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Motor drive control method and device, equipment and storage medium

A technology of motor drive control and motor drive, applied in control devices, electric vehicles, control drives, etc., can solve the problems of battery loss and low vehicle economy.

Active Publication Date: 2020-03-17
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a motor drive control method, device, equipment and storage medium, aiming to solve the technical problems of the prior art that the motor drive control is inaccurate, resulting in low economic efficiency of the vehicle and battery loss

Method used

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  • Motor drive control method and device, equipment and storage medium
  • Motor drive control method and device, equipment and storage medium
  • Motor drive control method and device, equipment and storage medium

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no. 1 example

[0074] Based on the above-mentioned first embodiment, the motor drive control method of this embodiment in the step S30 specifically includes:

[0075] Step S301: Obtain an inflection point in the rotational speed power curve, and use the inflection point as a detection operating point.

[0076] It should be noted that, according to the output power characteristic curve of the pure electric vehicle motor, as the motor speed increases, the target power will increase linearly, and maintain a basically constant power output when reaching the peak value. Therefore, the control of the target power by the vehicle controller basically coincides with the output power characteristic curve of the pure electric vehicle motor. When it is close to the peak speed of the motor, the target power can be reduced to prevent the motor speed from exceeding the target speed and exceeding the internal mechanical system of the motor. load limit. The vehicle controller generally controls the target p...

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Abstract

The invention belongs to the technical field of motor drive control, and discloses a motor drive control method and device, equipment and a storage medium. The motor drive control method comprises thesteps: receiving an accelerator pedal signal of a vehicle, and obtaining the corresponding relation between the motor rotating speed of the vehicle and target power under the accelerator pedal signal; generating a rotating speed power curve of the vehicle according to the corresponding relation between the motor rotating speed of the vehicle and the target power under the accelerator pedal signal; optimizing the rotating speed power curve to obtain an optimized rotating speed power curve; generating a target power mapping table according to the optimized rotating speed power curve; and performing motor driving according to the target power mapping table. By means of the mode, the target power mapping table can be directly used for a vehicle control unit driving motor and can also be applied to the motor driving advancing stage under the conditions of any accelerator opening degree and any motor rotating speed, and the technical problems that in the prior art, due to inaccurate motor driving control, the economy of a vehicle is not high, and battery losses are caused are solved.

Description

technical field [0001] The present invention relates to the technical field of motor drive, in particular to a motor drive control method, device, equipment and storage medium. Background technique [0002] For the drive control of pure electric vehicles, the vehicle controller generally outputs the target torque (or power) signal to the motor controller based on the collected accelerator pedal opening signal combined with the current motor speed, and the motor controller has a built-in power conversion module. By outputting PWM signals of different frequencies and duty ratios, the control chip outputs high-voltage alternating currents of different waveforms, so that the driving motor can reach the target torque (or power) working condition. The control of the output target power by the vehicle controller needs to comprehensively consider the pedal opening signal and the motor speed signal, and output different target power under different pedal opening and motor speed. [...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/10Y02T10/72
Inventor 黄秋生魏俞斌陈浩马磊尹孝源杨进
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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