CN109495027A - Permanent magnet synchronous motor magnetic pole position estimation method and system with LC filter - Google Patents
Permanent magnet synchronous motor magnetic pole position estimation method and system with LC filter Download PDFInfo
- Publication number
- CN109495027A CN109495027A CN201811626445.5A CN201811626445A CN109495027A CN 109495027 A CN109495027 A CN 109495027A CN 201811626445 A CN201811626445 A CN 201811626445A CN 109495027 A CN109495027 A CN 109495027A
- Authority
- CN
- China
- Prior art keywords
- motor
- filter
- phasor
- frequency converter
- angle
- 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.)
- Granted
Links
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
- 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
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, 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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of permanent magnet synchronous motor magnetic pole position estimation method of band LC filter and systems, comprising: obtains the output parameter of frequency converter and the passive element parameter of LC filter；Motor output voltage U is obtained using the stable state phasor relation between frequency converter, LC filter and electric moter voltage/electric current according to the passive element parameter of the output parameter of frequency converter and LC filterm, motor export electric current ImAnd motor power factor angle θm；According toSeek motor output voltage phasorWith winding back emf EoAngle σ；According toSeek rotor magnetic polar angleIt can be seen that, the application is according to the output parameter of frequency converter and the passive element parameter of LC filter, utilize the stable state phasor relation between frequency converter, LC filter and electric moter voltage/electric current, the voltage, current amplitude and power-factor angle of motor side can be extrapolated, to seek rotor magnetic polar angle, to realize the estimation to permanent magnet synchronous motor stable state position of magnetic pole.
Description
Technical field
The present invention relates to motor drivens and frequency control field, more particularly to a kind of permanent magnet synchronous electric of band LC filter
Machine magnetic pole position estimation method and system.
Background technique
With the continuous improvement of material technology and manufacturing process, high speed/ultrahigh speed PMSM Drive System is answered
With more and more extensive.Currently, being proposed to the drive control of its drive system higher after the raising of permanent magnet synchronous motor speed
Requirement, wherein just include reduce drive system in frequency converter output signal contained by current harmonics.In the prior art, in order to
Current harmonics contained by the output signal of frequency converter is reduced, LC filter is added usually between frequency converter and motor.But LC
The mathematical model of filter can be coupled with the mathematical model of motor, so that the output loading model of frequency converter is more complicated,
So as to cause the permanent magnet synchronous motor magnetic pole position estimation method merely based on motor model, it is no longer desirable for this kind of system
System.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art needs to solve at present
The problem of.
Summary of the invention
The object of the present invention is to provide a kind of permanent magnet synchronous motor magnetic pole position estimation method of band LC filter and system,
Realize the estimation to permanent magnet synchronous motor stable state position of magnetic pole.
In order to solve the above technical problems, the present invention provides a kind of permanent magnet synchronous motor position of magnetic poles of band LC filter to estimate
Meter method, comprising:
Obtain the output parameter of frequency converter and the passive element parameter of LC filter；
According to the passive element parameter of the output parameter of the frequency converter and the LC filter, using the frequency converter,
Stable state phasor relation between the LC filter and electric moter voltage/electric current obtains motor output voltage Um, motor export electric current
ImAnd motor power factor angle θm；
According toSeek motor output voltage phasorAnd motor
Back-emf EoAngle σ；Wherein, XqFor motor quadrature axis induction reactance, RsFor motor stator resistance；
According toSeek rotor magnetic polar angleWherein, θuFor the motor output voltage phasorWith the angle of motor A axis.
Preferably, the process of the passive element parameter of the output parameter for obtaining frequency converter and LC filter, comprising:
Obtain frequency converter output voltage UO, output current of frequency converter IOAnd transducer power factor angle θo, and obtain LC filtering
The inductance parameters L and capacitance parameter C of device；
And according to the passive element parameter of the output parameter of the frequency converter and the LC filter, the frequency conversion is utilized
Stable state phasor relation between device, the LC filter and electric moter voltage/electric current, obtains motor output voltage UmProcess, packet
It includes:
According toSeek the pressure drop U of inductance in the LC filterL；Wherein,For output current of frequency converter
Phasor,For the pressure drop phasor of the inductance；
According toβ=90 °+θoSeek motor output voltage Um；Wherein, β is
The pressure drop phasor of the inductanceWith frequency converter output voltage phasorAngle.
Preferably, according to the passive element parameter of the output parameter of the frequency converter and the LC filter, using described
Stable state phasor relation between frequency converter, the LC filter and electric moter voltage/electric current show that motor exports electric current ImMistake
Journey, comprising:
According toSeek the electric current I of capacitor in the LC filterC；Wherein,For the capacitor
Electric current phasor；
According toSeek the frequency converter output voltage phasorWith the motor output voltage
PhasorAngle δ；
According toSeek motor output electric current Im；Wherein,
For the output current of frequency converter phasorWith the electric current phasor of the capacitorAngle.
