CN206876318U - A kind of pitch motor torque output capability test system - Google Patents
A kind of pitch motor torque output capability test system Download PDFInfo
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- CN206876318U CN206876318U CN201720147228.2U CN201720147228U CN206876318U CN 206876318 U CN206876318 U CN 206876318U CN 201720147228 U CN201720147228 U CN 201720147228U CN 206876318 U CN206876318 U CN 206876318U
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- pitch motor
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
A kind of pitch motor torque output capability test system, including servo controller, message handler and host computer；The data acquisition unit and terminal voltage curve for drawing pitch motor no-load test of motor terminal voltage and stator current when message handler includes being used to gather unloaded under the low frequency slow-speed of revolution, the data processing unit of the emf curve of pitch motor no-load test is drawn according to the equivalent circuit of pitch drive motor and equation and the equivalent parameters of pitch motor；Host computer is connected with servo controller, message handler, host computer includes instructing and read the control module of motor operating parameter information and for the index using the pressure difference between emf curve and terminal voltage curve as convergence degree for writing motor operation, the smaller evaluation module for showing that torque output capability is better of index, control module is connected with servo controller, and data processing unit is connected with evaluation module.The utility model can effectively assess pitch motor torque output capability.
Description
Technical field
The technical field of wind generating set pitch control system is the utility model is related to, in particular it relates to a kind of pitch motor
Torque output capability test system.
Background technology
Wind-power electricity generation as new energy has the advantage such as economic, green, safe increasingly by countries in the world
Pay attention to.The single-machine capacity of modern Wind turbines is increasing, and rotor diameter is also increasing.And wherein use electric pitch-changing control
The Wind turbines of technology processed are used widely because of its superior performance in large-scale wind electricity unit.
Executing agency of the pitch motor as electric pitch-changing system, its performance are to ensure the reliability, steady of pitch-controlled system
The key of the exploitation design of qualitative, response characteristic and Wind turbines.
In blower fan actual moving process, complexity and polytropy due to wind regime, pitch motor need overload torque
The ability of lower frequent starting, motor performance, which is assessed, during pitch motor type selecting can ensure reliability, stability and the sound for becoming oar action
Characteristic is answered, reduces failure and O＆M cost cycle, improves stability and the life-span of unit.General-purpose motor performance measurement and assessment
Typically by the output torque characteristic of the testing of electric motors under nominal parameter, it is necessary to which dynamometer machine for connecting (torque sensor) is turned
Square characteristic test, due to being installed the factor shadows such as axiality, dynamometer machine PID control, the heating of winding overcurrent by motor and dynamometer machine
Ring, certain change can all occur for the motor torque output characteristics tested out every time.
The content of the invention
In order to which overcome the shortcomings of existing wind generating set pitch control system can not effectively assess torque output capability, this reality
With a kind of a kind of pitch motor torque output capability test system for effectively assessing torque output capability of new offer.
Technical scheme is used by the utility model solves its technical problem：
A kind of pitch motor torque output capability test system, including servo controller, message handler and host computer；
Motor terminal voltage and stator current when described message handler includes being used to gather unloaded under the low frequency slow-speed of revolution
Data acquisition unit and terminal voltage curve for drawing pitch motor no-load test, according to pitch drive motor etc.
Imitate the data processing list of circuit and equation and the emf curve of the equivalent parameters of pitch motor drafting pitch motor no-load test
Member, the data acquisition unit are connected with the data processing unit；
Described host computer is connected with described servo controller, described message handler, and described host computer includes
For writing motor operation instruction and reading the control module of motor operating parameter information and for by emf curve and end
Index of the pressure difference as convergence degree between voltage curve, the smaller evaluation module for showing that torque output capability is better of index,
The control module is connected with the servo controller, and the data processing unit is connected with the evaluation module.
Further, described data acquisition unit and data processing unit select Beckhoff CX5020 and associated analog
Measure input and output I/O modules.
Further, described servo controller and described message handler use with described host computer
CANopen is communicated.
