CN113437916B - Starting method and device of double-fed asynchronous motor control system - Google Patents
Starting method and device of double-fed asynchronous motor control system Download PDFInfo
- Publication number
- CN113437916B CN113437916B CN202110653912.9A CN202110653912A CN113437916B CN 113437916 B CN113437916 B CN 113437916B CN 202110653912 A CN202110653912 A CN 202110653912A CN 113437916 B CN113437916 B CN 113437916B
- Authority
- CN
- China
- Prior art keywords
- voltage
- axis
- value
- rotor
- side converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/18—Estimation of position or speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/22—Current control, e.g. using a current control loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/34—Arrangements for starting
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
Abstract
The invention discloses a starting method and a starting device of a control system of a double-fed asynchronous motor, and belongs to the technical field of motors. The method firstly gives the given values of d-axis and q-axis voltages of the rotor through open loop
Collecting and calculating d and q axis current feedback values i corresponding to the rotor position when the motor is close to starting rdq And the reference current amplitude limit or the given value of the closed-loop control is used, a prime motor does not need to be installed to drag a motor to start or a switch operation mode is adopted, the starting process of the double-fed asynchronous motor is effectively simplified, and the direct starting of the double-fed asynchronous motor is realized.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a starting method and a starting device of a control system of a double-fed asynchronous motor.
Background
Energy development in China adheres to strategic routes of conservation development, clean development and safety development, a power system for ship propulsion at the present stage has remarkable development on energy conversion and distribution, and electrification becomes a development trend of a ship propulsion system. The development of the ship industry has important influence on global transportation and world economy, and the related technology of large ships is also considerably emphasized in the military field, which is an important embodiment of national military strength. In order to meet the increasing demand for electric power of ships, all-electric ships based on electric propulsion systems have gradually become the ship production standard of each large shipbuilding factory in the world, which is also the development direction of ships in the future.
Compared with a squirrel-cage asynchronous motor, the double-fed asynchronous motor has the advantages that slip power can be fed back, the capacity of a power converter can be adjusted, and the like. However, the doubly-fed asynchronous motor also has the defects of large starting current, limited speed regulation range, complex structure and the like. At present, there are many researches on starting methods of a double-fed asynchronous motor, and a conventional starting method of the double-fed asynchronous motor adopts a prime mover to drive or adopts an induction motor connection mode to start, wherein the prime mover needs to be additionally provided with an electric motor or other equipment to drive the double-fed asynchronous motor to start; the latter usually requires additional switching devices or algorithms for software controlled switching, both of which present the problem of relatively complex software and hardware for starting the doubly fed asynchronous motor.
Disclosure of Invention
The invention aims to provide a starting method and a starting device of a control system of a double-fed asynchronous motor, aiming at solving the problems that the starting of the existing double-fed asynchronous motor needs additional motors or switching equipment and the starting control is more complicated.
In order to achieve the above object, the present invention provides, in one aspect, a starting method for a doubly-fed asynchronous motor control system,
the doubly-fed asynchronous motor control system comprises: the system comprises a three-phase alternating current voltage regulator, a back-to-back power converter, a controller and a double-fed asynchronous motor. The input end of the three-phase alternating current voltage regulator is connected with a power grid, and the output end of the three-phase alternating current voltage regulator is connected with a grid-side converter. The grid-side converter outputs direct current voltage to be connected with a capacitor and a direct current bus in parallel. The stator of the double-fed asynchronous motor is connected with a three-phase alternating-current voltage regulator in a side mode, and the rotor of the double-fed asynchronous motor is connected with a rotor-side power converter in a side mode, so that the control of rotor current is achieved. Furthermore, the back-to-back power converter comprises a plurality of bridge arms and a direct-current bus capacitor, wherein each bridge arm comprises an upper switch tube and a lower switch tube; the emitter of the upper switch tube of the grid-side converter and the collector of the lower switch tube are connected as the input ends of bridge arms, and the input ends of the bridge arms are respectively connected with the output end of the three-phase voltage regulator; the emitter of an upper switch tube and the collector of a lower switch tube of the rotor-side power converter are connected to serve as the output ends of bridge arms, and the output ends of the bridge arms are respectively connected with one end of a rotor winding of the doubly-fed asynchronous motor; one end of the direct current bus capacitor is connected with the collector electrode of the switch tube on each bridge arm; and the other end of the direct current bus capacitor is connected with the emitting electrode of each bridge arm lower switch tube.
