CN204103635U

CN204103635U - The concentrated winding stator of servomotor

Info

Publication number: CN204103635U
Application number: CN201420453093.9U
Authority: CN
Inventors: 叶国定
Original assignee: CHANGZHOU WUJIN JINBAO MOTOR Co Ltd
Current assignee: CHANGZHOU WUJIN JINBAO MOTOR Co Ltd
Priority date: 2014-08-12
Filing date: 2014-08-12
Publication date: 2015-01-14
Anticipated expiration: 2024-08-12

Abstract

The utility model relates to technical field of motors, particularly a kind of concentrated winding stator of servomotor, the winding of each phase of three-phase windings is divided into two or more winding element, adopt the positive terminal of winding element directly to be connected with corresponding phase line by lead-in wire between winding element, the negative pole end of winding element is connected in parallel by the mode be connected with common port that goes between.The beneficial effects of the utility model are: the coil turn of monodentate can increase to the multiple of winding element, therefore the single enamelled wire less than conventional serial wiring diameter can be adopted to carry out winding technique, thus can by enamelled wire arrange very neat, improve the copper factor of motor, also because enamelled wire diameter is little, and the coiling difficulty of winding is reduced.Simultaneously, the positive terminal of winding element is directly connected with corresponding phase line by lead-in wire, and the electric current flowing through lead-in wire reduces, and can reduce the diameter gone between, reduce the heating gone between, reach the object of the connection of convenient lead-in wire the coil connection reliability of raising lead-in wire and winding.

Description

The concentrated winding stator of servomotor

Technical field

The utility model relates to technical field of motors, particularly a kind of concentrated winding stator of servomotor.

Background technology

Three-phase permanent AC servo motor is that latter stage year in last century 70 is along with integrated circuit, a kind of New-type electric machine that power electronic technology and the development exchanging variable speed drive technology get up, this type of motor is little with electro mechanic time constant, the linearity is high, starting resistor is low, characteristics such as detent torque is large and being widely used, what servomotor in earlier stage adopted substantially is the design that fractional slot winding carries out stator, the rule efficiency of motor stator is lower, due to the existence of cross-slot, end, the two ends copper consumption of rule is larger, the copper factor of motor is not high, there is the larger problem of copper loss in motor, because the low i.e. enamelled wire current density used of copper factor selects the low and problem of motor overload scarce capacity that is that cause, along with the development of industrial technology, require more and more higher to the power density under servomotor unit volume and overload capacity, and this generic request will be met, just require that the volume of motor is little, the enamelled wire diameter that stator adopts needs larger, and adopts concentrated groove winding, and the structure of assembled piece type stator can cancel the end sections of winding, and adopt assembled piece type stator to be carry out stator pack dress after point groove coiling and coiling complete, the copper factor of motor can be improved greatly, in order to meet the requirement of motor high dynamic performance, the existing motor that takes is the coil winding carrying out monodentate after calculating by pole span substantially, and forms single-phase winding after being connected by the winding of single-phase contained per tooth.

The concentrated winding stator of 12 groove 10 pole motors as shown in Figure 1, traditional way is the coil turn of monodentate is N, by the 1st groove just around, be concatenated into the 2nd groove back-roll, be concatenated into again the 7th groove back-roll, be finally concatenated into the 8th groove just around coil, form the winding of a phase, then carry out the winding technique of second-phase and third phase with the mechanical degree position differing 120 degree respectively, complete the winding work of winding.Because the coil turn of the every phase winding of this motor is less, as adopted single enamelled wire to carry out winding, the diameter of enamelled wire is comparatively large, processing difficulties; And adopt many lines and around mode carry out coiling time, due to enamelled wire radical more, many windings fitly cannot be arranged man-hour adding, therefore have impact on the raising of copper factor.

Utility model content

Technical problem to be solved in the utility model is: adopt many lines and around mode carry out coiling time, due to enamelled wire radical more, many windings fitly cannot be arranged man-hour adding, therefore have impact on the raising of copper factor.

The utility model solves the technical scheme that its technical problem adopts: a kind of concentrated winding stator of servomotor, comprise the three-phase windings on stator and stator, each phase winding is divided into two or more winding element, coil quantity in each winding element is identical, and the coil in each winding element is connected in series by lead-in wire each other, adopt the positive terminal of winding element directly to be connected with corresponding phase line by lead-in wire between winding element, the negative pole end of winding element is connected in parallel by the mode be connected with common port that goes between.

Further restriction, stator is assembled stator, and the coil of winding, around the skeleton of the stator core unit of assembled stator, for convenience of the connection between coil, skeleton has for the binding post be connected with coil that goes between.

