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Author: search.filters.author.Banjongjit, Sulee

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    Item type:Publication,
    Biomass power generation development in Thailand
    (2009-12-17)
    Chai, Chompoo Inwai
    ;
    Chow, Chompoo Inwai
    ;
    Leelajindakrairerk, Monthon
    ;
    Banjongjit, Sulee
    ;
    Fuangfoo, Pradit
    The emerging global warming crisis results from carbon dioxide emission has drawn an attention about renewable energy all over the world. Thailand is a developing country located at the heart of Southeast Asia with almost 70 million of population as of 2008. The ESI structure under the government of Thailand has been managed by the Electricity Generating Authority of Thailand (EGAT), Metropolitan Electricity Authority (MEA), and Provincial Electricity Authority (PEA) for almost 50 years. According to the Power Development Plan (PDP 2007), during the year 2007-2021, the government of Thailand plan to have the most economic power generation resources yet reliable and least environmental impact. To achieve those goals, there are three strategic plans which are to import power from neighboring country, to promote the renewable power generation from the public power companies, and to have a variety on power generations resources. This paper discusses the biomass power generation development in Thailand. System overview processes and biomass fuel consumed for the electricity production process are also presented. ©2009 IEEE.
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    Design optimization of wind power planning for a country with low-medium-wind-speed profile
    (2008-10-13)
    Chompoo-Inwai, Chai
    ;
    Chompoo-Inwai, Chow
    ;
    Leelajindakrairerk, Monthon
    ;
    Banjongjit, Sulee
    ;
    Fuangfoo, Pradit
    The emerging energy crisis resulting from a high price of crude oil has drawn attention about renewable energy all over the world. Thailand is a developing country located at the heart of Southeast Asia, with about 66 million of population as of 2006. The electricity supply industry structure under the government of Thailand has been managed by the Electricity Generating Authority of Thailand, the Metropolitan Electricity Authority, and the Provincial Electricity Authority for almost 50 years. According to the 2004 Power Development Plan, the country would have generation reserve at a marginal of 15%. Due to the rapid economic growth and difficulty in building new centralized generating facilities, this has the potential to create a security issue of electricity energy shortage and may develop a severe system blackout. Renewable energy issues have been widely discussed and debated over the country. Although solar energy is the most prominent renewable energy source due to the appropriate geographic of Thailand, it is still considered as a low-density energy source which requires a large area of installation. Therefore, for the long-term investment, wind power seems to be a good candidate because it is quick to install, needs no fuel cost, and is environment friendly. Therefore, this paper investigates the impact of the penetration level of wind power generation to be integrated into the Thailand system. System stability has been observed in various system configuration changes due to different control strategies of wind farms. The economic analysis of wind-farm investment has been also considered. © 2008 IEEE.
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    Development of an electronics ballast for a 250-watt high intensity discharge lamp
    (2004-09-29)
    Chompoo-Inwai, Chow Chai
    ;
    Tangsrianugul, Warawat
    ;
    Pornpojratanakul, Vinai
    ;
    Banjongjit, Sulee
    The main objective of this paper is to purpose the newly developed prototype of electronics ballast used for 250 watt high pressure sodium (HPS) lamp. In this paper, concept designs, circuit designs, and the implementation of the 250 watt prototype-ballast are presented. Test result shows that the newly developed model provides not only lower loss compares to the traditional core-coil ballast, but also give the higher system efficiency. Moreover, the overall system power factor is above 0.85 lagging with the expectation of percentage of total harmonics distortion less than 30 percent. All test procedures, and conditions are applied to employ with 250 high pressure metal halide (HPM) lamp as well.