Electric drive fault tolerant device, multiphase motor, power converter and electric device

Abstract

The invention provides an electric drive fault tolerant device with fault tolerating function, a multiphase motor, a power converter and an electric device. The electric drive fault tolerant device provided herein is used for driving the electric device and comprises a multiphase motor, a direct-current power source, a command transmitting portion, a current sensor, an output sensor, a battery management unit, a controller, a driver, and a power converter, and is characterized in that a winding of the multiphase motor includes j+i multiphase winding units, the direct-current power source has j+i battery units, the power converter has power conversion units in corresponding connection with the j+i multiphase winding units and the j+i battery units, each power conversion unit has k power conversion circuits which supply k linear currents to the corresponding multiphase winding units, the driver has j+i drive units in respective connection with the j+i power conversion units, k is a positive integer greater than 2, j is a positive integer greater than 1, and i is a natural redundant number.

Description

technical field [0001] The invention belongs to the field of motors, and in particular relates to an electric drive fault tolerance device with fault tolerance function, a multi-phase motor, a power converter 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. In order to better protect the environment, the state has issued various policies and vigorously promoted new energy and renewable energy. [0003] At present, using electric energy as the driving force of various equipment has become the mainstream of equipment development. Electric equipment such as electric vehicles and electric forklifts that use electricity as energy are increasingly favored by manufacturers and consumers. Electric equipment not only has less pollution and can provide electric energy through renewable energy, but a...

AI Technical Summary

Problems solved by technology

However, the increase in the number of phases increases the cost, difficulty and complexity of production because it is different from traditional design, manufacturing and control methods

When the relevant technology is not yet mature, it cannot be applied and popularized, which restricts and affects the development of high-power motors, electric drives and electric equipment, especially electric military equipment.

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