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Novel electric vehicle drive system of integrating charger functions

A drive system and charger technology, applied in electric vehicles, current collectors, battery circuit devices, etc., can solve the problems of no compact design, no perfect function integration, no combination of efficient and reliable operation, etc., and achieve small torque ripple and fault tolerance The effect of strong ability and meeting the requirements of high reliability operation

Active Publication Date: 2016-07-06
SOUTHEAST UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The purpose of the invention is to solve the problems that the existing motor drive and on-board charger, the two main energy conversion components of electric vehicles, have no perfect function integration, no compact design, and no combination of efficient and reliable operation.

Method used

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  • Novel electric vehicle drive system of integrating charger functions
  • Novel electric vehicle drive system of integrating charger functions
  • Novel electric vehicle drive system of integrating charger functions

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Embodiment Construction

[0057] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0058] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0059] Such as figure 1 As shown, an integrated single-phase charger electric vehicle drive system based on dual-three-phase hybrid permanent magnet motor, including:

[0060] The ports of the motor windings 111 of the dual-three-phase hybrid permanent magnet motor 110 are respectively fed by the first voltage source inverter 11 and the second voltage source inverter 12, and the neutral points of the two sets of motor windings 111 are not connected. In the motor-driven operation mode, the dual-three-phase hybrid permanent magnet motor 110 operates independently with dual-three-phase windings. In the static charger mode, the neutral points of the motor's dual-ph...

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Abstract

The invention discloses a novel electric vehicle drive system of integrating charger functions. A motor driver and a charger share a power electronic conversion circuit between energy storage units, and also share a motor winding inductor, so that an electric vehicle motor driver and an on-board charger are organically integrated into a whole; and the limitation of an electric vehicle on the space weight is avoided. Double three-phase motors meet the low-voltage and high-current design requirements of electric vehicle motors, have relatively small torque ripples, meet the comfortable and smooth operating requirements of the electric vehicle, have relatively good fault tolerant capability and meet the high-reliability operating requirements of the electric vehicle. Permanent magnets NdFeB and AlNiCo are organically compounded on a rotor, so that the novel electric vehicle drive system has the advantage that the magnetic field of the permanent magnet AlNiCo is easy to adjust; the characteristic of high energy density of the permanent magnet NdFeB is reserved; the large starting torque and flux-weakening speed expansion operating requirements of the electric vehicle are met; the double three-phase windings can provide a torque current and a magnetization current respectively; and the magnetization efficiency is relatively high.

Description

technical field [0001] The invention relates to an electric vehicle drive system, in particular to a novel electric vehicle drive system integrating charger functions. Background technique [0002] With the increasing environmental problems caused by the oil energy crisis and carbon emissions and other harmful substances in automobile exhaust, electric vehicles, especially plug-in hybrid electric vehicles, have become an important direction and research hotspot for the development of the global automobile industry. The energy storage unit is the "energy heart" of electric vehicles. The performance of the energy storage unit not only depends on the energy storage module itself, but also is closely related to the charger. At present, chargers are mainly divided into two types: vehicle-mounted and charging stations. With the continuous increase in the requirements for the cruising range of electric vehicles, the energy storage capacity and charging capacity of electric vehicle...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02M3/335
CPCH02J7/00H02M3/335
Inventor 王政刘博辰张玥程明
Owner SOUTHEAST UNIV
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