CN211692718U - Automatic yaw multi-module wind driven generator - Google Patents
Automatic yaw multi-module wind driven generator Download PDFInfo
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- CN211692718U CN211692718U CN202020209360.3U CN202020209360U CN211692718U CN 211692718 U CN211692718 U CN 211692718U CN 202020209360 U CN202020209360 U CN 202020209360U CN 211692718 U CN211692718 U CN 211692718U
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Abstract
The utility model relates to an automatic multi-module aerogenerator drifts, include: a motor housing, a main power shaft; a plurality of power generation modules connected in series on the main power shaft in sequence; each of the power generation modules includes a unit magnet portion as a rotor and a unit coil portion as a stator; the device also comprises a controller and a signal acquisition and transmission module, wherein the controller controls the number of the unit coil parts conducted by the output circuit so as to control the number of the power generation modules participating in power generation, and the device also comprises an automatic yawing system. The generator can control the power generation modules with different numbers to participate in power generation according to the change and the size of external power input, so that the generator can generate power normally when external power of different application sections is input and different external power is input, the utilization rate of the energy of a part to the generator is greatly improved, and meanwhile, the automatic yaw system enables the generator to obtain the largest wind-receiving area and capture more wind energy, and the generated energy is greatly improved.
Description
Technical Field
The utility model relates to an utilize wind energy to carry out the aerogenerator who generates electricity, concretely relates to automatic multi-module aerogenerator drifts.
Background
With the development of industrial and agricultural production and the improvement of the living standard of people, the occupation ratio of wind power generation is higher and higher, and because wind power input is unstable, the wind power utilized by the existing wind power generator is generally limited in the range of a certain application section, and the power input outside the application section cannot be effectively utilized, so that the utilization rate of renewable energy sources is low. For example, the existing large wind power generator is usually composed of a high-power generating module with a rated power of about 1000KW, and can normally generate power and output current meeting the standard only when the wind power reaches five-level, six-level or more high wind power, in the low wind and breeze section from the second level to the fourth level, the external power input and the power input are usually not enough to drive the generator to normally generate electricity, even if power is generated, the output is waste power which does not meet certain frequency and voltage standards, so that the generator is in a stop-swing and idle state for a long time under the condition of lower wind speed, the utilization of wind power by such large wind power generators is limited to a large wind power segment with a small application range, the wind energy of a low wind power section which exists for a long time cannot be utilized, so that the whole motor has low conversion rate of energy, low output and investment and great waste.
Therefore, the conventional generator cannot adjust the internal structure and rated power participating in power generation according to the real-time change of the external input power because the rated power is single and constant, so that the external power is not enough to drive the generator to normally generate power or the generator is burnt out due to over-speed operation. The prior art discloses a wind driven generator with a plurality of power generation units, which can adjust the overall power of the generator according to the external wind power, and solves the technical problem that the power of the motor changes along with the change of the external power. However, the wind power and the wind direction in the nature are always changed at any time, and the wind power generators of the plurality of power generation units cannot solve the problem that the blades are changed at any time along with the wind direction, so that the wind power generators cannot always maximize the windward side of the blades and can not obtain wind energy to the maximum extent, and the wind energy utilization of the wind power generators cannot reach the optimal state.
Disclosure of Invention
In view of the above-mentioned prior art problems, the present invention provides a wind power generator capable of automatically yawing and composed of a plurality of power generation modules capable of independently operating, wherein the generator can control the power generation modules of different numbers to participate in power generation according to the variation of the magnitude of the input external power, so as to adjust the power of the generator in time to adapt to the external conditions; meanwhile, the automatic yaw system enables the generator to always obtain the largest wind area and capture more wind energy, and the generating capacity is greatly improved. The utility model has the following specific technical scheme.
An auto-yaw multi-module wind turbine, comprising:
a motor housing, a main power shaft;
a plurality of power generation modules connected in series on the main power shaft in sequence; each of the power generation modules includes a unit magnet portion and a unit coil portion; the unit magnet parts are respectively fixedly connected with the main power shaft and can rotate along with the main power shaft to form a rotor of the generator, and the unit coil parts form a stator of the generator;
the control system comprises a controller and a signal acquisition and transmission module, wherein the signal acquisition and transmission module is in signal connection with the controller, the controller respectively controls the conduction of the output circuits of the unit coil parts according to the received signals from the signal acquisition and transmission module, and the controller controls the number of the power generation modules participating in power generation by controlling the number of the unit coil parts conducted by the output circuits;
the automatic yawing system comprises a yawing motor, a wind direction detector and an angle sensor, wherein the wind direction detector and the angle sensor are in signal connection with the controller, and the controller is electrically connected with the yawing motor.
