CN113572405A - Sensorless space vector control method and system for low-voltage ceiling fan and electronic equipment - Google Patents
Sensorless space vector control method and system for low-voltage ceiling fan and electronic equipment Download PDFInfo
- Publication number
- CN113572405A CN113572405A CN202110756751.6A CN202110756751A CN113572405A CN 113572405 A CN113572405 A CN 113572405A CN 202110756751 A CN202110756751 A CN 202110756751A CN 113572405 A CN113572405 A CN 113572405A
- Authority
- CN
- China
- Prior art keywords
- current
- alpha
- beta
- phase
- module
- 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.)
- Pending
Links
- 239000013598 vector Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004364 calculation method Methods 0.000 claims abstract description 39
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 38
- 230000003068 static effect Effects 0.000 claims description 25
- 230000009466 transformation Effects 0.000 claims description 19
- 238000004590 computer program Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- H02P21/22—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
- H02P21/14—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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The embodiment of the disclosure provides a sensorless space vector control method and system for a low-voltage ceiling fan and electronic equipment, wherein the vector control method comprises the following steps: the method comprises a current calculation link, a position measurement link, a reference current calculation link, a PI control link and an SVPWM calculation link. By adopting the method of the embodiment of the disclosure, the motor can be started without reverse rotation, shaking, 360-degree no dead angle, smooth starting current and overshoot, and the utilization rate of the voltage is 15% higher than that of the traditional sine wave driving voltage.
Description
Technical Field
The present disclosure relates to the field of electrical devices, and in particular, to a sensorless space vector control method and system for a low-voltage ceiling fan, and an electronic device.
Background
With the continuous development of electrical equipment technology, BLDCM (Brushless Direct Current Motor) has been widely used. The start control technique of the BLDCM plays an important role in the practical application of the BLDCM-free technique, and is a key technique for determining the success or failure of the start of the BLDCM. And along with the deep popularization of energy conservation and emission reduction, the energy conservation of the motor is imperative. Therefore, the frequency conversion control technology is also gradually applied to motor driving technologies, such as household appliances like a floor fan, a ceiling fan, a refrigerator, and a washing machine. The BLDCM square wave frequency conversion is an early PWM temporary wave frequency conversion technology, and the second generation frequency conversion is a common sine wave frequency conversion drive suitable for a PMSM motor. Vector control is a novel technical scheme which is used in recent years, and has a plurality of pain points and difficulties which need to be overcome. The motor starting scheme on the existing market mainly comprises forced positioning and three-section starting, the mode has high starting noise, sometimes has a reversal phenomenon, is unstable in starting, has the problems of starting reversal, shaking, current overshoot and the like, has great hidden danger in starting success rate and starting stability and reliability, and is poor in user experience.
Disclosure of Invention
In view of the above, embodiments of the present disclosure provide a sensorless space vector control method for a low-voltage ceiling fan, which at least partially solves the problems in the prior art.
In a first aspect, an embodiment of the present disclosure provides a sensorless space vector control method for a low-voltage ceiling fan, where the vector control method includes: a current calculation link, a position measurement link, a reference current calculation link, a PI control link and an SVPWM calculation link;
the current calculation link comprises the step of obtaining alpha-axis current I according to two-phase current conversionαAnd beta axis current Iβ；
The position measuring and calculating link comprises a current I of a two-phase static coordinate system passing through the input and output quantitiesαCalculating the I beta and the voltages U alpha and U beta to obtain an included angle theta between an output vector and an alpha axis of a static coordinate system;
performing PARK conversion on the currents I alpha and I beta of the two-phase static coordinate system to obtain currents Id and Iq of a rotating coordinate system;
the reference current calculation link comprises the steps of carrying out PI regulation by combining the actual rotating speed and the target rotating speed of the motor to obtain reference current iq;
the PI control link comprises a reference voltage Uq and a reference voltage Ud which are obtained through PI regulation;
the SVPWM calculation link comprises the steps of carrying out reverse park conversion on Ud and Uq to obtain Ualpha and Ubeta, and carrying out SVPWM calculation on the Ualpha and the Ubeta to obtain sector information and three pairs of bridge arm duty ratio information U, V and W; and finally, the three-phase inverter bridge control circuit outputs a control signal to drive the motor to operate.
