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LTspice Model of a Solar Thermoelectric Generation System Presented by: Yacouba Moumouni

LTspice Model of a Solar Thermoelectric Generation System Presented by: Yacouba Moumouni Co-author: R. Jacob Baker. Outline. ABSTRACT I NTRODUCTION Thermoelectric Generator Basic Principles Solar TEG System Modeling in LTspice An RC Analogy of a TEG Results and Analysis Conclusion

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LTspice Model of a Solar Thermoelectric Generation System Presented by: Yacouba Moumouni

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  1. LTspice Model of a Solar Thermoelectric Generation System Presented by: Yacouba Moumouni Co-author: R. Jacob Baker

  2. Outline • ABSTRACT • INTRODUCTION • Thermoelectric Generator Basic Principles • Solar TEG System Modeling in LTspice • An RC Analogy of a TEG • Results and Analysis • Conclusion • Questions and Answers • References

  3. 1. ABSTRACT • Analytical heat transfer analysis is cumbersome • An LTspice model of a real-world STEG is proposed • Thermal parameters were extracted from device geometries and properties • Parameters were converted thru’ “thermal-to-electrical analogy” • An RC analogy was derived from this model • Temp variations on the cold side were 80% accurate

  4. 2. INTRODUCTION • Energy is vital in the 21st Century • Fossil fuels (FF) based energy are 80-85% • Energy from FF is less expensive to produce • Solar energy is most abundant and cleanest • Solar energy has two major disadvantages • There is a great need for energy storage • Few of TEG modeling considered the effects of internal parameters (Seebeck coef, Parasitic L and C, and Internal R )

  5. 3. TEG Basic Principles

  6. 4. STEG System Modeling in LTspice • Setup of the STEG System • Parameters Extraction • Electrical Analogy of Thermal System • TEG Implementation in LTspice (convenience in viewing and interpreting the interactions b/w) • 1) Seebeck; • 2) Joule; • 3) Peltier; and • 4) Thomson.

  7. 5. Proposed thermal model of the System

  8. 6. An RC Analogy of a TEG • Direct Normal Irradiance (DNI) • An impulse of light organized in a lookup • Built-in LTspice piece wise linear command • Internal parasitic (C) and Internal (R) were used • The input wave transitions from 0C to 100 C (Tpulse)

  9. 7. Results and AnalysisTemperature variations across the STEG system: a) Experiment, b) Sim

  10. 8. Conclusion • Electrical analogy of thermal system to simulate STEG is presented • A novel RC analogy to estimate the cold side temp is also presented • The study reveals the challenges to accurately model the exact behavior of all the physical parts that constitute a real-envt STEG • Experimental and simulated results remain in good agreement • STEG with Battery be used for all kinds of remote energy applications. Thank you,

  11. 9. References

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