CN100535434C - Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system - Google Patents
Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system Download PDFInfo
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Abstract
一种变速变频风电机励磁控制系统，其中，励磁机通过装置主风轮的主传动轴与发电机主体同轴串装在机壳内；永磁外转子以与励磁机内转子呈相对旋转的构造、并呈相对发电机定子旋转的构造设置；主、副风轮上设置可将转速的信号传送到机组集控装置的主风轮转速测量装置、副风轮转速测量装置，偏航控制器与机组集控装置以控制主风轮下风向旋转的方式联结；主风轮与副风轮分别配置调节桨距角的主风轮变桨距调节机构、副风轮变桨距调节机构，主、副风轮变桨距调节机构与机组集控装置均以控制风轮变桨距调节机构变桨的方式联结；本案采用无刷双馈电机转子和旋转永磁外转子双转子结构，实现机组变速变频运行。
A variable-speed variable-frequency wind generator excitation control system, wherein the exciter is coaxially installed in the casing through the main transmission shaft of the main wind wheel and the main body of the generator; the permanent magnet outer rotor rotates relative to the inner rotor of the exciter structure, and is set in a structure that rotates relative to the stator of the generator; the main and auxiliary wind rotors are equipped with a main wind rotor speed measurement device, an auxiliary wind rotor speed measurement device, and a yaw controller that can transmit the speed signal to the centralized control device of the unit It is connected with the centralized control device of the unit to control the downwind rotation of the main wind rotor; , the auxiliary wind rotor pitch adjustment mechanism and the centralized control device of the unit are connected by controlling the wind rotor pitch adjustment mechanism to change the pitch; this case adopts a dual-rotor structure of a brushless double-fed motor rotor and a rotating permanent magnet outer rotor to realize the unit Variable speed and frequency conversion operation.
Description
Technical field
The present invention relates to wind-driven generator, particularly have the exciter control system of series connection permanent-magnet variable-speed variable frequency excitation double-rotor pneumatic electric machine.
Background technique
Known techniques such as Chinese patent CN200510022771.1 disclose a kind of speed changing, frequency converting method of wind-power electricity generation, be characterized in, at first the rotating speed with the wind energy conversion system rotor passes through the step-up gear speedup, the input shaft of the input power input differential permanent-magnet motor that then speed change is produced, carry out power dividing or interflow by the box of tricks of differential permanent-magnet motor and produce the staor winding that power circuit enters differential permanent-magnet motor and electrical network is realized the constant speed variable-frequency power generation, to improve the generating efficiency of power generation system through feeder line.
And for example Chinese patent CN200410003089.3 discloses a kind of MW level and has directly driven the permanent-magnetic outer rotor synchro wind generator, and it adopts multipole outer-rotor structure.This generator comprises stationary axle, rotatingshaft, coil winding, permanent magnetic steel, iron core, stator and external rotor, wherein rotatingshaft by Bearing Installation on stationary axle, stator is installed on the stationary axle by stator support, external rotor is installed on the rotatingshaft by rotor field spider, can be provided with axial cooling ventilation duct between winding coil and stator support; Windward side between external rotor and stator is provided with safety cover.Because number of poles is many, its rotating speed is very low, thereby does not need step-up gear supporting, can directly drive generating; Generator does not have the cooling fan of carrying or adorns cooling system outward.
Known wind power generating set is produced wind wheel by gear-box under the wind-force effect transmission of power is given generator and is made it obtain corresponding rotating speeds; Usually the rotating speed of wind wheel is very low, does not far reach the high-speed engine desired rotating speed that generates electricity, and must be used for realization by the speedup of gear-box gear pair; And the work condition environment of wind-driven generator unit is generally very poor, and the gear-box fault that takes place frequently is a common occurrence.
The product reliability that known techniques is made is poor, the maintenance cost height, and unit efficiency is low.Industry wishes to utilize the speed changing, frequency converting range of operation of the brushless structure and the broad of brushless double-fed machine technology, in conjunction with being installed on the technical advantage of oppositely two phoenix wheels of wind rotation efficiently being utilized wind energy on the double rotor transmission shaft mutually, remove the speed changing, frequency converting operation that gear-box and complicated control system realize generator set.