According to a specific implementation manner of the embodiment of the present disclosure, the step of obtaining the α -axis current I α and the β -axis current I β according to the two-phase current transformation includes:
obtaining two-phase current parameters Iu and Iv, and obtaining a third-phase current Iw through two-phase current calculation;
and performing Clark conversion on the three-phase currents Iu, Iv and Iw to obtain two-phase stationary coordinate system currents I alpha and I beta.
According to a specific implementation manner of the embodiment of the present disclosure, the reference current calculation step includes a calculation manner of obtaining an actual rotation speed of the motor in the reference current iq by performing PI adjustment in combination with the actual rotation speed and the target rotation speed of the motor, and the calculation manner is as follows:
and calculating the actual speed omega of the motor as delta theta/delta t through an included angle theta between the output vector and the axis alpha of the static coordinate system.
According to a specific implementation manner of the embodiment of the present disclosure, the PI control link includes a step of obtaining a reference voltage Uq and a reference voltage Ud through PI regulation, including:
comparing the set reference current iq with the actual current iq to obtain a current error (delta iq), and carrying out PI (proportional integral) adjustment on the delta iq to obtain a reference voltage Uq;
and setting id ═ 0 as a reference value of the D-axis current, comparing id ═ with the actual id to obtain Δ id, and performing PI regulation on Δ id to obtain a reference voltage Ud.
According to a specific implementation manner of the embodiment of the present disclosure, the formula of the PARK transformation is:
the formula of the inverse PARK transformation is as follows:
according to one particular implementation of the embodiments of the present disclosure,
the Clark transformation formula is:
in a second aspect, the embodiment of the present disclosure provides a sensorless space vector control system for a low-voltage ceiling fan, which includes a current sensor module, a Clark transformation module, a position measurement module, a Park transformation module, a PI control module, an inverse Park transformation module, and an SVPWM module;
the current sensor module is used for acquiring two-phase output currents Iu and Iv and calculating to obtain Iw by utilizing the two-phase output currents Iu and Iv;
the Clark conversion module is used for calculating three-phase output currents Iu, Iv and Iw in the Clark conversion module to obtain alpha-axis current I alpha and beta-axis current I beta under a two-phase static coordinate system and inputting the alpha-axis current I alpha and the beta-axis current I beta into the PARK conversion module;
the position measuring and calculating module is used for calculating an included angle theta between an output vector and an alpha axis of the static coordinate system through currents I alpha and I beta and voltages U alpha and U beta of the two-phase static coordinate system of the input and output quantities
The Park conversion module is used for carrying out Park conversion on the alpha axis current I alpha and the beta axis current I beta under the two-phase static coordinate system to obtain currents Id and Iq of a rotating coordinate system;
the PI control module is used for obtaining a reference voltage Uq and a reference voltage Ud through PI regulation;
the inverse Park transformation module is used for inputting Ud and Uq into the inverse Park transformation module to be operated to obtain Ualpha and Ubeta;
and the SVPWM module is used for carrying out SVPWM calculation on the Ualpha and the Ubeta to obtain sector information and three pairs of bridge arm duty ratio information U, V and W and outputting the sector information and the three pairs of bridge arm duty ratio information U, V and W to the three-phase inverter bridge control circuit so as to output control signals to drive the motor to operate.
According to a specific implementation manner of the embodiment of the present disclosure, the PI control module is configured to compare a set reference current iq with an actual current iq to obtain a current error Δ iq, and perform PI adjustment on the reference current iq to obtain a reference voltage Uq;
and the PI control module is also used for comparing id with actual id to obtain delta id when setting id 0 as a reference value of the D-axis current, and then carrying out PI regulation on the delta id to obtain a reference voltage Ud.