The starting method comprises the following steps:
(1) increasing the voltage of a direct current bus to a preset working value, giving d-axis and q-axis voltage reference values of a rotor, and calculating d-axis and q-axis currents of the rotor under an open loop when the three-phase voltage of the stator is at the critical starting voltage of the motor;
(2) setting the d-axis current and the q-axis current under the open loop as the amplitude limit value of a d-axis current reference value and the q-axis current reference value during the closed loop double-fed operation control respectively;
(3) and the motor increases the stator side voltage of the motor under the preset set value in a closed-loop double-fed control operation mode until the motor is started.
Further, raising the dc bus voltage to the preset operating value specifically includes:
(A1) collecting three-phase voltage at the stator side of the motor, and calculating to obtain a stator voltage vector angle theta 1 ；
(A2) According to the given value of the DC bus voltage
And the collected DC bus voltage u dc And calculating to obtain the d-axis current set value of the grid-side converter
Presetting set value of q-axis current of network side converter
Is zero;
(A3)collected three-phase current of grid-side converter
According to the stator voltage vector angle theta 1 Carrying out coordinate transformation to obtain a d-axis current feedback value i of the grid-side converter gd Q-axis current feedback value i gq Collected three-phase voltage u of grid-side converter gabc According to the stator voltage vector angle theta 1 Carrying out coordinate transformation to obtain a d-axis voltage feedback value u of the grid-side converter gd Q-axis voltage feedback value u gq ；
(A4) According to the d-axis current set value of the network side converter
q-axis current set point
And d-axis current feedback value i gd Q-axis current feedback value i gq And d-axis voltage feedback value u gd Q-axis voltage feedback value u gq And calculating to obtain the d-axis voltage set value of the grid-side converter
Given value of q-axis voltage
(A5) Given value of d-axis voltage of grid-side converter
Given value of q-axis voltage
According to stator voltage vector angle theta 1 Coordinate transformation is carried out to obtain the three-phase voltage given value of the grid-side converter
(A6) Using SPWM modulationGiven value of three-phase voltage of grid-side converter by algorithm
And generating a trigger pulse as a reference voltage to drive each switching tube in the grid-side converter, and controlling the voltage of the direct-current bus to rise to a preset working value.
Further, the operation of the closed-loop doubly-fed control specifically includes:
(B1) collecting three-phase voltage at the stator side of the motor, and calculating to obtain a stator voltage vector angle theta 1 ；
(B2) According to given value of motor speed
And the collected motor rotation speed omega r And calculating to obtain the d-axis current set value of the rotor side converter
(B3) The stator voltage vector angle θ 1 And the collected rotor position angle theta r Subtracting to obtain slip angle theta s Collected three-phase current i of rotor-side converter rabc According to the slip angle theta s Coordinate transformation is carried out to obtain a d-axis current feedback value i of the rotor side converter rd Q-axis current feedback value i rq ；
(B4) According to the d-axis current set value of the rotor side converter
q-axis current set point
And d-axis current feedback value i rd Q-axis current feedback value i rq And calculating to obtain the d-axis voltage set value of the rotor side converter
Given value of q-axis voltage
(B5) D-axis voltage set value of rotor side converter
Given value of q-axis voltage
According to the slip angle theta s Coordinate transformation is carried out to obtain the three-phase voltage given value of the rotor side converter
(B6) Rotor side converter three-phase voltage set value by adopting SPWM (sinusoidal pulse Width modulation) algorithm
And generating trigger pulses as reference voltage to drive each switching tube in the rotor-side converter, outputting three-phase voltage of a motor stator, and controlling the operation of the doubly-fed asynchronous motor.
