CN207719916U - A kind of wide Medium-voltage Motor winding of wideband - Google Patents

Abstract

The utility model discloses a kind of wide Medium-voltage Motor windings of wideband of three-phase AC asynchronous motor technical field,Including U,V and W three-phase windings,The U,V and W three-phase windings are by N1,N2,Tri- sections of N3 is different, and the number of turns windings in series forms,The U phase windings head end,Centre tap,Tail end is labeled as U1 successively,U2,X1 and X2,For the power supply of 50HZ,Three phase mains is from head end U1,V1 and W1 accesses,For the supply frequency of 60HZ,Power supply is from tap U2,V2 and W2 accesses,There are three types of coupling methods according to supply voltage height for winding tail end,Motor can be allowed to realize 380V,The access of 430V and 480V power supplys,The motor can work normally,And rotating torque can be kept to be basically unchanged,Meet requirement of the manufacturing machine to power-equipment,Various criterion voltage and frequency in the world are adapted to simultaneously,It is a kind of wide Medium-voltage Motor of qualified wideband.

Description

A kind of wide Medium-voltage Motor winding of wideband

Technical field

The utility model is related to three-phase AC asynchronous motor technical field, specially a kind of wide Medium-voltage Motor winding of wideband.

Background technology

Asynchronous machine is the most popular power-equipment of each production field of national economy, the master of even more all kinds of engineering machinery Power and auxiliary power unit are wanted, with a large amount of outlets and the externally increase of undertaking quantities of China's engineering machinery, is often touched To engineering machinery necessary electromotor or electric product rated voltage and rated frequency and local power standard different problems, for referring to Motor can be manufactured and designed according to state's power standard by determining the exported product of country origin, and the big machinery of transnational operation is applied Work company, since Mechanical Equipment Matching motor is different from local power standard, certainly will bring construction machine in transnational undertaking business Inconvenience in tool use is substantially increased and is set although the use of frequency converter can solve the matching problem of voltage and frequency Standby cost and operation cost, stand-by motors numerous particularly with usage quantity and few the working time, more using frequency converter It is uneconomical, it is therefore desirable to a kind of alternating current generator to be produced, as long as the wiring of simple transformation once terminal box, it will be able to meet different volumes The requirement for determining frequency (50HZ, 60HZ), different rated voltages (380V, 430V, 480V), then export engineering machinery electro for simplifying Machine matches and solves the generalization of transnational construction company's construction equipment, has and greatly facilitates effect, for this purpose, I proposes a kind of width Bandwidth Medium-voltage Motor winding.

Utility model content

The purpose of this utility model is to provide a kind of wide Medium-voltage Motor windings of wideband, to solve to propose in above-mentioned background technology Current China's engineering machinery a large amount of outlets and externally accept the increases of quantities, through be commonly encountered engineering machinery necessary electromotor or Electric product rated voltage and rated frequency and local power standard different problems.

To achieve the above object, the utility model provides the following technical solutions：A kind of wide Medium-voltage Motor winding of wideband, including U, V and W three-phase windings, U, V and W three-phase windings are formed by the different the number of turns windings in series of tri- sections of N1, N2, N3, the U phases around Group head end, centre tap, tail end are labeled as U1, U2, X1 and X2 successively, and the V phase windings head end, centre tap, tail end is successively It is labeled as V1, V2, Y1 and Y2, the W phase windings head end, centre tap, tail end is labeled as W1, W2, Z1 and Z2 successively.

Preferably, tap X1, Y1 and Z1 short circuit, motor three-phase windings are connected into the connection of Y types, adapt to the power supply electricity of 380V Pressure.

Preferably, the tap X1 passes through lug plate and tap Z2 by lug plate and tap Y2 short circuits, the tap Y1 Short circuit, the tap Z1 are coupled by lug plate and tap X2 short circuits, the parts the winding N3 composition Δ of motor three-phase windings, then with Rest part windings in series, entire machine winding form the mixing connection of Y- Δs, adapt to the supply voltage of 430V.

