US 2014/0207322 A1Published application

Propulsion control apparatus for electric motor car

AssigneeMitsubishi Electric Corporation

InventorKeita Hatanaka

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Abstract

A propulsion control apparatus includes first and second power converting units capable of performing bidirectional power flow control, an ACL provided on each alternating-current end side of the power converting units, a first switching device performing connection switching to connect a power storage device or a direct-current overhead wire to each direct-current end of the power converting units, a second switching device switching connection of the alternating-current end of the first power converting unit to either the ACL or an AC motor side, a third switching device switching connection of the alternating-current end of the second power converting unit to either the ACL or the AC motor side, a fourth switching device switching connection of the AC motor to either the first power converting unit side or the second power converting unit side, and a control unit controlling operations of the power converting units and the switching devices.

Claims19

Dependent claims

A propulsion control apparatus for an electric motor car that includes a power storage device and an alternating-current motor and performs propulsion control on the alternating-current motor using direct-current power supplied from a direct-current overhead wire and the power storage device, the apparatus comprising:

first and second power converting units that are capable of performing bidirectional power flow control and operate as at least any one of a step-up chopper, a step-down chopper, a step-up/down chopper, and an inverter according to a connection form;
an alternating-current reactor provided on a side of each of alternating-current ends of the first and second power converting units;
a first switching device that has a switching function of switching which one of the power storage device and the direct-current overhead wire is connected to a direct-current end of the first power converting unit and switching which one of the power storage device and the direct-current overhead wire is connected to a direct-current end of the second power converting unit;
a second switching device that has a switching function of connecting the alternating-current end of the first power converting unit to either the alternating-current reactor or the alternating-current motor side and connecting the direct-current end of the first power converting unit to the alternating-current reactor;
a third switching device that has a switching function of connecting the alternating-current end of the second power converting unit to either the alternating-current reactor or the alternating-current motor side and connecting the direct-current end of the first power converting unit to the alternating-current reactor;
a fourth switching device that switches a connection of the alternating-current motor to either the first power converting unit side or the second power converting unit side;
and
a control unit that controls an operation of the first and second power converting units and an operation of the first to fourth switching devices.

5 more elements

A propulsion control apparatus for an electric motor car that includes a power storage device and first and second alternating-current motors and performs propulsion control on the first and second alternating-current motors using direct-current power supplied from a direct-current overhead wire and the power storage device, the apparatus comprising:

first and second power converting units that are capable of performing bidirectional power flow control and operate as at least any one of a step-up chopper, a step-down chopper, a step-up/down chopper, and an inverter according to a connection form;
an alternating-current reactor provided on a side of each of alternating-current ends of the first and second power converting units;
a first switching device that performs connection switching such that one of the power storage device and the direct-current overhead wire is connected to each of direct-current ends of the first and second power converting units;
a second switching device that switches a connection of the alternating-current end of the first power converting unit to either the alternating-current reactor or the first alternating-current motor;
a third switching device that switches a connection of the alternating-current end of the second power converting unit to either the alternating-current reactor or the second alternating-current motor;
and
a control unit that controls an operation of the first and second power converting units and an operation of the first to third switching devices.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/235,641Filed 29 Jul 2011
Published: 24 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification25 codes

B60L 9/18
Using AC induction motors: fed from DC supply lines
B60L 1/003
Supplying electric power to auxiliary equipment of vehicles: to auxiliary motors, e.g. for pumps, compressors
B60L 3/003
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to inverters
B60L 8/003
Electric propulsion with power supply from forces of nature, e.g. sun or wind: converting light into electric energy, e.g. by using photo-voltaic…

Family

US 9,145,060 B2Related patent
US 2014/0207322 A1This patent

From the US filing history. Foreign family members aren’t listed.

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