CN110336509A - One kind is based on SVPWM control stator winding heating means and device - Google Patents
One kind is based on SVPWM control stator winding heating means and device Download PDFInfo
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- CN110336509A CN110336509A CN201910609303.6A CN201910609303A CN110336509A CN 110336509 A CN110336509 A CN 110336509A CN 201910609303 A CN201910609303 A CN 201910609303A CN 110336509 A CN110336509 A CN 110336509A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/12—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation pulsing by guiding the flux vector, current vector or voltage vector on a circle or a closed curve, e.g. for direct torque control
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/64—Controlling or determining the temperature of the winding
Abstract
The present invention provides a kind of stator winding heating means and device based on SVPWM control, belong to field of motor manufacturing.This method includes the motor speed for becoming zero-bit angle and setting according to initial rotation, or becomes the electric frequency of vector synthesized by the three-phase current vector of zero-bit angle and setting according to initial rotation, obtains the phase angle of resultant vector；According to the difference between phase angle and the target temperature and real-time temperature of stator winding, the three-phase current for heating to stator winding is obtained.The present invention can reduce heating cost while guaranteeing stator winding heating effect.
Description
Technical field
The present embodiments relate to field of motor manufacturing more particularly to a kind of stator winding heating based on SVPWM control
Method and apparatus.
Background technique
For improve motor insulation performance and enhance motor heat-sinking capability, the production process of motor stator winding need through
Technique for painting is crossed, which requires stator winding being heated to certain temperature, in order to which stator winding is heated to assigned temperature, leads to
Frequently with the mode for leading to direct current or alternating current to stator winding.At present in prior art, Electric heating is wherein main
One kind, for using which, stator winding is carried out in a manner of electrically heated by dedicated electric heating equipment.
But in prior art, the Special electrical heating equipment price used when heating stator winding is fairly expensive, leads to electricity
Machine cost of manufacture is very high.
Summary of the invention
In view of this, one of the technical issues of embodiment of the present invention is solved be to provide it is a kind of based on SVPWM control
Stator winding heating means and device reduce heating cost while realization ensure that stator winding heating effect.
In a first aspect, the embodiment of the invention provides a kind of stator winding heating means based on SVPWM control, this method
Include:
Become the motor speed at zero-bit angle and setting according to initial rotation, or becomes the three-phase at zero-bit angle and setting according to initial rotation
The electric frequency of vector synthesized by current phasor obtains the phase angle of the resultant vector；
According to the difference between the phase angle and the target temperature and real-time temperature of the stator winding, used
In the three-phase current heated to the stator winding.
Optionally, described according to the phase angle and the stator in the embodiment of the present invention based on first aspect
Difference between the target temperature and real-time temperature of winding, obtain for the stator winding heat three-phase current the step of
Include:
According to the difference between the target temperature and real-time temperature of the stator winding, the d under dq rotating coordinate system is obtained
Shaft voltage instructs ud q shaft voltage to instruct uq；
According to the phase angle, the d shaft voltage instruction ud and the q shaft voltage instruct uq, obtain static two phase coordinates
α shaft voltage U under systemαWith β shaft voltage Uβ；
According to the α shaft voltage UαWith the β shaft voltage Uβ, obtain the three-phase current for heating to the stator winding
PWM_A, PWM_B and PWM_C.
Optionally, described according to the phase angle, the d shaft voltage in the embodiment of the present invention based on first aspect
It instructs ud and the q shaft voltage to instruct uq, obtains the α shaft voltage U under static two phase coordinate systemsαWith β shaft voltage UβFormula are as follows:
Uα=ud*cosθ-uq*sinθ
Uβ=ud*sinθ+uq*cosθ
Wherein, θ is the phase angle of the resultant vector.
Optionally, in the embodiment of the present invention based on first aspect, become the motor at zero-bit angle and setting according to initial rotation
Revolving speed obtains the formula at the phase angle of the resultant vector are as follows:
θ=θ0*p+∑2π*n*p*ΔT/60
Wherein: θ0For initially revolve become zero-bit angle, n be setting motor speed, unit be rev/min, p for motor magnetic pole
Logarithm, Δ T are to calculate frequency.
