An Interval Approach for Robust Control of a Large PHWR with PID Controllers

Shohan Banerjee, Kaushik Halder, Soumya Dasgupta, Siddhartha Mukhopadhyay, Koushik Ghosh, Amitava Gupta

Research output: Contribution to journalArticlepeer-review

Abstract

A nuclear reactor exhibits changing behavior with variation in reactor power. Further, uncertainties in the measurement of the actual power produced by the reactor, the heat transfer from the fuel to the coolant and the reactivity change due to the change in the fuel and coolant temperatures and condition of the core, make it necessary to adopt a robust control approach for design of control systems for such plants. In this paper a 540 MWe Indian PHWR consisting of 14 zones has been modeled using inexact models incorporating bounded parametric variations in power, heat transfer from the fuel to the coolant and temperature coefficients of reactivity of fuel and coolant. These inexact models are then used to obtain a robust and optimal PID controller gains for controlling the reactor power with specified time response under parametric variations, using an interval approach. The methodology is established with credible MATLAB simulations.
Original languageEnglish
Pages (from-to)281-292
Number of pages12
JournalIEEE Transactions on Nuclear Science
Volume62
Issue number1
Early online date30 Jan 2015
DOIs
Publication statusPublished - 1 Feb 2015

Keywords

  • Interval system
  • INTLAB
  • parametric uncertainty
  • PHWR
  • PID controller
  • robust control

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