NOVELTY - Generating hydrogen by using a fuel cell power generation system (200) involves: generating the hydrogen from the cathode (220) by switching on between the anode (210) and the cathode during a first period only by using the mechanical switch (270) while the electronic switch (242) is not operated; producing the electrical energy from the fuel cell (250) by using the hydrogen generated from the cathode; starting the electronic switch by using the electrical energy produced from the fuel cell; and generating the hydrogen by controlling operation of the electronic switch.    USE - For generating hydrogen (claimed).    ADVANTAGE - The fuel cell power generation system can make the whole size smaller and reduce the manufacturing cost without an auxiliary power source (such as batter) for starting a controller.    DETAILED DESCRIPTION - Generating hydrogen by using a fuel cell power generation system (200) comprising an electrolytic bath (230) configured to contain electrolyte solution (235); an anode (210) placed inside the electrolytic bath and configured to generate an electron; a cathode (220) placed inside the electrolytic bath and configured to generate the hydrogen by receiving the electron from the anode; an electronic switch (242) electrically connected to the anode and the cathode and configured to control flow of electricity between the anode and the cathode; a mechanical switch (270) electrically connected to the electronic switch in parallel and configured to flow electricity between the anode and the cathode in order to start the electronic switch; and a fuel cell (250) configured to generate electrical energy by converting chemical energy of the hydrogen generated from the cathode, involves: generating the hydrogen from the cathode by switching on between the anode and the cathode during a first period only by using the mechanical switch while the electronic switch is not operated; producing the electrical energy from the fuel cell by using the hydrogen generated from the cathode; starting the electronic switch by using the electrical energy produced from the fuel cell; and generating the hydrogen by controlling operation of the electronic switch.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a fuel cell power generation system.    Fuel cell power generation system (200)    Anode (210)    Cathode (220)    Electrolytic bath (230)    Electrolyte solution (235)    Electronic switch (242)    Fuel cell (250)    Mechanical switch (270)