WO2013020252A1

WO2013020252A1 - Large-scale direct-driven disk type switched reluctance wind generator and system thereof

Info

Publication number: WO2013020252A1
Application number: PCT/CN2011/001364
Authority: WO
Inventors: 肖珊彩; 秦明; 郭靖
Original assignee: 国电联合动力技术有限公司
Priority date: 2011-08-05
Filing date: 2011-08-16
Publication date: 2013-02-14
Also published as: CN102280968A

Abstract

A large-scale direct-driven disk type switched reluctance wind generator comprises a wheel hub (1), a main shaft (2), a front flange (3), a stator core (4), a machine case (5), a stator winding (6), a rotor core (7), a rear flange (8), an outer shaft sleeve (11) of a fore bearing, an outer end cover (12) of the fore bearing, the fore bearing (13), an inner shaft sleeve (14) of the fore bearing, an inner end cover (15) of the fore bearing, an inner shaft sleeve (16) of a rear bearing, an inner end cover (17) of the rear bearing, the rear bearing (18), an outer end cover (19) of the rear bearing, an outer shaft sleeve (20) of the rear bearing, and a locknut (21). The rotor core is mounted on the main shaft driven by the wheel hub. The stator core with the stator winding is mounted in a disk type shell formed by the front flange, the machine case and the rear flange. An air gap is formed between the rotor core and the stator core. The wind generator mainly comprises four structure forms: single stator and single rotor, double rotors with a stator in the middle, double stators with a rotor in the middle, and multiple stators and multiple rotors. The structure of the wind generator is simple and reliable, and reduces the weight and cost of an above-megawatt direct-driven switched reluctance wind generator.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large direct drive switched reluctance wind power generator, and more particularly to a large direct drive disc type switch reluctance wind power generator and a system therefor.

Background technique

With the continuous development of the wind power industry, wind power technology is constantly upgrading and replacing. The main performances are: improving single-unit capacity, developing new technologies to improve wind turbine performance, improving wind energy utilization, reducing wind power costs, and paying more attention to wind turbine safety and System reliability control. Wind farm operation control and predictive scheduling technologies are also constantly improving. At the same time, the use of offshore wind energy resources, the development of offshore wind farm construction technology, and the development of large offshore wind turbines are the focus of technological development.

Group and direct drive full power conversion wind turbines are the main. The doubly-fed wind turbine has the best price/performance ratio, but the ability to cross the grid and support is weak. The transmission chain of the doubly-fed wind turbine must have a high-power gearbox, which puts more stringent requirements on the reliability and maintainability of the unit. Direct-drive full-power conversion wind turbines are connected to the grid through inverters, which have strong ability to traverse the grid faults, have certain power grid support capacity, avoid the maintenance workload of high-power gearboxes, and improve reliability. However, due to its low speed, with the increase of power, the manufacturing process of multi-pole permanent magnet synchronous generator is complicated, the technical difficulty is large, the motor is large, and the cost is high. At the same time, with the continuous increase of unit capacity, high power The expensive price of the frequency converter increases its cost of use. The switched reluctance wind power generation system uses a switched reluctance generator as the electromechanical energy conversion core. The switched reluctance generator is a doubly salient motor. The stator and the rotor are both salient pole slotted structures, and the stator is provided with concentrated windings, and the rotor has neither winding nor permanent magnets. Switched reluctance generators do not have separate field windings and are combined with a centrally mounted stator armature. The stator is connected to the drive to output power to the straight The flow side then feeds energy into the grid via the grid side inverter. The switched reluctance motor has high energy density, simple structure, high reliability, and no demagnetization effect. The system has no current surge when it is connected to the grid, and has almost no influence on the system; the reactive power can be adjusted. The switched reluctance generator has a simple structure, no brush on the rotor, no winding, no permanent magnet. Its operation is equivalent to a current source, so that the output voltage does not change with the change of the speed within a certain speed range. Obviously, a variable speed generator such as a switched reluctance generator can improve the utilization efficiency of wind energy. Thanks to the above characteristics and reasonable design, the switched reluctance generator can achieve higher power generation efficiency under the direct drive of the wind, thus eliminating the need for a gear box and making the structure of the entire power generation system more compact and reliable. The development trend of wind power generation systems. During operation, the switched reluctance generator has many controllable parameters, such as opening angle and closing angle, which can easily realize more complicated control strategies and flexibly control the output DC voltage and current. Considering the characteristics of wind power generation, wind power generation systems first need to convert ever-changing wind energy into alternating current with constant frequency or voltage or constant current with constant voltage, and to achieve the above energy conversion with high efficiency to reduce costs. From this standard, the switched reluctance motor wind power generation system is very promising in wind power generation. With the improvement of the cost performance of high-power power electronic devices and the development of control strategies, the advantages of switched reluctance wind power generation systems will gradually be reflected.