Summary of the invention
Problem to be solved by this invention is, overcomes the above-mentioned defective that the technology of taking over exists, and a kind of variable speed variable frequency pneumatic electric machine exciter control system is provided.
This case technical solution problem can adopt following technology case to realize, according to a kind of variable speed variable frequency pneumatic electric machine exciter control system provided by the invention, comprise the generator main body, the rotor of this generator is the structure setting of relative generator unit stator rotation by main drive shaft, it is characterized in that exciter is contained in the casing with the coaxial string of generator main body by the main drive shaft of device main air wheel; Permanent-magnetic outer rotor is to be the structure setting that counterrotating structure and this permanent-magnetic outer rotor are relative generator unit stator rotation with the exciter internal rotor; Secondary wind wheel be can drive permanent-magnetic outer rotor construction device on counter drive shaft; Become the coaxial connection of mode of mutual rotation with main drive shaft by the transmission of main air wheel by the counter drive shaft of secondary wind wheel transmission;
Be provided with on the major and minor wind wheel signal of rotating speed be sent to the main air wheel speed measuring device of unit centralized control equipment, secondary wind speed round measuring device, the port that the unit centralized control equipment also has the port that connects with the wind speed detection device, connect with the wind direction detection device, with the port of upper-position unit transmission data;
Yawer and unit centralized control equipment connect in the mode of wind direction rotation under the control main air wheel; Described main air wheel is taken turns variable propeller pitch adjusting mechanism, secondary wind wheel variable propeller pitch adjusting mechanism with the main air of secondary wind wheel difference configuration adjustment propeller pitch angle, and described major and minor wind wheel variable propeller pitch adjusting mechanism and unit centralized control equipment all connect in the mode of controlling major and minor wind wheel variable propeller pitch adjusting mechanism change oar;
Voltage output end at generator connects be incorporated into the power networks frequency variator and boosting transformer successively, connects with external power grid again; The voltage check device that connects at be incorporated into the power networks between frequency variator and the boosting transformer configuration successively and unit centralized control equipment, the detecting device for output current that connects with the unit centralized control equipment; The unloaded detection device that connects at generator and be incorporated into the power networks between the frequency variator configuration and unit centralized control equipment;
Leave the default spacing of avoiding secondary wind wheel and tower collision between described secondary wind wheel and the described exciter, described default spacing is determined this spacing by the number of degrees at the main air wheel elevation angle.
This case technical solution problem can also adopt following technical measures further to realize,
Aforesaid variable speed variable frequency pneumatic electric machine exciter control system, wherein, described major and minor wind wheel variable propeller pitch adjusting mechanism structure is identical, and it is formed with change oar control gear by becoming the oar servomechanism, and described unit centralized control equipment connects by described change oar control gear and described change oar servomechanism; Dispose secondary wind wheel propeller pitch angle measuring device, main air wheel propeller pitch angle measuring device in described main air wheel and the secondary wind wheel respectively.
Aforesaid variable speed variable frequency pneumatic electric machine exciter control system, wherein, described major and minor wind wheel variable propeller pitch adjusting mechanism is driven by actuating motor (M38, M28); Described change oar servomechanism and unit centralized control equipment are according to the variation of propeller pitch angle main air wheel and secondary wind wheel are carried out the electric connection of mode of rotational speed regulation; Described main air impeller blade wind sweeping area is greater than 2 times of the blade wind sweeping area of secondary wind wheel, and described main air impeller blade wind sweeping area is less than 5 times of the blade wind sweeping area of secondary wind wheel.
Aforesaid variable speed variable frequency pneumatic electric machine exciter control system, wherein, wind direction was to the rotary configured setting of wind under described main air wheel was, and described secondary wind wheel is upwind oppositely to the rotary configured setting of wind, and break is arranged between generator ' s cover and the described secondary wind wheel wheel hub; 3 times of the blade wind sweeping area that described main air impeller blade wind sweeping area is secondary wind wheel.
