Motor drive device and motor device

Abstract

The present invention provides a dual-structure motor drive device and a motor device. The motor drive device is arranged in the motor device and is configured to drive the motor device. The motor drive device comprises a polyphase machine, a direct current power source, a control portion, a drive portion and a power conversion portion. The control portion has a computing control unit and 2 outputends, the polyphase machine comprises two multi-phase winding units, each multi-phase winding unit comprises n multi-phase windings with mutually separated structures, the drive portion has 2 drive units, each drive unit comprises n drivers, the power conversion portion has 2 power conversion units, each power conversion unit comprises n power converters, each output end is connected with the n drivers, each driver is connected with the power converters, each power converters are connected with the multi-phase windings, and the computing control unit calculates and obtains two sets of switching control signals according to the instruction signals and outputs the two sets of switching control signal to the drive portion through the two output ends.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a dual-structure electric driving device and electric equipment. Background technique [0002] In today's society, the requirements for environmental protection are getting higher and higher, and the environmental protection standards of various equipment are also increasing. With the depletion of non-renewable energy such as petroleum, the development and application of green energy have been promoted. In order to better protect the environment and reduce dependence on oil resources, the state has issued various policies and vigorously promoted new energy and renewable energy. [0003] At present, using electric energy as the power of various equipment has become the mainstream of development. Electric equipment that uses electricity as energy, such as electric buses, electric cars, and electric forklifts, are increasingly favored by manufacturers and consumers. Electric equipment not o...

AI Technical Summary

Problems solved by technology

[0007] In a high-power high-performance electric drive device, the increase in the operating current and switching frequency of the power switch tube leads to an increase in the heat generation and temperature rise of the power switch tube, which affects the reliability and safety of the electric drive device.

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