Optionally, in the embodiment of the present invention based on first aspect, become the three-phase at zero-bit angle and setting according to initial rotation
The electric frequency of vector synthesized by current phasor obtains the calculation formula at the phase angle of the resultant vector are as follows:
θ=θ0+∑2π*f*ΔT
Wherein: θ0Become zero-bit angle initially to revolve, f is the frequency of vector synthesized by the three-phase current vector of setting, and Δ T is meter
Calculate frequency.
Second aspect, the embodiment of the invention also provides a kind of stator winding heating devices based on SVPWM control, including
Phase Corner Block List Representation and three-phase current module, in which:
Phase Corner Block List Representation is connected with the three-phase current module, and the motor for becoming zero-bit angle and setting according to initial rotation turns
Speed, or the electric frequency of the vector according to synthesized by the three-phase current vector of initial rotation change zero-bit angle and setting, obtain the synthesis
The phase angle of vector；
Three-phase current module is connected with the phase Corner Block List Representation, for according to receiving from the phase Corner Block List Representation
Difference between phase angle and the target temperature and real-time temperature of the stator winding, obtains for the stator winding
The three-phase current of heating.
Optionally, in the embodiment of the present invention based on second aspect, three-phase current module includes PI control module, Park
Inverse transform module and SVPWM control module, in which:
The PI control module is connected with the Park inverse transform module, for the target temperature according to the stator winding
Difference between real-time temperature obtains the d shaft voltage instruction ud q shaft voltage instruction uq under dq rotating coordinate system, and will
Obtained ud or uq is sent to the Park inverse transform module；
The Park inverse transform module is connected with the PI control module, for receiving according to from the PI control module
D shaft voltage instruction ud and the q shaft voltage instruct uq, and from the phase angle that the phase Corner Block List Representation receives, obtain
α shaft voltage U under static two phase coordinate systemsαWith β shaft voltage Uβ；
The SVPWM control module is connected with the Park inverse transform module and the stator winding, for according to institute
State α shaft voltage UαWith the β shaft voltage Uβ, Xiang Suoshu stator winding exports three-phase current PWM_A for heating, PWM_B and
PWM_C。
Optionally, in the embodiment of the present invention based on second aspect, Park inverse transform module is controlled according to from the PI
The d shaft voltage instruction ud and the q shaft voltage that module receives instruct uq, and received from the phase Corner Block List Representation
Phase angle obtains the α shaft voltage U under static two phase coordinate systemsαWith β shaft voltage UβFormula are as follows:
Uα=ud*cosθ-uq*sinθ
Uβ=ud*sinθ+uq*cosθ
Wherein, θ is the phase angle of the resultant vector.
Optionally, in the embodiment of the present invention based on second aspect, the phase Corner Block List Representation becomes zero-bit according to initial rotation
The motor speed at angle and setting obtains the calculation formula at the phase angle of the resultant vector are as follows:
θ=θ0*p+∑2π*n*p*ΔT/60
Wherein: θ0For initially revolve become zero-bit angle, n be setting motor speed, unit be rev/min, p for motor magnetic pole
Logarithm, Δ T are to calculate frequency.
Optionally, in the embodiment of the present invention based on second aspect, the phase Corner Block List Representation becomes zero-bit according to initial rotation
The electric frequency of vector synthesized by the three-phase current vector of angle and setting, obtains the calculation formula at the phase angle of the resultant vector
Are as follows:
θ=θ0+∑2π*f*ΔT
Wherein: θ0Become zero-bit angle initially to revolve, f is the electric frequency of vector synthesized by the three-phase current vector of setting, and Δ T is
Calculate frequency.
