Magnetic gear-based power-coupled composite motor and a control method thereof

Abstract

The invention discloses a magnetic gear-based power-coupled composite motor and a control method thereof. The composite motor successively comprises, from a side to the other side, a motor I, a magnetic gear I, a magnetic gear II and a motor II, wherein the output shaft of the motor I is connected to the inner rotor of the magnetic gear I; the output shaft of the motor II is connected to the inner rotor of the magnetic gear II; the outer rotor of the magnetic gear I is locked; the intermediate rotor of the magnetic gear I, while being connected to a PTO output shaft, is connected to the outer rotor of the magnetic gear II through a clutch I; the outer rotor of the magnetic gear II can be locked by a clutch II; and the intermediate rotor of the magnetic gear II is connected to a traction output shaft. The dual motors of the present invention can be coupled to each other to realize operation assistance, and can also perform respective operation separately. The composite motor overcomes a defect that each motor in a conventional dual-motor driving system can only perform its own driving task and enhances the system reliability.

Description

technical field [0001] The invention relates to a magnetic gear-based power coupling compound motor, which belongs to the technical field of high-end agricultural equipment manufacturing, and is especially proposed for an electric tractor and a magnetic gear power coupling compound motor used in a dual-motor drive system and a control method. Background technique [0002] Increasingly severe energy and environmental issues have prompted the development of transportation and agricultural equipment in an efficient, clean and sustainable direction. From the perspective of the development direction of new energy and the application of new technologies, agricultural equipment will gradually become electrified. Replacing traditional internal combustion tractors with electric tractors is one of the first choices to meet the requirements of environmentally friendly high-end agricultural equipment operations. [0003] On the other hand, the traditional transmission equipment system u...

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Problems solved by technology

[0004] In the research of electric tractors, especially electric tractors driven by dual motors, the drive mode in which two motors work independently is usually used at present, that is, one motor alone drives the output shaft of the power take-off (PTO), and the other motor It is responsible for driving the wheels, which is the so-called dual-motor independent drive method. This method has the advantages of simple structure, but there are also many problems. For example, when the electric tractor does not need the PTO output shaft to output power, only one drive motor in the system works. And the other motor does not work all the time, causing serious power waste

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