CN103615359B - The electricity of lifting-force type vertical-axis wind power generator group drives start up system and starting method - Google Patents
The electricity of lifting-force type vertical-axis wind power generator group drives start up system and starting method Download PDFInfo
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- CN103615359B CN103615359B CN201310705508.7A CN201310705508A CN103615359B CN 103615359 B CN103615359 B CN 103615359B CN 201310705508 A CN201310705508 A CN 201310705508A CN 103615359 B CN103615359 B CN 103615359B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
The electricity of vertical axis aerogenerator group drives start up system and a method, and it comprises electricity and drives controller; Master controller; Air velocity transducer, the first recloser and the second recloser and power supply.The minimum wind speed vmin of generating can be cut when extraneous wind speed v is greater than vertical axis aerogenerator group and is less than the highest operating air velocity vmax of vertical axis aerogenerator group, and the rotating speed n of vertical axis aerogenerator group be less than the vertical axis aerogenerator group when this minimum wind speed vmin can keep on the go generating minimum speed nmin time, first recloser closes, magneto alternator is rotated, thus drives vertical axis aerogenerator group to accelerate to rotate; Now magneto alternator is equivalent to motor.After the rotating speed n of vertical axis aerogenerator group is greater than nmin, cut off the first recloser immediately, closed second recloser, magneto alternator is in generating state and transmits electricity to power supply.
Description
Technical field
The present invention is relevant with lifting-force type vertical-axis wind power generator group, espespecially a kind of system and method that can lifting-force type vertical-axis wind power generator group be driven under lower gustiness to start.
Background technique
At present, along with the pressure of energy and environment increases, this clean environment firendly of wind energy, and the energy of low cost more and more comes into one's own, and along with the development of technology, vertical axis aerogenerator group has low noise because of it, needs to rotate advantages such as wind along with wind direction unlike the impeller of horizontal axis wind-driven generator, is subject to people and more and more pays close attention to.
Wherein lifting-force type vertical-axis wind power generator group is widely used owing to having higher wind energy utilization efficiency.The lifting-force type vertical-axis wind power generator group of greater efficiency generally has higher tip-speed ratio and lower solidity.Here, tip-speed ratio refers to the linear velocity of blade and the ratio of wind speed; Solidity refers to the vertical plane sum of all blades on blade rotary swept surface and the ratio of blade rotary swept area.
But the solidity of the lifting-force type vertical-axis wind power generator group of greater efficiency is general all lower, its aerodynamic characteristic determines under a certain wind speed, if its rotating speed is lower than below the rotating speed that can carry out peak output conversion during certain speed stage, it has a minimum wind-drive torque.Particularly at a lower wind speed, this minimum driving torque is likely lower than surface friction drag torque and the generator electromagnetic resistance torque sum of all bearings of this speed stage wind-driven generator group wind-wheel connection, cause the wind wheel of wind power generating set can not cross this comparatively slow-speed of revolution section, thus the Wind resource change of greater efficiency can not be realized.So, lower solidity vertical axis aerogenerator group when low wind speed its wind wheel can not state of rest from the beginning start progressively to accelerate to higher speed under the driving of wind-force after obtain higher driving torque more wind energy is converted to mechanical energy.If the External Force Acting not except wind-force, wind power generating set needs under the effect of a higher wind speed vs, could voluntarily from static Acceleration of starting to higher rotating speed after continue generator operation.As long as but in fact wind speed is on a certain minimum windspeed vmin, and have the external force except wind-force to drive wind power generating set accelerated service to exceeding a certain minimum operation rotating speed nmin, vertical axis aerogenerator can generate electricity in continuous running, and vmin will much smaller than vs.Therefore, do not take the threshold wind velocity of the lower solidity lifting-force type vertical-axis wind power generator group of driving measure higher, its application obtains restriction.
In order to head it off, some lifting-force type vertical-axis wind power generator groups adopt the blade of higher solidity, and its individual blade chord length is longer, and blade number is more, just can be able to start to make vertical axis aerogenerator group under low wind.But because its blade material increase makes blade cost higher, during high wind, cross section is comparatively large windward, and the wind-force of the substantially horizontal that blade is subject to makes a concerted effort to increase, and causes shaft tower and given tensile load to increase, thus making the expenditure of construction on shaft tower and basis increase, economic benefit is not good.
