CN103334879B - The excitatory wind power generation plant of brush-free claw-pole formula - Google Patents

Abstract

The invention discloses a brushless claw pole type excitation wind power generation device, which comprises fan blades, a generator, a bracket, a wind vane, a slip ring assembly, and a fixing seat; the fan blades are fixed on the rotating shaft of the generator through threads, and the generator It is fixed on one end of the bracket, the other end of the bracket is connected with the slip ring assembly, the slip ring assembly is fixedly connected on the fixing seat, and the wind vane is fixed on the side of the bracket close to the wind blade. In the present invention, by adopting the brushless claw pole excitation generator, the power generation of the device is not limited by the rotational speed, and can work normally at different rotational speeds, improving the working stability of the device in various environments; the wind vane is fixedly connected with the bracket The structure close to the side of the wind blade can change the direction of the wind blade well when the wind direction changes. At the same time, compared with the traditional wind turbine, there are less mechanisms such as the rudder stock, so the structure is simple and the working space is small; the excitation generator adopts the front stator, which is completely With sealed structure, the motor needs no maintenance and has strong adaptability to the environment.

Description

Brushless claw pole excitation wind power generation device

technical field

The invention relates to the field of energy technology, in particular to a brushless claw pole excitation wind power generation device.

Background technique

Existing wind generators use permanent magnet generators, equipped with controllers for voltage regulation, batteries for energy storage, and inverters to convert and boost voltages required by household appliances. Since the rotor is a permanent magnet, the magnetic field cannot be controlled and adjusted, and its output power increases with the increase of the wind speed. If the power consumption is less than the power generation, the excess power will be released through the electronic load of the controller. , to control the system voltage. This mode controller has high work intensity and poor reliability.

Permanent magnet wind generators are suitable for use under stable speed and stable load conditions, such as large-scale wind farms, where the wind turbines use automatic speed regulation mechanisms, and the generators are connected to the grid for power generation. At the same time, since the rotor magnetic field cannot be controlled by the permanent magnet wind turbine, it is difficult to control the output power of the generator, so it is not suitable for use in areas without power grids, such as islands and fishing rafts without electricity. Moreover, the permanent magnet is expensive and the cost of the generator is high, and the production of the controller is difficult and expensive, which further increases the cost of the permanent magnet wind turbine.

Contents of the invention

The purpose of the present invention is to provide a brushless claw-pole excitation wind power generator. When the wind force changes and the power consumption changes, the special motor can automatically control the output, stabilize the voltage, simplify the voltage regulation control system, and it does not need to operate at a stable speed. Power generation under stable load conditions to meet the needs of areas without grids.

The technical solution to realize the purpose of the present invention is: a brushless claw-pole excitation wind power generation device, including wind blades, generators, brackets, wind rudders, slip ring assemblies, and fixing seats; the wind blades are fixed on the generator through threads, The generator is fixed on one end of the bracket, the other end of the bracket is connected with the slip ring assembly, the slip ring assembly is fixed on the fixed seat, the wind vane is fixed on the side of the bracket near the blade, the blade, the generator, the bracket and the wind direction The rudder turns around the slip ring assembly.

One end connecting the bracket with the slip ring assembly is a straight line segment.

The generator includes a stepped shaft, a limit ring, a front cover, a double-sealed deep groove ball bearing on the left, an inner stator, an excitation coil, claw poles, a stator core, a stator coil, a rear end cover, a rectifier bridge, and a double-sealed deep groove ball bearing on the right. Groove ball bearings, regulators, rear end covers and sealing rings; in terms of the overall direction of the generator, the position of the stepped shaft is defined as the left end of the system, and the position of the rear cover is defined as the right end of the system; the claw poles are fixed on the stepped shaft On the top, the knurl of the stepped shaft is interference fit with the stepped shaft, and the left side of the claw pole is positioned by the shoulder of the stepped shaft; the excitation coil is embedded in the inner stator; the right end of the inner stator is embedded in the claw pole, and the left end is fixed on the front end cover; Stator coils surround the outside of the claw poles, the axis of the stator coils is parallel to the stepped axis; the stator core is embedded in the stator coil, the stator core and the claw poles are in clearance fit, and the outer surface of the stator core is embedded in the front end cover; the left double-sealed deep groove ball bearing Set on the left end step of the stepped shaft, the limit ring is set on the left side of the inner ring of the left double-sealed deep groove ball bearing, and the left side of the outer ring is matched with the front end cover; the right double-sealed deep groove ball bearing is sleeved on the stepped shaft On the step at the right end, the outer ring is matched with the rear end cover, and the left side of the inner ring is positioned by the shoulder of the step at the right end of the stepped shaft; the rear end cover is respectively connected with the front end cover and the rear cover through threads; the rectifier bridge and the regulator plug Installed on the right elevation of the rear end cover; the sealing ring is located between the front end cover and the limit ring, and is sealed by the sealing ring.