Preferably, tap X2, Y2 and Z2 short circuit, motor three-phase windings couple at Y types, adapt to the power supply electricity of 480V Pressure.

Preferably, described tap U1, V1 and W1 access three phase mains, adapt to the supply frequency of 50HZ, tap U2, V2 Three phase mains is accessed with W2, adapts to the supply frequency of 60HZ.

Compared with prior art, the utility model has the beneficial effects that：The connection of position and winding is introduced by changing power supply Method is connect, with minimum binding post, realizes the matching of different frequency and voltage class, motor is made to be in normal work shape always State, the program are specially：For the power supply of 50HZ, three phase mains is accessed from head end U1, V1 and W1, for the power supply frequency of 60HZ Rate, three phase mains are accessed from tap U2, V2 and W2, and there are three types of coupling methods according to supply voltage height for winding, work as supply voltage For 380V when, if with lug plate by tap X1, Y1, Z1 short circuits, three-phase windings N2 composition Y types connections, winding N3 open circuits, wiring Principle is as shown in figure 3, when supply voltage is 430V, and winding connection is as shown in figure 5, with lug plate by tap X1-Y2, tap Y1-Z2, tap Z1-X2 short circuits, winding N3 are connected into Δ type, and making Y types with remaining winding couples, and machine winding is mixed at Y- Δs to be joined It connects, when supply voltage is 480V, as shown in fig. 7, by tap X2, Y2, Z2 short circuits form entire winding Y types and connect winding connection Method, because supply voltage allowable fluctuation range is ± 5%, 380V voltages cover the range of 360~400V, 430V electricity Pressure covers the range of 410~450V, and 480V voltages cover 455~510V ranges, therefore, field power supply voltage 360~ Between 510V, which can work normally, and rotating torque can be kept to be basically unchanged, and meet manufacturing machine to power The requirement of equipment, while various criterion voltage and frequency in the world are adapted to, it is a kind of wide Medium-voltage Motor of qualified wideband.

Description of the drawings

Fig. 1 is the utility model winding outlet elementary diagram；

Fig. 2 is the utility model binding post arrangement figure；

Fig. 3 is the utility model 380V elementary diagrams；

Fig. 4 is the utility model 380V binding posts arrangement figure；

Fig. 5 is the utility model 430V elementary diagrams；

Fig. 6 is the utility model 430V binding posts arrangement figure；

Fig. 7 is the utility model 480V elementary diagrams；

Fig. 8 is the utility model 480V binding posts arrangement figure.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

- 8 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of wide Medium-voltage Motor winding of wideband, including U, V and W three-phase windings, U, V and W three-phase windings are formed by tri- sections of different the number of turns windings in series of N1, N2, N3, the U phase windings Head end, centre tap, tail end are labeled as U1, U2, X1 and X2 successively, the V phase windings head end, centre tap, and tail end is marked successively Note is V1, V2, Y1 and Y2, and the W phase windings head end, centre tap, tail end is labeled as W1, W2, Z1 and Z2 successively.

Wherein, tap X1, Y1 and Z1 short circuit, motor three-phase windings are connected into the connection of Y types, adapt to the power supply electricity of 380V Pressure, the tap X1 pass through lug plate and tap Z2 short circuits, the tap by lug plate and tap Y2 short circuits, the tap Y1 Z1 is by lug plate and tap X2 short circuits, the parts the winding N3 composition Δ connection of motor three-phase windings, then with rest part winding Series connection, entire machine winding form the mixing connection of Y- Δs, adapt to the supply voltage of 430V, tap X2, Y2 and Z2 short circuit, electricity Machine three-phase windings couple at Y types, adapt to the supply voltage of 480V, and described tap U1, V1 and W1 access three phase mains, adapt to 50HZ Supply frequency, described tap U2, V2 and W2 access three phase mains, adapt to the supply frequency of 60HZ.