By above technical scheme as it can be seen that the embodiment of the present invention becomes zero-bit angle by setting motor speed and initial rotation, calculate
The electric frequency of vector synthesized by these three current phasors of three-phase current out, to obtain the phase of vector synthesized by three-phase current
Angle, or the electric frequency of the vector according to synthesized by the three-phase current vector of setting, obtain the phase of vector synthesized by three-phase current
Parallactic angle is finally obtained then in conjunction with the difference between the target temperature and real-time temperature of stator winding for adding to stator winding
The three-phase current of heat.It follows that the stator winding heating device provided in an embodiment of the present invention based on SVPWM control, it can
By the electric frequency of vector synthesized by setting motor speed or the three-phase current vector by setting, export electric machine controller
Three-phase current, with for giving stator winding heating, compared to dedicated stator winding heating equipment, guarantee quickly by stator around
While group is heated to target temperature, the heating cost of stator winding is greatly reduced.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in inventive embodiments can also obtain according to these attached drawings for those of ordinary skill in the art
Obtain other attached drawings.
Fig. 1 is a kind of flow diagram of the stator winding heating means based on SVPWM control in the embodiment of the present invention；
Fig. 2 is a kind of space vector of voltage figure in the embodiment of the present invention；
Fig. 3 is a kind of functional module signal of the stator winding heating device based on SVPWM control in the embodiment of the present invention
Figure.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in the embodiment of the present invention, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
Applying example only is a part of the embodiment of the embodiment of the present invention, instead of all the embodiments.Based on the implementation in the embodiment of the present invention
The range of protection of the embodiment of the present invention all should belong in example, those of ordinary skill in the art's every other embodiment obtained.
Referring to Fig. 1, the embodiment of the invention provides a kind of stator winding heating means based on SVPWM control, including
Step S101~S102, specifically:
S101: become the motor speed at zero-bit angle and setting according to initial rotation, or zero-bit angle and setting are become according to initial rotation
Three-phase current vector synthesized by vector electric frequency, obtain the phase angle of resultant vector；
S102: according to the difference between phase angle and the target temperature and real-time temperature of stator winding, obtain for
The three-phase current of stator winding heating.
The electricity frequency that the present invention passes through setting motor speed, or current phasor synthesized by setting each vector of three-phase current
Rate becomes zero-bit angle in conjunction with the initial rotation of motor, so that it may obtain the phase angle of resultant vector, and then can be according to obtained conjunction
At the phase angle of vector, the target temperature and real-time temperature of stator winding obtain the three-phase current for heating to stator winding.
After obtaining the phase angle of resultant vector, can according to the target temperature of obtained phase angle and stator winding and immediately
Temperature obtains the three-phase current for heating to stator winding in several ways.Three-phase current is input in stator winding, is used
In stator winding is heated to target temperature, to can smoothly enter into technique for painting, and then enhance the heat-sinking capability and raising of motor
The insulation performance of motor.
In one exemplary embodiment, the motor speed for becoming zero-bit angle and setting according to initial rotation, obtains resultant vector
The formula at phase angle are as follows:
θ=θ0*p+∑2π*n*p*ΔT/60
Wherein: θ0For initially revolve become zero-bit angle, n be setting motor speed, unit be rev/min, p for motor magnetic pole
Logarithm, Δ T are to calculate frequency.
The phase angle of resultant vector can be the angle relative to the α axis under static two phase coordinate systems.It assumes that rotor
It is rotated with the revolving speed of setting, calculates frequency, number of magnetic pole pairs and initial rotation in conjunction with known signal and become zero-bit angle, obtained conjunction
At the phase angle of vector.It should be noted that initial rotation, which becomes zero-bit angle, freely to be set, computer heating control effect is not influenced.
In a further exemplary embodiment, vector synthesized by the three-phase current vector of zero-bit angle and setting is become according to initial rotation
Electric frequency, obtain the calculation formula at the phase angle of resultant vector are as follows:
θ=θ0+∑2π*f*ΔT
Wherein: θ0For the electric phase angle of initial three-phase current resultant vector, f is the electricity of the three-phase current resultant vector of setting
Frequency, Δ T are to calculate frequency.
In this embodiment, due to setting the frequency of resultant vector, phase can be calculated according to 2 π * f* Δ T of ∑
The variable quantity of parallactic angle becomes zero-bit angle in conjunction with initial rotation, obtains the phase angle of resultant vector.
