POWER SYSTEM OF HYBRID FUEL CELL BUS AND CONTROL METHOD THEREOF

摘要

A power system of a hybrid fuel cell bus and a control method thereof are provided to reduce development time and cost of a fuel cell bus system by using conventional 12V and 24V electrical parts. A super capacitor(30) is connected to a fuel cell stack(10) and charged by the fuel cell stack. A driving motor(40) is supplied with power from one or both of the fuel cell stack and the super capacitor to drive a bus and supplies power generated by regenerative braking to the super capacitor. A motor control unit(45) controls power input and output into and from the driving motor. First and second auxiliary batteries(50,60) supply power to first and second electrical parts using different voltages. Stack starting parts(20) are electrically connected to any one of the first and second auxiliary batteries and operate the fuel cell stack.