Aforesaid variable speed variable frequency pneumatic electric machine exciter control system, wherein, described generator unit stator winding number of pole-pairs Pg is set to greater than permanent-magnetic outer rotor number of pole-pairs Pe, described main air wheel (3) has the generator unit stator (16) of Pg number of pole-pairs relatively with the rotation of Nzr speed under the wind-force effect, and the main air wheel speed satisfies following relation configuration:
Wherein: Nzr represents the main air wheel speed; Pg represents the staor winding number of pole-pairs; Pe represents the number of pole-pairs of permanent-magnetic outer rotor (41); Fg represents stator frequency; Fe represents the permanent-magnetic outer rotor reduced frequency;
Described generator unit stator winding number of pole-pairs is 3 times a permanent-magnetic outer rotor number of pole-pairs; Described exciter internal rotor winding number of pole-pairs is set to Pe to the utmost point; Described generator amature winding number of pole-pairs is set to Pg to the utmost point; Described exciter internal rotor winding is connected by connecting line negative-phase sequence between rotor with the generator amature winding;
The wind-powered electricity generation machine secondary wind wheel (2) be configured on the counter drive shaft, this pair wind wheel drives permanent-magnetic outer rotor with the rotation of Ne speed, and the permanent-magnetic outer rotor reduced frequency satisfies following relation:
Be configured to the relative main air wheel of Nzre rotating speed permanent-magnetic outer rotor counterrotating, that have the Pe number of pole-pairs on counter drive shaft, the rotating speed of the relative exciter internal rotor rotation of permanent-magnetic outer rotor satisfies following relation: Nzre=Nzr+Ne
Wherein: Nzre represents the rotating speed of the relative exciter internal rotor rotation of permanent-magnetic outer rotor.
Aforesaid variable speed variable frequency pneumatic electric machine exciter control system, wherein, the drive structure device of the relative main air wheel of described secondary wind wheel counterrotating is on counter drive shaft, and this pair wind wheel is upwind wind is installed, the main air wheel is assemblied on the main drive shaft axle, and wind direction was to the setting of wind rotational structure under this main air wheel was.
Aforesaid variable speed variable frequency pneumatic electric machine exciter control system, wherein, described major and minor transmission shaft all has the hollow via-hole of preset diameters, and described major and minor transmission shaft is by being configured in bearing on the generator and the bearings on the exciter.
The present invention compared with prior art has significant advantage and beneficial effect.By above technological scheme as can be known, the present invention has following advantage at least under the structural arrangements of excellence:
The two wind wheels of this case design are worked simultaneously, and wind energy utilization is than improving 15%-25% with capacity list wind wheel unit.Brushless double-fed machine rotor and rotary permanent-magnet external rotor dual-rotor structure are adopted in this case, realize the operation of unit speed changing, frequency converting, quite reduce half, thereby shorten the generator diameter space greatly, make things convenient for the equipment transportation, reduce unit weight with capacity single rotor power generator electrode logarithm; The configuration of two wind wheel structure settings of this case and Yawing mechanism makes the simpler, reliable of set yaw control change; This case unit can realize that speed changing, frequency converting operation, feather regulate, and the following this case of the rated wind speed pair more single wind wheel speed changing, frequency converting of wind wheel generation unit unit wind energy utilizations increase, and non-gear box, can realize directly driving the worry of no slip ring fault; The present invention compared with prior art has significant contribution and progress, is really to have novelty, creativeness, practical good technology.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is an apoplexy electric machine structure schematic representation of the present invention;
Fig. 2 is an exciting winding wiring construction schematic representation of the present invention;
Fig. 3 is a speed changing, frequency converting exciter control system structural representation of the present invention;
Fig. 4 is a speed changing, frequency converting exciter control system working principle block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to embodiment provided by the invention, structure, feature and effect thereof, describe in detail as after.
