CN200997552Y

CN200997552Y - Synchronizing wind-driven generater of permanent-magnetic direct-driven

Info

Publication number: CN200997552Y
Application number: CNU2007200000204U
Authority: CN
Inventors: 刘宝生; 丁雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-04
Filing date: 2007-01-04
Publication date: 2007-12-26
Anticipated expiration: 2017-01-04

Abstract

A permanent magnetic direct-driving synchronous wind-driven generator is characterized in that: the quantity of unit coil and magnetic pole meets a common factor, which is more than or equal to 2. Wherein, a maximum common factor is n. The unit coil is averagely divided into n parts, and each part is defined as a quadrant, in which the unit coils are respectively numbered from A in the same direction. The unit coils in the quadrant, which have the same number, are connected in series or drawn out in parallel by a leading-out wire.

Description

Permanent magnet direct drive synthronous wind-mill generator

Technical field

The utility model relates to a kind of generator, especially relates to a kind of permanent magnet direct drive synthronous wind-mill generator.

Background technology

Motor is to be that media carries out the calutron that mechanical energy and electric energy are changed mutually with the electromagnetic field.In order in motor, to set up the necessary air-gap field of energy converting between mechanical, adopt two kinds of methods usually.A kind of is to feed electric current in the winding of motor, produces magnetic field, for example common direct current machine and synchronous machine with electric current.This motor had both needed special winding and corresponding device thereof, also needed constantly to provide energy to keep electric current.Another motor is to produce magnetic field by permanent magnet, and it has utilized the inherent characteristic of permanent magnet, promptly by after magnetizing in advance, does not need to add any energy and just can set up magnetic field around it.So not only simplify the structure of motor but also saved the energy.

Present low-speed permanent magnetic direct-drive formula wind-driven generator both domestic and external adopts asynchronous form more, and its reason is that then the change of the resistance of start square of motor is very big, can cause strong vibration, causes motor normally to use if adopt the synchronization principles generating.

After adopting asynchronous form, though the resistance of start square of motor is improved, oscillation phenomenon has also disappeared, but do not overcome the moment of resistance fully, brought other problem simultaneously, be i.e. occur high temperature during motor operation, and its efficient is lower, does not reach 50% usually.Because the existence of this situation,, cause motor normally to use when phenomenons such as motor just occur easily after operation a period of time that coil burns out, demagnetization, magnet are split cruelly.Though some asynchronous machine product has adopted the installation fan to lower the temperature, can not fundamentally solve resistance of start square, intensification and under powered problem that the generation current machine exists.And this motor is bulky, and cost is higher.

The utility model content

The utility model provides a kind of and has realized the permanent magnet direct drive synthronous wind-mill generator of synchronous effect with asynchronous form, has overcome the low and bulky problem of heating, power that existing asynchronous generator exists.

A kind of permanent magnet direct drive synthronous wind-mill generator, the number of its unit coil and magnetic pole satisfies the common factor that has more than or equal to 2, and wherein greatest common factor is n.

All unit coils are divided into n part, each part is defined as a quadrant, all begin the unit coil numbering from A respectively in each quadrant area, the identical unit coil of numbering in each described quadrant is drawn with the lead-out wire serial or parallel connection according to equidirectional.

Further, the voltage of getting the unit coil that is numbered A in arbitrary quadrant is U, and the unit coil that satisfies voltage and be the integral multiple of U is synchronous coil, with the output that links together of its lead-out wire.

The mode of connection of described lead-out wire depends on the different requirements that output voltage is high or low.

Compared with prior art, the beneficial effects of the utility model are: the utility model has kept the structure of existing asynchronous generator, by in asynchronous, seeking synchronous coil, synchronous coil is drawn with a lead-out wire, as a synchronous generator, so just an asynchronous generator is divided into many synchronous generators, has reached the effect of synchronous generator; Because the electric current of having eliminated between each coil is inconsistent, effectively solved big, the easy high temperature of starting torque, inefficient problem that existing asynchronous generator exists, its operating efficiency has improved 70%.

Description of drawings

Fig. 1 is a permanent magnet direct drive synthronous wind-mill generator loop construction schematic diagram;

Fig. 2 is a permanent magnet direct drive synthronous wind-mill generator synchronizing current analysis chart.

