Convion Ltd. is a leading fuel cell system developer committed to commercializing solid oxide fuel cell (SOFC) systems in power range above 50 kW for distributed power generation. In 2015 Convion started validation of its upcoming C50 product in a 20 kW scale. The test unit, based on Plansee/IKTS stack technology, has successfully accumulated 5000 hours of operation with power delivery to the utility grid with high reliability and efficiency exceeding 50% (net Ac) in natural gas or bio gas operation. Convion has also successfully demonstrated ability to automatically switch between grid parallel and grid independent operation to provide ability to secure critical customer loads in grid outage situations. During the validation period the test unit has undergone both long term steady state nominal as well as well as part-load and transient operation testing. Performance and emissions of the system have been characterized. The presentation will highlight Convion’s unique approach for combining simplicity, robustness, performance and flexibility in a SOFC system to address cost competitiveness challenges. Key findings on the experiences from the 20 kW operation regarding performance, emissions, islanding, thermal cycling and effects of a multi-stack configuration will be presented.
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