In a third aspect, an embodiment of the present disclosure further provides an electronic device, where the electronic device includes:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the low pressure ceiling fan sensorless space vector control method of the first aspect or any implementation of the first aspect.
In a fourth aspect, the disclosed embodiments also provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the low-voltage ceiling fan sensorless space vector control method of the first aspect or any of the foregoing implementation manners of the first aspect.
In a fifth aspect, the disclosed embodiments also provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the low pressure ceiling fan sensorless space vector control method of the foregoing first aspect or any implementation manner of the first aspect.
The sensorless space vector control method of the low-voltage ceiling fan in the embodiment of the disclosure comprises the following steps: a current calculation link, a position measurement link, a reference current calculation link, a PI control link and an SVPWM calculation link; the current calculation link comprises an alpha axis current I alpha and a beta axis current I beta which are obtained according to two-phase current conversion; the position measuring and calculating link comprises the step of calculating an included angle theta between an output vector and an alpha axis of a static coordinate system through currents I alpha and I beta and voltages U alpha and U beta of the two-phase static coordinate system of the input and output quantities; performing PARK conversion on the currents I alpha and I beta of the two-phase static coordinate system to obtain currents Id and Iq of a rotating coordinate system; the reference current calculation link comprises the steps of carrying out PI regulation by combining the actual rotating speed and the target rotating speed of the motor to obtain reference current iq; the PI control link comprises the steps of comparing a set reference current iq with an actual current iq to obtain a current error delta iq, and carrying out PI regulation on the delta iq to obtain a reference voltage Uq; in addition, setting id ═ 0 as a reference value of the D-axis current, comparing id with the actual id to obtain Δ id, and then performing PI regulation on Δ id to obtain a reference voltage Ud; the SVPWM calculation link comprises the steps of carrying out reverse park conversion on Ud and Uq to obtain Ualpha and Ubeta, and carrying out SVPWM calculation on the Ualpha and the Ubeta to obtain sector information and three pairs of bridge arm duty ratio information U, V and W; and finally, the three-phase inverter bridge control circuit outputs a control signal to drive the motor to operate. By adopting the method of the embodiment of the disclosure, the motor can be started without reverse rotation, shaking, 360-degree no dead angle, smooth starting current and overshoot, and the utilization rate of the voltage is 15% higher than that of the traditional sine wave driving voltage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a sensorless space vector control method for a low-voltage ceiling fan according to an embodiment of the present disclosure;
FIG. 2 is a block diagram of a mechanism for sensorless space vector control of a low-voltage ceiling fan according to an embodiment of the present disclosure;
fig. 3 is a voltage space vector diagram.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
The embodiment of the disclosure provides a sensorless space vector control method for a low-voltage ceiling fan. The message sending method provided by the embodiment can be executed by a computing device, the computing device can be implemented as software, or implemented as a combination of software and hardware, and the computing device can be integrated in a server, a terminal device and the like.
Referring to fig. 1 and 2, a sensorless space vector control method for a low-voltage ceiling fan according to an embodiment of the present disclosure includes:
the current calculation link comprises an alpha axis current I alpha and a beta axis current I beta which are obtained according to two-phase current conversion;
the position measuring and calculating link comprises the step of calculating an included angle theta between an output vector and an alpha axis of a static coordinate system through currents I alpha and I beta and voltages U alpha and U beta of the two-phase static coordinate system of the input and output quantities;
performing PARK conversion on the currents I alpha and I beta of the two-phase static coordinate system to obtain currents Id and Iq of a rotating coordinate system;
the formula of the PARK transformation is:
the reference current calculation link comprises the steps of carrying out PI regulation by combining the actual rotating speed and the target rotating speed of the motor to obtain reference current iq;
the PI control link comprises the steps of comparing a set reference current iq with an actual current iq to obtain a current error delta iq, and carrying out PI regulation on the delta iq to obtain a reference voltage Uq;
in addition, setting id ═ 0 as a reference value of the D-axis current, comparing id with the actual id to obtain Δ id, and then performing PI regulation on Δ id to obtain a reference voltage Ud;
the SVPWM calculation link comprises the steps of carrying out reverse park conversion on Ud and Uq to obtain Ualpha and Ubeta, and carrying out SVPWM calculation on the Ualpha and the Ubeta to obtain sector information and three pairs of bridge arm duty ratio information U, V and W; and finally, the three-phase inverter bridge control circuit outputs a control signal to drive the motor to operate.
