Academic Conference on Natural Science for Master and Ph. D students From Cambodia Laos Vietnam

The typical SPS system consists of several main units:

• 
  Solar Power satellite (SPS) flying on the LEO, MEO, GEO orbits ( with mirror system, Solar cell system, conversion from solar to the high power microwave beam (laser beam) by micro wave devices (Laser) , transmission antenna)
  
• 
  Ground antenna–recantena (or PV array for laser SPS system) and units conversing to electrical energy to the electrical line network.
  

3. 
   The list of some scientific technological solutions of SSP
   

• 
  Solutions of the design of structures of SPS
  
• 
  Solution of the focusing mirror systems
  
• 
  Solution of the large space solar cell matrix (high efficiency, light weight, rotation to follow the sun…)
  
• 
  Solution of high power microwave devices (traveling wave tube-TWT, Klystron, Magnetron) matrix for converting the solar power to the high power microwave /laser beams
  
• 
  Solution of choosing orbit (LEO, MEO, GEO) with fitable parameters and requirements
  
• 
  Solution of the wirelessly transmission of high power Microwave beam/laser via the space and atmosphere to the earth surface
  
• 
  Solution of design for very large recantena matrix and convert units on the ground
  
• 
  Solution of converting the received high power microwave beam/Laser beam to electrical power fitting into the electrical network.
  
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  Wave length of Microwave for transmission is at the windows of 2,58 GHz and 5,8 GHz, for/laser beam transmissions is in the range of 0.4-1.2 m or 8-12m.
  

3. 
   Several projects in developed countries
   

• 
  The SSP Projects of United States: SUN TOWER (1997) could give 200 MW, ISC (Integrated Symmetrical Concentrator (two years project with 1, 2 GW, SSP Project of Xenotech Research to be used in Oct. 2010 [48]
  
• 
  The SSP Projects of Japan
  
• 
  SPS2000 project with 10 MW, using 2,48 GHz [45]; invested 9 billion Yen, JAXA project (2002) with 7000 tons weight [40,43]; USEF project with 1.2GW; obtain energy on the ground is 0.75GW; weight 2000 tons [40,43]. – SSP project of 1GW (equivalent with nuclear energy plant (2009) many large Japan companies taking part in such as Mitsubishi Heavy Industries, Mitsubishi Electric, NEC, Fujitsu and Sharp…) under JAXA [48]. The parameters of SPS and requirements can see on table 3.
  
• 
  The SSP Projects of Europe: Sail Tower project (2001) it is similar to Sun Tower project (US) with 400 MW, using 400.000 high power magnetron microwave devices, and using thin film technology [40,43].
  

3. 
   Advantages of SPS
   

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  Unlike oil, gas, ethanol, and coal plants, SSP does not emit CO₂.
  
• 
  Unlike coal and nuclear plants, SSP does not compete for or depend upon increasingly scarce fresh water resources.
  
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  Unlike bio-ethanol or bio-diesel, SSP does not compete for increasingly valuable farm land or depend on natural-gas-derived fertilizer. Food can continue to be a major export instead of a fuel provider.
  
• 
  Unlike nuclear power plants, SSP will not produce hazardous waste, procreate nuclear weapons, or provide easy targets for terrorists.
  
• 
  Unlike terrestrial solar and wind power plants, SSP is available 24 hours a day, 7 days a week, in endless quantities. It ignores cloud cover, daylight, or wind speed.
  
• 
  Unlike coal and nuclear fuels, SSP does not require environmentally problematic mining operations.
  
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  SSP can provide true energy independence for the nations that develop it, eliminating a major source of national competition for limited Earth-based energy resources and dependence on unstable or hostile foreign oil providers.
  
• 
  SSP can be easily exported anywhere in the world, and its energy can be converted to local needs, from household appliances in rural India to desalination of sea water.
  
• 
  SSP can take advantage of our current and historic investment in aerospace expertise to expand employment opportunities in solving the difficult problems of energy security and climate change.
  
• 
  SSP can provide a market large enough to develop the low-cost space transportation system required to enable an SSP business case. This will slowly open the solar system to Earth’s economic reach and even settlement.
  
• 
  SSP can be easily exported anywhere in the world, and its energy can be converted to local needs, from household appliances in rural India to desalination of sea water.
  