In addition, some lifting-force type vertical-axis wind power generator groups are also had to adopt generator having no iron core, make the electromagnetic resistance torque of generator less, so total drag torque of lifting-force type vertical-axis wind power generator group also reduces, thus just can be able to start under low speed wind state.But generator having no iron core efficiency is lower, and capacity is little, and cost is high, heat radiation difficulty, reliability is poor, limits the overall generating capacity of wind power generating set.
Therefore, how to make lifting-force type vertical-axis wind power generator group can overcome drag torque and start under lower gustiness, need by the industry problem of solution badly.
Summary of the invention
Main purpose of the present invention is to provide a kind of system and method driving lifting-force type vertical-axis wind power generator group to start under lower gustiness.This start up system and method can make the threshold wind velocity of lifting-force type vertical-axis wind power generator group obviously reduce, and also can overcome drag torque and start in low speed wind area.
For achieving the above object, the present invention is by the following technical solutions:
The electricity of lifting-force type vertical-axis wind power generator group drives a start up system, and based on the magneto alternator in lifting-force type vertical-axis wind power generator group, it comprises:
One electricity drives controller, and described electricity drives the power supply that the controller magneto alternator and be electrically connected respectively in lifting-force type vertical-axis wind power generator group has charging and function of supplying power, is connected into a starting circuit; Described electricity drives controller and utilizes described power supply to rotate as input queued switches magneto alternator;
One first recloser, is connected on described magneto alternator and described electricity drives between controller;
One master controller, described master controller is connected between the ac output end of described magneto alternator and described power supply, forms an electricity-generating circuit; The Ac that described magneto alternator sends is through the backward described power supply transmission of electricity of described master controller conversion;
One second recloser is connected on electricity-generating circuit, electrical connection magneto alternator and master controller;
Described master controller is electrically connected described first recloser and described second recloser respectively; To control the closed and disconnected of described first recloser and described second recloser;
One air velocity transducer, described air velocity transducer is electrically connected described master controller, and wind velocity signal is sent to described master controller;
When extraneous wind speed v be greater than vertical axis aerogenerator group can cut generating minimum wind speed vmin and lower than the highest operating air velocity of vertical axis aerogenerator group, and the rotating speed n of vertical axis aerogenerator group be less than the vertical axis aerogenerator group when this minimum wind speed vmin can keep on the go generating minimum speed nmin time, first recloser described in described main controller controls closes, described electricity drives controller and utilizes described power supply to rotate as magneto alternator described in input queued switches, thus drive vertical axis aerogenerator group to accelerate to rotate, the rotating speed n of vertical axis aerogenerator group is made to be greater than nmin, now, described magneto alternator is equivalent to permanent magnet motor,
After the rotating speed n of vertical axis aerogenerator group is greater than nmin, described master controller cuts off described first recloser immediately, closed described second recloser, under the drive of vertical axis aerogenerator group, magneto alternator rotates, now magneto alternator is in generating state, and the Ac that described magneto alternator sends converts the transmission of electricity of backward power supply through described master controller.
In a preferred embodiment, described power supply is the storage battery that connects from net type wind power generating set or described power supply is the AC network that grid-connected wind power unit connects.
In a preferred embodiment, also include the rotor-position sensor be arranged on the stator of magneto alternator, described rotor-position sensor is electrically connected this electricity and drives controller; Described magneto alternator adopts the control mode drived control magneto alternator with position transducer to rotate when electricity drives startup.
In a preferred embodiment, described magneto alternator is three-phase permanent synchronous generator; Described rotor-position sensor is Hall type position transducer, and this Hall type position transducer is 3, is distributed in the stator iron core surface of three-phase permanent synchronous generator with 120 degree of electrical angles.
In a preferred embodiment, described magneto alternator adopts magneto alternator described in the control mode drived control of position-sensor-free to rotate when electricity drives startup.
In a preferred embodiment, described first recloser and the second recloser are contactor or relay.
