This website uses cookies to ensure you have the best experience. Learn more

Solar Cells And Theory Of Factors That Influence Pv Cell Output

1281 words - 6 pages

Due to soaring price and negative impact to the global environment of fossil fuel, demand for clean and renewable energy has increased quickly in recent years. Solar energy stands out as it is relatively easy to install and require little maintenance. Current applications range from power supply for calculators to satellites and space stations. Also, many people decide to mount solar panels on their properties to provide energy for water heating. In some countries, not only it is cheaper but owners also get paid for extra electricity they produce which is sent to power plants. Solar panels are a large amount of solar cells connected in series.

Solar cells are also known as photovoltaic (PV) cells. Which means it generate electricity from electromagnetic radiation. They are made of semiconductors and utilizes photoelectric effect, thus when photon hits the material it excites electrons and create current flow. There are various factors that can affect the power output of the PV cell. In this experiment we are going to exam the effect of changing irradiance, which is the density of radiation incident on the surface, and temperature on the voltage and current output of the PV cell.

In this report we will look at the theory related to factors that influence PV cell output and then two experiments designed to test the theory followed by a discussion of the results and finally a conclusion and summery. The two experiments will be discussed separately focusing on different aspects.

There are three important variables that determine the characteristics of a PV cell, all of which is shown in Figure 1, a graph of power and current versus voltage. The short-circuit current (Isc) is when the cell’s positive and negative terminals are connected directly, thus the largest possible current. The open circuit voltage (Voc) is when there is no load connected to the cell and it is the maximum voltage supplied. Another important point is the maximum power point (Pmp), this is the ideal operating point of the PV cell as it provides most energy. Other factors affecting the cell may be shown as a shift in the I-V curve.

Figure 1. Current and Power versus Voltage graph for a typical PV cell

Both irradiance and temperature can affect the behaviour of output voltages and current. Change in current is directly proportional to a change in irradiance, because greater light intensity results in more electrons being stimulated. Although voltage change is also directly proportional to a change in irradiance, it is not as significant as the case with current. This is shown in Figure 2, a graph showing the shifts of current versus voltage curve due to changes in irradiance. This indicates that voltage can operate mostly near the rated value for normal circumstances. However, the voltage changes more notably with temperature variation.

Figure 2. Graph showing how the current versus voltage curve varies with irradiance

The output voltage of a PV...

Find Another Essay On Solar Cells and Theory of Factors that Influence PV Cell Output

Factors That Influence a Monetary Policy

1833 words - 7 pages whereas the solid lines are the estimated impulse responses. The response horizon is given in the horizontal axis in quarters. In diagram 1, the response of output to monetary policy shock shows that output increases on impact for a short period and then gradually decreases, it maintains a lower level. The VAR estimates of real GDP is found not be significant. The initial response is contrary to expectation; economic theory shows that a rise in

Factors that influence the Academic Performance

1494 words - 6 pages /10309611111163718. , Database: Business Source Complete Cole, Darnell; Espinoza, Araceli. Examining the Academic Success of Latino Students in Science Technology Engineering and Mathematics (STEM) Majors Journal of College Student Development, v49 n4 p285-300 Jul-Aug 2008. (EJ803068), Database: ERIC Amenkhienan, Charlotte A.; Kogan, Lori R.. Engineering Students' Perceptions of Academic Activities and Support Services: Factors that Influence Their

Analyzing Factors That Influence Infant Birth Weight

3272 words - 13 pages , marital status, socioeconomic status, genetic factors and place of residence 2 The objectives of this study were to determine the factors that influence birth weight and to establish which of these factors can be used to estimate birth weight. The aims were to ascertain the individual effect of each of these factors and their effect as a group. This is an important research question, and findings from the research can be used to inform policy

Factors That Influence Violence in Children

642 words - 3 pages . This reality show teaches children that it may be cool to fight. Children view the winning wrestlers receiving attention and getting rewarded for their behaviours. The children then think this idea of fighting with others is cool and they to may be rewarded. Sometimes even the News on television can influence violence in children. Everyday, the News shows that it is a violent world out there and that violent behaviours are a way of protection

E-mail Receiver and Sender Factors That Influence Emoticon Perception and Use

2336 words - 9 pages E-mail Receiver and Sender Factors That influence Emoticon Perception and Use As mentioned previously the use of emoticons is not being used wide-spread (Rezabek & Cochenour, 1998). Although emoticons are not used widespread, there are some differences in use based on sender and receiver characteristics and settings of the communication. Factors such as gender, age, and sender-receiver relationship can all have an effect on how e-mail is used

