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Proportional-integral control of fan speed to maintain constant discharge pressure.

Author(s) : KRAKOW K. I., LIN S.

Summary

Values of the proportional-integral coefficients required to implement the control method are related to the pressure and volumetric flow rate characteristics of the fan and of the air distribution system. The proportional-integral coefficients and the sampling interval must be carefully selected to avoid system instabilities. A numerical model of a system consisting of an air distribution system, a fan, a fan motor, an inverter, and a proportional-integral controller is developed. The numerical model may be used to verify the suitability of the selected proportional-integral constants and sampling interval.

Details

  • Original title: Proportional-integral control of fan speed to maintain constant discharge pressure.
  • Record ID : 1996-3634
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1995/06/24
  • Document available for consultation in the library of the IIR headquarters only.

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