The main power shaft is connected with the external blade to input power, penetrates through the shell of the motor and is fixed with two ends of the shell through bearings; the controller is a PLC controller or an intelligent controller; the plurality of power generation modules are two or more power generation modules capable of operating independently, each power generation module has its own rated power, the rated powers of the power generation modules are generally the same, and the rated power of the generator is the sum of the rated powers of the power generation modules. The plurality of power generation modules are sequentially connected on the main power shaft in series, which means that the plurality of power generation modules are sequentially arranged on the main power shaft in sequence, so that each power generation module can simultaneously receive the external power transmitted by the main power shaft. The unit magnet parts of each power generation module are respectively fixedly connected with the main power shaft, and under the driving of external power, the unit magnet parts of each power generation module synchronously rotate along with the main power shaft, but the rotation of each unit magnet part along with the main power shaft does not mean that each power generation module operates to generate power, and under the condition that an output circuit of a certain unit coil part is disconnected, the rotation of the unit magnet part corresponding to the unit magnet part only enables the unit coil part to cut magnetic lines of force to generate potential, but does not generate current, and the corresponding unit magnet part cannot generate reverse torque or reverse resistance acting on the main power shaft; when the output circuit of the unit coil part is conducted to an external load to form a loop, the electric potentials generate current in the unit coil part, so that the unit coil part starts to participate in power generation, and meanwhile, the unit magnet part corresponding to the unit coil part generates reverse torque acting on the main power shaft, so that the reverse torque can be balanced with the forward torque generated by external power input. The unit coil part output circuit is conducted, thereby the output circuit of the unit coil part is conducted with the external load to form a loop, and current can be generated. The utility model discloses thereby the effect of controller lies in controlling the output circuit who switches on the unit coil part of different quantity according to the signal control of the external power input size of receipt and produces the electric current operation electricity generation to make the rated power of generator adjust with the size and the change of the external power and the power of adaptation input in real time.
The yaw motor is used for driving the whole steering of the main machine of the wind driven generator, so that the windward side of the blades is maximized, and more wind energy is obtained. The wind direction detector is used for perceiving the wind direction and transmits the wind direction signal to the controller, the controller sends out the operation and the running direction of instruction control yaw motor, angle sensor is used for perceiving the holistic yaw angle of generator equipment and transmits the signal to the controller, when yaw angle is greater than certain default, the controller instructs the motor to stop working in order to ensure power generating equipment's stability and security, avoids excessively deflecting the damage that causes equipment. The preset yaw angle includes a positive maximum and a negative maximum, which control the maximum yaw angle of the generator and blades in two opposite directions. Certainly, a wind speed sensor can be additionally arranged on the motor and transmits a wind speed signal to the controller, when the wind speed reaches a certain preset value of the typhoon level, the controller instructs the yaw motor to deflect by a certain angle to avoid strong wind and ensure safety, and when the deflection angle reaches a preset safety angle, the yaw motor stops deflecting. Here, the wind speed signal and the yaw angle signal are controlled in combination, and the wind speed value and the yaw angle value are preset in the controller in advance.
The utility model discloses the signal that the controller received includes the rotational speed signal or the moment of torsion signal of main power shaft, also can be power signal, voltage signal, the current signal of power generation module, still includes wind direction signal, the angle signal of angle sensor of wind direction detector transmission. "participate in the electricity generation", it means that the electricity of output accords with certain voltage, frequency standard, can satisfy power supply, power consumption demand, also is exactly the normal electricity generation commonly known.
In order to better control the output circuit of the unit coil part, the control system also comprises a plurality of on-off switch modules; the controller is respectively connected with the on-off switch modules, and the output circuit of each unit coil part is connected with one on-off switch module in series; the controller can control the conduction of the on-off switch module according to the received signals from the signal acquisition and transmission module so as to control the conduction of the unit coil part output circuit. The on-off switch module is preferably an electromagnetic switch.
