Rotor and electro-magnetic synchronous motor
A synchronous motor, electric excitation technology, applied in the direction of electric components, electromechanical devices, electrical components, etc., can solve the problem of large influence of the motor
Pending Publication Date: 2022-05-10
HUAWEI DIGITAL POWER TECH CO LTD
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AI Technical Summary
Problems solved by technology
[0003] This application provides a rotor and electric excitation synchronous motor, which is used to solve the problem that the armature reaction has a great influence on the motor
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[0059] In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0060] At present, electric excitation synchronous motors have received great attention in the field of electric vehicles, because electric excitation synchronous motors do not contain permanent magnets, the manufacturing cost is low, and the field can be demagnetized when the motor has a short-circuit fault, so the safety factor is high. During the working process of electric vehicles, there will be working conditions such as acceleration and climbing that require a large torque. Therefore, when the electric excitation synchronous motor is used as the driving motor for electric vehicles, it needs to be operated with a large overload, which will cause electric shock in the electric excitation synchronous motor. Pivot reaction, that is, the armature magnetic field wil...
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The invention relates to a rotor and an electro-magnetic synchronous motor. The rotor is applied to an excitation synchronous motor. The rotor comprises a first main body part, connecting parts, second main body parts and coils, the connecting parts are arranged in the circumferential direction of the first main body part, the second main body parts are located at the ends, away from the first main body part, of the connecting parts, and the coils are wound around the outer surfaces of the connecting parts in the circumferential direction of the connecting parts. The second main body part is provided with a through hole penetrating along the thickness direction of the rotor. Current is introduced into the coil to generate a main magnetic field in the excitation synchronous motor, an armature magnetic field is generated after current is introduced into the armature winding, the armature magnetic field enables magnetic induction lines of the main magnetic field to deflect to form an armature reaction, and the larger the output torque of the excitation synchronous motor is, the larger the influence of the armature reaction is. The second main body part is provided with the through hole, so that the magnetic resistance of the through hole along the tangential direction of the rotor can be increased, the deflection of magnetic lines at the through hole is reduced, the influence of armature reaction on the excitation synchronous motor is reduced, and the output torque of the excitation synchronous motor is improved.
Description
technical field [0001] The present application relates to the field of motor technology, in particular to a rotor and an electrically excited synchronous motor. Background technique [0002] In the electric excitation motor in the prior art, when there is no current passing through the armature winding, the main magnetic field formed by the magnetic poles is distributed according to an approximately sinusoidal law, and the armature magnetic field will be generated after the direct current is passed into the rotor winding, and the armature magnetic field will have an impact on the main magnetic field. The influence of the magnetic field distorts the main magnetic field and produces an armature reaction. The greater the load, the stronger the magnetic field distortion caused by the armature reaction, which will destroy the normal commutation of the armature winding components, easily cause sparks, and deteriorate the working conditions of the motor. Contents of the invention...
Claims
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IPC IPC(8): H02K1/24H02K1/30H02K3/52
CPCH02K1/24H02K1/30H02K3/527
Inventor 蔺梦轩兰华陈金华
Owner HUAWEI DIGITAL POWER TECH CO LTD