In one exemplary embodiment, according between phase angle and the target temperature and real-time temperature of stator winding
Difference, the step of obtaining the three-phase current for heating to stator winding include:
According to the difference between the target temperature and real-time temperature of stator winding, the d axis electricity under dq rotating coordinate system is obtained
Pressure instruction ud q shaft voltage instructs uq；
According to phase angle, d shaft voltage instructs ud and q shaft voltage to instruct uq, obtains the α shaft voltage under static two phase coordinate systems
UαWith β shaft voltage Uβ；
According to α shaft voltage UαWith β shaft voltage Uβ, obtain three-phase current PWM_A, PWM_B for being heated to stator winding and
PWM_C。
It should be noted that being adjusted by the PI in prior art, so that it may according to the target temperature of stator winding and i.e.
Difference between Shi Wendu obtains the d shaft voltage instruction ud q shaft voltage instruction uq under dq rotating coordinate system；Pass through Park
Inverse transformation can instruct ud and q shaft voltage to instruct uq, obtain α shaft voltage U according to d shaft voltageαWith β shaft voltage Uβ.To according to α
Shaft voltage UαWith β shaft voltage Uβ, obtain PWM_A, PWM_B and PWM_C.
In one exemplary embodiment, according to phase angle, d shaft voltage instructs ud and q shaft voltage to instruct uq, obtained static state
α shaft voltage U under two phase coordinate systemsαWith β shaft voltage UβFormula are as follows:
Uα=ud*cosθ-uq*sinθ
Uβ=ud*sinθ+uq*cosθ
Wherein, θ is the phase angle of resultant vector.
By UαAnd UβAs the input of SVPWM control module, available PWM_A, PWM_B and PWM_C, for stator
Winding heating.
It should be noted that ud and uq one of them assignment 0, in addition one is passed over by PI output parameter, can be incited somebody to action
Ud is assigned a value of 0, uq can also be assigned a value of 0.
The implementation of SVPWM algorithm mainly include the sector of reference voltage vector (being indicated with Uout) judge, each fan
The calculating of non-zero vector and zero vector action time and the determination of each sector vectors switching point in area, finally using certain frequency
The triangle carrier signal of rate is compared with each sector vectors switching point, so as to pwm pulse needed for generating converter
Signal.
Sector where first determining whether reference voltage vector Uout, according to space vector of voltage figure by static α β coordinate system space
It is divided into six sectors, as shown in Fig. 2, using UαAnd UβIndicate reference voltage vector UoutComponent on α, β axis defines Uref1、
Uref2And Uref3Three variables enable:
Re-define 3 variables As, B, C, by analysis it follows that
If Uref1> 0, then A=1, otherwise A=0；
If Uref2> 0, then B=1, otherwise B=0；
If Uref3> 0, then C=1, otherwise C=0.
N=4C+2B+A is enabled, then the relationship of available N and sector, as shown in the table:
| N | 3 | 1 | 5 | 4 | 6 | 2 |
| Sector | I | II | III | IV | V | VI |
According to above-mentioned space vector of voltage figure it follows that
By calculating, above formula is variable are as follows:
Similarly, it can be deduced that the action time of each vector in other sectors.It enables
Available each sector T0(T7)、T4And T6It is the time of effect, as shown in the table:
If T4+T6>Ts, then need to carry out ovennodulation processing, enable
Definition
Then three-phase current switch time switching point Tcm1、Tcm2And Tcm3It is as shown in the table with the relationship of each sector:
| N | 1 | 2 | 3 | 4 | 5 | 6 |
| Tcm1 | Tb | Ta | Ta | Tc | Tc | Tb |
| Tcm2 | Ta | Tc | Tb | Tb | Ta | Tc |
| Tcm3 | Tc | Tb | Tc | Ta | Tb | Ta |
The duty ratio of PWM_A, PWM_B and PWM_C are respectively according to Tcm1、Tcm2And Tcm3It determines, specific formula is as follows:
Wherein Ts is the modulation period of PWM_A/PWM_B/PWM_C.