In a preferred embodiment, when described power supply is storage battery, described electricity drives controller and comprises a DC/AC inverter circuit and an electricity drives controller controling circuit, this DC/AC inverter circuit is electrically connected described magneto alternator by described first recloser, this DC/AC inverter circuit electrical connection electricity drives controller controling circuit, described DC/AC inverter circuit electrical connection storage battery, described electricity drives the converting direct-current power into alternating-current power that storage battery is provided by DC/AC inverter circuit by controller, drives magneto alternator to rotate; Or
When described power supply is AC network, described electricity drives controller and comprises an AC/AC drive circuit and an electricity drives controller controling circuit, this AC/AC drive circuit is electrically connected described magneto alternator by described first recloser, this AC/AC drive circuit electrical connection electricity drives controller controling circuit, described AC/AC drive circuit is electrically connected described AC network, described electricity drives controller and converts variable-frequency variable-voltage Ac to by the industrial-frequency alternating current that AC network provides by AC/AC drive circuit, drives magneto alternator to rotate.
In a preferred embodiment, when described power supply is storage battery, described master controller comprises an AC/DC rectification circuit, a main controller controls circuit and a DC/DC DC transfer circuit; The AC rectification that described magneto alternator sends, by the second recloser electrical connection magneto alternator, is become direct current by described AC/DC rectification circuit; DC power conversion after AC/DC rectifier circuit rectifies, between described AC/DC rectification circuit and described storage battery, is can carry out after the controlled direct current of charge power charge in batteries storage battery by described DC/DC DC transfer circuit; Described air velocity transducer, the first recloser, the second recloser are electrically connected main controller controls circuit respectively; Or
When described power supply is AC network, described master controller comprises an AC/AC convertor circuit and a main controller controls circuit; Described AC/AC convertor circuit is electrically connected described magneto alternator by the second recloser, between described second recloser and described AC network, transmit electricity to AC network after the industrial-frequency alternating current of the variable-frequency variable-voltage convert alternating current Cheng Kexiang AC network transmission of electricity that described magneto alternator is sent; Described air velocity transducer, the first recloser, the second recloser are electrically connected main controller controls circuit respectively.
In a preferred embodiment, described rotor-position sensor is electrically connected the control circuit that described electricity drives controller inside, is supplied to desired location signal when described electricity drives controller drive motor.
The electricity that the electricity being applied to above-mentioned lifting-force type vertical-axis wind power generator group drives start up system drives a starting method, and it comprises following steps:
The first step, starts, by air velocity transducer, measures extraneous wind speed;
Second step, the minimum wind speed vmin of generating can be cut when extraneous wind speed v is greater than vertical axis aerogenerator group and is less than the highest operating air velocity of vertical axis aerogenerator group, and the rotating speed n of vertical axis aerogenerator group be less than the vertical axis aerogenerator group when this minimum wind speed vmin can keep on the go generating minimum speed nmin time, described master controller disconnects described second recloser, closed described first recloser, starting circuit works, electricity drives controller and utilizes described power supply to rotate as magneto alternator described in input queued switches, and then, vertical axis aerogenerator group is driven to rotate to higher rotation speed,
3rd step, when the rotating speed n of vertical axis aerogenerator group is greater than nmin, disconnect described first recloser, closed described second recloser, incision electricity-generating circuit, now, described magneto alternator is in generating state, and described magneto alternator is through the backward described power supply transmission of electricity of described group controller conversion;
4th step, after extending a period of time, returns the first step, repeats above-mentioned steps.
Beneficial effect of the present invention is: drive start up system by a kind of lifting-force type vertical-axis wind power generator group of the present invention electricity and method can make lifting-force type vertical-axis wind power generator group threshold wind velocity obviously reduce, keep the pneumatic efficiency that lifting-force type vertical-axis wind power generator group is higher when higher wind simultaneously, greatly can increase the generated energy in Di Feng district.Also can adopt the blade of lower solidity, thus lifting-force type vertical-axis wind power generator group efficiency is improved, reduce wind wheel cost, and because wind-receiving face is little, wind loading rating is improved.
Accompanying drawing explanation
Fig. 1: lifting-force type vertical-axis wind power generator group structural representation.
Fig. 2: the electricity of lifting-force type vertical-axis wind power generator group of the present invention drives start up system theory diagram.
Fig. 3: the electricity of a preferred embodiment of lifting-force type vertical-axis wind power generator group of the present invention drives the concrete principle schematic of start up system;
Fig. 4: the electricity of lifting-force type vertical-axis wind power generator group of the present invention drives starting method flow chart.
