Reduction of PV Module Temperature Using Thermally Conductive Backsheets

Oh, Jaewon; Rammohan, B.; Pavgi, Ashwini; Tatapudi, Sai; TamizhMani, GovindaSamy; Kelly, George; Bolen, Michael

doi:10.1109/jphotov.2018.2841511

Cited by 34 publications

(17 citation statements)

References 14 publications

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“…The value of its daily listing and the average temperature for three days becomes the junction temperature when the module is under operation [15]- [16].…”

Section: B Nmot Methods Of Calculationmentioning

confidence: 99%

Analysis on the Features of NOCT and NMOT Tests With Photovoltaic Module

et al. 2020

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The operating temperature of the photovoltaic (PV) module plays a major role among the parameters affecting the energy yield of photovoltaic (PV) power generation systems. This paper compared the requirements of Nominal Operating Cell Temperature (NOCT), which is used to estimate the PV module operating temperature according to IEC 61215:2005, with those of the recently revised IEC 61215: 2016 Nominal Module Operating Temperature (NMOT). Through this, each feature of the parameters used to calculate the NOCT and NMOT could be determined, and it was assumed that the NMOT is lower than NOCT. And, among the parameters, the wind speed was found to be a significant variable affecting the temperature, and non-linear clusters and skewed data are improved if some data in the morning were deleted considering the period of module activation. Moreover, it is found that the method summing up the daily data for the calculation can reduce the correlation and deviation of NMOT.

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“…The value of its daily listing and the average temperature for three days becomes the junction temperature when the module is under operation [15]- [16].…”

Section: B Nmot Methods Of Calculationmentioning

confidence: 99%

Analysis on the Features of NOCT and NMOT Tests With Photovoltaic Module

et al. 2020

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“…thermal conductivity of the body of PV module). To accommodate all these parameters NOCT [54] is taken into consideration, which is defined as the temperature attained by a PV module at

800 {normalW / normalm}^{2}

irradiance with a wind speed of 1

m / s

and atmospheric temperature of

20 °

C. Considering ‘

η_{normalc} / τ α ≪ 1

’, where

η_{c}

is the electrical efficiency of PV module;

τ

is transmittance of glazing;

α

is the PV layer solar absorptance, the operating temperature of the module [55] is estimated as given in (19)

T_{cell} = T_{amb} + G . \frac{NOCT - 20 °}{800 {normalW / normalm}^{2}}

where

T_{cell}

and

T_{amb}

are the module temperature and ambient temperature, respectively, and G is the irradiance at

T_{amb}

temperature.…”

Section: Modelling Of Pv Modulementioning

confidence: 99%

Estimation of PV module parameters from the manufacturer's datasheet for MPP estimation

Changmai

Nayak

Metya

2020

IET Renewable Power Generation

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A study has been performed to extract the unknown parameters of a photovoltaic (PV) module using mathematical model-driven analysis. Neglecting the less significant terms, the number of non-linear exponential terms are reduced to develop a simplified algorithm to estimate five unknown parameters such as diode ideality factor, series resistance, shunt resistance, diode saturation current and photogenerated current of a single diode model PV module accurately with less computational complexities from the manufacturer's datasheet values. Substituting the estimated values of the unknown parameters, the PV module output power is obtained at different irradiance and temperature, which shows close coordination with the datasheet values. To improve the accuracy in the estimation of the PV module output using the proposed model, the nominal operating cell temperature (NOCT) is considered. The results of the proposed model are verified with the experimental output of two (one 315 Wp and another 3 Wp) PV modules, which shows better correlation with the proposed model considering NOCT. The measurement uncertainty to obtain the output power experimentally is not more than 6.88%.

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“…On the other hand, from simulation, we get the output MPP as 22.7 W for the same shading pattern, as shown in Table 5. Using the results we obtain the simulated PD as given in (12) Simulated PD = 1 − MPP with shading MPP without shading × 100% (12) Now, the error is calculated between simulated and calculated value as given in (13) Error = (Calculated PD − Simulated PD)%…”

Section: Pointmentioning

confidence: 99%

“…The approximate system loss of an array can be estimated [9], which is found to be nearly 36% in the module level in PSC. The effect of PSC in the PV system is analysed in a number of works [10][11][12][13][14][15][16][17][18]. In those methods, a semiconductorbased model of a solar cell is taken into consideration to extract different parameters such as current, voltage, MPP etc.…”

Section: Introductionmentioning

confidence: 99%

Mathematical model to estimate the maximum power output of a total cross tied connected PV array during partial shading condition

Changmai

Nayak

Metya

2019

IET Renewable Power Generation

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Estimation of the output power of a solar photovoltaic (PV) system during partial shading condition (PSC) is an interest of PV installers. Owing to the inclusion of a bypass diode, the occurrence of local and global maximum peak creates more difficulty in the calculation of maximum power output from a PV array. In this study, a mathematical model is established to estimate the percentage of degradation of a square total cross tied (TCT) connected PV array at different PSCs. By employing the proposed algorithm, it will be easier to estimate the maximum power point of a m × n (m = n) TCT connected PV array during PSC without using any measuring instrument except for the measurement of irradiance and temperature. A better correlation is obtained when the output of the proposed model is compared with MATLAB simulated output. The output of the proposed model is compared with the experimental output performed on an array comprises of 3 W PV modules and the comparison shows the satisfactory result.

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Reduction of PV Module Temperature Using Thermally Conductive Backsheets

Cited by 34 publications

References 14 publications

Analysis on the Features of NOCT and NMOT Tests With Photovoltaic Module

Analysis on the Features of NOCT and NMOT Tests With Photovoltaic Module

Estimation of PV module parameters from the manufacturer's datasheet for MPP estimation

Mathematical model to estimate the maximum power output of a total cross tied connected PV array during partial shading condition

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