Method of correcting electric angle of motor of new energy automobile

A new energy vehicle, electric angle technology, applied in the estimation/correction of motor parameters, etc., can solve the problems of increasing the calibration process and labor costs, and achieve the effects of high accuracy, reduced labor costs, and reduced human errors

Active Publication Date: 2019-02-01
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new energy vehicle motor electrical angle correction method to solve the problem that the correction of the motor electrical angle before the vehicle leaves the factory will increase the verification process and labor costs

Method used

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  • Method of correcting electric angle of motor of new energy automobile

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 Shown is a flow chart of a new energy vehicle motor electrical angle correction method of the present invention, including the following steps:

[0021] 1. After the vehicle is started, the motor controller is powered on to run, and all parameters are initialized. The initialization value of the motor electrical angle is the parameter given by the manufacturer. The set value △u of the bus voltage change rate of the super capacitor is the test calibration value, and the motor electrical angle The correction flag bit is initialized to 0, and the electrical angle correction flag bit of the motor is stored in EEPROM or other non-erasable memory upon power failure.

[0022] 2. After step 1 is completed, the motor controller enters the normal driving mode, accepts the vehicle ECU command, and waits for the condition to trigger to enter the ...

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Abstract

The invention relates to the field of motor control, and provides a method of correcting the electric angle of a motor of a new energy automobile, which automatically adjusts the electric angle of themotor according to the actual operation of the automobile and the bus voltage change condition when the automobile drives after leaving a factory, reduces the checking procedure of the electric angleof the motor before leaving the factory, reduces the manpower cost of the whole automobile factory, and realize quick correction speed, high accuracy and reduced manual errors.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a method for correcting the electrical angle of a new energy vehicle motor. Background technique [0002] The electrical angle of the motor usually refers to the difference between the electrical angle converted by the motor controller through the resolver (or photoelectric encoder) to read the initial mechanical angle of the rotor and the actual output A-phase voltage phase angle, due to the installation process of the motor manufacturer Due to the limitations of the motor design structure, it is impossible to keep the initial angle of the rotor consistent with the phase angle of the output A-phase voltage, so the manufacturer will mark this offset angle (hereinafter referred to as the electrical angle) to the motor controller in the form of motor parameters when the motor leaves the factory. Therefore, this parameter can be directly used to calculate related variables when writing ...

Claims

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Application Information

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IPC IPC(8): H02P23/14
CPCH02P23/14
Inventor 靳超张洪建纪秉男韩光辉张广利张春敏李雪莲
Owner ZHENGZHOU YUTONG BUS CO LTD
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