• 
  SSP can take advantage of our current and historic investment in aerospace expertise to expand employment opportunities in solving the difficult problems of energy security and climate change.
  
• 
  SSP can provide a market large enough to develop the low-cost space transportation system required to enable an SSP business case. This will slowly open the solar system to Earth’s economic reach and even settlement.
  
  3. 
     The Path of Space Solar Power
     

• 
  Low-cost, environmentally-friendly launch vehicles. Current launch vehicles are too expensive, and at high launch rates may pose atmospheric pollution problems of their own. The launch cost to LEO recently is about 6.600 - 11 000 USD/kg, according to the estimation for the near future, the cost is about 400-500 USD/kg then it is acceptable.
  
• 
  Reduced launch costs, the key enabler, will provide unprecedented access to space and space operations beginning with clean, baseload SSP - reliable power delivery and global energy security at greatly reduced environmental impact. Only SSP can support this vastly expanded space launch market.
  
• 
  Large scale in-orbit construction and operations. The physics requires that solar power satellites must be huge, gathering massive utility-scale quantities of energy.
  
• 
  World photovoltaic (PV) production would be greatly expanded into space. Currently just 0.03% of worldwide electricity is generated from photovoltaic power. 2006 world PV production was 2.1 GW. “The real growth in the solar cell market will be in equipment for newer thin film technologies; cadmium telluride (CdTe - 26% of thin-film market) and Copper Indium (Gallium) Diselenide (CIGS - 10% of thin-film market). Key innovations are roll-to-roll equipment and printable CIGS inks instead of sputtering and CVD.”
  
• 
  All other necessary technologies are similarly reasonably near-term and have multiple attractive approaches. However, much work that we understand well is needed to bring them to practical fruition.
  

4. 
   SOME DATA OF ENERGY SOURCES IN VIET NAM
   

5. 
   CONCLUSIONS
   

1. 
   International Energy Agencr (IEA), Energy Statistics, Head of Communication and Information Office , 9 rue de la Federation, 75739 Paris Cedex 15, France , 2008
   
2. 
   Darel Preble, Designing a Sustainable Energy Transformation, Alternative Energy NOW Conference, January 23, 2009, Lake Buena Vista, Florida, www.sspi.gatech.edu
   
3. 
   Solar power satellite From Wikipedia, the free encyclopedia
   
4. 
   Microwave power transmission, From Wikipedia, the free encyclopedia,
   
5. 
   Renewable - Free Energy for the World – Forever
   
6. 
   Solar energy From Wikipedia, the free encyclopedia
   
7. 
   Makoto Nagatomo, Susumu Sasaki and Yoshihiro Naruo; Conceptual Study of A Solar Power Satellite, SPS 2000 Institute of Space and Astronautical Science 3-1-1 Yoshinodai, Sagamihara 229 JAPAN
   
8. 
   NSS Space Solar Power Library
   
9. 
   NSS Position Paper on Space Solar Power [PDF]
   
10. 
    Brochure on Space-Based Solar Power [PDF]
    
11. 
    Press Conference on 2007 National Security Space Office study of space solar power
    
12. 
    News reports on 2007 National Security Space Office study of space solar power
    
13. 
    Energy Business Reports: Microwave Power Transmission Market Potential (July 2008)
    
14. 
    Space Power section of SpaceFuture.com
    
15. 
    Space Solar Alliance for Future Energy
    
16. 
    The Space Review: A step forward for space solar power (September 15, 2008)
    
17. 
    Baltimore Sun: Solar power from space - Our view: A new technology that could cure our addiction to oil (July 25, 2008)
    
18. 
    Space.com: The World Needs Energy from Space, by Peter Glaser (February 23, 2000)
    
19. 
    Will Space-Based Solar-Powered Lasers Solve Our Energy Future? (July 24, 2008)
    
20. 
    Orbiting Space Power Systems Would Convert Sunlight into Laser Beams Sep. 7, 2007)
    
21. 
    Electricity from orbiting solar-powered lasers (September 6, 2007)
    
22. 
    Brown., W. C.. "The History of Power Transmission by Radio Waves". Microwave Theory and Techniques, IEEE Transactions on (Volume: 32, Issue: 9 On page(s): 1230- 1242 + ISSN: 0018-9480).  (September 1984)
    
23. 
    Glaser, P. E., Maynard, O. E., Mackovciak, J., and Ralph, E. L, Arthur D. Little, Inc., "Feasibility study of a satellite solar power station", NASA CR-2357, NTIS N74-17784, February 1974
    
24. 
    Glaser, Peter E.."Power from the Sun: Its Future".Science Magazine,22 November 1968 Vol162, Issue 3856, Pages 857-861. 
    
