CN206932086U

CN206932086U - Multi-tap winding wide speed-regulation permanent-magnet synchronous motor

Info

Publication number: CN206932086U
Application number: CN201720549312.7U
Authority: CN
Inventors: 于涛
Original assignee: Beijing Jiayu Hong Wah Technology Co Ltd
Current assignee: Beijing Jiayu Hong Wah Technology Co Ltd
Priority date: 2017-05-17
Filing date: 2017-05-17
Publication date: 2018-01-26
Anticipated expiration: 2027-05-17

Abstract

The utility model discloses a kind of multi-tap winding wide speed-regulation permanent-magnet synchronous motor, including stator winding, the stator winding is on the stator tooth, the stator winding includes the phase electric winding being in series by least two coils, the phase electric winding sets three, three phase electric winding triangles connect or Y-connection, and at least one switch is parallel with the series coil of the phase electric winding；Wide range speed control can be achieved with using primary coil, be not required to increase new winding and mechanical device, electric machine structure is simple, and cost is low；During low speed, each phase electric winding has more coil turn, guarantee has sufficiently large output torque, with the raising of rotating speed, the closing of controlling switch can be passed through, the coil turn of each phase electric winding is reduced, now caused back-emf also reduces permanent magnetic field therewith in the windings, so that the motor invariable power range of speeds increases.

Description

Multi-tap winding wide speed-regulation permanent-magnet synchronous motor

Technical field

Permagnetic synchronous motor technical field is the utility model is related to, more particularly to a kind of multi-tap winding wide range speed control permanent magnetism is same Walk motor.

Background technology

The permagnetic synchronous motor of the industries such as electric automobile, both required that motor had stronger torque output capability, to meet car Starting, the power needed for operating mode such as accelerate, slow down, having wider speed adjustable range again, to adapt to electric automobile high-performance cruise Demand.The back-emf of permagnetic synchronous motor increases with the increase of rotating speed, until reaching the pole that inverter is capable of output voltage Limit.Now if do not adjusted to control method, rotating speed will be unable to continue to raise.In order to larger more than rated speed In the range of run, weak magnetic control often is carried out to motor, weakens rotor field and brings the lifting of speed.In recent years, it is both domestic and external to be permitted More research institutions and scholar have done substantial amounts of research work for the weak magnetic control of permagnetic synchronous motor, different control strategies and Improved method is proposed in succession, and is applied in Practical Project.But weak magnetism speed expansion is relatively applied to interior permanent magnet machines, Er Qiekuo The problems such as speed is limited in scope, while can also bring copper wastage to increase, and efficiency reduces.

In addition, there are some to switch or install additional the method for mechanical device change magnetic field size using double winding to realize electricity The wide range speed control operation of machine, but such method increase cost, operating difficulties, actual application value are little.

Utility model content

The technical problems to be solved in the utility model, which is to provide one kind, need not increase winding and plant equipment, both simplify Electric machine structure, the cost of motor is reduced, the multi-tap winding wide speed-regulation permanent-magnet synchronous motor of extra copper loss need not be increased again.

In order to solve the above-mentioned technical problem, the technical solution of the utility model is：Multi-tap winding wide range speed control permanent-magnet synchronous Motor, including stator winding, on the stator tooth, the stator winding is included by least two coils the stator winding The phase electric winding being in series, the phase electric winding set three, and three phase electric winding triangles connect or Y-connection, At least one switch is parallel with the series coil of the phase electric winding.

Further, the phase electric winding is in series by three coils.

Further, the switch in parallel one, the input connection of the switch in parallel in the phase electric winding On the intermediate coil of the coil of three series connection, the output end of the switch is connected to the output end of the coil of three series connection.

Further, the switch in parallel two, the input of two switches in parallel in the phase electric winding It is connected to the output end with first coil on the intermediate coil of the coil of three series connection, the output end connection of the switch In the output end of the coil of three series connection.

Further, the stator winding is arranged on the interior permanent magnet machines or surface-mounted permanent magnet machine.

Had the beneficial effect that using what above-mentioned technical proposal the utility model obtained：1. wide tune can be achieved with using primary coil Speed, it is not required to increase new winding and mechanical device, electric machine structure is simple, and cost is low；2. during low speed, each phase electric winding has more Coil turn, guarantee has sufficiently large output torque, can be by the closing of controlling switch with the raising of rotating speed, will be each The coil turn of phase electric winding is reduced, and now caused back-emf also reduces permanent magnetic field therewith in the windings, so that motor The invariable power range of speeds increases；After the coil turn of each phase electric winding is reduced, resistance and inductance are reduced therewith, and dynamic response is more It hurry up, copper loss is reduced, more efficient；3. it is applied widely, interior permanent magnet machines are not only suitable for, are applied to durface mounted permanent magnet electricity again Machine；4. speed adjustable range is wide, tap number and position can be arranged as required to.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of structural representation of embodiment of the present utility model；

Fig. 2 is the structural representation of the utility model another kind embodiment；

Fig. 3 is the elementary diagram of the groove motor of 8 pole 9；

Fig. 4 is existing machine winding wiring schematic diagram.