As the motor power increases, the size of the motor will increase. Especially for low-speed motors, such as switched reluctance wind turbines, when the power is more than megawatts or more, the volume will become quite large, and the weight is heavy, which brings great difficulty to transportation, and the unit volume The output power is relatively small, increasing the cost of the generator and its system.

Summary of the invention

The object of the present invention is to overcome the shortcomings and deficiencies of the prior art described above, and to provide a direct-drive disk-type switched reluctance wind power generator capable of greatly reducing the cost and convenient transportation of a direct-drive switched reluctance wind power generator of megawatts or more. .

The technical solution to achieve the above objectives is as follows:

Large direct-drive disc-switched reluctance wind turbine, including hub, spindle, front flange, stator Core, housing, stator winding, rotor core, rear flange, frame, front bearing outer bushing, front bearing outer end cap, front bearing, front bearing inner bushing, front bearing inner end cap, rear bearing inner Bushing, rear bearing inner end cover, rear bearing, rear bearing outer end cover, rear bearing outer sleeve and lock nut; the hub and the main shaft are bolted together; the front bearing is mounted on the main shaft, front The outer sleeve of the bearing and the inner sleeve of the front bearing are mounted on the main shaft and are located at both ends of the front bearing, the outer end cover of the front bearing is sleeved on the outer sleeve of the front bearing, and the inner end cover of the front bearing is sleeved on the inner sleeve of the front bearing, before The flange is located between the outer end cover of the front bearing and the inner end cover of the front bearing, and is assembled on the front bearing, and is fastened together with the outer end cover of the front bearing and the inner end cover of the front bearing through the bolt; the front flange and the casing are The bolts are fastened together; the rear bearing is mounted on the main shaft, the outer sleeve of the rear bearing and the inner sleeve of the rear bearing are mounted on the main shaft and are located at both ends of the rear bearing, and the outer end cover of the rear bearing is sleeved on the outer sleeve of the rear bearing , the inner end cover of the rear bearing is sleeved on the inner sleeve of the rear bearing, and then The orchid is located between the outer end cover of the rear bearing and the inner end cover of the rear bearing, and is assembled on the rear bearing, and is fastened together with the outer end cover of the rear bearing and the inner end cover of the rear bearing through the bolt; the rear flange is bolted to the casing The frame is fastened together; the lock nut is mounted on the outer side of the outer bearing of the rear bearing above the main shaft; the front flange, the casing and the rear flange together constitute a disc casing; the stator core is fixed at In the disc housing, the stator winding is fixed in the slot of the stator core; the rotor core is mounted on the main shaft between the inner sleeve of the front bearing and the inner sleeve of the rear bearing, and a gas is formed between the rotor core and the stator core. Gap.

Further, the generator is a single stator, single rotor direct drive disc type switched reluctance wind power generator, the stator core is fixed on the front flange or the rear flange, and between the rotor core and the main shaft A rotor bracket is also installed.

Further, the generator is a double rotor, an intermediate stator direct drive disk type switch reluctance wind power generator, the stator core is fixed on a casing, the rotor core is located on both sides of the stator core, and is fixed on On the spindle.

