CN201466836U - Three-phase centralized winding type electric motor with redundant winding - Google Patents

Abstract

The utility model relates to a three-phase centralized winding type electric motor with redundant winding. In a centralized winding type electric motor of which the quantity of stator tooth sockets is an even number, and the ratio of the quantity of the stator tooth sockets and the quantity of rotor poles is 3 to 2, after the number of the winding on the tooth is defined in sequence starting from the winding of any tooth, the odd winding is divided into a group, the even winding is divided into another group, a three-phase drive controller is respectively used for controlling the odd winding and the even winding, two drive controllers can operate at the same time, and when one drive controller fails, the other one can work independently. The utility model has the advantages that the winding structure can enable the three-phase coil of the electric motor to be respectively positioned in the mechanical position away from 120 degrees, so as to keep balance of the driving force of the electric motor, and ensure the long-term stabile operation of the electric motor.

Description

Possesses winding type motor in the three-phase set of redundant winding

Technical field

The utility model relates to a kind of motor, winding type motor in particularly a kind of three-phase set that possesses redundant winding.

Background technology

Rotor is the brushless DC motor or the permanent magnet AC motor (abbreviating motor as) of permanent magnet, mainly is made of stator, rotor, bearing and casing etc.After stator generally becomes stator core by the silicon steel sheet closed assembly, be embedded in winding by the copper cash coiling in its core slots; Rotor generally is attached to the rotating shaft outside or is embedded in rotor core inside by magnet steel and constitutes.

The many forms with three phase windings of the winding of motor stator occur.Each phase winding can be divided into distributed winding and centralized winding dual mode again.Centralized winding with each coil on a tooth of stator core, three phase windings that connect and compose by coil again.The motor of centralized winding construction has all obtained extensive use in every field in recent years owing to have advantages such as volume is little, in light weight, the winding coil intersection is few.

In the high occasion of reliability requirement, often need three phase windings of motor are divided into two independently three phase windings, each independently three phase windings adopt a driving governor to control, two cover windings and driving governor can be worked simultaneously, when one group of winding and drive circuit inefficacy thereof, another set of winding and driving governor thereof can work on.But the above-mentioned motor that possesses two cover windings is when having only a cover winding job, and may there be the problem of equalising torque in the different winding methods of salary distribution, influences the steady operation of motor.

The utility model content

Technical problem of the present utility model is to provide a kind of actuating force to motor to keep balance, guarantees winding type motor in the three-phase set that possesses redundant winding of motor steady operation.

In order to solve above technical problem, the utility model provides winding type motor in a kind of three-phase set that possesses redundant winding, at stator teeth groove number is even number and stator teeth groove number and the ratio of rotor magnetic pole number is in 3: 2 the concentrated winding type motor, winding from any one tooth of stator, after defining the numbering of winding on the tooth successively, the winding of odd number is divided into a group, the winding of even number is divided into another group, odd number winding and even number winding are adopted a three-phase drive controller control respectively, two driving governors can be worked simultaneously, also can work independently when a driver breaks down.

Described concentrated winding type motor is a brush-less Dc motor, or permanent magnet AC motor.

This winding construction both had been applicable to inner-rotor type motor, also was applicable to external-rotor motor; Also be applicable to simultaneously switching magnetic-resistance formula motor.

Superior effect of the present utility model is: winding construction of the present utility model, because the motor three-phase coil is in respectively on the mechanical location of 120 degree,, can guarantee the motor long-term stable operation to the actuating force maintenance balance of motor.

Description of drawings

Fig. 1 is the winding construction schematic diagram of the utility model embodiment;

Fig. 2 is odd number winding or even number winding and drive circuit connection diagram.

The number in the figure explanation

The 1-stator core; The 2-rotor core;

21,22,23,24-rotor magnetic steel;

31,32,33,34,35,36-winding coil.

Embodiment

Concentrating the winding type brushless DC motor with 4 utmost points, 6 groove internal rotors is example, and the utility model will be further described.

As shown in Figure 1,31,32,33,34,35,36 is respectively winding coil, respectively according to certain number of turn on the tooth of stator core 1, according to illustrated method of attachment, each coil is interconnected, finally form A1, B1, C1 and A2, two group of three phase winding of B2, C2.With A1, B1, C1 is one group of three phase winding, is connected on the coherent signal of drive circuit shown in Figure 23, and A2, B2, C2 are organized three phase windings for another, is connected on the coherent signal of drive circuit shown in Figure 24.When motor drive circuit 3 or 4 independent energisings,,, can guarantee the motor long-term stable operation to the actuating force maintenance balance of motor because the motor three-phase coil is in respectively on the mechanical locations of 120 degree; When this motor drive circuit 3 or 4 is switched on simultaneously, can make motor produce bigger torque by suitable control and design.

Claims (2)

1. winding type motor in the three-phase set that possesses redundant winding is characterized in that:

At stator teeth groove number is even number and stator teeth groove number and the ratio of rotor magnetic pole number is in 3: 2 the concentrated winding type motor, winding from any one tooth of stator, after defining the numbering of winding on the tooth successively, the winding of odd number is divided into a group, the winding of even number is divided into another group, odd number winding and even number winding are adopted a three-phase drive controller control respectively, and two driving governors can be worked simultaneously, and a driver also can work independently.

2. by winding type motor in the described three-phase set that possesses redundant winding of claim 1, it is characterized in that:

Described concentrated winding type motor is a brush-less Dc motor, or permanent magnet AC motor.

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