Loading patent…
AssigneeHitachi, Ltd.
InventorsTomomichi Ito, Tetsuya Kato, Takashi Ikimi
Estimating the term…
An energy saving type feeder voltage compensation apparatus improved in availability at low temperatures, wherein when a secondary battery is lower in temperature than a predetermined value, an output voltage output to a feeder side is made equal to or higher than a no-load output voltage of a substation connected in parallel. Power is supplied to a power running rolling stock preferentially from the secondary battery. The heating value of the secondary battery is increased and the battery temperature is raised by this discharging, whereby internal resistance of the secondary battery is lowered, and the charging and discharging loss is suppressed, and the efficiency and availability of the energy saving type feeder voltage compensation apparatus as a whole are improved.
An energy saving type feeder voltage compensation apparatus including a power converter connected between a feeder and a secondary battery so as to give and receive power in a bilateral direction, and a control apparatus for causing surplus power on the feeder to charge the secondary battery by using the power converter and causing the secondary battery to be discharged using the power converter in response to feeder power demand from a power running rolling stock,
An energy saving type feeder voltage compensation apparatus including two voltage compensation apparatuses connected to a feeder supplied with power from a substation, secondary batteries respectively provided in the voltage compensation apparatuses, power converters respectively provided in the voltage compensation apparatuses so as to give and receive power in a bilateral direction between the feeder and the secondary batteries, and control apparatuses for causing surplus power on the feeder to charge the secondary batteries by using the power converters and causing the secondary batteries to be discharges using the power converters in response to feeder power demand from a power running rolling stock,
An energy saving type feeder voltage compensation method using a power converter connected between a feeder and a secondary battery so as to give and receive power in a bilateral direction, to cause surplus power on the feeder to charge the secondary battery and cause the secondary battery to be discharged in response to feeder power demand from a power running rolling stock,
Dependencies are inferred from the claim text.