Further, the generator is a double stator, an intermediate rotor direct drive disc type switch reluctance wind power generator, and the stator core is located on both sides of the rotor core, and is respectively fixed on the front flange and the rear flange; The rotor core is located in the middle of the stator core, and a rotor bracket is also installed between the rotor core and the main shaft. Further, the generator is a multi-stator, multi-rotor direct-drive switched reluctance wind power generator, two of the plurality of stator cores are respectively fixed on the front flange and the rear flange, and the remaining stator cores are fixed On the casing, the rotor cores are located in the middle of each stator core and are fixed on the main shaft.

The invention also provides a large direct drive disc type switch reluctance wind power generator system, comprising the above-mentioned disc type switch reluctance wind power generator, further comprising a power converter, a DC battery, an inverter and a load, a controller and An auxiliary power supply; the disc switch reluctance wind power generator is connected with a power converter, and the DC battery is connected in parallel between the power converter and the inverter and the load; the DC battery is connected with the controller, and the controller and the power converter Connected, the auxiliary power supply is connected to the controller.

Compared with the prior art, the present invention has the following beneficial effects:

1. The transmission mode of the invention adopts the direct drive mode of the hub, which greatly simplifies the transmission structure and greatly reduces the weight of the whole machine.

2. The motor of the invention adopts a disc-type switched reluctance generator structure, belonging to an axial magnetic field motor, and has the characteristics of light weight, small volume, compact structure, no loss of rotor, large torque/weight ratio, stable operation at low speed, motor The output power per unit volume becomes large, which reduces costs and facilitates transportation.

3. The invention can adopt various combined structures such as single air gap, double air gap and multiple air gap to further increase the output power per unit volume of the motor, thereby further reducing the volume and weight of the motor.

4. The invention can greatly reduce the weight and cost of a direct drive wind power generator, and can be widely applied to a direct drive type wind power generation system.

The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural view of a single stator, single rotor direct drive disc type switch reluctance wind power generator of the present invention; FIG. 2 is a structural diagram of a double rotor and intermediate stator direct drive disc type switch reluctance wind power generator of the present invention; ;

3 is a double stator, intermediate rotor direct drive disc type switch reluctance wind power generator structure of the present invention Figure 4 is a structural view of a multi-stator, multi-rotor direct drive disc-type switched reluctance wind power generator of the present invention; Figure 5 is a block diagram of a direct drive disc-type switched reluctance wind power generator system of the present invention.

Detailed ways

The invention will now be described in detail in conjunction with the drawings and embodiments.

Example 1

As shown in Figure 1, it is a single stator, single rotor direct drive disk switch reluctance wind turbine structure diagram. Some of the short centerlines in the figure represent bolts and nuts of various sizes. Other major components of the structure include: hub 1, spindle 2, front flange 3, stator core 4, housing 5, stator winding 6, rotor core 7, rear flange 8, frame 9, rotor bracket 10. Front bearing outer sleeve 11, front bearing outer end cover 12, front bearing 13, front bearing inner sleeve 14, front bearing inner end cover 15, rear bearing inner sleeve 16, rear bearing inner end cover 17, rear bearing 18. Rear bearing outer end cover 19, rear bearing outer sleeve 20, and lock nut 21.

Among them, the hub 1 and the main shaft 2 are fastened by bolts.

The front bearing 13 is mounted on the main shaft 1, and the front bearing outer sleeve 11 and the front bearing inner sleeve 14 are mounted on the main shaft 1 and are located at both ends of the front bearing 13, and the front bearing outer end cover 12 is sleeved on the front bearing outer sleeve 11. The front bearing inner end cover 15 is sleeved on the front bearing inner sleeve 14, and the front flange 3 is located between the front bearing outer end cover 12 and the front bearing inner end cover 15, and is assembled on the front bearing 13 through the bolt and the front The bearing outer end cap 12 and the front bearing inner end cap 15 are fastened together. The front flange 3 is then fastened to the casing 5 by bolts.