Further, the calculation of the d-axis and q-axis currents of the rotor under the open loop comprises the following steps:
given value of d-axis and q-axis voltages of rotor
Obtaining the given voltage value of each phase winding through coordinate transformation
Comparing the voltage with a preset triangular wave, controlling the driving signals of each switching tube in the power converter at the rotor side to generate three-phase current i of the motor rotor rabc ；
When the three-phase voltage of the stator is critical starting voltage, the three-phase current i of the motor rotor is converted into the three-phase current i rabc Coordinate transformation is carried out to obtain d and q axis current feedback values i of the rotor rd 、i rq 。
Further, d-axis and q-axis voltage set values of rotor
Obtaining the given voltage value of each phase winding through coordinate transformation
The method specifically comprises the following steps:
collecting three-phase voltage u of stator sabc Obtaining stator voltage vector angle theta according to phase-locked loop algorithm 1 And is related to the rotor speed omega r Calculated rotor position angle theta r Subtracting to calculate the slip angle theta s (ii) a Given value of d-axis and q-axis voltages of rotor
According to the slip angle theta s Obtaining the given voltage value of each phase winding
Further, the method for controlling the driving signal of each switching tube in the rotor-side converter specifically comprises the following steps:
when the given value of the winding voltage is greater than the triangular carrier, the corresponding upper switching tube driving signal is at a high level, and the lower switching tube driving signal is at a low level; when the given value of the winding voltage is less than or equal to the triangular carrier, the corresponding upper switching tube driving signal is at a low level, and the lower switching tube driving signal is at a high level.
Furthermore, the frequency of the triangular wave is 10kHz, and the maximum value is bus voltage u dc Minimum value is negative bus voltage-u dc 。
In another aspect, the present invention provides a starting apparatus for a doubly-fed asynchronous motor control system, including:
a computer-readable storage medium and a processor;
the computer-readable storage medium is used for storing executable instructions;
the processor is configured to read executable instructions stored in the computer readable storage medium and execute the starting method of the doubly-fed asynchronous motor control system according to the first aspect of the present invention.
Through the technical scheme of the invention, compared with the prior art, the method firstly gives the given values of the d and q shaft voltages of the rotor through the open loop
Collecting and calculating d and q axis current feedback values i corresponding to the rotor position when the motor is close to starting rdq And the reference current amplitude limit or the given value of the closed-loop control is used, a prime motor does not need to be installed to drag a motor to start or a switch operation mode is adopted, the starting process of the double-fed asynchronous motor is effectively simplified, and the direct starting of the double-fed asynchronous motor is realized.
Drawings
FIG. 1 is a schematic diagram of a doubly-fed asynchronous motor control system;
FIG. 2 is a schematic diagram of a double-fed asynchronous motor control system grid-side converter current double closed loop control;
FIG. 3 is a schematic diagram of open loop control of a doubly fed asynchronous motor control system;
fig. 4 is a schematic diagram of rotor-side current double closed-loop control of a doubly-fed asynchronous motor control system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention provides a control system of a double-fed asynchronous motor, which comprises a three-phase alternating-current voltage regulator, the double-fed asynchronous motor, a back-to-back power conversion module, a pulse generation module, a driving module, a position sensor and a controller. As shown in fig. 1, one end of the grid-side power converter is connected to the output of the three-phase ac voltage regulator through an inductor, and the other end of the grid-side power converter is connected to the dc bus capacitor, and is configured to convert the three-phase ac voltage into a dc voltage. One end of the rotor side power converter is connected with the direct current bus, and the other end of the rotor side power converter is connected with the three-phase winding of the rotor of the double-fed asynchronous motor to provide three-phase alternating current for the rotor winding. The stator winding of the double-fed asynchronous motor is also directly connected with the output of the three-phase alternating current voltage regulator.
The starting method comprises the following steps:
(1) increasing the voltage of a direct current bus to a preset working value, giving d-axis and q-axis voltage reference values of a rotor, and calculating d-axis and q-axis currents of the rotor under an open loop when the three-phase voltage of the stator is at the critical starting voltage of the motor;
(2) setting the d-axis current and the q-axis current under the open loop as the amplitude limit value of a d-axis current reference value and the q-axis current reference value during the closed loop double-fed operation control respectively;
(3) and the motor increases the stator side voltage of the motor under the preset set value in a closed-loop double-fed control operation mode until the motor is started.