The fan blade is connected to the left end of the stepped shaft through threads, and is positioned through the limit ring; the bracket is fixedly connected to the outside of the rear end cover.

The slip ring assembly includes a slip ring rear end cover, a traditional conductive ring, a housing, a slip ring front cover, an inner positioning cylinder, double-sealed deep groove ball bearings, an insulating seat, a nut and a positioning plate; the inner positioning cylinder is a hollow cylinder with one end There are steps, the traditional conductive ring is centered on the inner positioning cylinder, and is fixed on the outer wall of the inner positioning cylinder. One end of the traditional conductive ring is positioned by the shaft shoulder, and the other end is locked by the nut; the step of the inner positioning cylinder is equipped with double seals. Groove ball bearing, double-sealed deep groove ball bearing outer ring is matched with the front end cover of the slip ring, and the inner ring is stuck on the step surface; one end of the shell is connected with the front end cover of the slip ring, and the other end is connected with the rear end cover of the slip ring; the insulating seat is arranged symmetrically The top and bottom of the traditional conductive ring are fixedly connected with the casing, and the positioning plate is fixed on the casing.

The bracket cooperates with the inner positioning cylinder, and is locked and fixed with set screws, and the fixing seat is connected with the slip ring assembly through the positioning plate.

Compared with the prior art, the present invention has significant advantages: 1. By adopting the brushless claw-pole excitation generator, the power generation of the device is not limited by the speed, and it can work normally at different speeds, improving the performance of the device in various environments. work stability. Overcoming geographical restrictions is conducive to popularization and use.

2. Use the excitation motor with a built-in regulator to stabilize the voltage. It is suitable for use in areas without grids and unstable loads. At the same time, it simplifies the existing controller, has a compact structure, and saves costs.

3. The excitation generator of the present invention adopts a brushless structure with a front stator and a completely sealed structure. The motor requires no maintenance and has strong adaptability to the environment.

4. The wind vane and bracket are fixed on the side close to the wind blade, which can change the direction of the wind blade well when the wind direction changes. At the same time, compared with the traditional wind turbine, the rudder stock and other mechanisms are simple and the working space is small.

Description of drawings

FIG. 1 is a schematic structural view of a brushless claw pole excitation wind power generation device according to the present invention.

Fig. 2 is a schematic structural diagram of a motor of a brushless claw pole excitation wind power generation device according to the present invention.

Fig. 3 is a schematic diagram of a slip ring assembly of a brushless claw pole excitation wind power generation device according to the present invention.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , a brushless claw-pole excitation wind power generation device includes a fan blade 1 , a generator 2 , a bracket 3 , a wind rudder 4 , a slip ring assembly 5 , and a fixing seat 7 . The fan blade 1 is fixed on the generator 2 through threads, the generator 2 is fixed on one end of the bracket 3, the other end of the bracket 3 is connected with the slip ring assembly 5, the slip ring assembly 5 is fixedly connected on the fixing seat 7, and the wind vane 4 is fixed On the side of the bracket 3 close to the blade 1 , the blade 1 , the generator 2 , the bracket 3 and the wind vane 4 rotate around the slip ring assembly 5 .

The bracket 3 is composed of a semicircular pipe fitting and a straight section pipe fitting, the wind vane 4 is a semicircular thin plate, and the wind vane 4 is embedded on the semicircular pipe fitting of the bracket 3 .