Furthermore, the unit magnet part comprises a plurality of left magnets and right magnets which are arranged oppositely, a gap is reserved between the left magnets and the right magnets, and the unit coil part is positioned in the gap. The unit magnet part comprises a group of left and right magnetic disks which are oppositely arranged, the left magnetic disk is arranged on the left magnetic disk in a staggered mode according to N poles and S poles, and the right magnetic disk is arranged on the right magnetic disk in a staggered mode according to S poles and N poles; and the left magnet and the right magnet which are oppositely arranged have opposite magnetic poles. The structure can ensure the strength of the magnetic field and increase the change of the magnetic flux in the unit coil part to the maximum extent, thereby improving the power generation efficiency and the energy conversion rate of the generator.
Furthermore, two adjacent unit magnet portions share one magnetic disk, the magnetic disk is used as a left magnetic disk of one unit magnet portion and a right magnetic disk of the other adjacent unit magnet portion, and the left magnetic body and the right magnetic body are respectively arranged on two surfaces of the magnetic disk. This optimization makes the structure of the generator more compact and saves one disk between two adjacent unit magnet portions, thereby saving cost.
The unit coil part is a coil disc matched with the left magnetic disc and the right magnetic disc in shape, and a plurality of small coil packs are arranged in the coil disc.
Because the size change of the external power of input at first reacts on the rotational speed of generator main power axle, external power is big then the rotational speed is high, and external power is little then the rotational speed is low, as the utility model discloses a best choice, signal acquisition transmission module includes a tacho encoder, and tacho encoder is associative with main power axle in order to detect its rotational speed and output signal, and this signal is rotational speed signal.
Alternatively, the signal acquisition and transmission module is connected with a unit coil part of a power generation module to detect the power related value of the power generation module and output a signal, and the signal acquisition and transmission module comprises a voltage sensor or a current sensor or a power sensor. Because each unit magnet part is fixedly connected with the main power shaft and synchronously rotates, the magnitude of the external power can be sensed by detecting the power related value of one power generation module, wherein the power related value can be a current value, a voltage value or a power value.
As still another option, the signal acquisition and transmission module includes a torque sensor, and the torque sensor is coupled with the main power shaft to detect the torque information of the main power shaft and output a signal.
The expression form of the change of the main power shaft torque value after the external power is input is that the torque value is gradually increased or gradually decreased, therefore, a plurality of numerical value intervals which are sequentially increased are preset in the controller, and when the torque value of the main power shaft is in different numerical value intervals, the controller controls the conduction of the output circuits of the unit coil parts with different numbers, so that the power generation modules with different numbers are controlled to participate in power generation. Specifically, for example, when the torque value of the main power shaft after the external power is input is in the numerical range of 1 kn to 2 kn, the controller controls to conduct the output circuit of one unit coil part so as to enable one power generation module of the power generator to participate in power generation, and when the torque value of the main power shaft is in the numerical range of 2.1 kn to 3 kn, the controller controls to conduct the output circuits of two power generation modules in total so as to enable two power generation modules of the power generator to participate in power generation at the same time, and so on.
In order to ensure that the current output by the generator meets the standard of external grid-connected power supply or the preset requirement standard, the generator further comprises a rectifier and an inverter which are in one-to-one correspondence with each unit coil part, the unit coil parts are electrically connected with the input end of the rectifier, and the output end of the rectifier is electrically connected with the input end of the inverter. The alternating current output from the power generation module is converted into direct current through the rectifier, and then the direct current is converted into alternating current meeting the standard through the inverter, so that the direct current can be externally connected to the grid for power supply or directly used. An on-off switch module is arranged between the rectifier and the inverter, so that the control of the unit coil part output circuit is facilitated.
The utility model discloses automatic driftage multimode module aerogenerator's beneficial technological effect is: the power generation modules which can be operated independently and have respective rated power form an integral generator, so that in the operation of the generator, the rated power of the whole generator can be adjusted in real time by loading or unloading different numbers of power generation modules, and the rated power of the integral generator can be changed according to the change of the size of the externally input wind power and is not constant, so that the integral generator can be completely suitable for the external wind power input of different application sections; when the input wind power is large, more power generation modules of the generator are controlled to participate in power generation through the controller, so that the rated power of the whole generator is increased, and when the input external wind power is small, less power generation modules are controlled to participate in power generation through the controller, so that the rated power of the whole generator is reduced, and therefore the generators in different application sections of the external wind power can normally generate power or generate power basically at different rated powers. Therefore the utility model discloses very big improvement the generator to the adaptability and the utilization ratio of unstable outside wind energy, both can utilize strong wind electricity generation, also can utilize breeze electricity generation. Meanwhile, the automatic yaw system enables the generator to always obtain the largest wind area and capture more wind energy, and the generating capacity is greatly improved; the angle sensor in the yaw system can limit the deflection angle of the equipment within a certain reasonable range, avoid the damage of the equipment caused by excessive deflection, and ensure the overall safety and stability of the generator equipment. Moreover, when the wind condition of the typhoon level is met, the controller can also control the optimal yaw angle by combining signals transmitted by the wind speed sensor and the angle sensor so as to avoid the damage of the typhoon to the equipment.
