CN112099377A - Semi-physical simulation platform of variable pitch motor of wind turbine generator - Google Patents
Semi-physical simulation platform of variable pitch motor of wind turbine generator Download PDFInfo
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Abstract
The invention relates to a semi-physical simulation platform of a variable pitch motor of a wind turbine generator, which comprises a real-time simulator, a controller, a load module and an oscilloscope, wherein the real-time simulator is respectively connected with the controller, the load module and the oscilloscope; the controller stores a wind turbine generator variable pitch control algorithm, signals of the controller are transmitted to the inverter model, and the controller controls the variable pitch motor model by controlling the inverter model by adopting the wind turbine generator variable pitch control algorithm; the load module is used for providing load data of the variable pitch motor model for the real-time simulator; the oscilloscope is used for displaying the data waveform of the real-time simulator. Compared with the prior art, the invention is more economical and convenient; the non-real-time property of off-line simulation is overcome, the time can be synchronized, and real feedback data can be obtained; the advantages of load data of the variable pitch bearing under different working conditions and different wind models and the like are considered.
Description
Technical Field
The invention relates to the field of simulation of a variable pitch motor of a wind turbine generator, in particular to a semi-physical simulation platform of the variable pitch motor of the wind turbine generator.
Background
With the rapid development of wind power generation technology, the capacity and the size of the wind turbine generator are larger and larger, so that higher requirements are also made on the design and the test of the wind turbine generator. When testing a pitch algorithm of a wind turbine generator, there are generally the following methods: the method comprises the steps of building a real wind generating set test platform for testing, building an off-line simulation model in Matlab/Simulink software for testing and building a traction motor platform for testing.
When a pitch algorithm of the wind turbine generator is tested, if a real wind turbine generator test platform is adopted for testing, although the obtained test result is convincing, the cost for building the real wind turbine generator test platform is expensive, and wind turbine equipment is easily damaged and personnel injury is easily caused when limit tests are performed. When an offline simulation model is built in Matlab/Simulink software to test a pitch algorithm, the investment cost is low, but due to the non-real-time property of offline simulation, the time cannot be synchronized, real feedback data cannot be obtained, and error influence caused by objects and the environment cannot be obtained. When a pitch algorithm for testing a wind turbine generator by a towing motor platform is built, although real motor equipment is provided, load torque under a real environment and an operation condition is difficult to simulate.
Disclosure of Invention
The invention aims to provide a semi-physical simulation platform of a variable pitch motor of a wind turbine generator, aiming at overcoming the defects that the cost for building a real wind turbine generator test platform is expensive and an off-line simulation model built in Matlab/Simulink software cannot obtain real feedback data in the prior art.
The purpose of the invention can be realized by the following technical scheme:
a semi-physical simulation platform of a variable pitch motor of a wind turbine generator comprises a real-time simulator, a controller, a load module and an oscilloscope, wherein the real-time simulator is respectively connected with the controller, the load module and the oscilloscope, and an inverter model and a variable pitch motor model are stored in the real-time simulator;
the controller stores a wind turbine generator pitch control algorithm, the signal of the controller is transmitted to the inverter model, and the controller controls the pitch motor model by controlling the inverter model by adopting the wind turbine generator pitch control algorithm;
the load module is used for providing load data of a variable pitch motor model for the real-time simulator;
the oscilloscope is used for displaying the data waveform of the real-time simulator.
Further, the load module obtains the load data through calculation of GH Bladed simulation software according to a preset wind turbine generator system pitch bearing working condition analysis table, and the wind turbine generator system pitch bearing working condition analysis table is as follows:
in the table, DLC is a load design working condition serial number, NWP is a normal wind contour model, EOG is an extreme working gust model, EDC is an extreme wind direction change model, NTM is a normal turbulence model, ETM is an extreme turbulence model, ECD is an extreme coherent gust model with direction change, EWS is an extreme wind speed shear model, VhubIs the wind speed V at the central height of the hubinFor cutting into wind speed, VoutFor cutting out wind speed, VrIs the rated wind speed.
Furthermore, the controller adopts DSP equipment, the pitch control algorithm of the wind turbine generator is stored in a DSP board card of the DSP equipment, and the DSP equipment sends out PWM waves to control the inverter model.
Furthermore, the semi-physical simulation platform also comprises a human-computer interface, and the human-computer interface is connected with the controller;
the human-computer interface is used for completing the acquisition and monitoring of experimental data, the processing and control of front-end data and carrying out visual monitoring on the semi-physical simulation platform.
Further, the human-computer interface adopts MCGS configuration software to realize the visual monitoring,
further, the controller is connected with the human-computer interface through an RS485 communication interface.
Further, the real-time simulator adopts an RT-LAB platform to build the inverter model and the variable pitch motor model.
Further, the controller and the real-time simulator are connected through an IO interface.
Further, the real-time emulator and the load module are connected through an ethernet port.
Further, the real-time simulator is connected with the oscilloscope through a BNC connector.