Specifically, the network-side power converter control block diagram is shown in fig. 2, and includes:
(1) the DC voltage regulator is based on the given value of DC bus voltage
And the DC voltage u collected by the bus voltage sensor dc Calculating to obtain a given value of d-axis component of the current on the network side by using a proportional-integral algorithm
Given value of q-axis component of current of grid-side converter
Is normally set to 0; therefore, given values of d and q axis components of the grid-side converter can be obtained;
(2) the three-phase alternating voltage collected by the output voltage sensor of the three-phase alternating voltage regulator is processed by a three-phase-locked loop algorithm to obtain a stator voltage angle theta 1 (ii) a The second rotating coordinate conversion module of the grid-side converter is used for converting three-phase alternating current i acquired by a three-phase current sensor of the grid-side converter gabc And stator voltage angle theta calculated by phase-locked loop 1 Obtaining feedback values i of d and q axis components of current of the network side converter through coordinate transformation calculation gdq ；
(3) The current regulator is based on d and q axis component set values of the current of the network side converter
And a feedback value i gdq Obtaining the given values of d and q axis voltages of the network side converter by using a proportional-integral algorithm and adding a cross coupling term
Specifically, the grid side converter d and q axis voltage given value calculation function is as follows:
wherein, the resistance term can be ignored in practice; in the formula, R g Is a net side resistance, i gdq Is the grid side converter current dq axis component, L g Is a series inductance, omega 1 For grid voltage angular frequency, u gd For the calculated d-axis voltage feedback value of the grid-side converter,
setting values of d and q axis voltages of the grid side converter;
(4) a first rotating coordinate transformation module of the grid-side converter is used for transforming the given value of the voltage of d and q axes of the grid-side converter
And stator voltage angle theta 1 Obtaining the three-phase voltage given value of the grid-side converter through coordinate transformation calculation
(5) The three-phase voltage given value is compared with a preset triangular wave through a carrier wave comparison pulse width modulation module, and a PWM (pulse width modulation) driving signal is input into a network for conversionA controller for controlling the action of the switch tube to generate a DC bus voltage u dc 。
The starting method of the double-fed asynchronous motor control system comprises an open loop link, and a control block diagram is shown in FIG. 3; and a closed-loop control link, a control block diagram of which is shown in fig. 4.
The starting process comprises the following steps:
open loop measurement of rotor current feedback value:
(1) open-loop direct given rotor d, q shaft voltage given value
The rotor side first coordinate transformation module calculates a stator voltage angle theta according to a phase-locked loop 1 And the collected rotor position angle theta r Subtracting the difference to be used as a coordinate transformation angle, and setting the d-axis voltage and the q-axis voltage of the rotor to be given values
Conversion to three-phase rotor voltage in three-phase stationary frame
(2) The three-phase rotor voltage set value is compared with a preset triangular wave through a carrier comparison pulse width modulation module, a PWM driving signal is input into a rotor side power converter to control the action of a switching tube, and a three-phase alternating current voltage u is generated at the rotor side rabc ；
(3) The rotor side second rotating coordinate transformation module is used for transforming the rotor side three-phase alternating current i according to the rotor side three-phase current sensor rabc And the stator voltage angle theta calculated by the phase-locked loop 1 And the collected rotor position angle theta r The angle of slip θ resulting from the subtraction s As a coordinate transformation angle, a feedback value i of the d and q axis components of the rotor current is obtained through coordinate transformation calculation rdq (ii) a Wherein, the rotor speed before starting in the open loop stage is zero, and the collected rotor position angle theta r Is always zero;
then starting is carried out under the closed loop of the rotating speed:
(5) the speed regulator setting the value according to the rotating speed
And the rotor speed omega acquired by the position sensor r Calculating to obtain a given value of a d-axis component of the side current of the rotor by using a proportional-integral algorithm
(6) The rotor side second rotating coordinate transformation module is used for transforming the rotor three-phase alternating current i acquired by the rotor three-phase current sensor rabc And angle of slip theta s Obtaining feedback values i of d and q axis components of rotor current through coordinate transformation calculation rdq ；
(7) The current regulator is based on the d and q axis components of rotor current
And a feedback value i rdq The given values of the d and q axis voltages of the rotor are obtained by using a proportional-integral algorithm and adding a cross coupling term
Specifically, the rotor d and q axis voltage given value calculation function is as follows:
wherein, the rotor resistance term can be ignored in the actual calculation; in the formula (I), the compound is shown in the specification,
is the leakage coefficient of the motor, L m The motor is mutual inductance, L s The motor being a stator inductor, L r The motor is a rotor inductor; r r Is rotor resistance, i rdq Is the rotor side current dq axis component, ω s Is the slip speed, omega 1 For grid voltage angular frequency, u s Is the voltage of the stator and is,
setting values of d and q axis voltages at the rotor side;