The utility model discloses automatic driftage multimode aerogenerator can be extensive be applied to various wind farms and industrial and mining enterprises, especially can be applied to the power supply of hard areas such as set up the very inconvenient, very high frontier defense post of cost of transmission line, island air defense, and plateau desert.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a generator according to the present invention;
fig. 2 is a schematic structural diagram of a magnetic disk and a magnet (a left magnetic disk, a right magnetic disk, a left magnet and a right magnet) of a unit magnet portion in an embodiment of the present invention;
fig. 3 is an exploded perspective view of an embodiment of the generator of the present invention;
fig. 4 is a logic relationship diagram of the power generation module of the present invention (the signal acquisition and transmission module adopts a speed measurement encoder);
fig. 5 is a control logic diagram of the controller of the present invention.
Reference numerals in the drawings of the specification include: the generator comprises a motor shell 1, a main power shaft 2, a power generation module 3, a unit magnet part 31, a unit coil part 32, a screw 33, a heat dissipation fin 11, a controller 4 and a signal acquisition and transmission module 5.
Detailed Description
The following is further detailed by way of specific embodiments:
referring to fig. 1-3, a preferred embodiment of an auto-yaw multi-module wind turbine is shown, which includes: motor housing 1, main power shaft 2, four electricity generation module 3 and the control system of concatenating in proper order on main power shaft 2, motor housing 1 includes upper casing, lower casing and front end housing, the rear end cap fixed mutually through the bolt, and main power shaft 2, electricity generation module 3 are all installed in motor housing 1, still are provided with the radiating fin 11 of being convenient for heat dissipation on motor housing 1. Each power generation module 3 comprises a unit magnet part 31 and a unit coil part 32, specifically, each unit magnet part 31 comprises a group of left and right magnetic disks which are arranged oppositely, a plurality of left magnets are arranged on the left magnetic disk in a staggered manner according to N poles and S poles, a plurality of right magnets are arranged on the right magnetic disk in a staggered manner according to S poles and N poles, the magnetic poles of the left and right magnets which are arranged oppositely are opposite, a gap is reserved between the left and right magnets, a gap is correspondingly reserved between the left and right magnetic disks, and the left and right magnetic disks of each unit magnet part 31 are respectively and fixedly connected with the main power shaft 2 through key slots and can rotate along with the main power shaft 2 to form a rotor of the generator. The unit coil part 32 is fixed on the motor shell 1 through a screw 33, the unit coil part 32 forms a stator of a generator, the unit coil part 32 is formed by arranging a plurality of small coil packs in sequence, the coil packs are integrally formed into coil discs matched with the left magnetic disc and the right magnetic disc in shape, the small coil packs are formed by winding enameled copper wires, and the number of the small coil packs can be determined according to requirements and power of the generator.
The unit coil part 32 is located in the gap between the left magnet (left disk) and the right magnet (right disk), so that one unit coil part 32 is sandwiched between the two disks (left disk, right disk), although there is a certain distance between the disks (left disk, right disk) and the unit coil part 32 so that the disks can normally rotate without rubbing the unit coil part 32. End faces of the left and right magnetic disks are substantially parallel to an end face of the unit coil portion 32 and substantially perpendicular to an axis of the main power shaft 2; and a certain gap is formed between the peripheral walls of the left magnetic disc and the right magnetic disc and the inner wall of the motor shell 1, so that the magnetic discs cannot rub against the motor shell 1 when rotating. The unit coil portions 32 may cut magnetic lines of force between the left and right magnets when the unit magnet portions 31 rotate with the main power shaft 2.
In this embodiment, two adjacent unit magnet portions 31 share one magnetic disk, the magnetic disk concurrently serves as a left magnetic disk of one unit magnet portion 31 and a right magnetic disk of another adjacent unit magnet portion 31, and a plurality of left and right magnets are respectively arranged on both surfaces of the magnetic disk. This optimization makes the structure of the generator more compact and saves one disk between two adjacent unit magnet portions 31, thereby saving cost.
