Solar Photovoltaic Cell Simulator
A photovoltaic cell simulation and solar energy technology, applied in the field of solar photovoltaic power generation, can solve the problems of weak dynamic response ability, large error, and unable to meet high-speed application circuits or optimizers, etc., and achieve the effect of strong dynamic response ability
Active Publication Date: 2019-07-19
SILLUMIN SEMICON CO LTD
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Problems solved by technology
The disadvantage of the simulated solar photovoltaic cell array simulator is that it is greatly affected by the simulated light source and temperature, and cannot accurately control the output power of the photovoltaic cell, and the error is large, resulting in serious fluctuations in the open circuit voltage and maximum power point of the photovoltaic cell offset
The disadvantage of the digital solar photovoltaic cell array simulator is that it is limited by the topological frequency of the control circuit. There are sampling, operation and feedback control circuits, which require a certain control time. Its dynamic response ability is weak and cannot meet the needs of high-speed application circuits or optimizers. requirements
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] Under certain light intensity and ambient temperature conditions, the volt-ampere characteristic curve of the photovoltaic cell is as follows: figure 1 shown.
[0029] Such as figure 2 As shown, MOSFET has four working regions, which are linear region, saturation region, breakdown region and cut-off region.
[0030] By observing the output characteristic curve of the field effect transistor (MOSFET) in the linear region and the saturation region, it can be found that the curve is very similar to the volt-ampere characteristic curve of the photovoltaic cell, such as image 3 shown.
[0031] The basic circuit of the MOSFET (Philips NMOS IRZ24N) control circuit is as follows Figure 4 As shown, that is, circuit 1, its simulation waveform is...
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The invention discloses a solar photovoltaic cell simulator which comprises a first voltage source, a second voltage source, a current source, a first N-type field effect transistor, a third resistor,a seventh resistor and an eighth resistor; wherein the drain electrode of the first N-type field-effect transistor is respectively connected with the negative electrode of the current source and theground, the grid electrode is respectively connected with one end of the seventh resistor and one end of the eighth resistor, the source electrode is respectively connected with the other end of the eighth resistor and one end of the third resistor, the positive electrode of the current source is connected with the positive electrode of the first voltage source, the positive electrode of the second voltage source is connected with the other end of the seventh resistor, the negative electrode of the second voltage source is connected with the other end of the third resistor, and the other end of the third resistor is connected with the negative electrode of the first voltage source. Setting and control can be carried out according to parameters of solar photovoltaic cells, so that photovoltaic cell arrays under different application environments and conditions can be simulated.
Description
technical field [0001] The invention belongs to the technical field of solar photovoltaic power generation, and in particular relates to a solar photovoltaic cell simulator. Background technique [0002] Solar energy is a renewable energy source, and solar photovoltaic power generation technology has gradually become a research hotspot at home and abroad. In the photovoltaic power generation system, since the output characteristics of photovoltaic cells are greatly affected by external environmental factors, especially the influence of light intensity and ambient temperature, the photovoltaic cells cannot be effectively controlled, resulting in the inability to obtain accurate experimental data. The photovoltaic cell simulator is based on the premise of accurately simulating the characteristics of photovoltaic cells, effectively controlling the relevant parameters of photovoltaic cells, improving research efficiency and data reliability and accuracy. [0003] At present, th...
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IPC IPC(8): H02S50/10
CPCH02S50/10Y02E10/50
Inventor 高志勇吴国明王成
Owner SILLUMIN SEMICON CO LTD