The stator core 4 is fixed to the front flange 3, and the stator winding 6 is fixed in the slot of the stator core 4. The rear bearing 18 is mounted on the main shaft 2, and the rear bearing outer sleeve 20 and the rear bearing inner sleeve 16 are mounted on the main shaft 1 and are located at both ends of the rear bearing 18, and the rear bearing outer end cover 19 is sleeved on the rear bearing outer sleeve 20. The rear bearing inner end cover 17 is sleeved on the rear bearing inner sleeve 16, and the rear flange 8 is located between the rear bearing outer end cover 19 and the rear bearing inner end cover 17, and is assembled on the rear bearing 18, through the bolt and The rear bearing outer end cap 19 is fastened to the rear bearing inner end cap 17. Rear flange 8 via bolt and housing

5. Rack 9 is fastened together.

The rotor core 7 is mounted on the rotor holder 10, and the rotor holder 10 is mounted on the spindle 2. The lock nut 2 1 is located outside the outer bearing outer sleeve 20 of the rear bearing 2 and is used for the axial positioning of the motor.

The main shaft 2 passes through the front bearing outer sleeve 1 1 , the front bearing 13 , the front bearing inner sleeve 14 , the rotor bracket 10 , the rear bearing inner sleeve 16 , the rear bearing 18 , the rear bearing outer sleeve 20 , and the locking The nut 21 extends through the front flange 3 and the rear flange 8.

Example 2

As shown in Fig. 2, it is a structure diagram of a double-rotor, intermediate stator direct-drive disc-type switched reluctance wind power generator. Some of the short centerlines in the figure represent bolts and nuts of various sizes. Other major components of the structure include: hub 1, spindle 2, front flange 3, stator core 4, housing 5, stator winding 6, rotor 7, rear flange 8, frame 9, front bearing outer shaft The sleeve 1 1 , the front bearing outer end cover 12 , the front bearing 13 , the front bearing inner sleeve 14 , the front bearing inner end cover 15 , the rear bearing inner sleeve 16 , the rear bearing inner end cover 17 , the rear bearing 18 , Rear bearing outer end cover 19, rear bearing outer sleeve 20, lock nut 21.

Among them, the hub 1 and the main shaft 2 are fastened by bolts.

The front bearing 13 is mounted on the main shaft 2, and the front bearing outer sleeve 11 and the front bearing inner sleeve 14 are mounted on the main shaft 1 and are located at both ends of the front bearing 13 and the front bearing outer end cover 12 is sleeved on the outer shaft of the front bearing. On the sleeve 11, the front bearing inner end cover 15 is sleeved on the front bearing inner sleeve 14, and the front flange 3 is located between the front bearing outer end cover 12 and the front bearing inner end cover 15, and is fitted on the front bearing 13 , bolted to the front bearing outer end cap 12, the front bearing inner end cap 15 is fastened together. The front flange 3 is then fastened to the casing 5 by bolts.

The stator core 4 is located between the rotor cores 7 and is fixed to the casing 5, and the stator windings 6 are fixed in the slots of the stator core 4.

The rear bearing 18 is mounted on the main shaft 2, the outer bearing outer sleeve 20 and the rear bearing inner sleeve 16 Mounted on the main shaft 1 and located at both ends of the rear bearing 18, the rear bearing outer end cover 19 is sleeved on the rear bearing outer sleeve 20, and the rear bearing inner end cover 17 is sleeved on the rear bearing inner sleeve 16, the rear flange 8 is located Between the rear bearing outer end cover 19 and the rear bearing inner end cover 17, and mounted on the rear bearing 18, the bolt and the rear bearing outer end cover 19 and the rear bearing inner end cover 17 are fastened together. The rear flange 8 is fastened to the casing 5 and the frame 9 via bolts.