Drawing reference numeral: 1: magneto alternator; 2: electricity drives controller; 3: master controller; 4: power supply; 5: wind wheel; 6: air velocity transducer; 7. rotor-position sensor; 8: lift-type blade; 9: central shaft; 10: bearing; 11: p-m rotor; 12: stator; 13: stator AC exports and rotor-position sensor output cable; 14: electricity drives controller controling circuit; 15: main controller controls circuit; K1: the first recloser; K2: the second recloser.
Embodiment
Below only with embodiment, the enforcement aspect that the present invention is possible is described, but and be not used to limit the present invention institute for protect category, first give chat bright.
As shown in Figure 1, lifting-force type vertical-axis wind power generator group comprises: magneto alternator 1, lift-type blade 8, central shaft 9 etc., and wherein the assembly of magneto alternator has: the output of p-m rotor 11, stator 12, bearing 10, stator AC and rotor-position sensor output cable 13 etc.
The present invention makes full use of the magneto alternator 1 in lifting-force type vertical-axis wind power generator group, under lower gustiness, using magneto alternator 1 as motor, drives lifting-force type vertical-axis wind power generator group to start; Can keep on the go when the rotating speed of lifting-force type vertical-axis wind power generator group is greater than vertical axis aerogenerator group at minimum wind speed vmin the minimum speed nmin of generating time, switch the state of magneto alternator 1, make it as generator operation.
Figure 2 shows that the electricity of a kind of lifting-force type vertical-axis wind power generator group provided by the present invention drives start up system, it comprises: electricity drives controller 2, master controller 3, first recloser K1, the second recloser K2 and air velocity transducer 6 and power supply 4.In a preferred embodiment of the present invention, as shown in Figure 3, the storage battery of power supply 4 for connecting from net type wind power generating set, in fact power supply 4 can also be the AC network that grid-connected wind power unit connects.
Wherein, described master controller 3 has the function that the electric energy sent lifting-force type vertical-axis wind power generator group converts and control to charge to power supply 4, the AC rectification that the magneto alternator 1 in vertical axis aerogenerator group can be sent is transformed into direct current, and controls the function to power supply 4 charging;
Meanwhile, it also receives the wind velocity signal that air velocity transducer 6 transmits, and carries out control and judges; It also has the function of control first recloser K1 and the second recloser K2 closed and disconnected.
First recloser K1 and the second recloser K2 can be contactor or relay.
And this electricity drives controller 2 has the converting direct-current power into alternating-current power provided by power supply 4, drive the function that magneto alternator 1 rotates; The DC electrical source terminal of DC supply input and power supply 4 that this electricity drives controller 2 are connected, and its ac power output is connected with the ac power supply terminal of this magneto alternator 1 through the first recloser K1; Power supply 4, electricity drive controller 2, first recloser K1 and permanent magnetism and send out synchronous machine 1 and be connected into a starting circuit; This first recloser K1 is connected on magneto alternator 1 and electricity drives between controller 2, to control the start/stop of this starting circuit.
The ac power input end of master controller 3 is connected with the ac power supply terminal of magneto alternator through the second recloser K2, and the DC power output end of master controller 3 is connected with the direct supply terminals of power supply 4; This master controller 3, magneto alternator 1 and power supply 4 are connected formation one charging circuit; One second recloser K2 is connected between magneto alternator 1 and master controller 3, to control the start/stop of this charging circuit; .
One air velocity transducer 6 is used for sensing on-the-spot wind speed, and is electrically connected master controller 3, wind velocity signal is sent to master controller 3, and described master controller 3 is also electrically connected described first recloser K1 and described second recloser K2 respectively; With the wind velocity signal that this master controller 3 is recorded by air velocity transducer 6, control the first recloser K1, this second recloser K2 closed/disconnect, realize the switching between charging circuit and starting circuit.
When extraneous wind speed v is greater than the highest operating air velocity vmax that minimum wind speed vmin and v that vertical axis aerogenerator group can cut generating be less than this vertical axis aerogenerator group, and the rotating speed n of vertical axis aerogenerator group be less than the vertical axis aerogenerator group when this minimum wind speed vmin can keep on the go generating minimum speed nmin time, master controller 3 controls the first recloser K1 and closes, second recloser K2 disconnects, electricity drives controller 2 and converts the DC electrical source that power supply 4 provides to ac power supply, the magneto alternator 1 in vertical axis aerogenerator group group is driven to rotate, thus drive the wind wheel 5 of vertical axis aerogenerator group to accelerate to rotate to being greater than nmin, making it continue to drive vertical axis aerogenerator group to operate at rotating speed by wind-force is greater than on nmin, thus obtain the lasting generating of enough driving torques maintenance wind power generating set.Now, magneto alternator 1 is equivalent to permanent magnet synchronous motor.