2, the generator 2 includes a stepped shaft 8, a limit ring 9, a front end cover 10, a left double-sealed deep groove ball bearing 11, an inner stator 12, an excitation coil 13, claw poles 14, a stator core 15, and a stator Coil 16, rear end cover 17, rectifier bridge 18, right double-sealed deep groove ball bearing 19, regulator 20, rear end cover 21 and sealing ring 34; in terms of the overall direction of the whole motor 2, the position of the stepped shaft 8 is defined is the left end direction of the system, and the position of the rear cover 21 is defined as the right end direction of the system; the claw pole 14 is fixed on the stepped shaft 8, and the knurl of the stepped shaft 8 is interference fit with the stepped shaft 8, and the claw pole 14 passes through on the left side The shoulder of the stepped shaft 8 is positioned; the excitation coil 13 is embedded in the inner stator 12; the right end of the inner stator 12 is embedded in the claw pole 14, and the left end is fixed on the front end cover 10; The center is parallel to the step axis 8. The stator core 15 is embedded in the stator coil 16, the inner surface of the stator core 15 is in clearance fit with the outer surface of the claw pole 14, the outer surface of the stator core 15 is embedded in the front end cover 10, and the stator core 15 is located between the front end cover 10 and the rear end cover 17 , is clamped by the front end cover 10 and the rear end cover 17; the left double-sealed deep groove ball bearing 11 is set on the left end step 31 of the stepped shaft 8, and the left side of the inner ring is provided with a limit ring 9, and the left side of the outer ring is connected to the front end. The cover 10 fits; the right side double-sealed deep groove ball bearing 19 is set on the right end step 32 of the stepped shaft 8, its outer ring is matched with the rear end cover 17, and the left side of the inner ring passes through the shoulder of the right end step 32 of the stepped shaft 8 Positioning; the rear end cover 17 is respectively connected with the front end cover 10 and the rear cover plate 21 through threads. The rectifier bridge 18 and the regulator 20 are inserted on the right side elevation of the rear end cover 17 . The sealing ring 34 is located between the front end cover 10 and the limiting ring 9 , and is sealed by the sealing ring 34 .

The fan blade 1 is connected to the left end of the stepped shaft 8 through threads, and is positioned through the limit ring 9 . Bracket 3 is welded on rear end cover 17 outer sides.

3, the slip ring assembly 5 includes a slip ring rear end cover 22, a traditional conductive ring 23, a casing 24, a slip ring front end cover 25, an inner positioning cylinder 26, a double-sealed deep groove ball bearing 27, an insulating seat 28, and a nut 29 and positioning plate 33; the inner positioning cylinder 26 is a hollow cylinder, and one end is provided with a step, and the traditional conductive ring 23 is centered on the inner positioning cylinder 26, and is fixedly connected on the outer wall of the inner positioning cylinder 26, and one end of the traditional conductive ring 23 is positioned by the shoulder. The other end is locked by a nut 29; the step of the inner positioning cylinder 26 is provided with a double-sealed deep groove ball bearing 27, the outer ring of the double-sealed deep groove ball bearing 27 cooperates with the front end cover 25 of the slip ring, and the inner ring is stuck on the step surface The front end cover 25 of the slip ring at one end of the shell 24 is connected to the rear end cover 22 of the slip ring at the other end; The positioning plate 33 is fixed on the casing 24 .

The straight section pipe fitting of the bracket 3 cooperates with the inner positioning cylinder 26 and is locked and fixed with the set screw 30 . The fixing seat 7 is connected with the slip ring assembly 5 through the positioning plate 33 .

The fan blade 1 of the brushless claw pole excitation wind power generation device drives the claw pole 14 to rotate through the stepped shaft 8, so that the relative claw pole 14 of the stator coil 16 can cut the magnetic induction line, and the stator coil 16 generates three-phase alternating current, which passes through the motor The internal rectifier bridge 18 is a three-phase bridge rectifier, which outputs stable direct current to charge the battery or supply power to the inverter; the output end of the motor 2 is connected to the traditional conductive ring 23 of the inner positioning cylinder 26 through the bracket 3, and the traditional conductive ring 23 Connect the electrodes of the insulating seat 28 through the brush, and finally output from the output end of the slip ring assembly 5, which can be connected to the battery for storage, or use an inverter for home appliances; when the output voltage fluctuates due to changes in wind force and power consumption , the regulator 20 in the motor 2 samples from the output end of the motor, automatically adjusts the excitation current of the rotor, controls the rotor magnetic field, thereby controls the output, and achieves the purpose of stabilizing the voltage; when the wind direction changes, the fan blade 1, the motor 2, and the bracket 3 Under the guidance of the wind vane 4, it rotates around the slip ring assembly 5 to the windward position; the brushless and sealed structure of the motor 2 is safe and reliable, has a long service life and is maintenance-free.

Existing excitation motors only generate electricity at a speed of 1000 rpm or more, and large permanent magnet generators must be equipped with a governor to achieve the power generation speed. Using this device can ensure power generation at a low speed of 300 rpm; and Compared with existing wind power generators, it can also ensure low-speed power generation without a governor. For generators with the same capacity, the cost of permanent magnets is 2 to 5 times higher than that of excitation, especially for large-capacity motors, the gap is more obvious.

