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Electric-vehicle propulsion power-conversion device

A power conversion device and technology of power conversion, applied in the direction of power consumption devices, battery circuit devices, circuit devices, etc., to achieve the effect of good system efficiency

Inactive Publication Date: 2012-05-23
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the other hand, the use of friction brakes causes a part of the kinetic energy of the electric train, which can originally be regenerated, to be discarded as heat in the atmosphere, so there is a problem from the viewpoint of energy saving.

Method used

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Examples

Experimental program
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Embodiment approach 1

[0030] figure 1 It is a figure which shows the structural example of the electric train propulsion power conversion apparatus in Embodiment 1 of this invention. Such as figure 1 As shown, electric power from a substation (not shown) as an external power source is input from the overhead line 1 via the power collector 2 to the converter unit 10 as the first power conversion unit, eg, a DCDC converter. The return current from the inverter unit 10 is connected to the rail 4 via the wheel 3, and returns to the negative side of the substation (not shown).

[0031] The converter unit 10 includes a converter circuit 13 as a main circuit that performs DC / DC conversion, and a converter control unit 14 as a first control unit. Furthermore, the converter circuit 13 is preferably a bidirectional buck-boost chopper circuit. In addition, the converter circuit 13 generally includes a filter circuit composed of a reactor and a capacitor for smoothing the voltage and current on the input si...

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PUM

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Abstract

Provided is an electric-vehicle propulsion power-conversion device that is suited for usages wherein power regeneration from an inverter unit (30) to a power storage unit (50), and power supplying from the power storage unit (50) to the inverter unit (30) are frequently used. The electric-vehicle propulsion power-conversion device is provided with: a converter unit (10) that has a power supply voltage input thereto from outside, converts the voltage to a direct current with a prescribed value, and outputs the direct current; the inverter unit (30) that is connected to the output side of the converter unit (10), and drives a motor (40); and the power storage unit (50) that is connected to the output side of the converter unit (10). A converter control unit (14) provided within the converter unit (10) generates current commands for the converter unit (10), and controls the charging-discharging of the power storage unit (50) on the basis of those current commands.

Description

technical field [0001] The present invention relates to a power converting apparatus for propulsion of an electric train used for propulsion control of an electric train. Background technique [0002] Generally, electric trains have a structure in which electric power is obtained from an overhead line by a power collector, and a motor is driven by a power conversion device such as an inverter using the obtained electric power to travel. [0003] In addition, in electric trains, so-called regenerative braking is used to obtain a braking force by regeneratively operating an electric motor when braking a vehicle. The regenerative power generated at this time is supplied to loads such as other power running vehicles and vehicle air conditioners that exist near the own vehicle via overhead lines, third rails, and the like, and is consumed there. [0004] However, in mornings, nights, and idle line sections with a small number of trains in operation, there may be cases where ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/14B60L9/18B60L50/11
CPCY02T10/7022B60L11/1812H02M5/4585Y02T90/14Y02T10/7241B60L7/14Y02T10/7005B60L2240/421B60L11/005B60L2240/36B60L9/22Y02T10/7216B60L2210/10Y02T10/705H02J7/34B60L9/18B60L2240/423B60L11/04B60L2240/12B60L11/1803Y02T90/127B60L15/2009B60L11/1872B60L3/0046B60L2240/545B60L7/16Y02T10/7077Y02T10/7088Y02T10/642B60L2240/529B60L2200/26Y02T10/92Y02T10/7072B60L7/26B60L9/28B60L2240/526B60L2240/547B60L2240/549B60L2240/527B60L53/22B60L50/53B60L50/40B60L50/51B60L58/25B60L58/24B60L58/15B60L58/14Y02T10/64Y02T10/70Y02T10/72B60L50/50B60L13/00Y02T90/12
Inventor 北中英俊
Owner MITSUBISHI ELECTRIC CORP
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