(8) a first rotating coordinate transformation module at the rotor side gives a value according to the d and q axis voltages of the rotor
Sum and slip angle θ s Coordinate transformation to obtain three-phase voltage set value of rotor
(9) The three-phase rotor voltage set value is compared with a preset triangular wave through a carrier comparison pulse width modulation module, a PWM driving signal is input into a rotor side power converter to control the action of a switching tube, and a three-phase alternating current voltage u is generated at the rotor side rabc ；
(10) Outputting the rotating speed regulator when starting
The clipping is set to be small, and can be set to 0.5; rotor current q-axis component setpoint
Set to 0;
(11) firstly, regulating the output of a three-phase alternating current voltage regulator to be a smaller value, and setting the voltage of an output line to be 10V;
(12) running a power converter algorithm on the network side to enable the voltage of the direct current bus to rise to a value that the motor can be started, and setting the voltage to be 70V;
(13) the output line voltage of the three-phase alternating current voltage regulator is regulated to be increased to be close to the starting stator voltage, and the output line voltage can be regulated to 40V;
(14) the feedback value i of the d-axis component of the rotor current obtained by calculation in the open loop stage rd As the reference value of the output amplitude limit of the rotating speed regulator;
(15) a feedback value i of a rotor current q-axis component obtained by calculation in an open loop stage rq Given value as rotor current q-axis component
(16) Gradually adjusting the output line voltage of the three-phase alternating current voltage regulator to rise until the motor is started;
(17) after the motor starts, it will operate in a doubly-fed manner according to the rotor-side power converter control method.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A method for starting a doubly-fed asynchronous motor control system, comprising the steps of:
(1) increasing the voltage of a direct current bus to a preset working value, giving d-axis and q-axis voltage reference values of a rotor, and calculating d-axis and q-axis currents of the rotor under an open loop when the three-phase voltage of the stator is at the critical starting voltage of the motor; the step of increasing the voltage of the direct-current bus to a preset working value specifically comprises the following steps:
(A1) collecting three-phase voltage at the stator side of the motor, and calculating to obtain a stator voltage vector angle theta 1 ；
(A2) According to the given value of the DC bus voltage
And the collected DC bus voltage u dc And calculating to obtain the d-axis current set value of the grid-side converter
Presetting set value of q-axis current of network side converter
Is zero;
(A3) collected three-phase current i of grid-side converter gabc According to the stator voltage vectorAngle theta 1 Carrying out coordinate transformation to obtain a d-axis current feedback value i of the grid-side converter gd Q-axis current feedback value i gq Collected three-phase voltage u of grid-side converter gabc According to the stator voltage vector angle theta 1 Carrying out coordinate transformation to obtain a d-axis voltage feedback value u of the grid-side converter gd Q-axis voltage feedback value u gq ；
(A4) According to the d-axis current set value of the network side converter
q-axis current set point
And d-axis current feedback value i gd Q-axis current feedback value i gq And d-axis voltage feedback value u gd Q-axis voltage feedback value u gq And calculating to obtain the d-axis voltage set value of the grid-side converter
Given value of q-axis voltage
Adding a cross-coupling term;
(A5) given value of d-axis voltage of grid-side converter
Given value of q-axis voltage
According to stator voltage vector angle theta 1 Coordinate transformation is carried out to obtain the three-phase voltage given value of the grid-side converter
(A6) Setting three-phase voltage of grid-side converter to be given value by adopting SPWM (sinusoidal pulse Width modulation) algorithm
Generating trigger pulses as reference voltages to drive each switching tube in the grid-side converter, and controlling the voltage of the direct-current bus to rise to a preset working value;
the calculation of the d-axis and q-axis currents of the rotor under the open loop comprises the following steps:
given value of d-axis and q-axis voltages of rotor
Obtaining the given voltage value of each phase winding through coordinate transformation
Comparing the voltage with a preset triangular wave, controlling the driving signals of each switching tube in the power converter at the rotor side to generate three-phase current i of the motor rotor rabc ；
When the three-phase voltage of the stator is critical starting voltage, the three-phase current i of the motor rotor is converted into the three-phase current i rabc Coordinate transformation is carried out to obtain d and q axis current feedback values i of the rotor rd 、i rq ；
Given value of d-axis and q-axis voltages of rotor
Obtaining the given voltage value of each phase winding through coordinate transformation
The method specifically comprises the following steps:
collecting three-phase voltage u of stator sabc Obtaining stator voltage vector angle theta according to phase-locked loop algorithm 1 And is related to the rotor speed omega r Calculated rotor position angle theta r Subtracting to calculate the slip angle theta s (ii) a Given value of d-axis and q-axis voltages of rotor
According to the slip angle theta s Obtaining the given voltage value of each phase winding
(2) Setting the d-axis current and the q-axis current under the open loop as the amplitude limit value of a d-axis current reference value and the q-axis current reference value during the closed loop double-fed operation control respectively;
(3) and the motor increases the stator side voltage of the motor under the setting in a closed-loop double-fed control operation mode until the motor is started.
