@article{RaeyatdoostEcclestonWolf2019, author = {Niloofar Raeyatdoost and Robin Eccleston and Christian Wolf}, title = {Flexible Methane Production Using a Proportional Integral Controller with Simulation‐Based Soft Sensor}, series = {Chemical Engineering \& Technology}, volume = {43}, number = {1}, publisher = {Wiley-VCH}, doi = {10.1002/ceat.201900401}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:832-epub4-15708}, pages = {75 -- 83}, year = {2019}, abstract = {Anaerobic digestion plants have the potential to produce biogas on demand to help balance renewable energy production and energy demand by consumers. A proportional integral (PI) controller is constructed and tuned with a novel tuning method to control biogas production in an optimal manner. In this approach, the proportional part of the controller is a function of the feeding rate and system's degree of stability. To estimate the degree of stability, a simulation‐based soft sensor is developed. By means of the PI controller, the requirement for gas storage capacity of the digester is reduced by approximately 30 \% compared to a constant, continuous feeding regime of the digester.}, language = {en} }