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Feedback control of a tower solar plant with an optical corner reflector

机译:具有光学角落反射器的塔太阳能电厂的反馈控制

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In a thermal solar power tower plant, a field of heliostats reflects the solar radiation onto a receiver placed at the top of a tower. The heliostats must be appropriately positioned according to the sun position; this is usually done in open loop by exploiting the ephemeris data. In this paper we propose a closed-loop control where feedback is achieved with a corner reflector. This optical component, positioned at the centre of the receiver, has the distinctive feature of reflecting an incident ray in the same direction. Hence, the heliostat is correctly positioned only when the reflected sun light ray, further reflected by the corner reflector, hits its centre. The occurrence of this can be tested with a camera located close to the heliostat, suitable oriented towards the corner reflector.
机译:在热太阳能电站塔厂,一款灯罩的领域将太阳辐射反射到放置在塔顶的接收器上。定位器必须根据太阳位置适当定位。这通常通过利用星历数据来在开环中完成。在本文中,我们提出了一种闭环控制,其中通过拐角反射器实现了反馈。定位在接收器的中心的该光学部件具有在相同方向上反射入射光光射的独特特征。因此,仅当反射的太阳光线被切开的拐角反射器进一步反射时,才能正确地定位。这可以用靠近光晕靠近的摄像机进行测试,适用于朝向角落反射器。

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