HEATING SYSTEM WITH FUEL CELLS AND IN CONNECTION TO PUBLIC ELECTRICAL NETWORK

摘要

PURPOSE: A heating system with fuel cells and in a connection to a public electrical network is provided to ensure necessary functions of the heating system as the fuel supply into the fuel cells having first priority without being supported by galvanic batteries and to continue to maintain at least the necessary functions of the space heating system by a control unit and circuits. CONSTITUTION: A heating system with fuel cells is coupled to a public electrical network. In the system, a fuel is supplied to the fuel cells in gaseous form through a main gas valve for the production of thermal and electrical energy. The main gas valve has a control unit to automatically shutdown an operation when the supply of the current is interrupted. At least a part of the electrical energy is fed to the public electrical network and the thermal energy is delivered to a heating circuit which is operable with electrical energy from the network. An electrical inverter(4) for converting direct current of the fuel cells into alternating current is operated in two operating states for a feed into the public network and for a feed into the island network of the system.