Shown in Fig. 1-4, a kind of serial double-rotor wind-powered electricity generation machine M comprises the generator main body 1 that is packed on the base 10, generator unit stator 16 is installed in the motor casing 11, and motor casing 11 has end cap 111, and generator amature 14 is the structure setting of relative stator 16 rotations by main drive shaft 13, wherein
Exciter 4 is contained in the casing by main drive shaft and the coaxial string of generator main body; Permanent magnet 43 is installed on the yoke 42 in the permanent-magnetic outer rotor housing 410, constitutes the permanent-magnetic outer rotor 41 of exciter, this permanent-magnetic outer rotor by link 46 to be counterrotating structure setting with exciter internal rotor 45; Described permanent magnet 43 becomes configuration set, its number of pole-pairs and exciter internal rotor number of pole-pairs coupling by known techniques; Permanent-magnetic outer rotor is relative exciter internal rotor rotation, the also structure setting of generator unit stator rotation relatively;
Thus, the exciter internal rotor of generator amature and this rotor coaxial transmission rotation forms the tandem rotor structure of generator, and be double rotor structure with permanent-magnetic outer rotor, thereby can realize the operation of unit speed changing, frequency converting, quite reduce 1/3-1/2 at least with capacity single rotor power generator electrode logarithm, thereby can shorten the generator diameter, further reduce motor weight;
By known techniques, will by the counter drive shaft 12 of secondary wind wheel transmission with by 13 one-tenths coaxial installations of the bind mode that can rotate mutually of main drive shaft of main air wheel transmission, by counter drive shaft with the transmission of power of secondary wind wheel to permanent-magnetic outer rotor;
The drive structure device that secondary wind wheel 2 relative main airs wheels oppositely rotate wind is at the axle body end of counter drive shaft 12, this pair wind wheel is upwind with known techniques by the F2 direction by its wheel hub 21 wind is installed, leave the default spacing L that avoids secondary wind wheel and tower collision between secondary wind wheel and the exciter, can determine the reservation spacing that secondary wind wheel and pylon do not collide by the number of degrees at the main air wheel elevation angle.
Main air wheel 3 is assemblied in main drive shaft 13 axle body ends, and wind direction was to the setting of wind rotational structure under this main air wheel was by the F3 direction with known techniques by its wheel hub 31.
A kind of variable speed variable frequency pneumatic electric machine exciter control system comprises aforementioned wind-powered electricity generation machine M, and the main air wheel 3 of wind-powered electricity generation machine is configured on the main drive shaft, and the stator 16 that has the Pg number of pole-pairs under the wind-force effect relatively is with the rotation of Ner speed, and the main air wheel speed satisfies following relation:
Wherein: Nzr represents the main air wheel speed; Pg represents the staor winding number of pole-pairs; Pe represents the number of pole-pairs of permanent-magnetic outer rotor 41; Fg represents stator frequency; Fe represents the permanent-magnetic outer rotor reduced frequency;
Described exciter internal rotor 45 winding numbers of pole-pairs are set to Pe to the utmost point; Described generator amature 14 winding numbers of pole-pairs are set to Pg to the utmost point; Described exciter internal rotor winding is connected by 123 negative-phase sequences of connecting line between rotor with the generator amature winding; Described staor winding number of pole-pairs Pg is set to greater than permanent-magnetic outer rotor number of pole-pairs Pe, and described staor winding number of pole-pairs can be 3 times a permanent magnetism internal rotor number of pole-pairs;
The wind-powered electricity generation machine secondary wind wheel 2 be configured on the counter drive shaft, this pair wind wheel drive permanent-magnetic outer rotor with the relative main air wheel of Ne speed oppositely to the wind rotation, and the permanent-magnetic outer rotor reduced frequency satisfies following relation:
Be configured to the permanent-magnetic outer rotor that the Nzre rotating speed is counterrotating, have the Pe number of pole-pairs on counter drive shaft, the rotating speed of the relative exciter internal rotor rotation of permanent-magnetic outer rotor satisfies following relation:
Nzre＝Nzr+Ne
Wherein: Nzre represents the rotating speed of the relative exciter internal rotor rotation of permanent-magnetic outer rotor;