2. A starting method according to claim 1, characterized in that the closed-loop doubly-fed control operation comprises in particular:
(B1) collecting three-phase voltage at the stator side of the motor, and calculating to obtain a stator voltage vector angle theta 1 ；
(B2) According to given value of motor speed
And the collected motor rotation speed omega r And calculating to obtain the d-axis current set value of the rotor side converter
(B3) The stator voltage vector angle θ 1 And the collected rotor position angle theta r Subtracting to obtain slip angle theta s Collected three-phase current i of rotor-side converter rabc According to the slip angle theta s Coordinate transformation is carried out to obtain a d-axis current feedback value i of the rotor side converter rd Q-axis current feedback value i rq ；
(B4) According to the d-axis current set value of the rotor side converter
q-axis current set point
And d-axis current feedback value i rd Q-axis current feedback value i rq Calculating to obtain the rotor sideConverter d-axis voltage set point
Given value of q-axis voltage
Adding a cross-coupling term;
(B5) d-axis voltage set value of rotor side converter
Given value of q-axis voltage
According to the slip angle theta s Coordinate transformation is carried out to obtain the three-phase voltage given value of the rotor side converter
(B6) Rotor side converter three-phase voltage set value by adopting SPWM (sinusoidal pulse Width modulation) algorithm
And generating trigger pulses as reference voltage to drive each switching tube in the rotor-side converter, outputting three-phase voltage of a motor stator, and controlling the operation of the doubly-fed asynchronous motor.
3. The starting method according to claim 1, wherein the driving signals for the switching tubes in the rotor-side converter are controlled by:
when the given value of the winding voltage is greater than the triangular carrier, the corresponding upper switching tube driving signal is at a high level, and the lower switching tube driving signal is at a low level; when the given value of the winding voltage is less than or equal to the triangular carrier, the corresponding upper switching tube driving signal is at a low level, and the lower switching tube driving signal is at a high level.
4. Starting method according to claim 3The frequency of the triangular wave is 10kHz, and the maximum value is bus voltage u dc Minimum value is negative bus voltage-u dc 。
5. A starting device for a doubly-fed asynchronous motor control system, comprising:
a computer-readable storage medium and a processor;
the computer-readable storage medium is used for storing executable instructions;
the processor is configured to read executable instructions stored in the computer readable storage medium and execute the startup method of the doubly-fed asynchronous motor control system of any of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110653912.9A CN113437916B (en) | 2021-06-11 | 2021-06-11 | Starting method and device of double-fed asynchronous motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110653912.9A CN113437916B (en) | 2021-06-11 | 2021-06-11 | Starting method and device of double-fed asynchronous motor control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113437916A CN113437916A (en) | 2021-09-24 |
| CN113437916B true CN113437916B (en) | 2022-08-05 |
Family
ID=77755785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110653912.9A Active CN113437916B (en) | 2021-06-11 | 2021-06-11 | Starting method and device of double-fed asynchronous motor control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113437916B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102318156A (en) * | 2008-12-19 | 2012-01-11 | 智能电机股份公司 | Method for operation of a permanent magnet synchronous machine, and a device in an electric system comprising such a machine |
| CN103217641A (en) * | 2013-04-09 | 2013-07-24 | 许继集团有限公司 | Device and method for testing CROWBAR circuit of wind power converter |
| CN105656073A (en) * | 2014-11-13 | 2016-06-08 | 南车株洲电力机车研究所有限公司 | Aerogenerator current transformer and control method thereof |
| CN106953573A (en) * | 2017-03-13 | 2017-07-14 | 湖南利能科技股份有限公司 | A kind of Speed identification method of brushless dual-feed motor |
| CN112087166A (en) * | 2020-09-17 | 2020-12-15 | 华中科技大学 | Alternating current-direct current hybrid double-fed asynchronous full-electric ship electric propulsion system and control method |