Based on same inventive concept, as shown in figure 3, the embodiment of the invention also provides a kind of based on SVPWM control
Stator winding heating device 300, including phase Corner Block List Representation 301, three-phase current module 302, in which:
Phase Corner Block List Representation 301 and three-phase current module 302 connect, for becoming the motor at zero-bit angle and setting according to initial rotation
Revolving speed, or the electric frequency of the vector according to synthesized by the three-phase current vector of initial rotation change zero-bit angle and setting, obtain synthesis arrow
The phase angle of amount；
Three-phase current module 302 and phase Corner Block List Representation 301 connect, for according to the phase received from phase Corner Block List Representation 301
Difference between parallactic angle and the target temperature and real-time temperature of stator winding, obtains the three-phase for heating to stator winding
Electric current.
In one exemplary embodiment, three-phase current module 302 include PI control module, Park inverse transform module and
SVPWM control module, in which:
PI control module is connected with Park inverse transform module, for according to the target temperature and real-time temperature of stator winding it
Between difference, obtain d shaft voltage instruction ud under dq rotating coordinate system perhaps q shaft voltage instruction uq and by obtained ud or
Uq is sent to Park inverse transform module；
Park inverse transform module is connected with PI control module, for being referred to according to the d shaft voltage received from PI control module
It enables ud and q shaft voltage instruct uq, and from the phase angle that phase Corner Block List Representation receives, obtains the α axis under static two phase coordinate systems
Voltage UαWith β shaft voltage Uβ；
SVPWM control module is connected with Park inverse transform module and stator winding, for according to α shaft voltage UαWith β axis
Voltage Uβ, three-phase current PWM_A, PWM_B and PWM_C for heating are exported to stator winding.
In one exemplary embodiment, Park inverse transform module is instructed according to the d shaft voltage received from PI control module
Ud and q shaft voltage instructs uq, and from the phase angle that phase Corner Block List Representation receives, and obtains the α axis electricity under static two phase coordinate systems
Press UαWith β shaft voltage UβFormula are as follows:
Uα=ud*cosθ-uq*sinθ
Uβ=ud*sinθ+uq*cosθ
Wherein, θ is the phase angle of resultant vector.
Park inverse transform module has 3 input parameters, is respectively as follows: phase angle, voltage instruction ud and voltage instruction uq.It needs
Illustrate, ud and uq one of them assignment 0, in addition one is passed over by PI output parameter.
In one exemplary embodiment, phase Corner Block List Representation becomes the motor speed at zero-bit angle and setting according to initial rotation, obtains
The calculation formula at the phase angle of resultant vector are as follows:
θ=θ0*p+∑2π*n*p*ΔT/60
Wherein: θ0For initially revolve become zero-bit angle, n be setting motor speed, unit be rev/min, p for motor magnetic pole
Logarithm, Δ T are to calculate frequency.
In one exemplary embodiment, phase Corner Block List Representation becomes the three-phase current vector institute at zero-bit angle and setting according to initial rotation
The electric frequency of resultant vector obtains the calculation formula at the phase angle of resultant vector are as follows:
θ=θ0+∑2π*f*ΔT
Wherein: θ0Become zero-bit angle initially to revolve, f is the electric frequency of vector synthesized by the three-phase current vector of setting, and Δ T is
Calculate frequency.
Phase Corner Block List Representation 301 and three-phase current module 302 in above-described embodiment are used to execute to be determined based on SVPWM control
The method and step of sub- winding heating.
In practical applications, the target temperature of stator winding can send temperature control to electric machine controller from host computer and refer to
It when enabling, is carried in temperature control instruction, after electric machine controller receives the temperature control instruction of host computer transmission, to temperature control
System instruction is parsed, to obtain the target temperature of stator winding.
The real-time temperature of stator winding can be obtained by temperature sensor measurement, and temperature sensor can be contact
, it is also possible to contactless, due to the high resolution of non-contact temperature sensor, and it is rapid to measure temperature change
Object temperature, it is therefore, preferably instant with contactless temperature sensor measurement stator winding in the embodiment of the present invention
Temperature.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load, reference can be made to the related descriptions of other embodiments.
Those of ordinary skill in the art may be aware that function described in conjunction with the examples disclosed in the embodiments of the present disclosure
Can module and method and step, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions
It is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Professional technique
Personnel can specifically realize described function to each using distinct methods, but this realization is it is not considered that super
The scope of the present invention out.