Be provided with on the aforesaid major and minor wind wheel and the signal of rotating speed can be sent to the main air wheel speed measuring device G of unit centralized control equipment 5, secondary wind speed round measuring device G1, the wind speed that the port D1 that connects via the wind speed detection device records and by the wind speed round that rotary speed measurer records is transferred to unit centralized control equipment 5; Unit centralized control equipment and yawer 6 connect, and control main air wheel wind direction down rotates wind, and yawer 6 can be installed on the engine room inside 101 under the base;
Described main air wheel is taken turns variable propeller pitch adjusting mechanism 38, secondary wind wheel variable propeller pitch adjusting mechanism 28 with the main air of the hub portion difference configuration adjustment propeller pitch angle of secondary wind wheel, this main air wheel, secondary wind wheel variable propeller pitch adjusting mechanism and the 5 electric connections of unit centralized control equipment are sent the instruction of change oar by 5 pairs of main air wheels of unit centralized control equipment variable propeller pitch adjusting mechanism 38; Dispose secondary wind wheel propeller pitch angle measuring device G28, main air wheel propeller pitch angle measuring device G38 in described main air wheel and the secondary wind wheel respectively;
Described major and minor wind wheel variable propeller pitch adjusting mechanism structure is identical, it is made up of change oar servomechanism 381,281 that drives with actuating motor M38, M28 and change oar control gear 382,282, and described unit centralized control equipment 5 is by becoming oar control gear 382,282 and connecting with the change oar servomechanism 381,281 that actuating motor M38, M28 drive; This change oar servomechanism changes the rotational speed regulation of carrying out main air wheel and secondary wind wheel according to detected propeller pitch angle under the control of unit centralized control equipment 5, realize that wind direction rotates wind under the main air wheel, and secondary wind wheel upwind is rotated to wind oppositely; Break 15 is arranged between generator ' s cover and the secondary wind wheel wheel hub;
Voltage output end at generator connects be incorporated into the power networks frequency variator 7 and boosting transformer 8 successively, connects with external power grid W again; The voltage measuring apparatus G4 that connects at be incorporated into the power networks between frequency variator and the boosting transformer configuration successively and unit centralized control equipment 5, the detecting device for output current G3 that connects with the unit centralized control equipment; The unloaded detection device G5 that connects at generator M and be incorporated into the power networks between the frequency variator configuration and unit centralized control equipment; The unit centralized control equipment also have the port D1 that connects with wind speed detection device (not shown), with wind direction detection device (not shown) connect port D2, with the port D3 of upper-position unit transmission data; Described major and minor wind wheel blade is pressed known technology mode device on the wind wheel wheel hub, described main air impeller blade wind sweeping area is greater than blade wind sweeping area 2-5 times of secondary wind wheel, especially be that 3 times of left and right sides of blade wind sweeping area of secondary wind wheel are preferable with main air impeller blade wind sweeping area, described wind sweeping area is the area that the wind wheel rotation forms;
To sum up, the wind-powered electricity generation machine of two wind wheel organizations, wherein larger-diameter main air wheel is used for generating, secondary wind wheel than minor diameter is used for regulating the double generating of excitation frequency, the two on same axis, mutually opposite spin, yawer be responsible for controlling the main air wheel down wind direction wind is rotated main force's generating; Oppositely to the wind rotation, auxiliary power generation improves usefulness to secondary wind wheel upwind greatly.
The voltage output end of described generator be incorporated into the power networks configurations such as frequency variator can be regulated generator output voltage, with after date softly be incorporated into the power networks, soft parallel off when shutting down, can effectively reduce the impact of the wattless current that is incorporated into the power networks, guarantee unit safety operation; When generator reached rated output power, power of the assembling unit factor was controlled at operation about cos θ=1; When the generator active power of output hour, the lagging reactive power of unit output cos θ＜1; When generator speed was lower than specified minimum speed or generated output power and is higher than maximum output, off-the-line generator from the electrical network was finished soft off-the-line by configurations such as the frequency variators that is incorporated into the power networks.