25. 
    Glaser, Peter E.. "Method And Apparatus For Converting Solar Radiation To Electrical Power". United States Patent 3,781,647 December 25, 1973. 
    
26. 
    Potential of Laser for SPS Power Transmission. HCP/R-4024-07, Oct. 1978.112 pages.
    
27. 
    Satellite Power System (SPS) International Agreements. Prepared by Carl Q. Christol. HCP-R-4024-08, October 1978. 283 pages.
    
28. 
    Satellite Power Systems (SPS) Laser Studies: Meteorological Effects on Laser Beam Propagation and Direct Solar Pumped Lasers for the SPS. NASA Contractor Report 3347, November 1980. 143 pages.
    
29. 
    Radiofrequency and Microwave Radiation Standards interpretation of General Industry (29 CFR 1910) 1910 Subpart G, Occupational Health and Environmental Control 1910.97, Non-ionizing radiation.
    
30. 
    Environmental Effects - the SPS Microwave Beam
    
31. 
    Solar power satellite offshore rectenna study", Final Report Rice Univ., Houston, TX., 11/1980, Abstract: http://adsabs.harvard.edu/abs/1980ruht.reptT.....
    
32. 
    Solar Power Satellites (Hardback) Glaser, P. E., Frank P. Davidson and Katinka Csigi, 654 pgs, 1998, John Wiley & Sons ISBN 0-471-96817-X
    
33. 
    GS. Trần Mạnh Tuấn, Ths Đào Thị Hồng Diệp; các hệ thống Vệ tinh định vị Toàn cầu và ứng dụng, NXBGD, 2006
    
34. 
    Công Nghệ Vệ tinh, chủ biên Trần mạnh Tuấn, Nhà xuất bản KH&KT, Hà nội 2007
    
35. 
    Credit Suisse Group, in “Corn Is Booming as Ethanol Heats Up”, http://online.wsj.com/article/SB116260858542413472.html [1]
    
36. 
    Đào Khắc An, Vật liệu và linh kiện quang điện tử trong thông tin quang (463 trang), NXBDDHQGHN, 2004
    
37. 
    "Peak coal by 2025 say researchers", initiated by a German member of Parliament. Authors: Dr. Werner Zittel and Jörg Schindler www.energywatchgr-oup.org/files/Coalreport.pdf and www.energybulletin.net/28287.html.
    
38. 
    Andrew K. Soubel, Energy Law Spring 2004, Chicago-Kent College of Law, soubel@msn.com: Solar Power Satellites and Microwave Power Transmission
    
39. 
    Sterling Allan is an Examiner from the National Edition. You can see Sterling's articles at:http://www.Examiner.com/x-8199-Breakthrough-Energy-Examiner
    
40. 
    Supporting Document for the URSI White Paper on Solar Power Satellite Systems, URSI Inter-commission Working Group on SPS, july 2006
    
41. 
    Wireless Power Transmission for Solar Power Satellite (SPS), N. Shinohara
    
42. 
    Space-Based Solar Power, James Harkins, Dan Livingston, Alex Wong, Aaron Sanders
    
43. 
    Study of the Solar Power Satellite in NASDA; Proceeding of the 7th International Symposium on Artificial Intelligence, Robotics and Automation in Space:i-SAIRAS2003, NARA, Japan, May 19-23, 2003; Mitsushige Oda, Hiroshi Ueno, Masahiro Mori
    
44. 
    Key world energy statistics, Cơ quan năng lượng Quốc tế (IEA), 2008.
    
45. 
    Conceptual Study of A Solar Power Satellite, SPS 2000 Makoto Nagatomo, Susumu Sasaki and Yoshihiro Naruo.
    
46. 
    Wireless Power TransmissionAn Obscure History and a Bright Future, Presented by Andrew Bomber March 9, 2005, Dr. Andres La Rosa (PH 464 Applied Optics)
    
47. 
    Wireless Power Transmission, Alan Chun-yip Yeung, Leanne Cheung, Jeff Samandari, Wehibe Belachew, Tesfa Mael, and Jose A. Becerra