Wherein the inverse PARK transform has the formula:
the vector control method adopted by the embodiment of the disclosure accurately detects the initial angle of the motor to directly start in a closed loop, realizes the stable starting of the motor by the method of detecting the initial position angle, and enables the starting of the whole motor to be smoother without overshoot by carrying out accurate current control on different speed sections.
Specifically, in this embodiment, two-phase currents Iu and Iv are collected by a current sensor module, and then a third phase current Iw is calculated by using Iu + Iv + Iw as 0; the current sensor module is connected with the Clark conversion module, three-phase current is transmitted to the Clark conversion module through the current sensor module, and Clark conversion is carried out on the three-phase current Iu, Iv and Iw to obtain two-phase static coordinate system current I alpha and I beta; the Clark transformation formula is:
the Clark conversion module is connected with the Park conversion module and is used for carrying out Park conversion on the currents I alpha and I beta of the two-phase static coordinate system to obtain currents Id and Iq of the rotating coordinate system; the position estimation module estimates angle information theta, theta being-Arctan (U alpha/U beta) through currents I alpha and I beta of the two-phase static coordinate system of the input and output quantity and voltages U alpha and U beta; the position estimation of the motor in the embodiment of the present disclosure is different from the prior art in that the embodiment of the present disclosure is based on a sensorless method, and the angle of the motor is not detected by a sensor, but the position estimation of the motor is performed according to parameters of current and voltage.
Calculating the motor speed omega through the angle information theta, wherein omega is delta theta/delta t; the PI control module compares the target rotating speed with the actual rotating speed and then performs PI regulation to obtain reference current iq; comparing the reference iq with the actual iq to obtain a current error (delta iq) and carrying out PI regulation to obtain a reference voltage Uq; usually, the default id ═ 0 is the reference value of the D-axis current, Δ id is obtained by comparing the reference value with the actual id, and then PI adjustment is performed to obtain a reference voltage Ud;
inverse Park transformation module carries out inverse Park transformation on Ud and Uq to obtain Ualpha and Ubeta
The SVPWM module performs SVPWM calculation on the Ualpha and the Ubeta to obtain sector information and three pairs of bridge arm duty ratio information U, V and W; finally, PWM control information is output to a three-phase inverter bridge control circuit
It should be noted that the voltage space vector includes 6 non-zero vectors U1(001)、U2(010)、U3(011)、U4(100)、U5(101)、U6(110) And two zero vectors U0(000)、U7(111) Mapping the 8 combined basic space voltage vectors into the complex plane as shown in fig. 3, the voltage space vector diagram shown in the figure can be obtained, and the voltage space vector diagram divides the complex plane into 6 areas called sectors.
In FIG. 3, U1＝Uβ；
Definition of U1＝>0, then a equals 1, otherwise a equals 0;
definition of U2>0, then B equals 1, otherwise B equals 0;
definition of U3>0, then C is 1, otherwise C is 0;
let N be 4C +2B + A
| N | 3 | 1 | 5 | 4 | 6 | 2 |
| Sector area | Ⅰ | Ⅱ | Ⅲ | Ⅳ | Ⅴ | Ⅵ |
In addition, an embodiment of the present disclosure also provides an electronic device, which includes:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the low pressure ceiling fan sensorless space vector control method of the foregoing method embodiments.
The disclosed embodiments also provide a non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the low pressure ceiling fan sensorless space vector control method of the foregoing method embodiments.
