Dual-stator motor drive system

Abstract

The invention discloses a dual-stator motor drive system, wherein a first winding (10) is wound in the stator groove (12) of a left stator (1), while a second winding (11) is wound in the stator groove (14) of a right stator (2); the left stator (1) is electrically isolated from the right stator (2), while the first winding (10) is electrically isolated from the second winding (11); a first power source (4) and a second power source (5) are coupled to an alternating current and direct current conversion module (8), respectively; a drive circuit (7) is coupled to the alternating current and direct current conversion module (8); the alternating current and direct current conversion module (8) is coupled to the wire outlet ends of the first winding (10) and the second winding (11) of an alternating-current motor (3); a logical algorithm circuit (6) is coupled to the drive circuit (7); and a control module (9) is coupled to the logical algorithm circuit (6). Aiming at the defect of the traditional motor drive system, a dual-motor drive system capable of improving the system energy utilization efficiency and also capable of effectively handling motor faults is designed.

Description

technical field [0001] The invention relates to the technical field of motors and their control, in particular to a dual-stator motor drive system powered by dual power sources. Background technique [0002] At present, with the continuous development of hybrid electric vehicles and pure electric vehicles, there are higher requirements for the working performance, working mode and energy-saving effect of the driving system of the vehicle under different road conditions. The traditional three-phase AC motor cannot realize the conversion between multiple working schemes when facing different road conditions and the driving system is in different driving states, nor can it adopt the corresponding driving scheme according to the actual power demand of the driving system to save energy. And in the failure mode such as the lack of phase of the drive system, the winding current of the three-phase motor rises sharply, and the vibration and noise increase, which affects the operating...

AI Technical Summary

Problems solved by technology

The traditional three-phase AC motor cannot realize the conversion between multiple working schemes when facing different road conditions and the driving system is in different driving states, nor can it adopt the corresponding driving scheme according to the actual power demand of the driving system to save energy

And in the failure mode such as the lack of phase of the drive system, the winding current of the three-phase motor rises sharply, and the vibration and noise increase, which affects the operating performance and life of the system, and even endangers driving safety. The reliability is poor

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