Control strategy for an off-grid hybrid stirling engine/supercapacitor power generation system

International audienceThis paper presents a novel control strategy for a hybrid Stirling engine/supercapacitor power generation system functioning in isolated sites rich in sunshine. The controller should drive the system using its electrical part to satisfy the varying load demand and maintain the state of charge of the supercapacitor at an appropriate level. The system comprises a thermodynamic machine (Stirling Engine) that drives a Permanent Magnet Synchronous Generator (PMSG). An appropriate power electronics is interfaced between this PMSG and the AC load we want to supply. In order to meet the load demand in transients, a supercapacitor is used and its delivered power is controlled by mean o a DC/DC buck-boost converte

Control Strategy For An Off-Grid Hybrid Stirling Engine/Supercapacitor Power Generation System

International audienceThis paper presents a novel control strategy for a hybrid Stirling engine/supercapacitor power generation system functioning in isolated sites rich in sunshine. The controller should drive the system using its electrical part to satisfy the varying load demand and maintain the state of charge of the supercapacitor at an appropriate level. The system comprises a thermodynamic machine (Stirling Engine) that drives a Permanent Magnet Synchronous Generator (PMSG). An appropriate power electronics is interfaced between this PMSG and the AC load we want to supply. In order to meet the load demand in transients, a supercapacitor is used and its delivered power is controlled by mean o a DC/DC buck-boost converte

Experimental Validation of a Novel Control Strategy For An Off-Grid Hybrid Stirling Engine/Supercapacitor Power Generation System

International audienceIn this paper a novel optimal control strategy for energy management of an off-grid hybrid Stirling engine/Supercapacitor power plant is presented based on preliminary results proposed in \cite{Rahmani2013}. An implementation of the control strategy is performed on a real time target that drives a dedicated testbed with a DC machine reproducing the functioning of the thermodynamic Stirling Engine. The DC machine is linked to a Permanent Magnet Synchronous Generator (PMSG) connected to an AC load through an appropriate controlled Power electronics and an energy storage device which is a supercapacitor. The performances of the developed control Strategy are then assessed through experimental results on the testbed