The rotor core 7 is located on both sides of the stator core 4 and is fixed to the main shaft 2. The lock nut 21 is located outside the outer bearing outer sleeve 20 on the outer side of the main shaft 2 for axial positioning of the motor.

The main shaft 2 passes through the front bearing outer sleeve 1 1 , the front bearing 13 , the front bearing inner sleeve 14 , the rotor core 4 , the rear bearing inner sleeve 16 , the rear bearing 18 , the rear bearing outer sleeve 20 , and the lock The nut 21 is tightened and penetrates the front flange 3 and the rear flange 8.

Example 3

As shown in Fig. 3, it is a structural diagram of a double stator and intermediate rotor direct drive disc type switch reluctance wind power generator. Some of the short centerlines in the figure represent bolts and nuts of various sizes. Other major components of the structure include: hub 1, spindle 2, front flange 3, stator core 4, housing 5, stator winding 6, rotor core 7, rear flange 8, frame 9, rotor bracket 1 0, front bearing outer bushing 1 1 , front bearing outer end cap 12 , front bearing 1 3 , front bearing inner bushing 14 , front bearing inner end cap 15 , rear bearing inner bushing 16 , rear bearing inner end cap 1 7. Rear bearing 18, rear bearing outer end cover 19, rear bearing outer sleeve 20, lock nut 21.

Among them, the hub 1 and the main shaft 2 are fastened by bolts.

The front bearing 13 is mounted on the main shaft 2, and the front bearing outer sleeve 11 and the front bearing inner sleeve 14 are mounted on the main shaft 2 and are located at both ends of the front bearing 13 and the front bearing outer end cover 12 is sleeved on the outer shaft of the front bearing. On the sleeve 1 1 , the front bearing inner end cover 15 is sleeved on the front bearing inner sleeve 14 , and the front flange 3 is located between the front bearing outer end cover 12 and the front bearing inner end cover 15 and is assembled to the front bearing 13 Above, the bolt and the front bearing outer end cap 12 are fastened to the front bearing inner end cap 15. The front flange 3 is then fastened to the casing 5 by bolts.

The stator core 4 is located on both sides of the rotor core 7, and is respectively fixed on the front flange 3 and the rear flange 8. The stator winding 6 is fixed in the groove of the stator core 4.

The rear bearing 18 is mounted on the main shaft 1, and the rear bearing outer sleeve 20 and the rear bearing inner sleeve 16 are mounted on the main shaft 1 and are located at both ends of the rear bearing 18, and the rear bearing outer end cover 19 is sleeved on the rear bearing outer sleeve 20. The rear bearing inner end cover 17 is sleeved on the rear bearing inner sleeve 16, and the rear flange 8 is located between the rear bearing outer end cover 19 and the rear bearing inner end cover ,, and is assembled on the rear bearing 18, through the bolt and the rear The bearing outer end cap 19 is fastened to the rear bearing inner end cap 17. Rear flange 8 bolted to the casing

5. Rack 9 is fastened together.

The rotor core 7 is located in the middle of the stator core 4 and is fixed to the rotor bracket 10, and the rotor bracket 10 is located between the front bearing inner sleeve 14 and the rear bearing inner sleeve 16 and is fixed to the main shaft 2.

A lock nut 21 is located outside the outer bearing outer sleeve 20 on the outer side of the main shaft 2 for axial positioning of the motor.

Example 4

As shown in Fig. 4, it is a structural diagram of a multi-stator and multi-rotor direct drive disc-type switched reluctance wind power generator. Some of the short centerlines in the figure represent bolts and nuts of various sizes. Other major components of the structure include: hub 1, spindle 2, front flange 3, stator core 4, housing 5, stator winding

6. Rotor core 7, rear flange 8, frame 9, front bearing outer sleeve 1 1, front bearing outer end cover 12, front bearing 1 3, front bearing inner sleeve 14, front bearing inner end cover 15 The rear bearing inner sleeve 16, the rear bearing inner end cover 17, the rear bearing 18, the rear bearing outer end cover 19, the rear bearing outer sleeve 20, and the lock nut 21.

