Structure-changeable motor system

Abstract

The invention relates to a structure-changeable motor system. The structure-changeable motor system comprises a main controller, a structure-changeable type driver and an independent winding motor; the main controller receives a control instruction and feedback information of the permanent magnet independent winding motor and generates power drive and drive topologic structure change instructions; the structure-changeable type driver changes a drive topologic structure based on the drive topologic structure change instruction; the structure-changeable type driver changes the winding drive mode of the independent winding motor into N star-shaped structures or independent H-bridge structures; when the independent H-bridge structures are adopted, multiple windings of the motor are connected in series; and the structure-changeable type driver drives the independent winding motor based on the power drive instruction. The structure-changeable motor system can satisfy different working condition demands; and compared with a structure comprising multiple motors and a clutch, the structure-changeable motor system can reduce weight and volume of a motor drive system efficiently, can increase power density efficiently and can remove mechanical noise.

Description

technical field [0001] The invention relates to a variable structure motor system, which belongs to the field of motors. Background technique [0002] With the development of high-power-density magnets and power devices, the application of motor systems, especially permanent magnet motor systems, continues to expand, such as the development of all-electric vehicles, all-electric tanks, and all-electric ships. The working conditions of key power mechanisms and propulsion power sources are often complex and often changeable, such as high speed, low speed, light load, overload, normal and fault conditions. [0003] In the prior art, in order to make the motor system meet the requirements of different driving conditions, a structure of two motors + clutches is usually used, such as a high-speed motor + a low-speed motor through a clutch, and the corresponding motors are switched to work according to different working conditions. Although this structure can improve the requireme...

AI Technical Summary

Problems solved by technology

Although this structure can improve the requirements of different working conditions, because the two motors do not work at the same time, and the clutch is very large in size and weight in order to meet various working conditions, the power density of the system is very low, and due to the existence of the clutch , which makes the system less efficient, and also produces greater mechanical vibration and noise

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