Technical concept of the present utility model is：The torque output performance of pitch motor is assessed using no-load test method, especially
It is the torque output capability of the emf curve and terminal voltage curve assessment pitch motor under low frequency Light Condition.Become oar electricity
Machine carries out no-load test under the low frequency slow-speed of revolution, motor terminal voltage and the stator electricity collected according to described message handler
Stream, the terminal voltage curve of pitch motor no-load test is drawn, according to the equivalent circuit of pitch drive motor and equation and become oar electricity
The equivalent parameters of machine draws the emf curve of pitch motor no-load test.By the unloaded Electro dynamic power curve of pitch motor and end electricity
Line of buckling is compared, especially the emf curve under low frequency state and terminal voltage curve, and terminal voltage curve and electromotive force are bent
Line gets over convergence, and pressure difference is smaller, illustrates that pitch motor torque output capability is better；Conversely, two curves more separate, pressure difference is bigger, says
Bright pitch motor torque output capability is poorer.
The beneficial effects of the utility model are mainly manifested in：Effectively assess torque output capability.
Brief description of the drawings
Fig. 1 is test system schematic diagram in the utility model.
Fig. 2 is the equivalent circuit diagram of pitch motor in the utility model.
Fig. 3 is pitch motor unloaded Electro dynamic power curve and terminal voltage curve map in the utility model.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
1~Fig. 3 of reference picture, a kind of pitch motor torque output capability test system, including servo controller, information processing
Device and host computer；
Motor terminal voltage and stator current when described message handler includes being used to gather unloaded under the low frequency slow-speed of revolution
Data acquisition unit and terminal voltage curve for drawing pitch motor no-load test, according to pitch drive motor etc.
Imitate the data processing list of circuit and equation and the emf curve of the equivalent parameters of pitch motor drafting pitch motor no-load test
Member, the data acquisition unit are connected with the data processing unit；
Described host computer is connected with described servo controller, described message handler, and described host computer includes
For writing motor operation instruction and reading the control module of motor operating parameter information and for by emf curve and end
Index of the pressure difference as convergence degree between voltage curve, the smaller evaluation module for showing that torque output capability is better of index,
The control module is connected with the servo controller, and the data processing unit is connected with the evaluation module.
Preferably, described data acquisition unit and data processing unit select Beckhoff CX5020 and associated analog
Measure the information such as input and output I/O modules, collection machine winding terminal voltage, stator current and winding temperature.
Preferably, described servo controller and described message handler use CANopen with described host computer
Communication.
A kind of pitch motor torque output capability appraisal procedure that the test system of the present embodiment is realized, pitch motor is low
No-load test is carried out under the frequency slow-speed of revolution, the motor terminal voltage and stator current collected according to described message handler, is drawn
The terminal voltage curve of pitch motor no-load test, according to the equivalent of the equivalent circuit of pitch drive motor and equation and pitch motor
Parameter draws the emf curve of pitch motor no-load test.
According to the equivalent circuit diagram of described pitch motor as shown in Figure 2, equivalent equation：
Wherein, U1For pitch motor terminal voltage, E1、E2Respectively stator terminal electromotive force and rotor-end electromotive force, I1、I2、Im
Respectively stator current, rotor current and leakage field electric current, R1、R’2、ZmRespectively stator resistance, rotor resistance and leakage impedance,
X1σ、X’2σRespectively stator inductance and inductor rotor.
Understood according to formula (1), when pitch motor is run under rated voltage and rated frequency,
U1≈E1, I1(R1+jX1σ) ＜ ＜ U1
When pitch motor is run under the low-frequency and low-voltage slow-speed of revolution,
△ U=I1(R1+X1σ)=E1—U1
Wherein, △ U are stator terminal electromotive force E1With voltage U1Pressure difference, relation curve is as mentioned shown in accompanying drawing 3.
In pitch motor no-load running, due to being influenceed by factors such as temperature, the winding resistance value of pitch motor can be with
Certain change occurs for temperature so that certain change occurs for the terminal voltage and stator current of measurement, need to be to winding resistance value amendment
To at defined temperature, influence COEFFICIENT K of the reduced temperature to terminal voltageT,
So, revised terminal voltage：U′1=KT*U1
Wherein, U '1For revised terminal voltage, KTFor Temperature affection factor, U1To survey terminal voltage.
