Energy-intensive companies have to prove energy management since the amendment of the tax law 2014. In addition, the prices for the supply of electrical energy for commercial customers have almost doubled in the last ten years. Energy costs are therefore a major component of production costs.
To enable companies to control their production in an energy-efficient way, the Fraunhofer IPT and its partners of "eMES" developed a software prototype for energy-oriented production control and regulation. This tool provides transparency about current energy consumption, monitors it continuously by means of a connected energy controlling system and enables the user to react proactively based on a short-term forecast of deviations. In addition, the system allows the integration of the energy supplier's tariff structures as control parameters in the calculation.
The energy control loop concept, which was developed in "eMES", extends the existing production control loop by energy target variables. In order to determine the product-related energy requirements, the products are classified. The optimization algorithm developed for the research project is compared with a manual control and a first-in-first-out control with regard to energy, downtime and delay costs. Warning and intervention limits including intervention rules are defined by means of a control chart. The validation of the obtained results was carried out at an application partner with an energy-intensive production.
German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt e. V.)