Transfer function development for SOFC/GT hybrid systems control using cold air bypass

摘要: Fuel cell gas turbine hybrids present significant challenges in terms of system control because the coupling different time-scale phenomena. Hence, importance studying integrated dynamics is critical. With aim safe operability and efficiency optimization, cold air bypass valve was considered an important actuator since it affects several key parameters can be very effective controlling compressor surge. Two tests were conducted using a cyber-physical approach. The Hybrid Performance (HyPer) facility couples equipment with cyber physical solid oxide fuel which hardware driven by numerical model operating real time. performed moving from nominal position 40% step 15% up down, while open loop, i.e. no on speed or inlet temperature. effect change analyzed transfer functions developed for variables such as cathode mass flow, total pressure drop surge margin. Transfer show response time variables, are used to characterize dynamic system. Opening resulted immediate positive impact A also significantly affected temperature, demonstrating that thermal management cell.