Compared with the prior art, the invention has the following advantages:
(1) compared with the construction of a real wind generating set test platform, the test of the pitch algorithm by using the semi-physical simulation platform of the pitch motor of the wind generating set is more economical and convenient, no casualties are caused, and the test model is flexible and variable; compared with an offline simulation model in Matlab/Simulink software, the semi-physical simulation overcomes the non-real-time property of the offline simulation, can be synchronized in time, and can obtain real feedback data; compared with a pitch-variable algorithm for testing a towing motor platform, the semi-physical simulation platform provided by the invention considers the load data of the pitch-variable bearing under different working conditions and different wind models, and the obtained load data can be used as the load data of the pitch-variable motor to be tested after being processed.
(2) In the RT-LAB real-time simulator, a processing framework of a CPU + FPGA is adopted, so that the processing speed of the simulator is greatly improved, the non-real-time property of the traditional off-line simulation can be overcome, and the time synchronism of the simulator and a controller is realized.
(3) The invention carries out load analysis on different working conditions and different wind models in the IEC61400-1 standard, and simulates the load torque of the variable-pitch motor under the real environment and the operating working conditions.
Drawings
FIG. 1 is a schematic structural diagram of a semi-physical simulation platform of a variable pitch motor of a wind turbine generator.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a semi-physical simulation platform of a pitch motor of a wind turbine generator, which is used for testing a pitch algorithm or a pitch strategy of the wind turbine generator. The semi-physical simulation platform of the variable pitch motor of the wind turbine generator set comprises a real-time simulator, a controller, a load module and an oscilloscope, wherein the real-time simulator is respectively connected with the controller, the load module and the oscilloscope, and an inverter model and a variable pitch motor model are stored in the real-time simulator;
the controller stores a wind turbine generator variable pitch control algorithm, signals of the controller are sequentially transmitted to the inverter model and the variable pitch motor model, and the controller controls the variable pitch motor model through the inverter model by adopting the wind turbine generator variable pitch control algorithm;
the load module is used for providing load data of the variable pitch motor model for the real-time simulator;
the oscilloscope is used for displaying the data waveform of the real-time simulator.
In a semi-physical simulation platform of a variable pitch motor of a wind turbine generator, a controller is connected with a real-time simulator through an IO interface, the controller is connected with a human-computer interface through an RS485 communication interface, the real-time simulator is connected with a load module through an Ethernet port, and the real-time simulator is connected with an oscilloscope through a BNC connector.
The following specifically introduces each part of the whole semi-physical simulation platform and the working principle:
1. controller
And the DSP is used as a controller, and the PWM waves are sent to control the inverter so as to control the variable pitch motor. The method comprises the steps that a pitch algorithm or a pitch strategy of the wind turbine generator needs to be downloaded to a DSP board card, then the DSP is connected with a real-time simulator through an IO interface, and different pitch motor models and different load models are used for testing a controller according to specific testing requirements.
2. Human-machine interface
A touch screen based on a Windows system is used as a human-computer interface, and MCGS configuration software is used for constructing and generating a monitoring system of the human-computer interface. The main functions of the human-computer interface are to complete the acquisition and monitoring of experimental data, the processing and control of front-end data and perform visual monitoring on the semi-physical simulation platform.
3. Real-time simulator
And (3) adopting the RT-LAB as a real-time simulator, building a simulation model of the variable pitch motor and the inverter in the real-time simulator, compiling and generating codes. In a real wind turbine generator, a pitch control motor adopts various schemes, such as a direct current motor, a permanent magnet synchronous motor, a servo motor and the like. Therefore, in the real-time simulator, different variable pitch motor models can be built to test the variable pitch algorithm of the wind turbine generator. The real-time simulator is used as a core module of the whole semi-physical simulation platform and is connected with the controller through an IO interface to transmit PWM control signals and feedback signals. The real-time simulator is connected with the load module through an Ethernet port, and the received load data is used as load torque data of the variable pitch motor.
4. Load module
In a semi-physical simulation platform of a variable pitch motor of a wind turbine generator, the actual load of the variable pitch motor needs to be considered. In a wind turbine generator, an output shaft of a variable pitch motor is generally connected with a variable pitch bearing through a reduction gear box, so that the load of the variable pitch motor is considered, namely the load torque on the variable pitch bearing is considered. The IEC61400-1 standard and the actual variable pitch bearing condition are referred to, different working conditions and different wind models are set through calculation of GH Bladed simulation software, and the specific working condition analysis of the variable pitch bearing of the wind turbine generator is shown in Table 1.
TABLE 1 analysis of the operating conditions of a wind turbine pitch bearing
In table 1: DLC represents the load design condition; NWP represents a normal wind profile model; EOG represents an extreme working gust model; EDC represents an extreme wind direction change model; NTM represents a normal turbulence model; ETM represents an extreme turbulence model; ECD represents an extreme coherent gust model of directional changes; EWS represents an extreme wind speed shear model; vhubTo representWind speed at the hub center height; vinRepresenting a cut-in wind speed; voutRepresenting the cut-out wind speed; vrIndicating the rated wind speed.
