Dual-machine two-dimensional integrated three-phase asynchronous hub motor and frequency conversion driving control system

Abstract

The invention discloses a dual-machine two-dimensional integrated three-phase asynchronous hub motor and a frequency conversion driving control system. The motor consists of two three-phase asynchronous frequency conversion motors with the same structure; and two integrated modes and three operating modes are adopted by left and right sides of a rear-wheel dual machine and front and rear wheels of the dual machine respectively. The motor has excellent working environment adaptability and energy-saving efficiency and is combined with a frequency conversion driving controller so as to form a novel two-wheel electric vehicle electrically-driven system; and the motor and the system have the advantages of frequency conversion and energy conservation, regenerative brake energy conservation, replacement of motor reverse brake from mechanical friction brake, and the like.

Description

Technical field [0001] The invention relates to a two-wheel electric wheel hub motor and a drive system, in particular to a two-machine two-dimensional integrated three-phase asynchronous wheel hub motor and a variable frequency drive control system. Background technique [0002] The application of in-wheel motors in two-wheeled electric vehicles widely adopts permanent magnet DC and permanent magnet AC synchronous frequency conversion motors, while three-phase asynchronous frequency conversion motors have not yet been applied. Three-phase asynchronous motors have the following advantages: ①Small size and light weight; ②High starting torque multiple; ③Good controllability and high stability; ④Long life, less maintenance or even no maintenance; ⑤Simple manufacturing and low cost; ⑥Low noise and vibration, which can effectively improve comfort; A variable frequency drive controller can tow multiple motors, and can guarantee the same speed and reliable stability when cut in hal...

AI Technical Summary

Problems solved by technology

Its disadvantages are: 85%-88% functional conversion efficiency of three-phase asynchronous motor itself is 10% lower than that of 95%-98% permanent magnet motor. If combined with electronic frequency conversion technology, its working efficiency can surpass permanent magnet DC motor , close to the permanent magnet AC synchronous frequency conversion motor, coupled with two-dimensional integration of two machines, (electrical) regenerative braking and motor reverse braking integration, and vector and constant torque, constant power output control technology integration, constitute a new type of two-dimensional The electric drive system of two-wheeled electric vehicles has better comprehensive performance than the electric drive system currently used in two-wheeled electric vehicles.

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