The disclosed embodiments also provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the low pressure ceiling fan sensorless space vector control method of the aforementioned method embodiments.
It should be noted that the computer readable medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: acquiring at least two internet protocol addresses; sending a node evaluation request comprising the at least two internet protocol addresses to node evaluation equipment, wherein the node evaluation equipment selects the internet protocol addresses from the at least two internet protocol addresses and returns the internet protocol addresses; receiving an internet protocol address returned by the node evaluation equipment; wherein the obtained internet protocol address indicates an edge node in the content distribution network.
Alternatively, the computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: receiving a node evaluation request comprising at least two internet protocol addresses; selecting an internet protocol address from the at least two internet protocol addresses; returning the selected internet protocol address; wherein the received internet protocol address indicates an edge node in the content distribution network.
Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of a unit does not in some cases constitute a limitation of the unit itself, for example, the first retrieving unit may also be described as a "unit for retrieving at least two internet protocol addresses".
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A sensorless space vector control method for a low-voltage ceiling fan is characterized by comprising the following steps: a current calculation link, a position measurement link, a reference current calculation link, a PI control link and an SVPWM calculation link;
the current calculation link comprises the step of obtaining alpha-axis current I according to two-phase current conversionαAnd beta axis current Iβ；
The position measuring and calculating link comprises a current I of a two-phase static coordinate system passing through the input and output quantitiesαCalculating the I beta and the voltages U alpha and U beta to obtain an included angle theta between an output vector and an alpha axis of a static coordinate system;
performing PARK conversion on the currents I alpha and I beta of the two-phase static coordinate system to obtain currents Id and Iq of a rotating coordinate system;
the reference current calculation link comprises the steps of carrying out PI regulation by combining the actual rotating speed and the target rotating speed of the motor to obtain reference current iq;
the PI control link comprises a reference voltage Uq and a reference voltage Ud which are obtained through PI regulation;
the SVPWM calculation link comprises the steps of carrying out reverse park conversion on Ud and Uq to obtain Ualpha and Ubeta, and carrying out SVPWM calculation on the Ualpha and the Ubeta to obtain sector information and three pairs of bridge arm duty ratio information U, V and W; and finally, the three-phase inverter bridge control circuit outputs a control signal to drive the motor to operate.
2. The sensorless space vector control method of a low-voltage ceiling fan of claim 1, wherein the step of obtaining the α -axis current I α and the β -axis current I β from the two-phase current transformation comprises:
obtaining two-phase current parameters Iu and Iv, and obtaining a third-phase current Iw through two-phase current calculation;
and performing Clark conversion on the three-phase currents Iu, Iv and Iw to obtain two-phase stationary coordinate system currents I alpha and I beta.
3. The sensorless space vector control method of the low-voltage ceiling fan of claim 1, wherein the reference current calculation step includes a calculation manner of calculating the actual rotation speed of the motor in the reference current iq by performing PI adjustment in combination with the actual rotation speed and the target rotation speed of the motor, and the calculation manner is as follows:
and calculating the actual speed omega of the motor as delta theta/delta t through an included angle theta between the output vector and the axis alpha of the static coordinate system.
4. The sensorless space vector control method of the low-voltage ceiling fan of claim 1, wherein the PI control link comprises a step of obtaining a reference voltage Uq and a reference voltage Ud through PI regulation, comprising:
comparing the set reference current iq with the actual current iq to obtain a current error (delta iq), and carrying out PI (proportional integral) adjustment on the delta iq to obtain a reference voltage Uq;
and setting id ═ 0 as a reference value of the D-axis current, comparing id ═ with the actual id to obtain Δ id, and performing PI regulation on Δ id to obtain a reference voltage Ud.