After the rotating speed n of vertical axis aerogenerator group is greater than nmin, master controller 3 cuts off the first recloser K1 immediately, closed second recloser K2, under the drive of vertical axis aerogenerator group 5, magneto alternator 1 rotates, now magneto alternator 1 is in generating state, master controller 3 converts magneto alternator 1 Ac to direct current, charges to power supply 4.
Lifting-force type vertical-axis wind power generator group below by way of a rated power 200W, rated wind speed 12m/s is example, and start up system of the present invention and starting method are described.The pneumatic design result that vertical axis aerogenerator group disclosed by the invention electricity drives start up system and method is: be greater than vertical axis aerogenerator group at extraneous wind speed v and can cut the highest operating air velocity vmax that the minimum wind speed vmin of generating and extraneous wind speed v is less than vertical axis aerogenerator group, and the rotating speed n of vertical axis aerogenerator group be less than the vertical axis aerogenerator group when this minimum wind speed vmin can keep on the go generating minimum speed nmin time, by magneto alternator 1 as permanent magnet motor, drive wind wheel 5 to accelerate rotation and access master controller 3 after being greater than nmin, making it continue to drive vertical axis aerogenerator group to operate at rotating speed by wind-force is greater than on nmin, thus obtain the lasting generating of enough driving torques maintenance wind-driven generator.Wherein, at rated power 200W, in the lifting-force type vertical-axis wind power generator group of rated wind speed 12m/s, vmin is 3m/s, vmax be 20m/s, nmin is 100r/min.
Starting method step of the present invention is as follows, as shown in Figure 2, Figure 4 shows:
The first step, starts, by air velocity transducer 6, measures extraneous wind speed and pass to master controller 3;
Second step, when extraneous wind speed v is greater than the highest operating air velocity vmax that minimum wind speed vmin and v that vertical axis aerogenerator group can cut generating be less than vertical axis aerogenerator group, and the rotating speed n of vertical axis aerogenerator group be less than the vertical axis aerogenerator group when this minimum wind speed vmin can keep on the go generating minimum speed nmin time, master controller 3 disconnects the second recloser K2, closed first recloser K1, starting circuit works, electricity drives the converting direct-current power into alternating-current power that power supply 4 provides by controller 2, magneto alternator 1 is driven to rotate, and then, vertical axis aerogenerator group is driven to rotate to higher rotation speed,
3rd step, when the rotating speed n of vertical axis aerogenerator group is greater than nmin, master controller 3 disconnects the first recloser K1, closed second recloser K2, incision charging circuit, now, magneto alternator is in generating state, the Ac that magneto alternator sends by master controller 3 converts direct current to, charges to power supply 4;
4th step, after extending a period of time, returns the first step, repeats above-mentioned steps.
Preferably, drive once, general certain interval of time could could drive, to save power supply 4 electric power after Rule of judgment again again.Therefore described 4th step returns the first step when restarting, and has a retard time.600 seconds retard time in this example, as shown in Figure 4.
Preferably, in a concrete preferred embodiment, described power supply 4 is storage batteries, described electricity drives controller 2 and adopts theory structure as shown in Figure 3, described electricity drives controller 2 and comprises a DC/AC inverter circuit and an electricity drives controller controling circuit 14, this DC/AC inverter circuit is electrically connected described magneto alternator 1 by described first recloser K1, and this DC/AC inverter circuit electrical connection electricity drives controller controling circuit 14, and described DC/AC inverter circuit is electrically connected described power supply 4.Namely by DC/AC inverter circuit, the direct current of power supply 4 is converted to the Ac that can drive magneto alternator 1, there is certain relation between the phase place of this Ac and rotor-position and drive electromagnetic torque to be formed; The technology that described electricity drives controller 2 is widely used in the various brushless, permanently excited direct current motor drive systems of the configurations such as existing electric bicycle, electric vehicle; This actuation techniques includes position transducer and position-sensor-free two kinds of modes.