Embodiment

Now in conjunction with the accompanying drawings the utility model is described in further detail.Fig. 1 is a permanent magnet direct drive synthronous wind-mill generator loop construction schematic diagram, is example with 72 grooves, 24 coil generator, and principle of the present utility model is described.With reference to figure 1, wherein 1～72 represent 72 wire casings, I, II, III, IV represent four quadrants, and the A in each quadrant, B, C, D, E, F represent 6 coils, and four quadrants have 24 coils.The magnetic pole number is 20 (not representing in Fig. 1), and 80 represent lead-out wire, the 81st, and output.This generator Structure is a kind of frame mode of at present the most general asynchronous generator, during generator work, because the sense of current in each coil is not quite similar (just asynchronous), so caused the starting torque of asynchronous generator greatly, easily to produce high temperature, the inferior problem of inefficiency.In fact this but " asynchronous " is not absolute, still has synchronia in some coil.72 wire casings are divided into four quadrants (greatest common factor of 20 magnetic poles and 24 unit coils is 4) here, I quadrant wire casing from 1～18, the II quadrant wire casing from 19～36, III quadrant wire casing from 37～54, the IV quadrant wire casing from 55～72.Like this, the wire casing number of each quadrant is 18, and coil number is 6, and the magnetic pole number is 5.When generator was started working, first coil of each quadrant was that the sense of current in the loop A is identical.According to connection shown in Figure 1 lead-in wire mode is coil that 4 unit coils of A are connected and (adopted series connection in this case, according to actual needs, also may select parallel connection), just formed a small-sized synchronous generator, in output 81 outputs, realized synchronous effect at last.By that analogy, also there are other five groups of identical coil combination of electric current among this embodiment, that is:

4 coil B

4 coil C

4 coil D

4 coil E

4 coil F

This shows and adopt such mode of connection of drawing, 1 asynchronous generator originally can be divided into 6 present three-phase synchronous generators, 3 original lead-out wires are become 18 present lead-out wires, so just realized the effect of synchronous generator with the form of asynchronous generator.

Further, can be with voltage identical or satisfy the integral multiple relation the end of a thread be connected together, it is synchronous also to satisfy electric current, and has reduced the quantity of lead-out wire.

Fig. 2 is a permanent magnet direct drive synthronous wind-mill generator synchronizing current analysis chart, the A coil of each quadrant all has been connected together becomes a synchronous output winding group (B, C, D, E, the synchronous output winding group of F are in like manner arranged), each synchronous output winding group all has α, β, three of γ to draw the end of a thread, all coil groups are drawn the measuring voltage that the end of a thread is done permutation and combination type, obtain the result as shown in Figure 2.

With quadrant among Fig. 1 is benchmark, and A α-A α represents the 1st coil connectors α of A group coil, and the voltage of its output is 53v.The rest may be inferred, and the output voltage of the 2nd coil connectors A α-A β of A coil is 41v, and the voltage of second connector lug of A coil and the 1st coil connectors A β-B α of B coil is 80v ...Can find to be arranged in figure and equate respectively from the coil connectors voltage on the diagonal left to bottom right, and A α-cornerwise voltage in B β place and A α-cornerwise voltage in D γ place all being 106v, is 2 times of A α voltage (53v).They all are synchronous like this, can couple together with lead, become synchronous output.

By the above-mentioned mode of connection, reached the effect of synchronous generator, make the unit coil in the asynchronous generator connect together with synchronizing characteristics, the electric current of having eliminated between each coil is inconsistent, also just overcome big, the easy high temperature of insoluble starting torque, the inefficient problem that present asynchronous generator exists, the operating efficiency of whole generating machine has also improved 70% than original.

The above execution mode only is a preferred embodiment of the present utility model; and the utility model is not limited to the foregoing description; for persons skilled in the art; the any conspicuous change of under the prerequisite that does not deviate from the utility model principle it being done all belongs to the protection range of design of the present utility model and claims.

Claims

1. permanent magnet direct drive synthronous wind-mill generator is characterized in that: the number of its unit coil and magnetic pole satisfies the common factor that has more than or equal to 2, and wherein greatest common factor is n;

2. permanent magnet direct drive synthronous wind-mill generator according to claim 1, it is characterized in that: the voltage of getting the unit coil that is numbered A in arbitrary quadrant is U, the unit coil that satisfies voltage and be the integral multiple of U is synchronous coil, with the output that links together of its lead-out wire.

3. permanent magnet direct drive synthronous wind-mill generator according to claim 1 is characterized in that: the mode of connection of described lead-out wire depends on the different requirements that output voltage is high or low.