Each power generation module 3 has its own rated power, in this embodiment, the rated powers of the power generation modules 3 are the same, and the total rated power of the generator is the sum of the rated powers of the power generation modules 3. The plurality of power generation modules 3 are sequentially connected in series on the main power shaft 2 so that each power generation module 3 can receive the external power transmitted by the main power shaft 2 at the same time.
The generator also comprises a power switch, a display and a power indicator, the display is in signal connection with the controller, the display is provided with an operation interface which is convenient for setting control parameters in the controller, and the power indicator is electrically connected with the controller.
The control system comprises a controller 4 and a signal acquisition and transmission module 5 (as shown in fig. 4), wherein the signal acquisition and transmission module 5 is in signal connection with the controller 4, the controller 4 respectively controls the conduction of the output circuits of the unit coil parts 32 according to the received signals from the signal acquisition and transmission module 5, and the controller 4 controls the number of the power generation modules 3 participating in power generation by controlling the number of the unit coil parts 32 which are conducted by the output circuits. Specifically, the controller 4 can select a plurality of devices, and can be a single chip microcomputer or a PLC controller, and the selected PLC is siemens PLC in this embodiment. The signal collecting and transmitting module 5 includes a speed measuring encoder in this embodiment, for example, a hall sensor may be selected to detect the rotating speed of the main power shaft 2, the speed measuring encoder is connected to the main power shaft 2 to detect the rotating speed and output a signal, and the signal is a rotating speed signal. The change of the magnitude of the input external wind force is firstly reflected on the rotating speed of the main power shaft 2 of the generator, the rotating speed is high when the external wind force is large, and the rotating speed is low when the external power is small, and the control is realized by detecting the rotating speed of the main power shaft 2, which is a preferable mode. When the rotating speed of the main power shaft 2 reaches a preset rotating speed upper limit value, the controller 4 controls to conduct an output circuit of a unit coil part 32 so as to load a power generation module 3 to participate in power generation, and at the moment, a reverse torque opposite to the external power is loaded on the main power shaft 2, so that the rotating speed of the main power shaft is reduced to be within the original rotating speed range; when the rotation speed of the main power shaft 2 reaches a preset lower limit value of the rotation speed, the controller 4 controls to open the output circuit of one unit coil part 32 so as to unload one power generation module 3 which participates in power generation, and at the moment, a reverse torque opposite to the external power is unloaded from the main power shaft 2, so that the rotation speed of the main power shaft rises to the original rotation speed range. Thus, when the external power is increased, the controller 4 controls the output circuits conducting a larger number of unit coil portions 32 so that more power generation modules 3 participate in power generation, and when the external power is smaller, the controller 4 controls the output circuits conducting a smaller number of unit coil portions 32 so that fewer power generation modules 3 participate in power generation, so that the number of power generation modules 3 participating in power generation and the rated power of the power generator can be adjusted in real time along with the change of the external power, and because the rotating speed of the main power shaft 2 is always maintained in a constant range, the current output by the power generation modules 3 participating in power generation is relatively stable and meets certain frequency and voltage standards.
In order to ensure that the current output by the generator meets the standard of external grid-connected power supply or the preset requirement standard, the generator further comprises a rectifier and an inverter (not shown in the figure) which are in one-to-one correspondence with each unit coil part 32, wherein the unit coil parts 32 are electrically connected with the input end of the rectifier, and the output end of the rectifier is electrically connected with the input end of the inverter. The alternating current output from the power generation module 3 is converted into direct current through the rectifier, and then the direct current is converted into alternating current meeting the standard through the inverter, so that the direct current can be externally connected to the grid for power supply or directly used.
In order to better control the output circuit of the unit coil part 32, the control system further comprises a plurality of on-off switch modules, the on-off switch modules are arranged between the rectifier and the inverter, and the on-off switch modules are electromagnetic switches; the controller 4 is respectively connected with the on-off switch modules, and the output circuit of each unit coil part 32 is connected with one on-off switch module in series; the controller 4 can control the conduction of the on-off switch module according to the received signal from the signal acquisition and transmission module 5 so as to control the conduction of the output circuit of the unit coil part 32.
