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Safety motor drive system for new energy vehicle

A technology for motor drive systems and new energy vehicles, applied in control systems, motor control, electrical components, etc., can solve problems such as inappropriate full power backup and limited space, and achieve improved system reliability, small space, and strong fault tolerance Effect

Inactive Publication Date: 2019-04-05
南京煜茂兮电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the electric drive system of electric vehicles still needs to improve its reliability. After a failure, it is not possible to simply stop or lock it. At the same time, the space in the electric vehicle is limited, so it is not suitable to adopt full power backup

Method used

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  • Safety motor drive system for new energy vehicle

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Embodiment Construction

[0013] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] like figure 1 As shown, the present invention includes a motor, twelve power switch tubes, a power-on protection resistor, a power-on protection switch, two electrolytic capacitors, two bidirectional thyristors and a DC power supply, wherein:

[0015] The motor is composed of stator windings and rotor windings. The stator windings include ABC symmetrical windings and XYZ symmetrical windings. The difference between the ABC windings and XYZ windings is 30°. The neutral points O1 and O2 of the two sets of windings are independent, and the rotor windings are symmetrically distributed;

[0016] Twelve power switch tubes form two sets of three-phase full-bridge drive circuits, which are power switch tubes T1, T2, T3, T4, T5, T6 and T7, T8, T9, T10, T11, T12, and the ABC stator windings of the motor A three-phase full-bridge circuit composed...

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PUM

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Abstract

The invention discloses a safety motor drive system for a new energy vehicle. The system comprises a motor, twelve power switch tubes, a power-on protection resistor, a power-on protection switch, twoelectrolytic capacitors, two bidirectional thyristors and a DC power supply. The safety motor drive system has high reliability and strong fault tolerance, does not need for shutdown or locking whenan electric vehicle has faults, is small in the required space, can improve the system reliability without full power backup, does not need addition of hardware cost basically, can reduce the system harmonic loss, has a system power-on protection function, can achieve open-circuit and short-circuit fault tolerance of a system power switch tube and can perform open-circuit and short-circuit fault tolerance operation of the motor stator winding.

Description

technical field [0001] The invention relates to the field of electric drive systems for vehicles, in particular to a safe motor drive system for new energy vehicles. Background technique [0002] The large-scale development of new energy vehicles can effectively alleviate the pressure on my country's energy and environment, and is an important measure to promote technological innovation, transformation and upgrading of the automotive industry. Electric vehicles are an important part of new energy vehicles. With the support and promotion of national and local industrial policies and various research and development plans, my country's electric vehicle industry has developed rapidly, and the total number of electric vehicles has reached the forefront of the world. The electric drive system of electric vehicles is the heart of the whole vehicle system. It is mainly composed of drive motors, drive topology and control technology. They have emerged one after another, and even ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/028
CPCH02P29/028
Inventor 李洁蒋雪峰
Owner 南京煜茂兮电子科技有限公司