Preferably, according to the passive element parameter of the output parameter of the frequency converter and the LC filter, using described
Stable state phasor relation between frequency converter, the LC filter and electric moter voltage/electric current, obtains motor power factor angle θmMistake
Journey, comprising:
According toSeek motor output electric current phasorWith the electric current phasor of the capacitor's
Angle α；
According to θm=90 ° of-α seek motor power factor angle θm。
In order to solve the above technical problems, the present invention also provides a kind of permanent magnet synchronous motor position of magnetic poles of band LC filter
Estimating system, comprising:
Parameter acquisition module, for obtaining the output parameter of frequency converter and the passive element parameter of LC filter；
Motor calculates module, for being joined according to the output parameter of the frequency converter and the passive element of the LC filter
Number show that motor exports using the stable state phasor relation between the frequency converter, the LC filter and electric moter voltage/electric current
Voltage Um, motor export electric current ImAnd motor power factor angle θm；
Angle seeks module, is used for basisSeek motor output
Voltage phasorWith winding back emf EoAngle σ；Wherein, XqFor motor quadrature axis induction reactance, RsFor motor stator resistance；
Magnetic pole determining module is used for basisSeek rotor magnetic polar angleWherein, θuFor motor
Output voltage phasorWith the angle of motor A axis.
Preferably, the parameter acquisition module is specifically used for obtaining frequency converter output voltage UO, output current of frequency converter IOAnd
Transducer power factor angle θo, and obtain the inductance parameters L and capacitance parameter C of LC filter；
And the motor calculates that module includes that voltage calculates that submodule, electric current calculate submodule and power-factor angle estimator
Module；Wherein, the voltage calculates that submodule includes:
Inductive drop seeks unit, is used for basisSeek the pressure drop U of inductance in the LC filterL；Its
In,For output current of frequency converter phasor,For the pressure drop phasor of the inductance；
Electric moter voltage seeks unit, is used for basisβ=90 °+θoSeek electricity
Machine output voltage Um；Wherein, β is the pressure drop phasor of the inductanceWith frequency converter output voltage phasorAngle.
Preferably, the electric current calculates that submodule includes:
Capacitance current seeks unit, is used for basisSeek the electric current of capacitor in the LC filter
IC；Wherein,For the electric current phasor of the capacitor；
Voltage angle seeks unit, is used for basisSeek the frequency converter output voltage phasorWith the motor output voltage phasorAngle δ；
Current of electric seeks unit, is used for basisIt seeks
Motor exports electric current Im；Wherein,For the output current of frequency converter phasorWith the electric current phasor of the capacitorAngle.
Preferably, the power-factor angle calculates that submodule includes:
Electric current angle seeks unit, is used for basisSeek motor output electric current phasorAnd institute
State the electric current phasor of capacitorAngle α；
Power-factor angle seeks unit, for according to θm=90 ° of-α seek motor power factor angle θm。
The present invention provides a kind of permanent magnet synchronous motor magnetic pole position estimation methods of band LC filter, comprising: obtains and becomes
The output parameter of frequency device and the passive element parameter of LC filter；According to the passive member of the output parameter of frequency converter and LC filter
Part parameter obtains motor output voltage using the stable state phasor relation between frequency converter, LC filter and electric moter voltage/electric current
Um, motor export electric current ImAnd motor power factor angle θm；According to
Seek motor output voltage phasorWith winding back emf EoAngle σ；According toSeek rotor magnetic
Polar angle degree
As it can be seen that the application utilizes frequency converter, LC according to the output parameter of frequency converter and the passive element parameter of LC filter
Stable state phasor relation between filter and electric moter voltage/electric current, can extrapolate the voltage, current amplitude and power of motor side because
Number angle, so that rotor magnetic polar angle is sought, to realize the estimation to permanent magnet synchronous motor stable state position of magnetic pole.
The present invention also provides a kind of permanent magnet synchronous motor position of magnetic pole estimating systems of band LC filter, with above-mentioned estimation
Method beneficial effect having the same.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of permanent magnet synchronous motor magnetic pole position estimation method of band LC filter provided in an embodiment of the present invention
Flow chart；
Fig. 2 is a kind of structural representation of the PMSM Drive System of band LC filter provided in an embodiment of the present invention
Figure；
Fig. 3 is a kind of stable state phasor diagram of permanent magnet synchronous motor provided in an embodiment of the present invention；
Fig. 4 is a kind of equivalent circuit of the PMSM Drive System of band LC filter provided in an embodiment of the present invention
Figure；
Fig. 5 is a kind of frequency converter, LC filter and electric moter voltage/electric current stable state phasor provided in an embodiment of the present invention
Figure；
Fig. 6 is a kind of permanent magnet synchronous motor position of magnetic pole estimating system of band LC filter provided in an embodiment of the present invention
Structural schematic diagram.
