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A motor controller

A motor controller and control signal technology, applied in the direction of motor control, AC motor control, electronic commutation motor control, etc., can solve the problem of high difficulty in device design

Active Publication Date: 2020-07-07
合肥阳光电动力科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a motor controller to solve the problem of high difficulty in device design in the prior art

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Embodiment Construction

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0053] The invention provides a motor controller to solve the problem of high difficulty in device design in the prior art.

[0054] see figure 1 , the motor controller includes: the main circuit (including figure 1The upper tubes S1, S3, S5 shown in, the lower tubes S2, S4, S6, the DC bus capacitor C), the speed acquisition module 101, the microprocessor 102, the monitoring chip 104, the first logic operation module 103, the second logic Operation module 105, drive circuit 106 and overvo...

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Abstract

The invention provides a motor controller, which obtains the speed judgment signal of the motor through a microprocessor combined with a speed acquisition module, and then uses the first logic operation module to output the first control signal according to the speed of the motor speed, and then makes the drive circuit pass the pulse width Modulate and control the main circuit to work normally or enter the corresponding safe state; and also generate and output the second shut-off signal according to the working state of the microprocessor or output instructions through the monitoring chip, and then the second logic operation module according to the second shut-off signal Whether the signal is off and the DC bus voltage of the main circuit is overvoltage, the second control signal is output, so that the drive circuit controls the main circuit to stop accepting pulse width modulation and enter a corresponding safe state; that is, the application designs two independent The shutdown path enables the safety level decomposition of the two shutdown paths, which reduces the safety level requirements for each shutdown path, thereby reducing the design difficulty of the device.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a motor controller. Background technique [0002] The main function of the motor controller in pure electric and hybrid vehicles is to convert the DC power provided by the high-voltage battery into the three-phase AC power required by the motor, drive the motor under the control of the vehicle controller, and provide driving or braking power for the vehicle. moment. [0003] At present, domestic OEMs have begun to put forward functional safety requirements for motor controllers used in pure electric or hybrid passenger vehicles. It is generally required that motor controllers with functional safety need to pass the shutdown when a fault that violates the safety goal is detected. The broken path enters a safe state, thereby avoiding danger to the driver and passengers. The safe state of the motor controller generally means that the output torque of the motor controlled by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P25/16
CPCH02P25/16B60L3/0061B60L3/08B60L15/12B60L2240/421B60L2240/427Y02T10/64H02P6/17H02P29/0241H02P6/085H02P6/12
Inventor 陈文杰杜恩利于安博杨晗
Owner 合肥阳光电动力科技有限公司
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