Reconstruction of an electric vehicle integrated charging system for open-winding permanent magnet motors with mode switches

Abstract

The invention relates to permanent magnet motor technology, and aims to provide an electric vehicle integrated charging system that uses a mode switch to reconfigure an open-winding permanent magnet motor. The main circuit of the charging system includes AC input power supply, permanent magnet motor of any phase, motor driver, DC side capacitor and storage battery; the permanent magnet motor of any phase is an open winding permanent magnet motor of any phase, and the two ends of the stator winding are opened and drawn out to the stator Outside the casing, the mode switch is respectively connected to the AC input power supply and the motor driver to jointly form a rectification circuit; the mode switch uses the winding of the open-winding permanent magnet motor as the inductance of the electric vehicle charging circuit to keep the motor rotor static during charging; The AC input power supply is a single-phase AC power input or a three-phase AC power input. The invention is based on the commonly used integrated charging system for electric vehicles, does not increase any hardware cost, has strong generality of the scheme, simple reconfiguration mode, and can effectively realize the static rotor of the motor during charging.

Description

Technical field[0001]The present invention relates to permanent magnet motor techniques, and more particularly to an electric vehicle integrated charging system that refutes the open winding permanent magnet motor in a mode switch, which belongs to the field of electrical technology.Background technique[0002]With the continuous improvement of productivity, social development has increasing demand for oil and coal and other fossil energy, thereby bringing problems such as environmental pollution and energy shortages. Electric cars have been widely concerned by researchers in various countries in the world, and its related drive systems and charging systems have also achieved rapid progress. At present, electric motor charging system is mainly divided into DC charging system and car AC charging system, DC charging system due to line and device restriction, high installation cost, low convenience; car exchange charging system is low, more beneficial to electric vehicles promotion and u...

AI Technical Summary

Problems solved by technology

However, because the winding reconfiguration methods proposed by various research schemes are complex and changeable, they need to be designed according to a specific occasion, but are no longer applicable based on another occasion, so the generality of the existing schemes is very poor.

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