Design of a Controller for the Heat Capacity of Thermal Storage Systems Using Off-Peak Electricity

축열식 심야전력기기를 위한 축열량 제어기 설계

  • Lee, Eun-Uk (Dept. of Electronic Engineering Hanyang University) ;
  • Yang, Hae-Won (Dept. of Electronic Engineering Hanyang University)
  • 이은욱 (한양대학교 전기공학과) ;
  • 양해원 (한양대학교 전기공학과)
  • Published : 2001.01.01

Abstract

This paper presnts a controller for the heat capacity of thermal storage systems using off-peak electricity which is composed of an identifier using neural networks and a storage time adjuster in order to store exactly the required thermal energy without loss. Since thermal storage systems have nonlinear characteristics and large time constant, even if we predict the heating load accurately, it is very difficult to store exactly the required thermal energy. Thus, in the neural network for the identifier, the adaptive learning rate for high learning speed and bit inputs based on state changes of thermal storage power source are used. Also a hardware for the controller using a microprocessor is developed. The performance of the proposed controller is shown by experiment.

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