According to motor electromagnetic torque equation：
Wherein, T is pitch motor output torque, and P is the pitch motor number of phases, and s is revolutional slip, and f is working frequency.
From described accompanying drawing 3, when pitch motor is run at low frequency, the relation of motor terminal voltage and electromotive force,
Frequency is lower, and electromotive force and motor terminal voltage pressure difference are bigger.Emf curve and terminal voltage curve get over convergence, and pressure difference is smaller, electricity
Machine torque output capability is better；Otherwise two curves more separate, pressure difference is bigger, and motor torque fan-out capability is poorer.According to electromotive force
The convergence degree (magnitude of pressure differential) of curve and terminal voltage curve assesses the torque output capability of motor.
Pitch motor carries out no-load test under the low frequency slow-speed of revolution, according to the equivalent circuit of pitch drive motor and equation and
The equivalent parameters of pitch motor draws the emf curve of pitch motor no-load test, is adopted according to described electrical parameter acquisition system
The motor terminal voltage and stator current collected, draw the terminal voltage curve of pitch motor no-load test.According to terminal voltage curve and
The degree of closeness (pressure difference) of emf curve assesses the torque output capability of pitch motor.
Claims (3)
- A kind of 1. pitch motor torque output capability test system, it is characterised in that：The test system include servo controller, Message handler and host computer；The number of motor terminal voltage and stator current when described message handler includes being used to gather unloaded under the low frequency slow-speed of revolution According to collecting unit and the terminal voltage curve for drawing pitch motor no-load test, according to the equivalent electric of pitch drive motor Road and equation and the equivalent parameters of pitch motor draw the data processing unit of the emf curve of pitch motor no-load test, institute Data acquisition unit is stated to be connected with the data processing unit；Described host computer is connected with described servo controller, described message handler, and described host computer includes being used for Write motor operation instruction and read the control module of motor operating parameter information and for by emf curve and terminal voltage Index of the pressure difference as convergence degree between curve, the smaller evaluation module for showing that torque output capability is better of index are described Control module is connected with the servo controller, and the data processing unit is connected with the evaluation module.
- 2. test system as claimed in claim 1, it is characterised in that：Described data acquisition unit and data processing unit choosing With Beckhoff CX5020 and relevant mode analog quantity input and output I/O modules.
- 3. test system as claimed in claim 1 or 2, it is characterised in that：At described servo controller and described information Device is managed to communicate using CANopen with described host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720147228.2U CN206876318U (en) | 2017-02-17 | 2017-02-17 | A kind of pitch motor torque output capability test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720147228.2U CN206876318U (en) | 2017-02-17 | 2017-02-17 | A kind of pitch motor torque output capability test system |
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| Publication Number | Publication Date |
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| CN206876318U true CN206876318U (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720147228.2U Expired - Fee Related CN206876318U (en) | 2017-02-17 | 2017-02-17 | A kind of pitch motor torque output capability test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768532A (en) * | 2017-02-17 | 2017-05-31 | 浙江运达风电股份有限公司 | A kind of pitch motor torque output capability appraisal procedure and test system |
-
2017
- 2017-02-17 CN CN201720147228.2U patent/CN206876318U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768532A (en) * | 2017-02-17 | 2017-05-31 | 浙江运达风电股份有限公司 | A kind of pitch motor torque output capability appraisal procedure and test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200424 Address after: Group 1, Nanjie, Dongchuan Town, Yao'an County, Chuxiong Yi Autonomous Prefecture, Yunnan Province Patentee after: Sinohydro Yaoan New Energy Development Co., Ltd Address before: Hangzhou City, Zhejiang province 311106 Hangzhou Yuhang economic and Technological Development Zone (Qianjiang Economic Development Zone) wind Road No. 558 Patentee before: Zhejiang Windey Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20210217 |