Operation principle：The program is with design of electrical motor basic theoretical formula：U=4.44fN Φ are foundation, regard Φ as constants, For different supply frequency and voltage class, the numerical value by changing N is matched, i.e. Φ=U/4.44fN=constants, this The minimum binding post of scheme, coordinates different winding coupling methods, realizes world wide low voltage motor supply frequency and electricity The matching of grade is pressed, specifically：Each phase winding of motor is divided into three sections by the design scheme, is referred to as winding N1, N2 and N3, N1=4 circles, N2=17 circles, N3=5 circles is taken to be drawn by four binding posts per phase winding, end to end to three-phase windings in the present embodiment It is respectively labeled as U1, U2, X1, X2, V1, V2, Y1, Y2, W1, W2, Z1, Z2 with centre tap, as shown in Figure 1, this 12 extractions Line arranges the power supply as shown in Fig. 2, for 50HZ in terminal box, and three phase mains is accessed from head end U1, V1 and W1, for The supply frequency of 60HZ, three phase mains are accessed from tap U2, V2 and W2, and there are three types of connection sides according to supply voltage height for winding Method, when supply voltage is 380V, as long as with lug plate by tap X1, Y1, Z1 short circuits, three-phase windings N2 composition Y types connections, around Group N3 open circuits, connection principle are as shown in Figure 3；When supply voltage is 430V, winding connection with lug plate as shown in figure 5, will be taken out Head X1-Y2, tap Y1-Z2, tap Z1-X2 short circuits, winding N3 is connected into Δ type, and making Y types with remaining winding couples, machine winding at The mixing connection of Y- Δs；When supply voltage is 480V, as shown in fig. 7, by tap X2, Y2, Z2 short circuits are formed entire winding connection Winding wye connection, because supply voltage allowable fluctuation range is ± 5%, 380V voltages cover the model of 360~400V It enclosing, 430V voltages cover the range of 410~450V, and 480V voltages cover 455~510V ranges, therefore, field power supply electricity It is pressed between 360~510V, which can work normally, and rotating torque can be kept to be basically unchanged, and meet production Requirement of the machinery to power-equipment, while various criterion voltage and frequency in the world are adapted to, it is that a kind of qualified wideband is wide Medium-voltage Motor.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of wide Medium-voltage Motor winding of wideband, including U, V and W three-phase windings, it is characterised in that：U, V and W three-phase windings are equal Formed by the different the number of turns windings in series of tri- sections of N1, N2, N3, the U phase windings head end, centre tap, tail end be labeled as successively U1, U2, X1 and X2, the V phase windings head end, centre tap, tail end are labeled as V1, V2, Y1 and Y2 successively, and the W phase windings are first End, centre tap, tail end are labeled as W1, W2, Z1 and Z2 successively.

2. the wide Medium-voltage Motor winding of a kind of wideband according to claim 1, it is characterised in that：Described tap X1, Y1 and Z1 are short It connects, motor three-phase windings are connected into the connection of Y types, adapt to the supply voltage of 380V.

3. the wide Medium-voltage Motor winding of a kind of wideband according to claim 1, it is characterised in that：The tap X1 passes through lug plate With tap Y2 short circuits, for the tap Y1 by lug plate and tap Z2 short circuits, the tap Z1 is short by lug plate and tap X2 Connect, the part the winding N3 composition Δ connection of motor three-phase windings, then with rest part windings in series, entire machine winding forms Y- Δ mixing connection, adapts to the supply voltage of 430V.

4. the wide Medium-voltage Motor winding of a kind of wideband according to claim 1, it is characterised in that：Described tap X2, Y2 and Z2 are short It connects, motor three-phase windings couple at Y types, adapt to the supply voltage of 480V.

5. the wide Medium-voltage Motor winding of a kind of wideband according to claim 1, it is characterised in that：Described tap U1, V1 and W1 connect Enter three phase mains, adapt to the supply frequency of 50HZ, described tap U2, V2 and W2 access three phase mains, adapt to the power supply frequency of 60HZ Rate.