On a New Parallel Tracking System for Accurate Orientation of Concentrated Solar Convertors

Mircea Neagoe; Ion Visa; Nadia Cretescu; Macedon Moldovan

doi:10.4028/www.scientific.net/AMM.658.105

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 658On a New Parallel Tracking System for Accurate...

On a New Parallel Tracking System for Accurate Orientation of Concentrated Solar Convertors

Abstract:

The concentrated solar energy convertors (e.g. solar-thermal dish, concentrated photovoltaic) require high tracking accuracy to maintain low incidence angles of the solar ray in relation with the concentrator optical axis (e.g. tracking accuracy of 0.05°...0.1°). This functional requirement is currently ensured by the high performance dual-axis solar tracking systems, able to reach the imposed accuracy, including expensive rotary actuator solutions. This paper proposes a new high accuracy tracking system for diurnal orientation, integrating a 2 DOF parallel linkage driven by linear actuators, as a simple, accurate, and cost-effective solution. A kinematic and static approach used for optimisation of the driving programs of the two linear actuators is presented, following the requirements: a) ensure the imposed tracking accuracy and b) achieve advantageous transmitting angles and hence lowest driving forces. The performances of the system are analysed on large orientation strokes (over 130°); the results obtained confirm the viability of the new tracking system concept, with higher performances compared to other similar known solutions.

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Periodical:

Applied Mechanics and Materials (Volume 658)

Pages:

105-110

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.658.105

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Online since:

October 2014

Authors:

Mircea Neagoe*, Ion Visa, Nadia Cretescu, Macedon Moldovan

Keywords:

Accurate Orientation, Concentrated Solar Convertors, Linear Actuators, Optimization, Parallel Linkage, Simulation, Solar Tracking

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* - Corresponding Author

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