Ramp slow sliding control method for switched reluctance motor of electric vehicle

Abstract

The invention relates to a ramp slow sliding control method for a switched reluctance motor of an electric vehicle, which is designed based on the unique operation control characteristic of the switched reluctance motor, judges whether the electric vehicle enters an anti-slip mode according to a position sensor signal and a handlebar voltage, realizes the automatic identification of a slip state,and enters the anti-slip mode. The slope sliding distance of the electric vehicle can be shortened, the safety and reliability of an electric vehicle system are improved, the switched reluctance motoroperates in a power generation state due to the slope sliding prevention mode, braking energy can be fed back to a capacitor and a battery, the endurance of the electric vehicle can be effectively improved, and the effective service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a method for controlling slow sliding of a switched reluctance motor of an electric vehicle, and belongs to the technical field of drive control of electric vehicles. Background technique [0002] The increasingly serious energy problem forces the automotive industry to look for new vehicle energy solutions. Electric energy, as a clean and non-polluting energy source, has attracted extensive attention from the automotive industry. Switched reluctance motors were developed in the early 1980s. A new type of speed regulating motor has the characteristics of simple structure, good fault tolerance, and high efficiency. It has become a new generation of stepless speed regulating system after frequency conversion speed regulating system and brushless DC motor speed regulating system. Applications and aerospace and other fields successfully applied. With the shortage of energy and the reduction of rare earth resources, it has graduall...

AI Technical Summary

Problems solved by technology

[0003] The existing anti-slope control method generally consists of two types: one is to install an angle sensor on the controller, use the angle sensor to detect the current slope angle, and calculate the anti-slope control stable current according to the slope angle; the other is to use PID Speed ​​closed-loop control, since the controlled object is a large inertia system, it is difficult to achieve a good balance in response speed and overshoot by using PID control, so that the slope distance cannot be shortened well

In practical applications, the first method needs to pay additional device costs, and the second method needs to adjust PID parameters, which makes debugging complicated

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