-
2021
- 2021-06-11 CN CN202110653912.9A patent/CN113437916B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102318156A (en) * | 2008-12-19 | 2012-01-11 | 智能电机股份公司 | Method for operation of a permanent magnet synchronous machine, and a device in an electric system comprising such a machine |
| CN103217641A (en) * | 2013-04-09 | 2013-07-24 | 许继集团有限公司 | Device and method for testing CROWBAR circuit of wind power converter |
| CN105656073A (en) * | 2014-11-13 | 2016-06-08 | 南车株洲电力机车研究所有限公司 | Aerogenerator current transformer and control method thereof |
| CN106953573A (en) * | 2017-03-13 | 2017-07-14 | 湖南利能科技股份有限公司 | A kind of Speed identification method of brushless dual-feed motor |
| CN112087166A (en) * | 2020-09-17 | 2020-12-15 | 华中科技大学 | Alternating current-direct current hybrid double-fed asynchronous full-electric ship electric propulsion system and control method |
Non-Patent Citations (2)
| Title |
|---|
| Impedance-Based Stability Analysis of Less Power Electronics Integrated Electric Shipboard Propulsion System Considering Operation Mode, PLL, and DC-Bus Voltage Control Effect;Kai Ni等;《IEEE Transactions on Vehicular Technology》;20210210;第70卷(第3期);第1-5页 * |
| Optimization of the control of a doubly fed induction machine;Jules Gillet等;《2013 IEEE 11th International Workshop of Electronics, Control, Measurement, Signals and their application to Mechatronics》;20131031;第2219-2230页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113437916A (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Amrane et al. | Design and implementation of high performance field oriented control for grid-connected doubly fed induction generator via hysteresis rotor current controller | |
| JP5246508B2 (en) | Control device for motor drive device | |
| JP3435474B2 (en) | Variable speed windmill | |
| CN110752795B (en) | Derating control method and device for permanent magnet synchronous motor and permanent magnet synchronous motor | |
| WO2017198042A1 (en) | Direct-current bus voltage fluctuation suppression method and control method for dual-pwm current converter | |
| CN110611331B (en) | Method for supporting grid frequency by grid-connected power electronic equipment | |
| JP2017192197A (en) | Control device for ac electric motor | |
| CN108880384B (en) | Modulation model prediction control method and system of brushless doubly-fed induction motor | |
| CN113691177B (en) | Bus voltage control method for electrolytic capacitor-free permanent magnet synchronous motor driving system | |
| Izumi et al. | A control method for maximum power point tracking of a PMSG-based WECS using online parameter identification of wind turbine | |
| CN108448971B (en) | Control system of brushless doubly-fed generator and model prediction current control method | |
| CN108039843B (en) | Stator frequency control method of DFIG-DC system | |
| CN109347392B (en) | Instantaneous power decoupling control method for open-winding permanent magnet synchronous motor | |
| CN105099320B (en) | Method and device for controlling output active power of permanent magnet direct-drive wind driven generator | |
| CN113517696A (en) | Harmonic elimination equipment of island mode open winding double-fed wind power generation micro-grid system | |
| CN113437916B (en) | Starting method and device of double-fed asynchronous motor control system | |
| CN112217238A (en) | Brushless doubly-fed generator system and control method thereof | |
| Popescu et al. | Synthesis of rotor field-orientation control for induction traction motor | |
| Chikh et al. | A novel fixed-switching-frequency DTC for PMSM drive with low torque and flux ripple based on Sinusoidal Pulse With Modulation and predictive controller | |
| CN112448409A (en) | Brushless double-fed motor low-voltage ride-through technology based on fractional order sliding mode control | |
| CN113141139B (en) | Five-closed-loop control method and system for double three-phase permanent magnet motor | |
| CN109039206B (en) | Traction motor control system, control method, and computer-readable storage medium | |
| CN108988720B (en) | Three-phase asynchronous motor controller based on slip automatic optimization and control method | |
| JP2016111810A (en) | Control circuit for controlling inverter circuit, and inverter device with control circuit | |
| CN107872172B (en) | Starting method of closed-loop and V/F controlled motor under MMC frequency converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |