US 2017/0001538 A1 · TRAMCAR POWER SYSTEM AND METHOD FOR CONTROLLING THE SAME

Abstract

Disclosed are a tramcar power system and a method for controlling the system, the system comprising: a fuel cell (11) coupled to an unidirectional direct-current converter (14); a super capacitor (12) coupled to a first bi-directional direct-current converter (15); and a power battery (13) coupled to a second bi-directional direct-current converter (16), wherein the unidirectional direct-current converter (14), the first bi-directional direct-current converter (15) and the second bi-directional direct-current converter (16) are coupled to an inverter (18) via a direct-current bus (17); the inverter (18) is coupled to a motor of the tramcar; the fuel cell (11), the super capacitor (12), the power battery (13), the first bi-directional direct-current converter (15), the second bi-directional direct-current converter (16) and the inverter (18) are coupled to a master control unit (19); and the master control unit (19) is coupled to a controlling device of the tramcar.

Claims12

Dependent claims

A tramcar power system, comprising:

a fuel cell, a super capacitor, a power battery, an unidirectional direct-current converter, a first bi-directional direct-current converter, a second bi-directional direct-current converter, a direct-current bus, an inverter, and a master control unit,
wherein the fuel cell is coupled to the unidirectional direct-current converter, the super capacitor is coupled to the first bi-directional direct-current converter, and the power battery is coupled to the second bi-directional direct-current converter;
the unidirectional direct-current converter, the first bi-directional direct-current converter and the second bi-directional direct-current converter are coupled to the inverter via the direct-current bus;
the inverter is coupled to a motor of the tramcar;
the fuel cell, the super capacitor, the power battery, the first bi-directional direct-current converter, the second bi-directional direct-current converter and the inverter are coupled to the master control unit;
and
the master control unit is coupled to a tramcar controlling device of the tramcar.

4 more elements

A method for controlling a tramcar power system, comprising:

receiving, by a master control unit, a signal sent from a vehicle controlling device of the tramcar;
controlling a super capacitor to supply electrical energy to a motor of the tramcar, if the signal received by the master control unit from the vehicle controlling device is a tramcar start signal or a tramcar acceleration signal;
controlling a fuel cell and/or a power battery to continue to supply electrical energy to the motor, or, controlling the fuel cell and/or the power battery to supply electrical energy to the motor, when the tramcar has not yet reached a target speed while the super capacitor has been completely discharged;
and controlling the super capacitor to supply electrical energy required for making up the balance power, when the tramcar has not yet reached a target speed while power provided by the fuel cell and/or the power battery is insufficient;
controlling the fuel cell and/or the power battery to continue to supply electrical energy to the motor, if the signal received by the master control unit from the vehicle controlling device is a steady-speed signal;
and
controlling the fuel cell to supply electrical energy to the motor, and controlling the super capacitor and/or the power battery to absorb surplus braking feedback energy, or controlling the fuel cell to charge the super capacitor and/or the power battery, if the signal received by the master control unit from the vehicle controlling device is a brake signal or deceleration signal.

4 more elements

Dependencies are inferred from the claim text.

Tramcar power system and method for controlling the same

Life of this patent

Tramcar power system and method for controlling the same

Life of this patent

Abstract

Claims12