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Power-conversion method and device and vehicle comprising such a device

A technology for transportation and current conversion, applied in output power conversion devices, power consumption devices, high-efficiency power electronic conversion and other directions, can solve problems such as efficiency loss, achieve extended service life, reduce peak and RMS common mode current, Effect of increasing voltage and supply current

Inactive Publication Date: 2018-06-05
UNIV CLERMONT AUVERGNE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these devices exhibit loss of efficiency caused by a large number of switching, zero voltage also known as zero sequence voltage (ZSV) and common mode voltage (CMV)

Method used

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  • Power-conversion method and device and vehicle comprising such a device
  • Power-conversion method and device and vehicle comprising such a device
  • Power-conversion method and device and vehicle comprising such a device

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Experimental program
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specific Embodiment approach 20

[0142] figure 2 A specific embodiment 20 of the apparatus that is the subject of the present invention is depicted, the apparatus 20 comprising:

[0143] - two three-phase inverters 225 and 235, each inverter 225 or 235 is controlled by the modulation of at least six space vectors, the output voltage of each inverter is determined by a space called "reference space vector" The vector gives,

[0144] - means for applying 255 the activation sequence 260 to the space vector of an inverter 225,

[0145] - a mechanism for applying 255 an activation sequence 265 to a space vector of another inverter 230,

[0146] - a mechanism for subtracting the reference space vector of one inverter 225 from the reference space vector of the other inverter 235, and

[0147] - Mechanisms 205 and 210 for connection to an electrical power supply source 200 .

[0148] The inverter 225 includes six power switches 230 controlled by a mechanism for applying 255 an activation sequence 260 . Three pa...

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Abstract

The present invention relates to a power-conversion method (10) for a vehicle comprising: a three-phase electric motor, two three-phase inverters, each inverter being controlled via modulation of at least six spatial vectors, the output voltage of each inverter being given by a spatial vector referred to as reference spatial vector. Said method comprises the following steps: applying (11) an activation sequence to the spatial vectors of one inverter, applying (12) an activation sequence to the spatial vectors of the other inverter, subtracting (13) the reference spatial vector of one inverterfrom the reference spatial vector of the other inverter and supplying (14) the electric motor with electric power, the voltage inducing the electric power being relative to the vector resulting from the subtraction.

Description

technical field [0001] The present invention relates to a method and device for converting electrical current and means of transport comprising such a device. [0002] The invention is applicable to the field of electronics. [0003] More specifically, the invention applies to the field of DC current conversion for powering an electric motor of an at least partially electrically driven vehicle. Background technique [0004] In electric traction equipment such as trains and trams and in portable variable speed drives, the main goal of the electrical energy conversion segment is to increase the autonomy and performance of electric and hybrid vehicles while limiting costs. [0005] Currently, DC power supply devices for electric motors of hybrid vehicles include autonomous or non-autonomous power supply sources whose delivery voltage must be increased to make sufficient voltage at the terminals of the three-phase inverter supplying current to the electric motor. [0006] Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/08H02M7/5387
CPCH02M7/53873B60L50/51H02P27/08Y02T10/70Y02B70/10H02P21/22H02M1/12H02M1/14H02M7/5395B60L2210/44B60L2220/14H02M1/0058H02M1/44
Inventor 克哈利尔·埃尔-克哈姆利奇-德里西阿巴斯·德卡尼奇亚德伊克里斯托夫·帕司基
Owner UNIV CLERMONT AUVERGNE