Brushless direct-current variable frequency motor and control system using same

Abstract

The invention relates to the field of motors, and discloses a brushless direct-current variable frequency motor and a control system using the brushless direct-current variable frequency motor. The brushless direct-current variable frequency motor comprises a stator of an exciting winding and a rotor, and a trapezoid groove is formed in the inner surface of the rotor; a plurality of RbFeB magnets of the same nature are arranged inside the trapezoid groove; an iron core with an omega-shaped groove is arranged on the outer surface of the stator. The brushless direct-current variable frequency motor has the advantages of being large in power and saving energy. The control system using the brushless direct-current variable frequency motor comprises a microprocessor, a motor frequency converter, a display controller, an electronic differential, a vehicle speed setting and memory module, an electric vacuum pump braking power-assisting control system, an electric oil pump steering wheel power-assisting control system and a battery charger. When the control system using the brushless direct-current variable frequency motor is used by a motor vehicle, power is large, energy is saved, and environment is protected.

Description

technical field [0001] The invention relates to the field of gasoline-electric hybrid vehicles, in particular to a brushless DC variable frequency motor and a control system using the brushless DC variable frequency motor. Background technique [0002] In today's increasingly developed society, with the continuous innovation of means of transportation, in addition to buses and subways, more and more people have purchased their own private cars as a means of transportation for commuting and going out on holidays, especially in today's private cars. Nowadays, more and more affordable, it is sought after by people, no matter what age group they are. However, in this era when private cars are becoming more and more popular, the performance requirements for private cars are also getting higher and higher. Not only must they save fuel and fuel, but also exhaust as little exhaust gas as possible, and at the same time meet the power requirements of car owners. Most of the fuel priv...

AI Technical Summary

Problems solved by technology

However, since the permanent magnets pasted on the outer rotor are arranged in a single row along the inner surface of the outer rotor, the dynamic rate of the final brushless variable frequency motor cannot be made very large, currently only 800W

If you want to make a high-power brushless DC variable frequency motor, you must use many same-sex strong magnets to fix on the same pole surface. Due to the attraction of opposite-sex strong magnets on both sides of the circumference, or the same-sex repulsion in the direction of the cylinder The repulsion force cannot be pasted only by "universal glue", and it is very difficult in the pasting operation. At the same time, during the operation process, due to the attraction and repulsion, the magnet is prone to shift, which eventually leads to The motor appears eddy current during rotation or cannot achieve energy-saving effect

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