5. The sensorless space vector control method of a low-pressure ceiling fan of claim 1, wherein the PARK transformation formula is:
the formula of the inverse PARK transformation is as follows:
6. the sensorless space vector control method of a low-voltage ceiling fan of claim 2, wherein the Clark transformation formula is:
7. a sensorless space vector control system of a low-voltage ceiling fan is characterized by comprising a current sensor module, a Clark conversion module, a position measuring module, a Park conversion module, a PI control module, an inverse Park conversion module and an SVPWM module;
the current sensor module is used for acquiring two-phase output currents Iu and Iv and calculating to obtain Iw by utilizing the two-phase output currents Iu and Iv;
the Clark conversion module is used for calculating three-phase output currents Iu, Iv and Iw in the Clark conversion module to obtain alpha-axis current I alpha and beta-axis current I beta under a two-phase static coordinate system and inputting the alpha-axis current I alpha and the beta-axis current I beta into the PARK conversion module;
the position measuring and calculating module is used for calculating an included angle theta between an output vector and an alpha axis of the static coordinate system through currents I alpha and I beta and voltages U alpha and U beta of the two-phase static coordinate system of the input and output quantities
The Park conversion module is used for carrying out Park conversion on the alpha axis current I alpha and the beta axis current I beta under the two-phase static coordinate system to obtain currents Id and Iq of a rotating coordinate system;
the PI control module is used for obtaining a reference voltage Uq and a reference voltage Ud through PI regulation;
the inverse Park transformation module is used for inputting Ud and Uq into the inverse Park transformation module to be operated to obtain Ualpha and Ubeta;
and the SVPWM module is used for carrying out SVPWM calculation on the Ualpha and the Ubeta to obtain sector information and three pairs of bridge arm duty ratio information U, V and W and outputting the sector information and the three pairs of bridge arm duty ratio information U, V and W to the three-phase inverter bridge control circuit so as to output control signals to drive the motor to operate.
8. The sensorless space vector control system of the low-voltage ceiling fan of claim 7, wherein the PI control module is configured to compare a set reference current iq with an actual current iq to obtain a current error Δ iq, and perform PI adjustment on Δ iq to obtain a reference voltage Uq;
and the PI control module is also used for comparing id with actual id to obtain delta id when setting id 0 as a reference value of the D-axis current, and then carrying out PI regulation on the delta id to obtain a reference voltage Ud.
9. An electronic device, characterized in that the electronic device comprises:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the low pressure ceiling fan sensorless space vector control method of any of the preceding claims 1-6.
10. A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the low pressure ceiling fan sensorless space vector control method of any of the preceding claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110756751.6A CN113572405A (en) | 2021-07-05 | 2021-07-05 | Sensorless space vector control method and system for low-voltage ceiling fan and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110756751.6A CN113572405A (en) | 2021-07-05 | 2021-07-05 | Sensorless space vector control method and system for low-voltage ceiling fan and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113572405A true CN113572405A (en) | 2021-10-29 |
Family
ID=78163633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110756751.6A Pending CN113572405A (en) | 2021-07-05 | 2021-07-05 | Sensorless space vector control method and system for low-voltage ceiling fan and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113572405A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977012A (en) * | 2010-11-09 | 2011-02-16 | 上海川邻精密配件有限公司 | Method and device for directionally controlling wheels in sensorless magnetic field |
| JP2012130100A (en) * | 2010-12-13 | 2012-07-05 | Samsung Yokohama Research Institute Co Ltd | Motor controller and motor control method |
| CN106685301A (en) * | 2017-01-05 | 2017-05-17 | 江苏中科君芯科技有限公司 | BLDCM control system and method based on improved sliding mode observer |