The utility model discloses an automatic superposition and the uninstallation of each power module of multi-module aerogenerator drifts about like this, like the logical relation graph that fig. 4 shows how to control four power modules (numbering A, B, C, D respectively) and participate in the electricity generation, adopt the tachometer encoder to regard as the rotational speed information of signal acquisition transmission module with perception and transmission main power shaft in this embodiment, the superimposed control of module of this embodiment includes following step:
A. a rotating speed upper limit value and a rotating speed lower limit value are preset in the controller 4;
B. the external power drives the main power shaft 2 of the generator to rotate and drives the unit magnet parts 31 of the power generation modules 3 to rotate, and the speed measuring encoder detects and collects the rotating speed information of the main power shaft 2 and transmits a rotating speed signal to the controller 4;
C. when the rotating speed of the main power shaft 2 reaches the rotating speed upper limit value, the controller 4 controls and conducts an output circuit of a unit coil part 32, the unit coil part 32 is conducted with an external load to form a loop, electric potential generated by the unit coil part 32 forms current in the loop, so that a power generation module 3 is loaded to participate in power generation, and the rotating speed of the main power shaft 2 is reduced to be between the rotating speed upper limit value and the rotating speed lower limit value;
D. the external power is increased so as to drive the rotation speed of the main power shaft 2 to increase, when the rotation speed reaches the upper limit value of the rotation speed again, the controller 4 controls and conducts an output circuit of a unit coil part 32, the unit coil part 32 is conducted with an external load to form a loop, the electric potential generated by the unit coil part 32 forms current in the loop, so that a power generation module 3 is loaded to participate in power generation, and the rotation speed of the main power shaft 2 is reduced to be between the upper limit value of the rotation speed and the lower limit value of the rotation speed.
By analogy, under the condition that the external power is continuously increased, the N power generation modules 3 can be loaded step by step and participate in power generation simultaneously so as to match the power input from the outside and the power increase, so that the generator can normally generate power and output current meeting the standard within a constant rotating speed range all the time. When the external power is reduced, the generator can also unload the power generation module 3 already participating in the power generation, and comprises the following steps:
E. when the external power is gradually reduced and the rotating speed of the main power shaft 2 reaches the lower rotating speed limit value, the controller 4 controls to open an output circuit of a unit coil part 32, the unit coil part 32 is disconnected with a loop of an external load, the unit coil part 32 only generates electric potential and cannot form current, so that a power generation module 3 which participates in power generation is unloaded, and the rotating speed of the main power shaft 2 rises to a position between the upper rotating speed limit value and the lower rotating speed limit value;
F. when the external power continues to be gradually reduced and the rotation speed of the main power shaft 2 reaches the rotation speed lower limit value again, the controller 4 controls to open the output circuit of one unit coil part 32, the unit coil part 32 is disconnected from the circuit of the external load, the unit coil part 32 generates only the electric potential and cannot form the current, and thus one power generation module 3 which has participated in power generation is unloaded again.
Specifically, the speed measuring encoder is an encoder with the model number of Bourns EMS22D51-B28-LS5, is installed on the main power shaft 2, and detects the rotating speed of the main power shaft 2.
The generator is also provided with an automatic yaw system, the system comprises a yaw motor, a wind direction detector and an angle sensor, the wind direction detector and the angle sensor are in signal connection with the controller, and the controller is electrically connected with the yaw motor.
The yaw motor adopts a conventional motor, the power supply of the yaw motor can be current generated by a generator, and the motor drives the whole body of the wind driven generator to rotate through a gear structure, so that blades capturing wind energy face the incoming wind, the windward side of the blades is maximized, and more wind energy is obtained. As can be seen from fig. 5, the wind direction detector is in signal connection with the controller and is used for sensing the wind direction and transmitting a wind direction signal to the controller, and the controller sends out a command to control whether the yaw motor operates and the direction of operation; the angle sensor is used for sensing the integral yaw angle of the generator equipment and transmitting a signal to the controller, and when the yaw angle is larger than a certain preset value, the controller instructs the motor to stop running so as to ensure the stability and the safety of the generating equipment and avoid the damage of the equipment caused by excessive deflection. The preset yaw angle includes a positive maximum and a negative maximum, which control the maximum yaw angle of the generator and blades in two opposite directions. Certainly, a wind speed sensor can be additionally arranged on the motor and transmits a wind speed signal to the controller, when the wind speed reaches a certain preset value of the typhoon level, the controller instructs the yaw motor to deflect by a certain angle to avoid strong wind and ensure safety, and when the deflection angle reaches a preset safety angle, the yaw motor stops deflecting. Here, the wind speed signal and the yaw angle signal are controlled in combination, and the wind speed value and the yaw angle value are preset in the controller in advance.
