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Passive rectification protection system of electric vehicle motor controller

A motor controller, electric vehicle technology, applied in electric vehicles, control drive, power management and other directions, can solve the problem of motor controller being easily damaged, and achieve the effects of low cost, simple structure and improved service life

Active Publication Date: 2013-03-27
奇瑞新能源汽车股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a passive rectification protection system for an electric vehicle motor controller, which solves the problem that the motor controller of the existing electric vehicle motor controller is easily damaged when the vehicle is passively rectified, thereby improving the reliability of the motor controller sex

Method used

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  • Passive rectification protection system of electric vehicle motor controller

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Embodiment Construction

[0012] A passive rectification protection system for an electric vehicle motor controller, such as figure 1 Said, including a motor controller, the motor controller includes an IGBT power module with a high-speed diode inside, an IGBT protection circuit module, an IGBT drive module, and a DSP control module. The positive and negative poles of the bus bar are connected, and the signal of the IGBT power module is sent to the DSP control module through the IGBT protection circuit module. At the same time, the PWM signal output by the DSP control module is processed by the IGBT drive module and then transmitted to the IGBT power module. The IGBT protection circuit module will send commands at the same time The IGBT drive module is used to control the drive signal output of the IGBT protection circuit module; a current sensor and an electronic switch device are arranged in series on any two phases of the three-phase cable between the IGBT power module and the drive motor, and the cu...

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Abstract

The invention relates to a passive rectification protection system of an electric vehicle motor controller. The passive rectification protection system comprises a motor controller, wherein the motor controller comprises an IGBT (Insulated Gate Bipolar Transistor) power module which is internally provided with a high-speed diode, an IGBT protection circuit module, an IGBT drive module and a DSP (Digital Signal Processor) control module, a current sensor and an electronic switching device are arranged on any two phases in a three-phase cable between the IGBT power module and a drive motor in a serial connection way, the current sensor is used for transferring a current signal to the DSP control module, and meanwhile, the DSP control module outputs a level signal for controlling on-off of the electronic switching device. With the adoption of the passive rectification protection system, the problem that the traditional electric vehicle motor controller is easy to damage in the state of passive rectification of a whole vehicle is solved, thus improving the using reliability of the motor controller; and the passive rectification protection system can be widely applied to the field of the electric vehicle motor controllers.

Description

technical field [0001] The invention relates to a passive rectification protection system, in particular to a passive rectification protection system for an electric vehicle motor controller. Background technique [0002] With the rapid development of electric vehicles, the product performance and reliability requirements of its core components are becoming more and more important. As the control unit of the electric vehicle powertrain, the motor controller's product performance will directly affect the performance index of the vehicle. In electric vehicles, the motor controller is not only used as an inverter driven by the motor, but also as a rectifier for braking energy recovery. When used as a driver, the existing controller protection and IGBT protection methods are sufficient to ensure the safety of the motor controller. Reliable operation, but when used as a rectifier, the final measure of the existing protection scheme is to turn off the output of the IGBT power mod...

Claims

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Application Information

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IPC IPC(8): B60L15/00
CPCY02T10/7241Y02T10/72
Inventor 吴瑞林伟义杭孟荀袁文爽
Owner 奇瑞新能源汽车股份有限公司
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