| CN110752801A (en) * | 2019-10-18 | 2020-02-04 | 峰岹科技（深圳）有限公司 | Grass trimmer control method and device and grass trimmer |
| CN111600517A (en) * | 2020-06-12 | 2020-08-28 | 雷勃电气(常州)有限公司 | Method for detecting state of motor before operation |
| US20200382035A1 (en) * | 2019-05-31 | 2020-12-03 | Nxp Usa, Inc. | Technique for On-The-Fly Start-Up of a Permanent Magnet AC Motor Without a Speed or Position Sensor |
| CN112187128A (en) * | 2020-10-09 | 2021-01-05 | 江苏云意电气股份有限公司 | Automobile fan control method based on brushless direct current motor of Hall position sensor |
-
2021
- 2021-07-05 CN CN202110756751.6A patent/CN113572405A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977012A (en) * | 2010-11-09 | 2011-02-16 | 上海川邻精密配件有限公司 | Method and device for directionally controlling wheels in sensorless magnetic field |
| JP2012130100A (en) * | 2010-12-13 | 2012-07-05 | Samsung Yokohama Research Institute Co Ltd | Motor controller and motor control method |
| CN106685301A (en) * | 2017-01-05 | 2017-05-17 | 江苏中科君芯科技有限公司 | BLDCM control system and method based on improved sliding mode observer |
| US20200382035A1 (en) * | 2019-05-31 | 2020-12-03 | Nxp Usa, Inc. | Technique for On-The-Fly Start-Up of a Permanent Magnet AC Motor Without a Speed or Position Sensor |
| CN110752801A (en) * | 2019-10-18 | 2020-02-04 | 峰岹科技（深圳）有限公司 | Grass trimmer control method and device and grass trimmer |
| CN111600517A (en) * | 2020-06-12 | 2020-08-28 | 雷勃电气(常州)有限公司 | Method for detecting state of motor before operation |
| CN112187128A (en) * | 2020-10-09 | 2021-01-05 | 江苏云意电气股份有限公司 | Automobile fan control method based on brushless direct current motor of Hall position sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105915135B (en) | Motor control method based on dead beat optimization with double vector model predictions | |
| US8525466B2 (en) | Inverter device and control method thereof | |
| CN109802617B (en) | Control method, device and system of driving motor | |
| CN115118191A (en) | Motor drive control method, system and device and readable storage medium | |
| CN113691182B (en) | Resistance identification method, system, medium and terminal of permanent magnet synchronous motor | |
| CN107248831B (en) | Permanent-magnetic synchronous motor stator Flux Observation Method, flux observer and storage medium | |
| CN105024604A (en) | Field weakening control method and device of permanent magnet synchronous motor | |
| CN113572405A (en) | Sensorless space vector control method and system for low-voltage ceiling fan and electronic equipment | |
| CN113726248A (en) | Current compensation method and device, motor controller and storage medium | |
| CN114487813A (en) | Motor zero position detection method and device, motor controller and storage medium | |
| CN113872486A (en) | Three-phase current reconstruction method, device, equipment and storage medium | |
| CN114337431B (en) | Permanent magnet synchronous motor flux linkage identification method, system, medium and terminal | |
| JP4987032B2 (en) | Rotor angle estimation device | |
| CN114337433B (en) | Permanent magnet synchronous motor flux linkage identification method, system, medium and terminal | |
| CN110966729A (en) | Compressor wiring reverse connection identification method and device, compressor and air conditioner | |
| US11398785B2 (en) | Position detection and monitoring | |
| CN113904607B (en) | Predictive current control method for permanent magnet synchronous motor and related equipment | |
| CN111969923B (en) | Method and device for determining rotating speed of motor and electronic equipment | |
| CN116455288B (en) | No-parameter prediction control method, device, equipment and medium for electric locomotive | |
| CN113037165B (en) | Method and device for correcting flux linkage coefficient of permanent magnet synchronous motor | |
| CN109088571B (en) | Current sampling ripple compensation method and system, motor control device and storage medium | |
| CN107332489B (en) | Permanent magnet synchronous motor stator flux linkage observation method, flux linkage observer and storage medium | |
| CN107294456A (en) | Permanent-magnetic synchronous motor stator Flux Observation Method, flux observer and storage medium | |
| CN107294458B (en) | Permanent magnet synchronous motor stator flux linkage observation method, flux linkage observer and storage medium | |
| JP6805675B2 (en) | Power 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211029 |
|
| RJ01 | Rejection of invention patent application after publication |