The above embodiments are merely examples of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes has not been described herein, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the structure of the present invention, and these should be considered as the protection scope of the present invention, and the protection scope of the present invention should be determined by the content of the claims, and the description of the specific embodiments and the like in the specification can be used to explain the content of the claims.
Claims (8)
1. Automatic many modules aerogenerator drifts characterized in that: comprises that
A motor housing, a main power shaft;
a plurality of power generation modules connected in series on the main power shaft in sequence; each of the power generation modules includes a unit magnet portion and a unit coil portion; the unit magnet parts are respectively fixedly connected with the main power shaft and can rotate along with the main power shaft to form a rotor of the generator, and the unit coil parts form a stator of the generator;
the control system comprises a controller and a signal acquisition and transmission module, wherein the signal acquisition and transmission module is in signal connection with the controller, the controller respectively controls the conduction of the output circuits of the unit coil parts according to the received signals from the signal acquisition and transmission module, and the controller controls the number of the power generation modules participating in power generation by controlling the number of the unit coil parts conducted by the output circuits;
the automatic yawing system comprises a yawing motor, a wind direction detector and an angle sensor, wherein the wind direction detector and the angle sensor are in signal connection with the controller, and the controller is electrically connected with the yawing motor.
2. The auto-yaw multi-module wind turbine according to claim 1, wherein: the control system also comprises a plurality of on-off switch modules; the controller is respectively connected with the on-off switch modules, and the output circuit of each unit coil part is connected with one on-off switch module in series; the controller can control the conduction of the on-off switch module according to the received signals from the signal acquisition and transmission module so as to control the conduction of the unit coil part output circuit.
3. The auto-yaw multi-module wind turbine according to claim 1 or 2, wherein: the unit magnet part comprises a plurality of left magnets and right magnets which are arranged oppositely, a gap is reserved between the left magnets and the right magnets, and the unit coil part is positioned in the gap.
4. The auto-yaw multi-module wind turbine according to claim 3, wherein: the unit magnet part comprises a group of left and right magnetic disks which are oppositely arranged, the left magnetic disk is arranged on the left magnetic disk in a staggered mode according to N poles and S poles, and the right magnetic disk is arranged on the right magnetic disk in a staggered mode according to S poles and N poles; and the left magnet and the right magnet which are oppositely arranged have opposite magnetic poles.
5. The auto-yaw multi-module wind turbine according to claim 4, wherein: two adjacent unit magnet parts share one magnetic disc, the magnetic disc is simultaneously used as a left magnetic disc of one unit magnet part and a right magnetic disc of the other adjacent unit magnet part, and the left magnet and the right magnet are respectively arranged on two surfaces of the magnetic disc.
6. The auto-yaw multi-module wind turbine according to claim 4, wherein: the unit coil part is a coil disc matched with the left magnetic disc and the right magnetic disc in shape, and a plurality of small coil packs are arranged in the coil disc.
7. The auto-yaw multi-module wind turbine according to claim 1 or 2, wherein: the signal acquisition and transmission module comprises a speed measurement encoder which is connected with the main power shaft to detect the rotating speed of the main power shaft and output signals.
8. The auto-yaw multi-module wind turbine according to claim 1 or 2, wherein: the signal acquisition and transmission module is connected with a unit coil part of a power generation module to detect the power related value of the power generation module and output a signal, and comprises a voltage sensor or a current sensor or a power sensor.
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| CN202020209360.3U CN211692718U (en) | 2020-02-25 | 2020-02-25 | Automatic yaw multi-module wind driven generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173682A (en) * | 2020-02-25 | 2020-05-19 | 宁波晓风风电技术有限公司 | Automatic yaw multi-module wind driven generator |
| CN117072375A (en) * | 2023-10-13 | 2023-11-17 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
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2020
- 2020-02-25 CN CN202020209360.3U patent/CN211692718U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173682A (en) * | 2020-02-25 | 2020-05-19 | 宁波晓风风电技术有限公司 | Automatic yaw multi-module wind driven generator |
| CN117072375A (en) * | 2023-10-13 | 2023-11-17 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
| CN117072375B (en) * | 2023-10-13 | 2024-01-09 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
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