method can suppress it by about 20 dB in both the front and side face directions in comparison with the fundamental model. To obtain an even larger suppression effect, we investigated a suppression method combining these two methods for use with several modules in which the current directions in the solar cells are symmetric. We found that the suppression effect was about 20 to 50 dB with this combined suppression method.

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Radiated electromagnetic field from a solar cell for CISPR radiated emission measurement method

Cited by 15 publications

References 1 publication

A Study of the Antenna Effect of Photovoltaic Modules

A Study of the Antenna Effect of Photovoltaic Modules

Enhancing Efficiency of Silicon Photovoltaic Cells Using High Frequency Electric Pulses

Suppression of emissions radiated from solar cells in photovoltaic power generation system

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