Under different working conditions and different wind models, GH Bladed wind power design software approved by the wind power industry is adopted to carry out load analysis on a variable-pitch bearing of the wind turbine generator, and obtained load data are transmitted to a real-time simulator after being processed and are used as load data of a variable-pitch motor.
5. Oscilloscope
The oscilloscope and the real-time simulator are connected through the BNC connector, different data waveforms can be displayed according to different test items, and visual monitoring of test signals of the semi-physical simulation platform is achieved.
6. Principle of operation
The working principle of the semi-physical simulation platform of the variable pitch motor of the wind turbine generator set is as follows:
and (4) building an inverter model and a variable pitch motor model required by testing in the RT-LAB real-time simulator. In GH Bladed software, load analysis is carried out on a variable pitch bearing of the wind turbine generator according to working conditions and wind models required by testing, and obtained load data are transmitted to an RT-LAB real-time simulator after being processed to serve as load torque of the variable pitch motor model. And compiling a pitch algorithm or a pitch strategy to be tested in the DSP controller, transmitting a PWM signal output by the controller to the RT-LAB real-time simulator, and transmitting feedback data obtained by the operation of the RT-LAB real-time simulator back to the controller. When the DSP controller and the RT-LAB real-time simulator run, the test signals can be visually monitored through a human-computer interface and an oscilloscope.
The GH Bladed software is used for carrying out load analysis on different working conditions and different wind models in the IEC61400-1 standard, the load torque of the variable-pitch motor under the real environment and the operating condition is simulated, the test result of the semi-physical simulation platform is more convincing than that of the towing motor platform, and the variable-pitch motor model and the load model can be flexibly changed according to the test requirements.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A semi-physical simulation platform of a variable pitch motor of a wind turbine generator comprises a real-time simulator and is characterized in that the platform further comprises a controller, a load module and an oscilloscope, wherein the real-time simulator is respectively connected with the controller, the load module and the oscilloscope, and an inverter model and a variable pitch motor model are stored in the real-time simulator;
the controller stores a wind turbine generator pitch control algorithm, the signal of the controller is transmitted to the inverter model, and the controller controls the pitch motor model by controlling the inverter model by adopting the wind turbine generator pitch control algorithm;
the load module is used for providing load data of a variable pitch motor model for the real-time simulator;
the oscilloscope is used for displaying the data waveform of the real-time simulator.
2. The semi-physical simulation platform of the wind turbine generator pitch motor according to claim 1, wherein the load module obtains the load data according to a preset wind turbine generator pitch bearing working condition analysis table, and the wind turbine generator pitch bearing working condition analysis table is as follows:
in the table, NWP is a normal wind profile model, EOG is an extreme working gust model, EDC is an extreme wind direction change model, NTM is a normal turbulence model, ETM is an extreme turbulence model, ECD is an extreme coherent gust model with direction change, EWS is an extreme wind speed tangent modelVariation model, VhubIs the wind speed V at the central height of the hubinFor cutting into wind speed, VoutFor cutting out wind speed, VrIs the rated wind speed.
3. The semi-physical simulation platform of the pitch motor of the wind turbine generator according to claim 1, wherein the controller is a DSP device, the pitch control algorithm of the wind turbine generator is stored in a DSP board card of the DSP device, and the DSP device sends out PWM waves to control the inverter model.
4. The semi-physical simulation platform of the variable pitch motor of the wind turbine generator set according to claim 1, further comprising a human-machine interface, wherein the human-machine interface is connected with the controller;
the human-computer interface is used for completing the acquisition and monitoring of experimental data, the processing and control of front-end data and carrying out visual monitoring on the semi-physical simulation platform.
5. The semi-physical simulation platform of the pitch motor of the wind turbine generator according to claim 4, wherein the human-computer interface adopts MCGS configuration software to realize the visual monitoring.
6. The semi-physical simulation platform of the pitch motor of the wind turbine generator set according to claim 4, wherein the controller is connected with the human-computer interface through an RS485 communication interface.
7. The semi-physical simulation platform of the pitch motor of the wind turbine generator set according to claim 1, wherein the real-time simulator adopts an RT-LAB platform to build the inverter model and the pitch motor model.
8. The semi-physical simulation platform of the variable pitch motor of the wind turbine generator set according to claim 1, wherein the controller and the real-time simulator are connected through an IO interface.
9. The semi-physical simulation platform of the pitch motor of the wind turbine generator set according to claim 1, wherein the real-time simulator is connected with the load module through an Ethernet port.
10. The semi-physical simulation platform for the pitch motor of the wind turbine generator set according to claim 1, wherein the real-time simulator and the oscilloscope are connected through a BNC connector.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112699565A (en) * | 2021-01-06 | 2021-04-23 | 上海亿边科技有限公司 | Simulation parameter calculation method and device for wind power generation |
| CN114153155A (en) * | 2021-11-30 | 2022-03-08 | 上海电机学院 | Wind power generation converter semi-physical simulation platform |
| CN114675095A (en) * | 2020-12-27 | 2022-06-28 | 核工业理化工程研究院 | Three-level inverter debugging method and device based on semi-physical simulation |
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Application publication date: 20201218 |