An Open Winding Variable Structure Motor System

Abstract

The invention relates to an open winding variable-structure motor system, which comprises a master controller, a variable-structure driver and an open winding motor, wherein the open winding motor comprises N groups of windings; each group of windings comprise a first winding and a second winding; N is greater than or equal to 2; the master controller receives a control instruction and feedback information of the open winding motor, and generates a power drive instruction and a drive topology variable-structure instruction; and the variable structure driver converts a drive topology structure according to the drive topology variable-structure instruction, can connect each group of two windings of the open winding motor into a new one-phase winding in series, and can also be converted into a light load mode or a heavy load mode. The open winding variable-structure motor system fully utilizes the advantages of variable structures, high power density and high reliability of the variable-structure driver and a multi-phase open winding motor, can meet different work condition requirements, can effectively reduce the weight and the volume of a motor drive system, effectively improves the power density and the reliability and eliminates mechanical noise.

Description

technical field [0001] The invention relates to an open winding 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 open winding motors (permanent magnet independent winding motors), continues to expand, such as the development of all-electric vehicles, all-electric tanks, all-electric ships, etc. , as the key power mechanism and propulsion power source of the above-mentioned system, the motor system has complex and often changeable working conditions, 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, multiple motors are usually coupled through a force or speed synthesizer, such as a high-speed motor + a low-speed motor through a clutch, and the corresponding ones are ...

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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