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System dynamic model and temperature control of a thermoelectric cooler.

Author(s) : HUANG B. J., DUANG C. L.

Type of article: Article, IJR article

Summary

A linear dynamic model of the thermoelectric cooler including the heat sink and the cooling-load heat exchanger was derived using small-signal linearization method. It shows that the dynamic model of a thermoelectric cooler has two poles and one zero. The linear dynamic model is shown to vary with operating conditions. A linear feedback system is designed for the cold-end temperature control of a thermoelectric cooler using the average linear dynamic model of the thermoelectric cooler and a pseudo derivative feedback controller structure. The step response tests show that the controller has a very satisfactory performance. Some tests under variable cooling load and ambient temperature are also performed to examine the disturbance-rejection property of the controller. Experimental results show that the cold-temperature can be maintained at the fixed value within more or less 0.1 °C irrespective of the variations of the cooling load and the ambient conditions.

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Format PDF

Pages: 197-207

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Details

  • Original title: System dynamic model and temperature control of a thermoelectric cooler.
  • Record ID : 2000-2528
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 23 - n. 3
  • Publication date: 2000/05

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