Application of new control strategy for sun tracking

Rubio, Francisco; Ortega, Manuel G.; Gordillo, Francisco; Lopez-Martinez, M.

doi:10.1016/j.enconman.2006.12.020

Cited by 165 publications

(79 citation statements)

References 10 publications

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“…El control de un seguidor solar de dos ejes se presenta en (Roth, P., Georgiev, A., Boudinov, H. (2004)) y (Rubio, F.R., M.G. Ortega, F. Gordillo and M. López-Martínez (2007)), donde los controladores utilizados son de tipo PID. La estabilización inercial de plataformas tiene mucho interés desde hace tiempo en las aplicaciones aeronáuticas y en navegación marítima.…”

Section: Introductionunclassified

Control de Posición e Inercial de Plataforma de Dos Grados de Libertad

Rodriguez¹,

Ortega²,

Gordillo³

2010

Rev. iberoam. autom. inform. ind.

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Resumen: Este artículo presenta una aplicación de control para la estabilización inercial de una plataforma de dos grados de libertad (2-GDL). El objetivo de la aplicación es, en primer lugar, controlar las posiciones angulares de la plataforma en ausencia de perturbaciones inerciales y en segundo lugar, controlar las velocidades de la plataforma medidas respecto a ejes inerciales independientemente de las perturbaciones a las que se ve sometida. Con respecto al primer objetivo, se propone una estrategia de control de conmutación con el fin de reducir los efectos del rozamiento que es la principal causa del comportamiento no deseado. Respecto al segundo objetivo, se propone un control con estructura en cascada para conseguir las especificaciones deseadas. Se presentan resultados de simulación y experimentales sobre una plataforma que ponen de manifiesto la bondad de los controladores. Copyright c 2010 CEA.Palabras Clave: Ajuste de Ganancia, plataforma giroestabilizada, estabilización, control de posicionamiento, control inercial INTRODUCCIÓNEn este artículo, se presenta el diseño e implementación de la estrategia de control para una plataforma giroscópica que necesita controlar la posición y la velocidad inercial en presencia de perturbaciones. Hay algunas aplicaciones que requieren posicionamiento preciso y seguimiento a baja velocidad. En este caso, los fenómenos de fricción tienen efectos importantes, llevando a errores de seguimiento y a la aparición de ciclos límite. Estos errores necesitan ser compensados o reducidos para cumplir las especificaciones en cada caso.

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Section: Introductionunclassified

Control de Posición e Inercial de Plataforma de Dos Grados de Libertad

Rodriguez¹,

Ortega²,

Gordillo³

2010

Rev. iberoam. autom. inform. ind.

Self Cite

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“…The whole sentence "The proposed control strategy differs from the others, that is; used open-loop [2,7,11], closedloop [5,[12][13][14], and hybrid [24,25] control strategies are the following. " is revised as "The proposed control strategy that is used differs from open-loop [2,7,11], closed-loop [5,[12][13][14], and hybrid [24,25] control strategies as stated below.…”

Section: Design and Applicationmentioning

confidence: 99%

“…is revised as "The proposed control strategy that is used differs from open-loop [2,7,11], closed-loop [5,[12][13][14], and hybrid [24,25] control strategies as stated below. The systems that use open-loop control strategy have time based error.…”

Section: Design and Applicationmentioning

confidence: 99%

Optimization Controller for Mechatronic Sun Tracking System to Improve Performance

Engin

2013

Advances in Mechanical Engineering

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An embedded system that contains hardware and software was developed for two-axis solar tracking system to improve photovoltaic panel utilization. The hardware section of the embedded system consists of a 32-bit ARM core microcontroller, motor driver circuits, a motion control unit, pyranometer, GPS receiver, and an anemometer. The real-time control algorithm enables the solar tracker to operate automatically without external control as a stand-alone system, combining the advantages of the open-loop and the closed-loop control methods. The pyranometer is employed to continuously send radiation data to the controller if the measured radiation is above the lower radiation limit the photovoltaic panel can generate power, guaranteeing the solar tracking process to be highly efficient. The anemometer is utilized in the system to ensure that the solar tracking procedure halts under high wind speed conditions to protect the entire system. Latitude, longitude, altitude, date, and real-time clock data are provided by GPS receiver. The algorithm calculates solar time using astronomical equations with GPS data and converts it to pulse-width modulated motor control signal. The overall objective of this study is to develop a control algorithm that improves performance and reliability of the two-axis solar tracker, focusing on optimization of the controller board, drive hardware, and software.

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“…The proposed tracker is simple and cheap, but its accuracy greatly depends on the accuracy of local photo sensors which can be saturated under high temperature and strong radiation conditions. A hybrid tracking system was introduced in [3]. It combines open loop tracking strategies based on solar movement models and closed loop strategies using a dynamic feedback controller.…”

Section: Introductionmentioning

confidence: 99%

Management of solar energy in microgrids using IoT-based dependable control

Phung

Villefromoy

2017

2017 20th International Conference on Electrical Machines and Systems (ICEMS)

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Abstract-Solar energy generation requires efficient monitoring and management in moving towards technologies for netzero energy buildings. This paper presents a dependable control system based on the Internet of Things (IoT) to control and manage the energy flow of renewable energy collected by solar panels within a microgrid. Data for optimal control include not only measurements from local sensors but also meteorological information retrieved in real-time from online sources. For system fault tolerance across the whole distributed control system featuring multiple controllers, dependable controllers are developed to control and optimise the tracking performance of photovoltaic arrays to maximally capture solar radiation and maintain system resilience and reliability in real time despite failures of one or more redundant controllers due to a problem with communication, hardware or cybersecurity. Experimental results have been obtained to evaluate the validity of the proposed approach.

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Application of new control strategy for sun tracking

Cited by 165 publications

References 10 publications

Control de Posición e Inercial de Plataforma de Dos Grados de Libertad

Control de Posición e Inercial de Plataforma de Dos Grados de Libertad

Optimization Controller for Mechatronic Sun Tracking System to Improve Performance

Management of solar energy in microgrids using IoT-based dependable control

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