Factors that Influence the Growth of Air Cargo in the Future

2917 words - 12 pages choosing them for fear of losing their precious lives even if they offer cheap air tickets. There is however various factors that can affect travel demand, changes in these factors, due to external influences or by design, can affect transport demand and influence passenger traffic as outlined in the tables below.DemographicsEconomicsPricesTransport OptionsService QualityLand UseNumber of people (residents, employees and visitors).IncomesAge

Explain the main factors that influence the rate of economic growth

477 words - 2 pages Explain the main factors that influence the rate of economic growth Economic growth will be different in M.E.D.Cs than it will be in L.E.D.Cs. The reason for this is that M.E.D.Cs are already developed and vast improvement may not be possible but in L.E.D.Cs they have a long way to catch up so it is easier for them to expand vastly. Economies like China and India have potential for vast economic growth because of a huge population. If

Discuss the Factors that might Influence the Entry Mode of an Multinational Company into Emerging Markets

1248 words - 5 pages A Multinational Enterprise’s (MNE) Entry mode is a function of its goals and of the host country’s institutional and market setting. Using a three-level analysis this essay will discuss the determining factors of a firm’s entry mode decision focusing on the trade offs of Joint Ventures, Acquisitions and Greenfield . Methods of entry can be categorized as functions of equity invested by MNEs upon market entry (BarkemaiandiVermeulen,i1998

This Essay will outline The influences of the witches' prophecies, the influence of Lady Macbeth, and Macbeth's ambitions, are they key factors that lead to his tragic downfall

700 words - 3 pages Macbeth, at the beginning of the play, seems to be a very loyal and honorable person. However, his character is changed by the influences of several factors. These factors have an influence on Macbeth, but he is responsible for his own destiny. The influences of the witches' prophecies, the influence of Lady Macbeth, and Macbeth's ambitions, are they key factors that lead to his tragic downfall.The witches (or "weird sisters" as they are often

Factors That Influence Customer Satisfaction With Hedonic Services

2739 words - 11 pages 1.0 Introduction This report aims to explore all the research literature available on the topic ‘factors that influence customer satisfaction with hedonic services’. Customer satisfaction is a very important concept because it leads to repeat patronage, positive word of mouth and ultimately increased profits for the business. It is therefore of much benefit to understand the factors which influence customers satisfaction to allow businesses to

Explore the factors that influence organizations towards 'work-life policies'

969 words - 4 pages Throughout the years, the role of work has faced significant changes. These changes might be because that we are living in a period of time whereby business environment is expanding and becoming globally competitive. Because of that people have to respond to that expansion and tried to dedicate their life and job so to cope up with these changes. Many people might have accepted the life shift whether working aboard or many businesses travels as

Similar Essays

Drawing On Both Expectancy And Equity Theory, Identify And Discuss The Main Factors That Are Likely To Influence The Effectiveness Of Performance Related Pay Schemes In Organisations

1165 words - 5 pages the prospects of promotion. Therefor, management can find it difficult to motivate people with low valence to money by performance pay.Expectancy theory is a generic theory of motivation and cannot be linked to a single author (Mullins, 427). One of the recent approaches is associated with Peter and Lawler. They argued that effort does not directly leads to performance, but mediated by such factors as ability and opportunity. For example, a staff

Factors That Influence Social Change Essay

1088 words - 5 pages societal and individual demands of the 21st century, colleges and universities recognized during the fall of 20th century their missions as well as practices required reinvigoration and mandated “curriculum revisions” (Clayton-Pedersen & O'Neill; Johnson, n.d.). The core societal change that has impacted higher education is a structural change, which is a convergence of two main forces: the information and management revolution. The information

Macro And Micro Economic Factors That Influence Plant Activity

1366 words - 5 pages This paper will first discuss factors that describe and analyze the macro- and micro-economic factors that could directly or indirectly influence plant operations here at ABC Complete Kitchens. Next, it will explain legal considerations that our organization must be prepared for, which are also relative to obtaining credit, having reliable market conditions, and avoiding product liability Capital Investment One of the most important concerns

Identify Internal Factors And External Factors That Influence National Production Fluctuations

2072 words - 9 pages example, government spends more on education and development areas. This is to ensure that good infrastructures are there. Thus, there are four factors that influence economic growth, namely natural resources, human capital, entrepreneurship and capital goods. Firstly, natural resources mean the gifts of nature. It is something that can be found in or on the earth. Examples of natural resources are agriculture, minerals and oil. Countries that