A kind of wind-power generating yaw servo-control system based on motion controller
Technical field
The present invention relates to a kind of driftage control field of wind-driven generator, particularly a kind of wind-power generating yaw servo-control system based on motion controller.
Background technique
The energy is the fundamental of human survival, the main goods and materials basis of national economy.Owing to the exhausted day by day and human concern that doubles to the grobal environment deterioration of fossil energy, wind energy has received global attention deeply as inexhaustible, nexhaustible green energy resource.Wind-power electricity generation just worldwide obtains fast development at the positive effect that solves on the energy and the environmental problem, becomes the fastest energy of world today's growth rate.
Through years of development, wind-power electricity generation is from initial fixed pitch feather till now, and from constant-speed and constant-frequency frequency conversion constant speed by now, wind generating technology is comparatively ripe.But the yaw system of existing wind energy conversion system, it adopts electro-hydraulic servo control mostly, driving gear of installing on the electro-hydraulic servo output shaft and the engagement of driftage fluted disc; The locking member of driftage braking device is installed on the direct drive type electrohydraulic servo output axis; The variable-frequency motor of electro-hydraulic servo is connected with two-way metering pump, and two-way metering pump connects through hydraulic lock, and Fill valve is connected on two oil circuits between two-way metering pump and the low speed high torque hydraulic motor.
The driving mechanism of existing wind driven generator yaw drive unit is complicated, and the reliability of driftage braking device resistance low, that driftage drives is big, makes that driftage control is dumb.
Summary of the invention
In order to solve the shortcoming of above-mentioned existing technology; The object of the present invention is to provide a kind of wind-power generating yaw servo-control system based on motion controller, adopted motion controller that yaw device is controlled, it is flexible to have control mode; Simple in structure, high reliability features.
To achieve these goals, the technological scheme of the present invention's employing is:
A kind of wind-power generating yaw servo-control system based on motion controller; Comprise sensor assembly 1; The analog amount output of sensor assembly 1 links to each other with the analog amount input part of motion controller 2; The input control end of the inversion module of the drive circuit 3 of servo motor set 4 links to each other with the output control terminal of motion controller 2; The three-phase input of servo motor set 4 is connected to the rectification module output terminal of drive circuit 3, and the encoder of servo motor set 4 links to each other with the output control terminal of the inversion module of drive circuit 3, and the gear of cabin axle 5 is mutually meshing with the gear that servo motor set 4 is driven again; The operation conditions of the rotating speed of servo motor set 4 and cabin axle 5 feeds back to motion controller 2 through sensor assembly 1 again, and the control input end of motion controller 2 is connected with the analog amount output terminal of wind-driven power generation control system 6 again.
Described wind-driven power generation control system 6 comprises a microcontroller PLC7, and the analog amount input end of microcontroller PLC7 is connected with sensor assembly 1, and the control output end of microcontroller PLC7 is connected with motion controller 2, and the digital quantity output terminal connects operating console 8.
Motion controller 2 is controlled motor according to the instruction of wind-driven power generation control system 6 and rotating speed, the angle feedback signal of actuating motor, regulates the windward side of blade; Make it aim at wind direction, thereby obtain the maximal wind-energy utilization, it is flexible to have control mode; Simple in structure, high reliability features.
Description of drawings
Fig. 1 is a structural principle block diagram of the present invention.
Fig. 2 is that wind-driven power generation control system of the present invention connects schematic representation.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and working principle are done further explain.
With reference to Fig. 1; A kind of wind-power generating yaw servo-control system based on motion controller; Comprise sensor assembly 1, the analog amount output of sensor assembly 1 links to each other with the analog amount input part of motion controller 2, and the input control end of the inversion module of the drive circuit 3 of servo motor set 4 links to each other with the output control terminal of motion controller 2; The three-phase input of servo motor set 4 is connected to the rectification module output terminal of drive circuit 3; The encoder of servo motor set 4 links to each other with the output control terminal of the inversion module of drive circuit 3, and the gear of cabin axle 5 is mutually meshing with the gear that servo motor set 4 is driven, and rotates thereby drive the cabin.The operation conditions of the rotating speed of servo motor set 4 and cabin axle 5 feeds back to motion controller 2 through sensor assembly 1 again, realizes closed loop control.The control input end of motion controller 2 is connected with the analog amount output terminal of wind-driven power generation control system 6 again, through the monitored picture monitoring operation conditions of wind-driven power generation control system.