The beneficial effects of the utility model are: because connected by parallel way between the winding element of three-phase windings, the number of turn of the coil of monodentate can increase to the multiple of winding element, therefore the single enamelled wire of more minor diameter can be adopted to carry out winding technique, thus can by enamelled wire arrange very neat, improve the copper factor of motor, also because enamelled wire diameter is little, and reduce the coiling difficulty of winding, enhance productivity.

Simultaneously, the positive terminal of winding element is directly connected with corresponding phase line by lead-in wire, and the electric current flowing through lead-in wire reduces, and can reduce the diameter gone between, reduce the heating gone between, reach the object of the connection of convenient lead-in wire the coil connection reliability of raising lead-in wire and winding.

Accompanying drawing explanation

Below in conjunction with drawings and embodiments, the utility model is further illustrated.

Fig. 1 is the winding construction schematic diagram of traditional winding mode;

Fig. 2 is winding construction schematic diagram of the present utility model;

In figure: 1. winding element.

Embodiment

As shown in Figure 1, a kind of concentrated winding stator of servomotor, comprise the three-phase windings on stator and stator, each phase winding is divided into two or more winding element 1, coil quantity in each winding element 1 is identical, and the coil in each winding element 1 is connected in series by lead-in wire each other, adopt the positive terminal of winding element 1 directly to be connected with corresponding phase line by lead-in wire between winding element 1, the negative pole end of winding element 1 is connected in parallel by the mode be connected with common port that goes between.

Stator is assembled stator, stator core is spliced by the piece of several monodentates, monodentate is I-shaped structure, form the coil of winding respectively around the skeleton of the monodentate of the stator core of assembled stator, for convenience of the connection between coil, skeleton has for the binding post be connected with coil that goes between.

As shown in Figure 2, the concentrated winding stator of 12 groove 10 pole motors is example:

By a wherein phase of original winding winding be divided into two independently winding elements 1, the coil of this phase winding is respectively around 1, 2, 7, on 8 grooves, when the number of turn of the coil on monodentate is conventional winding mode, the number of turn of coil is multiplied by Segmentation Number (quantity of winding element 1), the coil turn of monodentate is 2N, the number of turn of coil when N is conventional winding mode, by the 1st groove just around, the mode of the 2nd groove back-roll forms 1/2 winding element of first-phase winding, then by the 7th groove back-roll, be concatenated into the 8th groove just around mode form other 1/2 winding element of first-phase winding, these two winding elements 1 are carried out parallel connection, but the coil turn due to monodentate increases to the multiple of Segmentation Number, therefore the single enamelled wire of the enamelled wire more minor diameter than conventional serial wiring can be adopted to carry out winding technique, what enamelled wire can be arranged is very neat, thus the copper factor of motor can be mentioned, also because enamelled wire diameter is little, and reduce the coiling difficulty of winding, enhance productivity.

Such as, a motor by traditional winding mode to be diameter be 1.27 single coiling, the coil turn of monodentate is 38 circles, and because wire diameter is comparatively thick, coiling is comparatively difficult, and between line, aligned gaps is larger; Carry out coiling by scheme of the present utility model, the coiling specification of monodentate can be changed to the line that diameter is 0.9, the number of turn of coiling is adjusted to 76 circles, due to the reduction of wire diameter, relatively easy during coiling, and between line, gap reduces, and copper factor can a nearly step improve.Production efficiency and consistency can further improve.Solve thick line to be difficult to process and parallel winding of multiple coils cannot the problem of proper alignment.

If a motor is by traditional winding mode, the electric current of the lead-in wire between the coil of single-phase winding is I, and after adopting scheme of the present utility model, the electric current of lead-in wire is 1/2I, can reduce the diameter gone between, the convenient connection gone between is the reliability be connected with the coil of winding and raising goes between.

Claims

1. the concentrated winding stator of a servomotor, comprise the three-phase windings on stator and stator, it is characterized in that: each phase winding is divided into two or more winding element (1), coil quantity in each winding element (1) is identical, and the coil in each winding element (1) is connected in series by lead-in wire each other, adopt the positive terminal of winding element (1) directly to be connected with corresponding phase line by lead-in wire between winding element (1), the negative pole end of winding element (1) is connected in parallel by the mode be connected with common port that goes between.

2. the concentrated winding stator of servomotor according to claim 1, it is characterized in that: described stator is assembled stator, the coil of winding, around the skeleton of the stator core unit of assembled stator, skeleton has for the binding post be connected with coil that goes between.