A kind of speed changing, frequency converting excitation control method:
1). be configured in the stator 16 that has the Pg number of pole-pairs under the wind-force effect relatively main air wheel 3 on the main drive shaft 13, and the main air wheel speed satisfies following relation with the rotation of Nzr speed:
Wherein: Nzr represents the main air wheel speed; Pg represents the staor winding number of pole-pairs; Pe represents the number of pole-pairs of permanent-magnetic outer rotor 41; Fg represents stator frequency; Fe represents the permanent-magnetic outer rotor reduced frequency;
2). the secondary wind wheel drive permanent-magnetic outer rotor in the configuration of counter drive shaft 12 ends oppositely rotates wind with the relative main air wheel of Ne speed, and the permanent-magnetic outer rotor reduced frequency satisfies following relation:
3). be configured to the relative main air wheel of Nzre rotating speed oppositely to wind permanent-magnetic outer rotor rotation, that have the Pe number of pole-pairs on counter drive shaft, the rotating speed of the relative exciter internal rotor rotation of permanent-magnetic outer rotor satisfies following relation: Nzre=Nzr+Ne
Wherein: Nzre represents the rotating speed of the relative exciter internal rotor rotation of permanent-magnetic outer rotor;
4). described exciter internal rotor 45 winding numbers of pole-pairs are set to Pe to the utmost point; Described generator amature 14 winding numbers of pole-pairs are set to Pg to the utmost point; Described exciter internal rotor winding is connected by 123 negative-phase sequences of connecting line between rotor with the generator amature winding;
5). when the main air wheel is lower than rated speed, the unit centralized control equipment carries out main air vane tip Transmission Ratio Control, wind speed that the port D1 that connects via the wind speed detection device records and the main air wheel speed that records by rotary speed measurer G, be transferred to unit centralized control equipment 5, warp is right with the main air vane tip speed ratio numeric ratio that the unit centralized control equipment is preset, calculate the adjusting numerical value of propeller pitch angle, compare with the propeller pitch angle value of main air wheel propeller pitch angle measuring device G38 collection again, send the instruction of change oar by 5 pairs of main airs wheels of unit centralized control equipment variable propeller pitch adjusting mechanism 38;
By unit centralized control equipment 5 according to
Relation is carried out speed Control to major and minor wind wheel; Can realize that thus the main air wheel moves with its best tip speed ratio, reaches the purpose that makes full use of wind energy below rated speed;
When the main air wheel reached rated speed, the unit centralized control equipment carried out power control to generator; The output voltage of the output current of the generator that records via detecting device for output current G3 and the generator that records via output voltage measuring device G4 is transferred to unit centralized control equipment 5, and the generated output power value that calculates via this unit centralized control equipment is right with default rated power numeric ratio; When meeting predefined value, wind speed that the port D1 that is connect by the wind speed detection device that the unit centralized control equipment will collect records and the main air wheel rated speed that records by rotary speed measurer G, calculate the adjusting numerical value of the propeller pitch angle of main air wheel rated speed under this wind speed, compare with the propeller pitch angle value of main air wheel propeller pitch angle measuring device G38 collection again, send the instruction of change oar by 5 pairs of main airs wheels of unit centralized control equipment variable propeller pitch adjusting mechanism 38; Can realize that thus the main air wheel moves, and prevents the generator overload under firm power;
6). when secondary wind wheel is lower than rated speed, the unit centralized control equipment carries out secondary wind wheel tip speed ratio control, wind speed that the port D1 that connects via the wind speed detection device records and the secondary wind speed round that records by secondary wind speed round measuring device G1 are transferred to unit centralized control equipment 5; Warp is right with the secondary wind wheel tip speed ratio numeric ratio that the unit centralized control equipment is preset, calculate the adjusting numerical value of propeller pitch angle, compare with the propeller pitch angle value of secondary wind wheel propeller pitch angle measuring device G28 collection again, main air wheel variable propeller pitch adjusting mechanism 28 is sent the instruction of change oar by the unit centralized control equipment; Can realize that thus secondary wind wheel moves with its best tip speed ratio, reaches the purpose that makes full use of wind energy below rated speed;