In embodiment provided by the present invention, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of above-mentioned module or unit,
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be with
In conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit or
Communication connection can be electrical property, mechanical or other forms.
Above-mentioned unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
If above-mentioned integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the present invention realizes above-described embodiment side
All or part of the process in method can also instruct relevant hardware to complete, above-mentioned computer by computer program
Program can be stored in a computer readable storage medium, and the computer program is when being executed by processor, it can be achieved that above-mentioned each
The step of a embodiment of the method.Wherein, above-mentioned computer program includes computer program code, and above-mentioned computer program code can
Think source code form, object identification code form, executable file or certain intermediate forms etc..Above-mentioned computer readable storage medium
It may include: any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic that can carry above-mentioned computer program code
Dish, CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that above-mentioned
It is appropriate that the content that computer readable storage medium includes can be carried out according to the requirement made laws in jurisdiction with patent practice
Increase and decrease, such as do not include electric carrier wave according to legislation and patent practice, computer readable storage medium in certain jurisdictions
Signal and telecommunication signal.
Above-described embodiment is merely illustrative of the technical solution of the present invention, rather than its limitations.Although the present invention has been described
The preferred embodiment of embodiment, but one of ordinary skilled in the art once knows basic creative concept, then it can be to this
A little embodiments make other change and modification.So the following claims are intended to be interpreted as including preferred embodiment and falls
Enter all change and modification of range of embodiment of the invention.Obviously, those skilled in the art can to the embodiment of the present invention into
Spirit and scope of the various modification and variations of row without departing from the embodiment of the present invention.If in this way, these of the embodiment of the present invention
Modifications and variations belong within the scope of claim of the embodiment of the present invention and its equivalent technologies, then the embodiment of the present invention is also intended to
It includes these modifications and variations.
Claims (10)
1. a kind of stator winding heating means based on SVPWM control characterized by comprising
Become the motor speed at zero-bit angle and setting according to initial rotation, or becomes the three-phase current at zero-bit angle and setting according to initial rotation
The electric frequency of vector synthesized by vector obtains the phase angle of the resultant vector；
According to the difference between the phase angle and the target temperature and real-time temperature of the stator winding, obtain for
The three-phase current of the stator winding heating.
2. the stator winding heating means according to claim 1 based on SVPWM control, which is characterized in that the basis
Difference between the phase angle and the target temperature and real-time temperature of the stator winding, obtains for the stator
The three-phase current of winding heating, comprising:
According to the difference between the target temperature and real-time temperature of the stator winding, the d axis electricity under dq rotating coordinate system is obtained
Pressure instruction ud q shaft voltage instructs uq；
According to the phase angle, the d shaft voltage instruction ud and the q shaft voltage instruct uq, obtain under static two phase coordinate systems
α shaft voltage UαWith β shaft voltage Uβ；
According to the α shaft voltage UαWith the β shaft voltage Uβ, obtain the three-phase current PWM_ for heating to the stator winding
A, PWM_B and PWM_C.
3. the stator winding heating means according to claim 2 based on SVPWM control, which is characterized in that the basis
The phase angle, the d shaft voltage instruction ud and the q shaft voltage instruct uq, obtain the α shaft voltage under static two phase coordinate systems
UαWith β shaft voltage UβFormula are as follows:
Uα=ud*cosθ-uq*sinθ
Uβ=ud*sinθ+uq*cosθ
Wherein, θ is the phase angle of the resultant vector.
4. the stator winding heating means according to claim 1 based on SVPWM control, which is characterized in that according to initial
Rotation becomes the motor speed at zero-bit angle and setting, obtains the formula at the phase angle of the resultant vector are as follows:
θ=θ0*p+∑2π*n*p*ΔT/60
Wherein: θ0For initially revolve become zero-bit angle, n be setting motor speed, unit be rev/min, p for motor number of magnetic pole pairs,
Δ T is to calculate frequency.
5. the stator winding heating means according to claim 1 based on SVPWM control, which is characterized in that according to initial
Rotation becomes the electric frequency of vector synthesized by the three-phase current vector of zero-bit angle and setting, obtains the meter at the phase angle of the resultant vector
Calculate formula are as follows:
θ=θ0+∑2π*f*ΔT
Wherein: θ0Become zero-bit angle initially to revolve, f is the frequency of vector synthesized by the three-phase current vector of setting, and Δ T is to calculate frequency
Rate.