Preferably, in a concrete preferred embodiment, described power supply 4 is storage batteries, and described master controller 3 adopts theory structure as shown in Figure 3, and described master controller 3 comprises an AC/DC rectification circuit, main controller controls circuit 15 and a DC/DC DC transfer circuit; Described AC/DC rectification circuit is electrically connected magneto alternator 1 by the second recloser K2, and the AC rectification that described magneto alternator 1 sends is become direct current; DC power conversion after this AC/DC rectifier circuit rectifies, between AC/DC rectification circuit and this power supply 4, is carry out charge power supply 4 to this power supply 4 after carrying out the controlled direct current of charge power to this power supply 4 by this DC/DC DC transfer circuit.Described air velocity transducer 6, first recloser K1, the second recloser K2 are electrically connected main controller controls circuit 15 respectively, to adopt wind velocity signal, control the on/off of the first recloser K1, the second recloser K2.
Preferably, in other preferred embodiments, described power supply 4 can also be the AC network that a grid type wind power generating set connects, described electricity drives controller 2 and adopts following theory structure: described electricity drives controller 2 and comprises an AC/AC drive circuit and an electricity drives controller controling circuit, this AC/AC drive circuit is electrically connected described magneto alternator 1 by described first recloser K1, this AC/AC drive circuit electrical connection electricity drives controller controling circuit, described AC/AC drive circuit is electrically connected described AC network, described electricity drives controller and converts variable-frequency variable-voltage Ac to by the industrial-frequency alternating current that AC network provides by AC/AC drive circuit, magneto alternator 1 is driven to rotate.
Preferably, in other preferred embodiments, described power supply 4 can also be the AC network that a grid type wind power generating set connects, and described master controller 3 adopts following theory structure: described master controller 3 comprises an AC/AC convertor circuit and a main controller controls circuit; Described AC/AC convertor circuit is electrically connected described magneto alternator by the second recloser K2, between described second recloser K2 and described AC network, transmit electricity to AC network after the industrial-frequency alternating current of the variable-frequency variable-voltage convert alternating current Cheng Kexiang AC network transmission of electricity that described magneto alternator 1 is sent; Described air velocity transducer 6, first recloser K1, the second recloser K2 are electrically connected main controller controls circuit respectively, to adopt wind velocity signal, control the on/off of the first recloser K1, the second recloser K2.
In of the present invention one concrete preferred embodiment, as shown in Figure 3, when electricity drives startup, described magneto alternator 1 adopts the mode with position transducer to drive, and rotor-position sensor 7 is arranged on the stator of magneto alternator 1, this rotor-position sensor 7 is electrically connected this electricity and drives controller 2, namely be electrically connected described electricity and drive controller controling circuit 14, to detect the position of magneto alternator magnet steel, be the position of rotor, in this, as basis, magneto alternator 1 is driven to rotate.
This magneto alternator 1 is three-phase permanent synchronous generator, as shown in Figure 3, described AC/DC rectification circuit is three-phase bridge rectification circuit, described rotor-position sensor 7 is Hall type position transducer, this Hall type position transducer is 3, is distributed in the stator iron core surface of this three-phase permanent synchronous generator with 120 degree of electrical angles.
In another concrete preferred embodiment of the present invention, when electricity drives startup, when described magneto alternator 1 adopts the mode of position-sensor-free to drive, the voltage and current that electricity drives controller 2 is linked into by detecting, and drive program in controller 2 and electricity by electricity and drive controller controling circuit 14 and complete magneto alternator 1 rotor-position and judge, and then magneto alternator 1 is driven to rotate.
By start up system of the present invention and starting method, make the threshold wind velocity of lifting-force type vertical-axis wind power generator group can be the minimum wind speed vmin of maintenance generating.This threshold wind velocity vmin generally between 2 ~ 4m/s, thus can make the threshold wind velocity of vertical axis aerogenerator group be reduced to 2 ~ 4m/s, realizes the generating capacity of low wind speed section and improves annual electricity generating capacity.
