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  • Bollin, Elmar (25) (remove)

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A Model Predictive Control based Peak Shaving Application for a Grid Connected Household with Photovoltaic and Battery Storage (2018)
Dongol, Deepranjan ; Feldmann, Thomas ; Bollin, Elmar
Cell lifetime diagnostics and system be-havior of stationary LFP/graphite lithium-ion batteries (2018)
Yagci, Mehmet C. ; Bessler, Wolfgang G. ; Feldmann, Thomas ; Bollin, Elmar
PHOTOPUR - PV Powered Water Decontamination for Wine Growers (2018)
da Costa Fernandes, Jesus Salazar ; Schmidt, Michael ; Bollin, Elmar ; Ziebold, Florian ; Lapp, Simone
An energy oriented design concept was developed within the research project PHOTOPUR which has the development of a PV powered water cleaning system as main focus. During a wine season Plant Protection Products (PPP) are several times sprayed on plants to protect them of undesired insects and herbs or avoid hazardous fungus types. A work package of the project partner INES in Offenburg led to a design introducing energy profiling already in the early beginning of a product design. The concept is based on three pillars respecting first the requirements of the core process making up filtering and cleaning and secondary aspects which run, support, maintain and monitor the system to secure availability and product reliability. The presented paper shows that the results of the design tools guided the developers to assemble a functional model of the water decontamination unit which was manually tested with its concatenated steps of the water cleaning process.
IDB - Simulation and automation assisted information and control tool for sustainable building operation (2005)
da Costa Fernandes, Jesus Salazar ; Feldmann, Thomas ; Bollin, Elmar
Sustainable Aspects force a building manager to continuous observation of actual states and developments concerning building use, energy and media flows.In the presented approach a communication structure was built up to use different software applications and tools in order to optimize the operation of the building.
Reviewing the Load Shift Potential of Thermally Activated Building Systems Applying Model Predictive Control (2016)
Höll, Julien ; Bollin, Elmar
The uncertain and time-variant nature of renewable energy results in the need to deal with peaks in the production of energy. One approach is to achieve a load shift and thereby help balancing the grid by using thermally Activated Building Systems (TABS). Control systems currently in place do not exploit the full potential of TABS. This paper reviews how Model Predictive Control can possibly reduce the fluctuations of the demand and supply of (renewable) energy as it enables the TABS to react to the dynamics of weather and its impact on the grid at any time.
Use of load profiles to optimize microgrids of non-residential environments (2017)
da Costa Fernandes, Jesus Salazar ; Schmidt, Michael ; Feldmann, Thomas ; Bollin, Elmar
Three real-lab trigeneration microgrids are investigated in non-residential environments (educational, office/administrational, companies/production) with a special focus on domain-specific load characteristics. For accurate load forecasting on such a local level, à priori information on scheduled events have been combined with statistical insight from historical load data (capturing information on not explicitly-known consumer behavior). The load forecasts are then used as data input for (predictive) energy management systems that are implemented in the trigeneration microgrids. In real-world applications, these energy management systems must especially be able to carry out a number of safety and maintenance operations on components such as the battery (e.g. gassing) or CHP unit (e.g. regular test runs). Therefore, energy management systems should combine heuristics with advanced predictive optimization methods. Reducing the effort in IT infrastructure the main and safety relevant management process steps are done on site using a Smart & Local Energy Controller (SLEC) assisted by locally measured signals or operator given information as default and external inputs for any advanced optimization. Heuristic aspects for local fine adjustment of energy flows are presented.
Prognosegestützte TABS-Steuerung (2013)
Bollin, Elmar
Bürogebäude mit Zukunft - energetische Bewertung des Solar Info Center (SIC) Freiburg. (2008)
da Costa Fernandes, Jesus Salazar ; Feldmann, Thomas ; Bollin, Elmar
Improving the energy yield of power of PV power plants through internet based simulation, monitoring and visualization (2005)
Eicker, Ursula ; Pietruschka, Dirk ; Schumacher, Jürgen ; da Costa Fernandes, Jesus Salazar ; Feldmann, Thomas ; Bollin, Elmar
In this paper, a new method is demonstrated for onlin e remote simulation of photovo ltaic systems. The required communication technology for the data exchange is introduced a nd the methods of PV generato r parameter extraction for the simulation models are analysed. The method shown for parameter extraction from the ma nufacturer data is especially useful for the commissioning procedure, where the measured installed pow er is transferred to standard test conditions using the simulation model and can then be easily compared with the de sign power. At a simulation accuracy of 2% using the software environment INSEL ® any problems with the PV gene rator can reliably be detected. Online simulation of a grid connected PV generator is then carried out during the operation of the photovoltaic plant. The visualisation includes both the monitored and the simulated online data sets, so that a very efficient fault detection scheme i s available. The method is implemented and validated on several grid connected photovolta ic power plants in Germany. It is excellently suited to provide automatic and real time fault detection and significantly impr ove the commissioning procedure for photovoltaic plants of all sizes.
Nachhaltigkeitskriterien im Facilitymanagement (2004)
Bollin, Elmar
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