Claims (5)

1. the excitatory wind power generation plant of brush-free claw-pole formula, it is characterised in that: include fan blade (1), electromotor (2), support (3), wind direction rudder (4), slip ring assembly (5), fixing seat (7)；Fan blade (1) is threadedly secured on the rotation axle of electromotor (2), electromotor (2) is fixed on one end of support (3), the other end of support (3) is connected with slip ring assembly (5), slip ring assembly (5) is connected on fixing seat (7), and wind direction rudder (4) is fixed on the upper side near fan blade (1) of support (3)；Fan blade (1), electromotor (2), support (3) and wind direction rudder (4) rotate around slip ring assembly (5), support (3) is made up of with straightway pipe fitting semicircle pipe fitting, wind direction rudder (4) is thin semicircular plate, and wind direction rudder (4) is embedded on the semicircle pipe fitting of support (3).

2. the excitatory wind power generation plant of brush-free claw-pole formula according to claim 1, it is characterised in that: electromotor (2) includes multidiameter (8), spacing collar (9), drive end bearing bracket (10), left side double containment deep groove ball bearing (11), inner stator (12), magnetizing coil (13), pawl pole (14), stator core (15), stator coil (16), rear end cap (17), rectifier bridge (18), right side double containment deep groove ball bearing (19), actuator (20), back shroud (21) and sealing ring (34)；For electromotor (2) general direction, multidiameter (8) position is defined as the left end direction of system, and back shroud (21) position is defined as system right-hand member direction；Pawl pole (14) is fixed on multidiameter (8), and in the annular knurl place of multidiameter (8) and multidiameter (8) interference fit, pawl pole (14) pass on left the shaft shoulder location of multidiameter (8)；Magnetizing coil (13) is embedded on inner stator (12)；Inner stator (12) right-hand member embeds pawl pole (14), and left end is fixed on drive end bearing bracket (10)；Stator coil (16) is surrounded on outside, pawl pole (14), and the axle center of stator coil (16) is parallel with multidiameter (8)；Stator core (15) is embedded in stator coil (16), and stator core (15) and pawl pole (14) are matched in clearance, and stator core (15) outer surface embeds drive end bearing bracket (10)；Left side double containment deep groove ball bearing (11) is enclosed within the left end step (31) of multidiameter (8), and spacing collar (9) is arranged on the left of the inner ring in left side double containment deep groove ball bearing (11), coordinates with drive end bearing bracket (10) on the left of outer ring；Right side double containment deep groove ball bearing (19) is enclosed within the right-hand member step (32) of multidiameter (8), and its outer ring coordinates with rear end cap (17), and its inner ring passes on left the shaft shoulder location of the right-hand member step (32) of multidiameter (8)；Rear end cap (17) is connected with drive end bearing bracket (10) and back shroud (21) respectively by screw thread；Rectifier bridge (18) and actuator (20) are inserted into the right side facade of rear end cap (17)；Sealing ring (34) is positioned between drive end bearing bracket (10) and spacing collar (9), is sealed by sealing ring (34).

3. the excitatory wind power generation plant of brush-free claw-pole formula according to claim 2, it is characterised in that: fan blade (1) is connected with multidiameter (8) left end by screw thread, and by spacing collar (9) location；Support (3) is connected in rear end cap (17) outside.

4. the excitatory wind power generation plant of brush-free claw-pole formula according to claim 1, it is characterised in that: slip ring assembly (5) includes slip ring rear end cap (22), conventional conductive ring (23), shell (24), slip ring drive end bearing bracket (25), inner position cylinder (26), double containment deep groove ball bearing (27), insulating base (28), nut (29) and location-plate (33)；Inner position cylinder (26) is hollow cylinder, one end is provided with step, within conventional conductive ring (23) centered by positioning tube (26), is connected on inner position cylinder (26) outer wall, conventional conductive ring (23) one end is positioned by the shaft shoulder, and the other end is by nut (29) locking；The step place of inner position cylinder (26) is provided with double containment deep groove ball bearing (27), and double containment deep groove ball bearing (27) outer ring coordinates with slip ring drive end bearing bracket (25), and inner ring is stuck on step surface；Shell (24) one end is connected with slip ring drive end bearing bracket (25), and the other end is connected with slip ring rear end cap (22)；Insulating base (28) is symmetricly set on top and the bottom of conventional conductive ring (23), is connected with shell (24), and location-plate (33) is fixed on shell (24).

5. the excitatory wind power generation plant of brush-free claw-pole formula according to claim 4, it is characterized in that: support (3) coordinates with inner position cylinder (26), and be locked with holding screw (30), fixing seat (7) is connected with slip ring assembly (5) by location-plate (33).