Vela Solaris Home

Press contact

You are interested in Vela Solaris and Polysun and need more information about the company/product? We are happy to provide you with more information, please

Ico - Go Page contact us


Here you will find an extract of different publications about Polysun. Please contact us should you have specific questions or need advice.


See the German site for German-language publications.

09.11.2017 Download PDF Marc Jakobi
Master’s thesis: Development of model-based control applications compliant with IEC 61499 for building energy systems with a focus on photovoltaics

Political marginal conditions for PV systems, such as feed-in limitations have resulted in the need for intelligent operation strategies. Proprietary solutions available on the market today are costly and intelligent controllers for building energy systems can thus be classified as luxury products. There is a need for generic software based on standards for the control of multi-generator systems. This thesis aims to provide an open source solution that can be used on a variety of inexpensive hardware. Communication libraries that enable co-simulations between IEC 61499 control systems and simulation software (Matlab® and Polysun®) are developed. Using the libraries and simulation tools, models and algorithms are transferred to IEC 61499 control applications with the industry compatible, open source environment 4diac. The applications are then deployed and prepared for use in the field….

15.09.2017 Download PDF EU PVSEC 2017
Development of a model-based control application compliant with IEC 61499 for building energy systems with a focus on photovoltaics

Two communication libraries were developed that enable the co-simulation of IEC 61499 control applications with Matlab and the solar simulation software Polysun. With these libraries, control applications can be designed directly in an IEC 61499 IDE, without having to be prototyped and then ported over….

13.10.2016 Download PDF Eurosun 2016
Teaching Renewable Energy Systems by use of Simulation Software

Experience in using simulation software for teaching solar energy and heat pump applications are presented at the Eurosun 2016 conference. The authors discuss suitable didactic concepts specifically developed for teaching renewable energy and energy efficiency topics. Two main advantages of applying simulation software in solar education are identified: 1) simulation can provide an understanding of data that is otherwise not accessible (e.g. cumulated operating hours and number of starts of a heat pump depending on control strategy); 2) use of simulation software in teaching have a positive influence on the motivation and attitude of the students….

27.03.2015 Download PDF Chinese Solar Cooling Conference 2015 (SCC 2015)
Solar Cooling Simulation for Planning and Optimization

Physics-based dynamic simulation of solar cooling systems for planning and optimizing solar cooling systems is presented. Heat assisted cooling, free cooling as well as cooling machines driven by photovoltaic electricity are covered. The study presents a comparison between the different techniques as well as a practical guide for using simulation for solar cooling applications….

26.09.2014 Download PDF EU PVSEC 2014
Fast simulation algorithm for PV self-consumption with heat pump systems

Self-sufficiency of systems with photovoltaic (PV) energy production gets more and more important. Demand side management with the use of heat pump and thermal energy storage has proven to be an efficient and effective means for increasing the PV self-consumption ratio. Accurate prediction of the self-consumption and the resulting self-sufficiency quota requires a comprehensive simulation including heat pump characteristics, thermal balance of the building and hot water demand profiles. These simulations are usually elaborate and time consuming. This work presents a fast but reliable estimate of the system’s PV self-consumption potential…

16.09.2014 Download PDF Presented at EUROSUN 2014, Aix-les-bains, France, September 2014
SOLNET - PHD-Scholarships and courses on solar heating

The scolarshop project “SHINE” was launched in autumn 2013 in the frame work of the Marie Curie program of the European Union (Initial Training Network, ITN). 13 PhD-scholarships on solar district heating, solar heat for industrial processes, as well as sorption stores and materials are carried out in this framework, one of which is hosted at Vela Solaris. The program is the continuation of the famous SolNet Network that has been coordinated by the Institute of Thermal Engineering at Kassel University, Germany. The network offers PhD courses on solar heating and cooling, conference-accompanying Master courses, placements of internships, and PhD scholarship projects….

Weitere Archiv Seiten