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S. P. Sukhatme

Bio: S. P. Sukhatme is an academic researcher. The author has contributed to research in topics: Solar energy. The author has an hindex of 2, co-authored 2 publications receiving 582 citations.
Topics: Solar energy

Papers
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Book
13 Jan 2009
TL;DR: The revision of the hallmark text on solar energy has been done keeping in mind the current scenario in solar energy requirements as discussed by the authors.As a result the book is updated with the energy scenario and the various applications of solar energy being used today.
Abstract: The revision of this text hallmark text on Solar Energy has been done keeping in mind the current scenario in Solar Energy requirements. As a result the book is updated with the energy scenario and the various applications of solar energy being used today. Numerous new topics comparison tables solved and unsolved problems, have been added and changes have been made to cater to the changing requirements of the students. In all it is the most updated and comprehensive yet concise book on the subject.

582 citations

Book
01 Jan 1994

20 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, a MATLAB-based modeling and simulation scheme is presented for studying the I-V and P-V characteristics of a PV array under a nonuniform insolation due to partial shading.
Abstract: The performance of a photovoltaic (PV) array is affected by temperature, solar insolation, shading, and array configuration. Often, the PV arrays get shadowed, completely or partially, by the passing clouds, neighboring buildings and towers, trees, and utility and telephone poles. The situation is of particular interest in case of large PV installations such as those used in distributed power generation schemes. Under partially shaded conditions, the PV characteristics get more complex with multiple peaks. Yet, it is very important to understand and predict them in order to extract the maximum possible power. This paper presents a MATLAB-based modeling and simulation scheme suitable for studying the I-V and P-V characteristics of a PV array under a nonuniform insolation due to partial shading. It can also be used for developing and evaluating new maximum power point tracking techniques, especially for partially shaded conditions. The proposed models conveniently interface with the models of power electronic converters, which is a very useful feature. It can also be used as a tool to study the effects of shading patterns on PV panels having different configurations. It is observed that, for a given number of PV modules, the array configuration (how many modules in series and how many in parallel) significantly affects the maximum available power under partially shaded conditions. This is another aspect to which the developed tool can be applied. The model has been experimentally validated and the usefulness of this research is highlighted with the help of several illustrations. The MATLAB code of the developed model is freely available for download.

1,139 citations

Book
01 Jan 2005
TL;DR: In this article, the authors survey the magnitude of the poor to rich-country flows, the rich country policies that are driving them, and the multiple channels through which skilled migration affects development.
Abstract: Over the next few decades, global migration is likely to play an influential role in shaping the nature of politics and economies internationally. This timely study illuminates possible implications of migrant flows from a development perspective. The authors survey the magnitude of the poor to rich-country flows, the rich-country policies that are driving them, and the multiple channels through which skilled migration affects development. They provide a rich discussion of the policy options, as they search for those that avoid the worst losses to poor countries while maintaining the most liberal feasible international migration regime.

447 citations

Journal ArticleDOI
TL;DR: A comprehensive literature review on the scenario of solar thermal power plants and its up-to-date technologies all over the world is presented Results of the technical and economical feasibility studies by researchers are reported in brief for further reference.
Abstract: The solar thermal power plant is one of the promising renewable energy options to substitute the increasing demand of conventional energy The cost per kW of solar power is higher and the overall efficiency of the system is lower In the present communication, a comprehensive literature review on the scenario of solar thermal power plants and its up-to-date technologies all over the world is presented Results of the technical and economical feasibility studies by researchers are reported in brief for further reference It is observed that the solar thermal power plants have come out of the experimental stage to commercial applications Case studies of typical 50 MW solar thermal power plants in the Indian climatic conditions at locations such as Jodhpur and Delhi is highlighted with the help of techno-economic model Different solar concentrator technologies (parabolic trough, parabolic dish and central power tower) for solar thermal power plants are compared economically It has been found that the parabolic dish concentrating solar Stirling engine power plant generate electricity at a lower unit cost than the other two solar technologies considering 30 years lifespan and 10% interest rate on investment

325 citations

Journal ArticleDOI
TL;DR: In this article, a unique survey which tracks worldwide the best and brightest academic performers from three Pacific countries is used to assess the extent of emigration and return migration among the very highly skilled, and to analyze, at the microeconomic level, the determinants of these migration choices.
Abstract: A unique survey which tracks worldwide the best and brightest academic performers from three Pacific countries is used to assess the extent of emigration and return migration among the very highly skilled, and to analyze, at the microeconomic level, the determinants of these migration choices. Although we estimate that the income gains from migration are very large, not everyone migrates and many return. Within this group of highly skilled individuals the emigration decision is found to be most strongly associated with preference variables such as risk aversion, patience, and choice of subjects in secondary school, and not strongly linked to either liquidity constraints or to the gain in income to be had from migrating. Likewise, the decision to return is strongly linked to family and lifestyle reasons, rather than to the income opportunities in different countries. Overall the data show a relatively limited role for income maximization in distinguishing migration propensities among the very highly skilled, and a need to pay more attention to other components of the utility maximization decision.

316 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present results of innovative surveys that tracked academic high achievers from five countries to wherever they moved in the world to directly measure at the micro level the channels through which high-skilled emigration affects sending countries.
Abstract: This article presents results of innovative surveys that tracked academic high achievers from five countries to wherever they moved in the world to directly measure at the micro level the channels through which high-skilled emigration affects sending countries. There are high levels of emigration and of return and the income gains to the best and brightest from migrating are an order of magnitude greater than any other effect. Most high-skilled migrants from poorer countries remit but involvement in trade and foreign direct investment is rare. Fiscal costs vary widely but are much less than the benefits to the migrants themselves. Two narratives drive discussions of the development impact of high-skilled migration. The first is the idea of a brain drain, whereby the departure of doctors, teachers, engineers, scientists and other highly skilled workers decimates the human capital and fiscal revenues of sending countries (Bhagwati and Hamada, 1974). Such fears lead to calls for policies to restrict the flow of highly skilled workers, such as demands that developed countries stop recruiting doctors from developing nations and efforts by developing nations to restrict the ease of their highly skilled individuals migrating. 1 Contrasting with this is the view of a highly educated diaspora as a potent force for developing the local economy through remittances, trade, foreign direct investment (FDI) and knowledge transfers, with the experience of India and China in setting up technology firms as a result of diaspora working in Silicon Valley a prominent example (Saxenian, 2002). Economists have also emphasised that the possibility of migrating may spur human capital accumulation, potentially leading to a net increase in the education levels of those in the home country. 2

229 citations