When secondary wind wheel reached rated speed, the unit centralized control equipment carried out power control to generator; The output voltage of the output current of the generator that records via detecting device for output current G3 and the generator that records via output voltage measuring device G4 is transferred to unit centralized control equipment 5, and the generated output power value that calculates via unit centralized control equipment 5 is right with default rated power numeric ratio; When meeting predefined value, wind speed that the port D1 that is connect by the wind speed detection device that unit centralized control equipment 5 will collect records and the secondary rated rotation speed of rotor that records by rotary speed measurer G, calculate the adjusting numerical value of the propeller pitch angle of secondary rated rotation speed of rotor under this wind speed, compare with the propeller pitch angle value of secondary wind wheel propeller pitch angle measuring device G28 collection again, send the instruction of change oar by 5 pairs of secondary wind wheel variable propeller pitch adjusting mechanisms 28 of unit centralized control equipment; Can realize that thus the main air wheel moves, and prevents the generator overload under firm power; Make generator smaller or equal to rated speed the time, keep the output voltage frequency of generator at 5Hz-50Hz scope internal speed-changing converting operation, especially with the output voltage frequency of generator in 10Hz-20H the best, by frequency variator 7 rectifications and the inversion of being incorporated into the power networks, generator is incorporated into the power networks with the output voltage frequency of 50Hz all the time, has realized the speed changing, frequency converting operation of wind-powered electricity generation unit indirectly;
7). staor winding number of pole-pairs Pg is set greater than permanent-magnetic outer rotor number of pole-pairs Pe, describedly makes staor winding number of pole-pairs and p-m rotor number of pole-pairs close being Pg=3Pe, making its major and minor wind speed round satisfy Ne=2Nzr have under this state
Therefore,, realize the operation of unit speed changing, frequency converting, quite reduce half with capacity single rotor power generator electrode logarithm with brushless double-fed machine rotor and rotary permanent-magnet external rotor dual-rotor structure.
Thereby, the two rotor windings of connecting during work have identical power frequency, mutual reciprocal rotating magnetic field, generator amature winding excitation field connect relatively rotor rotational speed Nzre and main air wheel shaft mechanical rotation speed Nzr stack, cooperate, form the speed changing, frequency converting excitation field of generator unit stator, this rotating magnetic field produces the 5Hz-50Hz electromotive force in to the staor winding of the utmost point having Pg, realizes variable-speed operation, the frequency conversion transmission of electricity of generator set by the frequency variator that is incorporated into the power networks.
8). the main air wheel that is assemblied on the transmission shaft 13 is relatively oppositely to wind rotation configuration with the relative opposite direction adjusting of the secondary wind wheel 2 that is assemblied in counter drive shaft by the blade pitch angle.Make full use of the counterrotating wake energy of secondary wind wheel back, wind energy utilization is than improving 15%-25% with capacity list wind wheel unit.
9). in the time of between rated speed that permanent-magnet variable-speed variable frequency excitation double-rotor pneumatic electric machine is incorporated into the power networks, the main air wheel speed is being preset when connecting and the minimum speed, secondary wind wheel oppositely rotates wind by pre-conditioned under unit centralized control equipment 5 is regulated.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101301853A CN100535434C (en) | 2006-12-14 | 2006-12-14 | Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101301853A CN100535434C (en) | 2006-12-14 | 2006-12-14 | Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101004164A CN101004164A (en) | 2007-07-25 |
| CN100535434C true CN100535434C (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101301853A Expired - Fee Related CN100535434C (en) | 2006-12-14 | 2006-12-14 | Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system |
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| CN (1) | CN100535434C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603511B (en) * | 2009-07-16 | 2011-07-27 | 广州雅图风电设备制造有限公司 | Vertical wind driven generator |
| CN102769344B (en) * | 2012-07-20 | 2014-09-03 | 林贵生 | Direct drive type motor or generator capable of steplessly converting torque and regulating speed |
-
2006
- 2006-12-14 CN CNB2006101301853A patent/CN100535434C/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 变速恒频风力发电机最大功率跟踪控制策略的研究. 王志华，李亚西，赵栋利，郭金东，许洪华.可再生能源，第2期. 2005 * |
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| Publication number | Publication date |
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| CN101004164A (en) | 2007-07-25 |
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