Claims (10)
1. the electricity of lifting-force type vertical-axis wind power generator group drives a start up system, and based on the magneto alternator in lifting-force type vertical-axis wind power generator group, it is characterized in that, it comprises:
One electricity drives controller, and described electricity drives the power supply that the controller magneto alternator and be electrically connected respectively in lifting-force type vertical-axis wind power generator group has charging and function of supplying power, is connected into a starting circuit; Described electricity drives controller and utilizes described power supply to rotate as input queued switches magneto alternator;
One first recloser, is connected on described magneto alternator and described electricity drives between controller;
One master controller, described master controller is connected between the ac output end of described magneto alternator and described power supply, forms an electricity-generating circuit; The Ac that described magneto alternator sends is through the backward described power supply transmission of electricity of described master controller conversion;
One second recloser is connected on electricity-generating circuit, electrical connection magneto alternator and master controller;
Described master controller is electrically connected described first recloser and described second recloser respectively; To control the closed and disconnected of described first recloser and described second recloser;
One air velocity transducer, described air velocity transducer is electrically connected described master controller, and wind velocity signal is sent to described master controller;
When extraneous wind speed v be greater than vertical axis aerogenerator group can cut generating minimum wind speed vmin and lower than the highest operating air velocity of vertical axis aerogenerator group, and the rotating speed n of vertical axis aerogenerator group be less than the vertical axis aerogenerator group when this minimum wind speed vmin can keep on the go generating minimum speed nmin time, first recloser described in described main controller controls closes, described electricity drives controller and utilizes described power supply to rotate as magneto alternator described in input queued switches, thus drive vertical axis aerogenerator group to accelerate to rotate, the rotating speed n of vertical axis aerogenerator group is made to be greater than nmin, now, described magneto alternator is equivalent to permanent magnet motor,
After the rotating speed n of vertical axis aerogenerator group is greater than nmin, described master controller cuts off described first recloser immediately, closed described second recloser, under the drive of vertical axis aerogenerator group, magneto alternator rotates, now magneto alternator is in generating state, and the Ac that described magneto alternator sends converts the transmission of electricity of backward power supply through described master controller.
2. the electricity of a kind of vertical axis aerogenerator group according to claim 1 drives start up system, it is characterized in that, described power supply is the storage battery that connects from net type wind power generating set or described power supply is the AC network that grid-connected wind power unit connects.
3. the electricity of a kind of vertical axis aerogenerator group according to claim 1 drives start up system, it is characterized in that, also include the rotor-position sensor be arranged on the stator of magneto alternator, described rotor-position sensor is electrically connected this electricity and drives controller; Described magneto alternator adopts the control mode drived control magneto alternator with position transducer to rotate when electricity drives startup.
4. the electricity of a kind of vertical axis aerogenerator group according to claim 3 drives start up system, it is characterized in that, described magneto alternator is three-phase permanent synchronous generator; Described rotor-position sensor is Hall type position transducer, and this Hall type position transducer is 3, is distributed in the stator iron core surface of three-phase permanent synchronous generator with 120 degree of electrical angles.
5. the electricity of a kind of vertical axis aerogenerator group according to claim 1 drives start up system, it is characterized in that, described magneto alternator adopts magneto alternator described in the control mode drived control of position-sensor-free to rotate when electricity drives startup.
6. the electricity of a kind of vertical axis aerogenerator group according to claim 1 drives start up system, it is characterized in that, described first recloser and the second recloser are contactor or relay.
7. the electricity of a kind of vertical axis aerogenerator group according to claim 2 drives start up system, it is characterized in that, when described power supply is storage battery, described electricity drives controller and comprises a DC/AC inverter circuit and an electricity drives controller controling circuit, this DC/AC inverter circuit is electrically connected described magneto alternator by described first recloser, this DC/AC inverter circuit electrical connection electricity drives controller controling circuit, described DC/AC inverter circuit electrical connection storage battery, described electricity drives the converting direct-current power into alternating-current power that storage battery is provided by DC/AC inverter circuit by controller, driving magneto alternator rotates, or
When described power supply is AC network, described electricity drives controller and comprises an AC/AC drive circuit and an electricity drives controller controling circuit, this AC/AC drive circuit is electrically connected described magneto alternator by described first recloser, this AC/AC drive circuit electrical connection electricity drives controller controling circuit, described AC/AC drive circuit is electrically connected described AC network, described electricity drives controller and converts variable-frequency variable-voltage Ac to by the industrial-frequency alternating current that AC network provides by AC/AC drive circuit, drives magneto alternator to rotate.
