DC-DC converters are main part of Fuel
Cells power sources in power range 1...1000W.
Output voltage of one cell is higly
dependant of the load and usualy varies between 1V without load down to
0.6 V on full load. If 20 cell stack is used, output voltage will be in
the range 12...20 V. For this purpose DC-DC converters ar used. They
accept variable input voltage, giving at the output constant voltage
independent of the load. They are two types : step-up when output is
higher than input voltage and step down when output is lower than input
Our base series of DC-DC converters
are step-up type for power ranges 1 to 1000W. They have extremely high
efficiency limited only by the level of semiconductors science at present.
with input voltage from 1.2 down to 0.6 V and
input curent up to 50 A is designed
giving 150 w developed and produced by Hydrocell Ltd. Finland. Each fuel cell contains internal MH storage for hydrogen giving 50 Whrs/cell - total 300 Whrs capacity without external suply tank.