Among them, the hub 1 and the main shaft 2 are fastened by bolts.

The front bearing 13 is mounted on the main shaft 1, and the front bearing outer sleeve 11 and the front bearing inner sleeve 14 are mounted on the main shaft 1 and are located at both ends of the front bearing ,, and the front bearing outer end cover 12 is sleeved on the outer sleeve of the front bearing. 1 1 , the front bearing inner end cover 15 is sleeved on the front bearing inner sleeve 14 and the front flange 3 is located outside the front bearing The end cap 12 is interposed between the front bearing inner end cover 15 and the front bearing 13 and is fastened to the front bearing inner end cover 15 via the bolt and the front bearing outer end cover 12. The front flange 3 is then bolted to the casing 5 together.

The two disc stator cores 4 are respectively fixed to the front flange 3 and the rear flange 8, and the remaining disc stator cores 4 are fixed to the casing 5, and the stator windings 6 are fixed in the slots of the stator core 4.

The rear bearing 18 is mounted on the main shaft 2, and the rear bearing outer sleeve 20 and the rear bearing inner sleeve 16 are mounted on the main shaft 1 and are located at both ends of the rear bearing 18, and the rear bearing outer end cover 19 is sleeved on the rear bearing outer sleeve 20. The rear bearing inner end cover 17 is sleeved on the rear bearing inner sleeve 16, and the rear flange 8 is located between the rear bearing outer end cover 19 and the rear bearing inner end cover 17, and is assembled on the rear bearing 18, through the bolt and the rear The bearing outer end cap 19 is fastened to the rear bearing inner end cap 17. The rear flange 8 is fastened to the frame 5 and the frame 9 via bolts.

The respective disc rotor cores 7 are located in the middle of the stator core 4 and are fixed to the main shaft 2.

A lock nut 21 is located outside the outer bearing outer sleeve 20 on the outer side of the main shaft 1 for axial positioning of the motor.

The main shaft 2 passes through the front bearing outer sleeve 11, the front bearing 13, the front bearing inner sleeve 14, the rotor core 7, the rear bearing inner sleeve 16, the rear bearing 18, the rear bearing outer sleeve 20, and the lock nut 21 in sequence. And running through the front flange 3 and the rear flange 8.

Example 5

As shown in FIG. 5, the direct-drive switched reluctance wind power generator system of the present invention includes any one of the above-mentioned embodiments 1-4, a disk-type switched reluctance generator 23, a power converter 24, a DC battery 25, and an inverter. And a load 26, a controller 27, an auxiliary power supply 28, wherein the disc-type switched reluctance wind power generator 23 is connected to the power converter 24, and the DC converter 25 is connected in parallel between the power converter 24 and the inverter and the load 26; 25 is coupled to controller 27; controller 27 is coupled to power converter 24; auxiliary power source 28 is coupled to controller 27.

The rotor of the disc-type switched reluctance generator 23 is rotated by the hub and is a wind/mechanical energy conversion device; the power converter 24 receives the control command from the controller 27, and the switched reluctance generator The DC output from 23 is output to the system's energy storage device - DC battery 25; controller 27, including the drive circuit, overvoltage and overcurrent protection circuit, voltage and current detection circuit, rotor position detection circuit, microcontroller or DSP minimum system circuit, etc. The device 27 comprehensively processes the feedback information of the rotor position, speed and current provided by the rotor position detector and the voltage current detector, and the external input command, thereby realizing the control of the operating state of the disk-type switched reluctance generator 23, and controlling the switching reluctance. The generator phase windings work in turn to realize the conversion of mechanical energy to electrical energy. The DC battery 25 is an energy storage device of the system; the inverter and the load 26 invert the direct current generated by the disk switched reluctance generator 23 into an alternating current to directly supply an alternating current load; and the auxiliary power source 28 is used to supply the controller 27 Provide multi-channel power supply such as 15V, ± 5V.