8. the electricity of a kind of vertical axis aerogenerator group according to claim 2 drives start up system, it is characterized in that, when described power supply is storage battery, described master controller comprises an AC/DC rectification circuit, a main controller controls circuit and a DC/DC DC transfer circuit; The AC rectification that described magneto alternator sends, by the second recloser electrical connection magneto alternator, is become direct current by described AC/DC rectification circuit; DC power conversion after AC/DC rectifier circuit rectifies, between described AC/DC rectification circuit and described storage battery, is can carry out after the controlled direct current of charge power charge in batteries storage battery by described DC/DC DC transfer circuit; Described air velocity transducer, the first recloser, the second recloser are electrically connected main controller controls circuit respectively; Or
When described power supply is AC network, described master controller comprises an AC/AC convertor circuit and a main controller controls circuit; Described AC/AC convertor circuit is electrically connected described magneto alternator by the second recloser, between described second recloser and described AC network, transmit electricity to AC network after the industrial-frequency alternating current of the variable-frequency variable-voltage convert alternating current Cheng Kexiang AC network transmission of electricity that described magneto alternator is sent; Described air velocity transducer, the first recloser, the second recloser are electrically connected main controller controls circuit respectively.
9. the electricity of a kind of vertical axis aerogenerator group according to claim 3 or 4 drives start up system, it is characterized in that, described rotor-position sensor is electrically connected the control circuit that described electricity drives controller inside, is supplied to desired location signal when described electricity drives controller drive motor.
10. the electricity that the electricity being applied to the arbitrary described vertical axis aerogenerator group of claim 1 to 9 drives start up system drives a starting method, and it is characterized in that, it comprises following steps:
The first step, starts, by air velocity transducer, measures extraneous wind speed;
Second step, the minimum wind speed vmin of generating can be cut when extraneous wind speed v is greater than vertical axis aerogenerator group and is less than the highest operating air velocity of vertical axis aerogenerator group, and the rotating speed n of vertical axis aerogenerator group be less than the vertical axis aerogenerator group when this minimum wind speed vmin can keep on the go generating minimum speed nmin time, described master controller disconnects described second recloser, closed described first recloser, starting circuit works, electricity drives controller and utilizes described power supply to rotate as magneto alternator described in input queued switches, and then, vertical axis aerogenerator group is driven to rotate to higher rotation speed,
3rd step, when the rotating speed n of vertical axis aerogenerator group is greater than nmin, disconnect described first recloser, closed described second recloser, incision electricity-generating circuit, now, described magneto alternator is in generating state, and described magneto alternator is through the backward described power supply transmission of electricity of described master controller conversion;
4th step, after extending a period of time, returns the first step, repeats above-mentioned steps.
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| CN201310705508.7A CN103615359B (en) | 2013-12-19 | 2013-12-19 | The electricity of lifting-force type vertical-axis wind power generator group drives start up system and starting method |
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| CN104836251A (en) * | 2015-04-20 | 2015-08-12 | 沈阳工程学院 | Multifunctional wind turbine power generation system |
| CN107727295B (en) * | 2017-12-11 | 2023-09-26 | 河南护航实业股份有限公司 | Motor starting force detection table |
| CN111550366A (en) * | 2020-05-15 | 2020-08-18 | 上海电机学院 | Wind driven generator auxiliary starting device based on single chip microcomputer and control method thereof |
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| CN101512143A (en) * | 2006-09-29 | 2009-08-19 | Abb研究有限公司 | Control method |
| CN202545120U (en) * | 2012-04-17 | 2012-11-21 | 国能风力发电有限公司 | Small vertical axis wind driven generator structure |
| CN203627089U (en) * | 2013-12-19 | 2014-06-04 | 国能风力发电有限公司 | Electrically-driven starting system of force lifting type vertical-axis wind turbine generator set |
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| CN101512143A (en) * | 2006-09-29 | 2009-08-19 | Abb研究有限公司 | Control method |
| CN202545120U (en) * | 2012-04-17 | 2012-11-21 | 国能风力发电有限公司 | Small vertical axis wind driven generator structure |
| CN203627089U (en) * | 2013-12-19 | 2014-06-04 | 国能风力发电有限公司 | Electrically-driven starting system of force lifting type vertical-axis wind turbine generator set |
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