6. a kind of stator winding heating device based on SVPWM control, which is characterized in that including phase Corner Block List Representation and three-phase current
Module, in which:
Phase Corner Block List Representation is connected with the three-phase current module, for becoming the motor speed at zero-bit angle and setting according to initial rotation,
Or become the electric frequency of vector synthesized by the three-phase current vector of zero-bit angle and setting according to initial rotation, obtain the resultant vector
Phase angle；
Three-phase current module is connected with the phase Corner Block List Representation, for according to the phase received from the phase Corner Block List Representation
Difference between angle and the target temperature and real-time temperature of the stator winding is obtained for heating to the stator winding
Three-phase current.
7. a kind of stator winding heating device based on SVPWM control according to claim 6, which is characterized in that three-phase
Current module includes PI control module, Park inverse transform module and SVPWM control module, in which:
The PI control module is connected with the Park inverse transform module, for according to the target temperature of the stator winding and i.e.
Difference between Shi Wendu obtains the d shaft voltage instruction ud q shaft voltage instruction uq under dq rotating coordinate system, and will obtain
Ud or uq be sent to the Park inverse transform module；The Park inverse transform module is connected with the PI control module, is used
According to the d shaft voltage instruction ud and q shaft voltage instruction uq received from the PI control module, and from described
The phase angle that phase Corner Block List Representation receives obtains the α shaft voltage U under static two phase coordinate systemsαWith β shaft voltage Uβ；The SVPWM
Control module is connected with the Park inverse transform module and the stator winding, for according to the α shaft voltage UαWith the β
Shaft voltage Uβ, the output of Xiang Suoshu stator winding three-phase current PWM_A, PWM_B and PWM_C for heating.
8. it is according to claim 7 based on SVPWM control stator winding heating device, Park inverse transform module according to from
The d shaft voltage that the PI control module receives instruction ud and the q shaft voltage instruct uq, and from the phase angle mould
The phase angle that block receives obtains the α shaft voltage U under static two phase coordinate systemsαWith β shaft voltage UβFormula are as follows:
Uα=ud*cosθ-uq*sinθ
Uβ=ud*sinθ+uq*cosθ
Wherein, θ is the phase angle of the resultant vector.
9. the stator winding heating device according to claim 6 based on SVPWM control, which is characterized in that the phase
Corner Block List Representation becomes the motor speed at zero-bit angle and setting according to initial rotation, obtains the calculation formula at the phase angle of the resultant vector
Are as follows:
θ=θ0*p+∑2π*n*p*ΔT/60
Wherein: θ0For initially revolve become zero-bit angle, n be setting motor speed, unit be rev/min, p for motor number of magnetic pole pairs,
Δ T is to calculate frequency.
10. the stator winding heating device according to claim 6 based on SVPWM control, which is characterized in that the phase
Corner Block List Representation becomes the electric frequency of vector synthesized by the three-phase current vector of zero-bit angle and setting according to initial rotation, obtains the synthesis arrow
The calculation formula at the phase angle of amount are as follows:
θ=θ0+∑2π*f*ΔT
Wherein: θ0Become zero-bit angle initially to revolve, f is the electric frequency of vector synthesized by the three-phase current vector of setting, and Δ T is to calculate
Frequency.
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| CN111355409A (en) * | 2020-03-13 | 2020-06-30 | 南瑞集团有限公司 | Control method and system of permanent magnet synchronous motor and storage medium |
| CN112290845A (en) * | 2020-10-26 | 2021-01-29 | 中国第一汽车股份有限公司 | Motor control method and device, motor controller, motor system and storage medium |
| CN112751467A (en) * | 2020-12-29 | 2021-05-04 | 精进电动科技股份有限公司 | Self-heating method and water inlet maintenance method for driving motor |
| CN112994569A (en) * | 2021-02-05 | 2021-06-18 | 陕西科技大学 | Motor driving system and method based on digital and analog hybrid simulation |
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