Wherein sensor assembly 1 data of being gathered are divided into two-part; A part is the data of wind speed and direction; Mainly from the anemoscope of nacelle exterior, this part data is sent to wind-driven power generation control system 6, and wind-driven power generation control system 6 sends the driftage instruction according to these parameters to motion controller 2; Another part is the rotating speed and the angle of swing of actuating motor; Data owner will come from the encoder and the angle transducer of motor; This part data is sent to motion controller 2 and wind-driven power generation control system 6 simultaneously; Rotating speed and angle of swing that motion controller 2 comes correcting motor according to these data, wind-driven power generation control system 6 is with being presented on the operating console after the data processing, so that it is monitored simultaneously.Motion controller 2 is controlled motor according to the instruction of wind-driven power generation control system 6 and rotating speed, the angle feedback signal of actuating motor, regulates the windward side of blade, makes it aim at wind direction, thereby obtains the maximal wind-energy utilization.
With reference to Fig. 2, wind-driven power generation control system 6 comprises a microcontroller PLC7, and the analog amount input end of microcontroller PLC7 is connected with sensor assembly 1, and the control output end of microcontroller PLC7 is connected with motion controller 2, and the digital quantity output terminal connects operating console 8.Action command is sent to motion controller 2 in the control output end of wind-power generating system 6, and commander's motion controller 2 moves; Data after handling simultaneously send to operating console 8 through the digital quantity output terminal; Can be used for the data display on the operating console 8; Data are monitored in real time; So that operator proofread and correct the parameter of microcontroller PLC7 through the digital quantity output terminal of operating console 8 as the case may be, all parameters in the native system all can be provided with in microcontroller PLC7, and can monitor through operating console 8.
Concrete working principle of the present invention is:
When wind direction changes; Anemoscope in the sensor assembly 1 is gathered wind direction and air speed data; And sending to wind-driven power generation control system 6 analog amount input ends, wind-driven power generation control system 6 through being converted into the control command of angle of swing after calculation process, and sends to motion controller 2 through its control output end with these data; Motion controller 2 sends actuating signal according to these instructions to drive circuit 3; Drive circuit 3 drives servo motor set 4 entrys into service, thereby the driven gear rotation makes the cabin also begin to rotate wind.Encoder on the servo motor set 4 feeds back to motion controller 2 and wind-driven power generation control system 6 with rotating speed of motor and rotation angle signal in real time simultaneously; Motion controller 2 compares computing with the instruction that feedback signal and wind-driven power generation control system 6 send; Continue the rotating speed and the angle of swing of correcting motor according to operation result; Identical up to the and instruction data, just send the instruction that shuts down.Feedback signal shows through handling to send on the operating console in wind-driven power generation control system 6 in real time, so that operator grasp the runnability of motor at any time, so that in time Control Parameter is adjusted through operating console when pinpointing the problems.
If will adjust to Control Parameter; Detailed process is: operator can be provided with motor speed and angle of swing on operating console 8; Settings changes according to on-the-spot wind speed and direction to be calculated; The control output end of the parameter that sets through operating console 8 sends to the analog amount input end of microcontroller PLC7 with parameter, and microcontroller PLC7 can directly send to order the control input end of motion controller 2 according to parameter, moves according to setup parameter thereby drive servo motor set 4; Simultaneously the encoder of actuating motor still feeds back to motion control 2 and control system 6 with the Operational Limits of motor, and is presented on the operating console 8 in real time.
Under normal state; The wind direction variable signal that this control system is sent according to sensor assembly 1 is through the processing of motion controller 2, through the rotor speed of drive circuit 3 control servo motor set 4; And then the cabin axle 5 of control yaw system, wind-driven generator oar face is facingd the wind.Controller 2 can also be regulated the deflection angle that the oar face facings the wind automatically according to setting, to reduce the rotating speed of wind-driven generator; When wind speed is excessive; During generator output current overrate, controller 2 sends the driftage instruction automatically, and the cabin is deflected; Make oar face and wind direction out of plumb; Rather than, can guarantee that so on the one hand the output power of generator is stablized just in the face of wind obtains strong wind power, can protect whole unit to avoid the excessive damage that causes that machine utilization is overweight and cause of wind speed on the other hand.The operation conditions of actuating motor and yaw system sends signal in real time to motion controller through feedback element in whole control process, to guarantee that system is carried out real-time optimal control.Through above control, make wind power generating set reduce the wind energy loss as much as possible, increase the effective time.
The parameter that is shown on the operating console of described wind-driven power generation control system 6 mainly contains: wind speed; Wind direction; The rotating speed and the corner of driftage actuating motor, the deflection angle of oar face, the residual electricity of the output voltage of generator, electric current, power and actuating motor group storage battery.