High Temperature Effect on Multicrystalline Photovoltaic Module in Western Rajasthan, India

Garg, Shalini; J.B., Arun

doi:10.5120/cae2016652055

Cited by 8 publications

(9 citation statements)

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“…The results of analyses clearly show that dc power obtained at cell temperature 50 o C is far greater than obtained at cell temperature 25 o C. P dc as high as 86.71 KW is obtained at 62 o C cell temperature while P dc obtained at 25 o C cell temperature is insignificant. The result is in accordance to paper [2] where it was concluded that dc output voltage shows negative temperature coefficient for cell temperature greater than 52 o C and not 25 o C. The existing literature and even manufacturers do specify negative temperature coefficient for maximum power output (P max ) with reference to 25 o C cell temperature. The value of temperature coefficient for P max for the module that has been used in the plant is -0.447 %/ o K as shown in table number 2.…”

Section: Introductionsupporting

confidence: 73%

“…With reference to cell temperature 25 o C, the short circuit current (I sc ) increases in direct proportion to irradiance while open circuit voltage (V oc ) undergoes modest positive change. At the same time, with increase in cell temperature above 25 o C, V oc decreases substantially while the short circuit current increases only slightly [1].The result is that power output decreases with increase in cell temperature above 25 o C. However in one of the paper entitled "High Temperature Effect on Multicrystalline Photovoltaic Module in Western Rajasthan, India", it has been shown that dc output voltage does not decrease with increase in cell temperature above 25 o C instead stable and high dc output is obtained only when cell temperature is greater than 50 o C [2]. The results of the above paper are further verified by the work done in this paper.…”

Section: Introductionmentioning

confidence: 91%

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Performance of a Multicrystalline Photovoltaic Module in Critical Climatic Conditions of Western Rajasthan, India

Garg¹,

Arun²

2016

CAE

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The energy yield of a Photovoltaic (PV) power plant depends upon the dc power output of the PV module. The irradiance and temperature are the two most important parameters affecting the dc power output. This paper analyses the dc power output of a multicrystalline PV module in the realistic environmental condition with respect to solar irradiance, ambient temperature and cell temperature. The real time data is collected from a 5 MW grid connected solar PV plant located in Jaisalmer, a district in Western Rajasthan. The paper brings forward a crucial and valuable fact that the modules work more efficiently at high temperature and high solar irradiance. For a multicrystalline PV module with maximum dc power output (P max ) at STC condition equal to 118.687KW, analyzed over a period of one year it is found that maximum dc power output (P dc ) at 22 o C ambient temperature and 40 cell temperature is only 72 KW while maximum P dc at cell temperature around 50-55 o C and ambient temperature around 35-38 o C is 90-92KW. Slight negative temperature coefficient for P dc with respect to temperature is observed if ambient temperature and cell temperature is greater than 35 o C and 50 o C respectively. However power output increases in direct proportion to irradiance outweighing the change in temperature. Higher the irradiance, higher is the dc power output, higher is the efficiency and correspondingly higher is the energy yield of the PV module. The multicrystalline PV module works efficiently and gives high yield in the extremely high temperature of Western Rajasthan. Rajasthan which receives world second largest radiation has the capability to meet the energy demands of India and the world as well if solar energy is harnessed in appropriate way.

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Section: Introductionsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 91%

Performance of a Multicrystalline Photovoltaic Module in Critical Climatic Conditions of Western Rajasthan, India

Garg¹,

Arun²

2016

CAE

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“…al. showed that Mono-crystalline and Amorphous solar photovoltaic module gives best performance at low humidity and cell temperature around 40 o C for the climatic conditions of Qatar [19]. Garg, JB showed positive effect of ambient and cell temperature on dc voltage up to 38 o C and 50 o C respectively [20]. In another paper [21] Garg, JB showed significant positive effect of cell temperature in 49 o C to 62 o C range and that V dc attains nearly constant and high value only at high cell temperature.…”

Section: Introductionmentioning

confidence: 97%

The Defining Positive Role of High Cell Temperature on the Performance of a Multicrystalline Solar Photovoltaic Module

Garg¹,

Arun²

2019

CAE

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The Photovoltaic technology has shown remarkable development in last few years but still lot of research is required to increase the energy yield and reduce solar electricity cost. Even a small increase in energy yield can lead to improved photovoltaic power plant performance and significant reduction in solar generated electricity cost. Evaluating real time data for determining the plants performance plays significant role as it is the climatic conditions which directly affect the power output and evaluating the climatic conditions that can lead to increase the energy yield can bring revolution in the field of solar photovoltaic. This paper evaluates simultaneous effect and role of irradiance and cell temperature on the dc voltage, dc current and dc power, the key determinant of energy yield based on the real field data set of 5 MW grid connected Solar Photovoltaic power plant of Western Rajasthan. It brings forward for the first time ever that high cell temperature plays defining positive role in increasing the energy yield and consequently improving the plant's performance in contrast to literature and research papers.

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“…This paper illustrates comprehensive study of real field data to analyse the effect of high cell temperature and POA on the dc voltage of a grid connected multicrystalline module and to estimate temperature coefficient for multicrystalline module in real field conditions which is far different from laboratory conditions. The work done is extension of my previous two papers [4,5]. In previous paper [4] dc voltage was analysed with respect to ambient temperature and GHI (Global Horizontal Irradiance) but results show that V dc has better correlation with cell temperature and POA.…”

mentioning

confidence: 94%

“…The work done is extension of my previous two papers [4,5]. In previous paper [4] dc voltage was analysed with respect to ambient temperature and GHI (Global Horizontal Irradiance) but results show that V dc has better correlation with cell temperature and POA. The results are significant and consistent with the previous results.…”

mentioning

confidence: 94%

Evaluating DC Voltage Temperature Coefficient of a Multicrystalline Module in Actual Environmental Conditions of Western Rajasthan, India

Garg¹,

Arun²

2017

CAE

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Solar irradiance and cell temperature are the two most important parameters governing the efficiency of PV power plant. This paper presents simultaneous impact of cell temperature and the irradiance falling on the plane of solar panels-POA (Plane of Array Irradiance) on the dc voltage(V dc ) of a multicrystalline Photovoltaic(PV) module, one of the most important parameter governing dc power and hence efficiency of (PV) power plant. In contrast to existing literature which specify negative temperature coefficient for o C to 60 o C but as soon as sun begins to descent, cell temperature starts reducing and V dc starts increasing, maintaining nearly constant value in the range of 80-85% of its maximum rated value for about 6-8 hours. If cell temperature is less than about 45 o C, neither V dc reaches point of saturation nor does it attain constant value. Thus, high cell temperature has overall positive effect on dc voltage of a multicrystalline grid connected PV power plant. Western Rajasthan being blessed with high temperature and high insolation for 6-7 hours in a day for about eight months has the capability of high energy yield as dc power is directly proportional to dc voltage.

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High Temperature Effect on Multicrystalline Photovoltaic Module in Western Rajasthan, India

Abstract: General TermsMulticrystalline Photovoltaic Module, Solar Energy.

Cited by 8 publications

References 1 publication

Performance of a Multicrystalline Photovoltaic Module in Critical Climatic Conditions of Western Rajasthan, India

Performance of a Multicrystalline Photovoltaic Module in Critical Climatic Conditions of Western Rajasthan, India

The Defining Positive Role of High Cell Temperature on the Performance of a Multicrystalline Solar Photovoltaic Module

Evaluating DC Voltage Temperature Coefficient of a Multicrystalline Module in Actual Environmental Conditions of Western Rajasthan, India

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