Controller Design for Vapor Temperatures of OTEC Plant Based on Reduced Order Model

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  • 海洋温度差発電プラントの低次元モデルに基づく蒸気温度制御器設計

Abstract

An appropriate control strategy for an ocean thermal energy conversion (OTEC) plant is required to attain a high efficiecy and stability. This paper proposed a controller design for an OTEC plant based on reduced order model. We constructed a reduced model in which the turbine inlet temperature and turbine outlet temperature were controlled by a warm sea water pump and a cold sea water pump. Based on the reduced order model, we designed a controller for the OTEC plant of 1000kW. We evaluated the proposed controller by using a detail OTEC plant model which could faithfully represent the actual plant, and obtained a satisfactory control performance for vapor temperature control using the proposed controller. The controller will be used effectively to control the electric power of actual OTEC plants of any output size.

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