DC exciting magnetic motor

Abstract

The DC exciting magnetic motor has rotor on the rotating shaft and with several sets of rotor magnetic poles in the same polarity, and stator connected to the seat and with several sets of stator magnetic poles in the same polarity. At least one kind of the stator magnetic poles and the rotor magnetic poles is exciting magnetic poles operating under the control of the control mechanism comprising electric brush, metal slip ring, synchronous switching metal piece. The central line of the rotor magnetic pole cross section and that of the stator magnetic pole cross section are in an angle of 0-45 deg, and in any time,, only one set of exciting magnetic poles inside the angle excites. The pair number of the stator magnetic poles is greater than that of the rotor magnetic poles, and the motor may change its rotation direction via altering the polarity of the power supply. The present invention has no commutator, simple structure, high efficiency, great torque and other features.

Description

technical field [0001] The invention relates to a DC motor, in particular to a DC excitation magnetic motor. Background technique [0002] As we all know, before the invention of three-phase AC motors, people have already started using DC motors. Although the invention of the three-phase AC motor has affected the use and development of the DC motor, the DC motor is different from the AC motor due to its outstanding advantages, such as smooth speed regulation and a wide range, large starting, braking and overload torque, and reliable High performance, still widely used in some electromechanical equipment with relatively high requirements, such as electric vehicles, excavators, rolling mills, textile machinery, large machine tools, etc. The existing DC motor is mainly composed of stator, rotor, stator magnetic pole, rotor magnetic pole, brush, commutator, armature, machine base and other components. The stator is connected to the machine base, the rotor is connected to the ar...

AI Technical Summary

Problems solved by technology

The existing DC motor is mainly composed of stator, rotor, stator magnetic pole, rotor magnetic pole, brush, commutator, armature, machine base and other components. The stator is connected to the machine base, the rotor is connected to the armature, and the magnetic pole can be a permanent magnetic pole. , can also be the excitation pole. When the motor is working, there must be two excitation poles at 180 degrees that are energized at the same time, and the direction of the generated magnetic field is opposite to generate torque. Therefore, there are complex structures, difficult commutation, difficulty in increasing power, and loss. A series of problems such as large size and low efficiency seriously restrict the development and application of DC motors

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