A Home Use Fuel Cell Generation System with an Energy Storage Device to Suppress the Surplus and Deficit Power Caused by a Reformer

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The summary of this research results is as follows:1. Development of the FC simulator with a reformer The FC simulator with a reformer has been constructed using a controllable dc power supply, and tested to demonstrate the validity of the constructed FC simulator.2. Development of the grid-connectable inverter for the FC The grid-connectable inverter for the FC has been constructed with a DSP-based control system, where the inverter acts as a power line conditioner. Thus the balanced and sinusoidal source currents are obtained generating the dc power by the FC.3. Confirmation of the surplus power in the home uses of the FC generation system We have demonstrated that the surplus and deficit power exits when the consumed power in a home is suddenly changed. Suppressing the surplus power is needed because the injection of the power generated by the FC generation system to power systems is not permitted by Japanese low. Thus the moment of inertia of the fly-wheel generator is decided.4. C … More onstruction of the fly-wheel generator The fly-wheel simulator with the dc motor drive system has been constructed on PSIM software, where the do motor drive system acts as a fly-wheel. The moment of inertia is controllable. Thus the constructed fly-wheel simulator is useful for various home uses.5. Construction of a FC generation system for home uses A FC generation system with a fly-wheel generator simulator has been constructed considering a typical Japanese home. In home uses of the FC generation system, the load conditions are suddenly changed. So the surplus and deficit power exists as described the above. We have demonstrated that the surplus and deficit power generated by the FC generation system are perfectly suppressed by the fly-wheel generator by digital computer simulation.6. Development of a EDLC simulator According to the development plan of the DOE, the response time of a reformer will be less than 2s by 2010. This means that an EDLC can be used to suppress the surplus and deficit power. Thus we have developed an EDLC simulator for home uses. Less