Input current controlled DC interconnection converter for fuel cell systems

A fuel cell energy system is under development For supply of generated elec trical energy to telecommunications equipment. It is a concentration system , the heat energy recovered is used to cool the telecommunications equipmen t. For this system, a method is described for controlling a new DC intercon nection converter. Its DC interconnection characteristics are also discusse d. The new converter controls its input current to the fuel cell rated curr ent at maximum and can operate stably even when the fuel cell voltage decre ases. This allows good DC interconnection characteristics to be obtained in both the steady state and the transient state.