Embodiment

Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.Herein it should be noted that It is used to help understand the utility model for the explanation of these embodiments, but does not form to restriction of the present utility model.This Outside, as long as technical characteristic involved in each embodiment of the utility model disclosed below does not form conflict each other Can is mutually combined.

The utility model is further described with reference to accompanying drawing, person of ordinary skill in the field is preferably implemented this reality With new, the utility model embodiment multi-tap winding wide speed-regulation permanent-magnet synchronous motor, including stator winding, the stator winding On the stator tooth, the stator winding includes the phase electric winding that is in series by least two coils, the phase electricity around Group sets three, and three phase electric winding triangles connect or Y-connection, in parallel on the series coil of the phase electric winding There is at least one switch.

Phase electric winding described in the utility model embodiment is in series by three coils；The switch in parallel one, it is described In phase electric winding the input of the switch in parallel be connected to three series connection coil intermediate coil on, the switch it is defeated Go out to hold the output end for the coil for being connected to three series connection, switch in parallel two described in another embodiment, in the phase electric winding simultaneously The input of two switches of connection be connected on the intermediate coil of the coil of three series connection and first coil it is defeated Go out end, the output end of the switch is connected to the output end of the coil of three series connection.

Stator winding described in the utility model embodiment is arranged on the interior permanent magnet machines or surface-mounted permanent magnet machine.

With reference to accompanying drawing 3 and Fig. 4 by taking the groove Y type motors of 8 pole 9 as an example, Fig. 3 is corresponding connection principle, from fig. 4, it can be seen that per phase Winding has that three groups of coils are in series, and conventional design is that three-phase windings draw tri- the end of a thread of A, B, C, the other three the end of a thread A ', B ', C ' connect and compose star point.

The utility model winding connection schematic diagram is as shown in Figure 1 and Figure 2.Phase electric winding is no longer only that A, B, C tri- takes out Head, tap number can depend on the needs, Fig. 4 be two level tap three-phase windings wiring schematic diagram.A phase windings are by three groups of coils It is in series, A1 and A ' are one-level tap, and A2 and A ' are two level tap, tap when A2 is the intermediate coil half number of turn, and A2 takes out Connected between head and A ' taps by electronic switch, the break-make of electronic switch controls as needed.B phases use A phase phases with C phases Same tap mode, A ', B ', C ' are connected as star point and form two level tap three-phase windings star-star connection.When electronic switch disconnects When, the number of turn of each phase electric winding is N, and back-emf caused by correspondence is E0；When electronic switch closes, each phase electric winding The number of turn is kept to N/2, and back-emf caused by correspondence is E0/2, and the voltage limit that can be now exported away from inverter has larger model Enclose, can continue to improve motor speed.

The three-phase windings of three-level tap can also be designed as needed, as shown in Figure 1.On the basis of original two level tap Increase A3, B3, C3 and A ', B ', C ' tap, and connected respectively by switching K4, K5, K6.As K1, K2, K3, K4, K5, K6 When all disconnecting, the number of turn of each phase electric winding is N, and back-emf caused by correspondence is E0；When K1, K2, K3 are closed, K4, K5, K6 break When opening, the number of turn of each phase electric winding is kept to N/2, and back-emf caused by correspondence is E0/2；As K1, K2, K3 disconnection, K4, K5, K6 During closure, the number of turn of each phase electric winding is kept to N/3, and back-emf caused by correspondence is E0/3, and now motor has higher speed-raising Space.

Embodiment of the present utility model is explained in detail above in association with accompanying drawing, but the utility model is not limited to be retouched The embodiment stated.For a person skilled in the art, it is right in the case where not departing from the utility model principle and spirit These embodiments carry out a variety of change, modification, replacement and modification, still fall within the scope of protection of the utility model.

Claims

1. multi-tap winding wide speed-regulation permanent-magnet synchronous motor, it is characterised in that：Including stator winding, the stator winding is embedded in institute State on stator tooth, the stator winding includes the phase electric winding being in series by least two coils, and the phase electric winding is set Three, three phase electric winding triangles connect or Y-connection, are parallel with least on the series coil of the phase electric winding One switch.

2. multi-tap winding wide speed-regulation permanent-magnet synchronous motor according to claim 1, it is characterised in that：The phase electric winding by Three coils are in series.

3. multi-tap winding wide speed-regulation permanent-magnet synchronous motor according to claim 2, it is characterised in that：The switch in parallel one Individual, the input of the switch in parallel is connected on the intermediate coil of the coil of three series connection in the phase electric winding, described The output end of switch is connected to the output end of the coil of three series connection.

4. multi-tap winding wide speed-regulation permanent-magnet synchronous motor according to claim 2, it is characterised in that：The switch in parallel two Individual, the input of two switches in parallel is connected to the intermediate coil of the coil of three series connection in the phase electric winding Upper and first coil output end, the output end of the switch are connected to the output end of the coil of three series connection.