Motor rotation-clogging state protection method and device, and electronic equipment

Abstract

The invention provides a motor rotation-clogging state protection method and device, and electronic equipment. The protection method comprises steps that power limiting parameters of an electric driving system, and the rotating speed, the output torque and the current of the motor are collected in real time; the power limiting parameters at least comprise the temperature of an IGBT module, temperature difference of the IGBT module and the rotation-clogging depth of the motor; whether the motor enters a rotation-clogging state or not is determined according to the rotating speed, the output torque and the current of the motor; if yes, for each power limiting parameter of the electric driving system, a limit coefficient value corresponding to the current power limit parameters of the electric drive system is determined by using the pre-established corresponding relationship between the power limit parameters and the limit coefficient, a required torque value of the motor is corrected byusing the minimum limit coefficient value to obtain a target torque value, and the output torque of the motor is set as the target torque. The protection method is advantaged in that a problem that torque adjustment is not timely in a rotation-clogging protection method based on a single index in the prior art can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a method, device and electronic equipment for protecting a motor in a locked-rotor state. Background technique [0002] When the electric vehicle is running, if the tires of the whole vehicle lock up or climb a steep slope that exceeds the gradient of the vehicle, the drive motor of the electric vehicle will enter a stalled state. The motor is in a stalled state for a long time, which may easily cause damage to the motor body and the motor controller. For this reason, the motor controller is generally designed with a corresponding stall protection method to avoid damage to the motor body and the motor controller caused by the stall state. [0003] The existing stall protection method generally detects a certain operating index of the motor, judges whether the motor enters a stalled state according to the operating index, and further adjusts the output torque of the motor a...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a protection method, device and electronic equipment for a motor stall state, so as to solve the problem that the existing stall protection method based on a single index does not respond in time

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