The invention discloses a tramcar power
system and a control method. The
system is characterized in that a fuel battery is connected with a unidirectional direct-current converter; a super
capacitor is connected with a first bidirectional direct-current converter; a
power battery is connected with a second bidirectional direct-current converter; the unidirectional direct-current converter, the first bidirectional direct-current converter and the second bidirectional direct-current converter are connected with an
inverter by direct-current buses; the
inverter is connected with a motor of a tramcar; the fuel battery, the super
capacitor, the
power battery, the first bidirectional direct-current converter, the second bidirectional direct-current converter and the
inverter are connected with a main
control unit; the main
control unit is connected with a control device of the tramcar. According to the tramcar power
system and the control method, the super
capacitor, the fuel battery and the
power battery are matched for supplying power so that the disadvantages that energy of the super capacitor is not enough and the power property of the power battery is not enough are solved, and the
disadvantage complementation of energy-storing parts is realized; the fuel battery and the power battery are mutually redundant so as to realize the emergency rescuing under a fault condition of a power supplying part.