초록 ▼

In the case where internal temperature of fuel cells 40 has not reached a stationary level (step S26), a control unit 100 disconnects a secondary battery 60 from an inverter 70 (step S28) and controls the drive of a motor 80 (step S30), in order to cause the motor 80 to consume electric power suppli

In the case where internal temperature of fuel cells 40 has not reached a stationary level (step S26), a control unit 100 disconnects a secondary battery 60 from an inverter 70 (step S28) and controls the drive of a motor 80 (step S30), in order to cause the motor 80 to consume electric power supplied from the fuel cells 40 while the inverter 70 functions to prevent any torque from being produced at a drive shaft 82 of the motor 80. Such control enables the internal temperature of the fuel cells to be raised to the stationary level in a shortest possible time at the time of activating the fuel cells.

대표청구항 ▼

1. A fuel cells system having fuel cells that receive a supply of gaseous fuel and generate electric power, said fuel cells system comprising: a motor that is driven with the electric power output from said fuel cells; and a motor control unit that controls drive of said motor, wherein said mot

1. A fuel cells system having fuel cells that receive a supply of gaseous fuel and generate electric power, said fuel cells system comprising: a motor that is driven with the electric power output from said fuel cells; and a motor control unit that controls drive of said motor, wherein said motor control unit controls the drive of said motor, which is expressed equivalently by a d-q axes model, to make a value of electric current flowing through a q-axis winding in the d-q axes model substantially equal to zero and a value of electric current flowing through a d-axis winding in the d-q axes model equal to a predetermined value of not less than zero, out of electric current supplied from said fuel cells, at the time of activating said fuel cells. 2. A fuel cells system in accordance with claim 1, said fuel cells system further comprising: a temperature detection unit that measures internal temperature of said fuel cells, wherein said motor control unit controls the drive of said motor to vary the value of electric current flowing through said d-axis winding according to the observed internal temperature. 3. A fuel cells system in accordance with claim 1, said fuel cells system further comprising: a secondary battery that is capable of supplying electric power to said motor, in order to drive said motor; and a battery supply regulation unit that regulates a supply of electric power from said secondary battery to said motor, wherein said battery supply regulation unit cuts off the supply of electric power from said secondary battery to said motor at the time of activating said fuel cells. 4. A fuel cells system in accordance with claim 1, said fuel cells system further comprising: a gaseous fuel generation unit that produces the gaseous fuel from a supply of crude fuel and feeds the produced gaseous fuel to said fuel cells; and a flow regulation unit that regulates a flow rate of the gaseous fuel fed from said gaseous fuel generation unit to said fuel cells, wherein said flow regulation unit increases the flow rate of the gaseous fuel to be greater than a predetermined standard flow rate at the time of activating said fuel cells. 5. A fuel cells system in accordance with claim 4, said fuel cells system further comprising: a temperature detection unit that measures internal temperature of said fuel cells, wherein said flow regulation unit returns the flow rate of the gaseous fuel to the predetermined standard flow rate when the observed internal