It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. Large direct drive disc type switch reluctance wind power generator, which is characterized by including a hub, a main shaft, a front flange, a stator core, a casing, a stator winding, a rotor core, a rear flange, a frame, a front bearing Outer bushing, front bearing outer end cap, front bearing, front bearing inner bushing, front bearing inner end cap, rear bearing inner bushing, rear bearing inner end cap, rear bearing, rear bearing outer end cap, rear bearing outer axle Socket and lock nut;

The hub and the main shaft are fastened together by bolts;

The front bearing is mounted on the main shaft, the outer sleeve of the front bearing and the inner sleeve of the front bearing are mounted on the main shaft and are located at both ends of the front bearing, the outer end cover of the front bearing is sleeved on the outer sleeve of the front bearing, and the inner end cover of the front bearing The sleeve is sleeved on the inner sleeve of the front bearing, and the front flange is located between the outer end cover of the front bearing and the inner end cover of the front bearing, and is assembled on the front bearing, and is fastened by the bolt and the outer end cover of the front bearing and the inner end cover of the front bearing. Together; the front flange and the casing are bolted together;

The rear bearing is mounted on the main shaft, the outer sleeve of the rear bearing and the inner sleeve of the rear bearing are mounted on the main shaft and are located at both ends of the rear bearing, and the outer end cover of the rear bearing is sleeved on the outer sleeve of the rear bearing, and the inner end cover of the rear bearing The sleeve is sleeved on the inner sleeve of the rear bearing, and the rear flange is located between the outer end cover of the rear bearing and the inner end cover of the rear bearing, and is assembled on the rear bearing, and is fastened through the bolt and the outer end cover of the rear bearing and the inner end cover of the rear bearing. Together; the rear flange is fastened to the casing and the frame by bolts;

a lock nut is mounted on the outer side of the outer bearing of the rear bearing above the main shaft;

The front flange, the casing and the rear flange together form a disc casing; the stator core is fixed in the disc casing, and the stator winding is fixed in the slot of the stator core; the rotor core is installed in the front bearing An air gap is formed between the sleeve and the inner sleeve of the rear bearing, and an air gap is formed between the rotor core and the stator core.

2. The disc-type switched reluctance wind power generator according to claim 1, wherein the single-stator, single-rotor direct-drive disc-type switched reluctance wind power generator is fixed to the front flange or A rotor bracket is mounted on the rear flange and between the rotor core and the main shaft.

3. The disc-type switched reluctance wind power generator according to claim 1, wherein The utility model relates to a double rotor and an intermediate stator direct drive disc type switch reluctance wind power generator. The stator iron core is fixed on the casing, and the rotor iron core is located on both sides of the stator core and fixed on the main shaft.

The disc-type switched reluctance wind power generator according to claim 1, characterized in that it is a double stator, intermediate rotor direct drive disc type switch reluctance wind power generator, and the stator core is located on both sides of the rotor core , respectively fixed on the front flange and the rear flange; the rotor core is located in the middle of the stator core, and a rotor bracket is further installed between the rotor core and the main shaft.

The disc-type switched reluctance wind power generator according to claim 1, wherein the multi-stator, multi-rotor direct-drive switched reluctance wind power generator, two of the plurality of stator cores are respectively fixed On the front flange and the rear flange, the remaining stator cores are fixed on the casing, and the rotor cores are located in the middle of each stator core and fixed on the main shaft.

A large-sized direct-drive disk-switched reluctance wind power generator system, comprising the disk-type switched reluctance wind power generator according to any one of claims 1 to 5, further comprising a power converter, a DC battery, and a reverse Transformers and loads, controllers and auxiliary power supplies;

The disc-type switched reluctance wind power generator is connected to a power converter, and the DC converter is connected in parallel between the power converter and the inverter and the load; the DC battery is connected to the controller, and the controller is connected with the power converter, and the auxiliary The power supply is connected to the controller.