Specific embodiment
Core of the invention is to provide the permanent magnet synchronous motor magnetic pole position estimation method and system of a kind of band LC filter,
Realize the estimation to permanent magnet synchronous motor stable state position of magnetic pole.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is please referred to, Fig. 1 is a kind of permanent magnet synchronous motor position of magnetic pole of band LC filter provided in an embodiment of the present invention
The flow chart of estimation method.
The permanent magnet synchronous motor magnetic pole position estimation method of band LC filter includes:
Step S1: the output parameter of frequency converter and the passive element parameter of LC filter are obtained.
Step S2: it according to the passive element parameter of the output parameter of frequency converter and LC filter, is filtered using frequency converter, LC
Stable state phasor relation between device and electric moter voltage/electric current obtains motor output voltage Um, motor export electric current ImAnd motor function
Rate factor angle θm。
Step S3: according toSeek motor output voltage phasorWith winding back emf EoAngle σ.
Wherein, XqFor motor quadrature axis induction reactance, RsFor motor stator resistance.
Step S4: according toSeek rotor magnetic polar angle
Wherein, θuFor motor output voltage phasorWith the angle of motor A axis.
Specifically, principle is carried out to the estimation method of step S1~step S4 permanent magnet synchronous motor position of magnetic pole proposed
Illustrate:
Referring to figure 2., Fig. 2 is a kind of PMSM Drive System of band LC filter provided in an embodiment of the present invention
Structural schematic diagram.In Fig. 2, AC power frequency input power is converted specific frequency amplitude and specific by frequency converter (AC-DC-AC)
AC power source.Since frequency converter is using PWM (Pulse Width Modulation, pulse width modulation) modulation strategy, so
Contain more harmonic components in the output signal of frequency converter.These harmonic components will increase the loss of motor, lead to that the motor feels hot
Seriously.To reduce harmonic components contained in the output signal of frequency converter, usually increase LC filter in the output end of frequency converter,
By adjusting the cutoff frequency of LC filter, the voltage and current harmonic wave of motor side can be made to meet the requirements.
Referring to figure 3., Fig. 3 is a kind of stable state phasor diagram of permanent magnet synchronous motor provided in an embodiment of the present invention.In Fig. 3,
EoFor winding back emf,Electric current phasor (I is exported for motormElectric current is exported for motor),For motor output voltage phasor (Um
For motor output voltage), RsFor motor stator resistance, XdFor motor d-axis induction reactance, XqFor motor quadrature axis induction reactance, θmFor motor function
Rate factor angle (motor output voltage phasorElectric current phasor is exported with motorAngle), ωeAngular frequency is rotated for synchronous motor
Rate (rad/s), θuFor motor output voltage phasorWith the angle of motor A axis, σ is between δ-γ coordinate system and d-q coordinate system
Angle (motor output voltage phasorWith winding back emf EoAngle),For permanent-magnetic synchronous motor rotor magnetic polar angle
(angle of the rotor magnetic pole d axis relative to motor A axis).
Under stable state, the transformation of electric current to δ-γ coordinate system under alpha-beta coordinate system is as follows:
The transformation of electric current to d-q coordinate system under δ-γ coordinate system is as follows:
From the stable state phasor diagram of Fig. 3 it is found that motor output voltage phasorWith winding back emf EoAngle are as follows:
Then, permanent-magnetic synchronous motor rotor magnetic polar angle is obtained:
Due to the angle theta of motor A axisuIt is known quantity, so to obtain permanent-magnetic synchronous motor rotor magnetic polar angleOnly
Demand takes motor output voltage phasorWith winding back emf EoAngle σ.By formula (1) it is found that seeking motor output
Voltage phasorWith winding back emf EoAngle σ, demand takes motor output voltage Um, motor export electric current ImAnd power of motor
Factor angle θm(motor quadrature axis induction reactance Xq, motor stator resistance RsIt is known quantity).
For seeking motor output voltage Um, motor export electric current ImAnd motor power factor angle θm, comprising: it obtains first
The output parameter of frequency converter and the passive element parameter of LC filter, then according to the output parameter of frequency converter and LC filter
Passive element parameter show that motor is defeated using the stable state phasor relation between frequency converter, LC filter and electric moter voltage/electric current
Voltage U outm, motor export electric current ImAnd motor power factor angle θm。
The present invention provides a kind of permanent magnet synchronous motor magnetic pole position estimation methods of band LC filter, comprising: obtains and becomes
The output parameter of frequency device and the passive element parameter of LC filter；According to the passive member of the output parameter of frequency converter and LC filter
Part parameter obtains motor output voltage using the stable state phasor relation between frequency converter, LC filter and electric moter voltage/electric current
Um, motor export electric current ImAnd motor power factor angle θm；According toIt asks
Take motor output voltage phasorWith winding back emf EoAngle σ；According toSeek rotor magnetic pole
Angle
As it can be seen that the application utilizes frequency converter, LC according to the output parameter of frequency converter and the passive element parameter of LC filter
Stable state phasor relation between filter and electric moter voltage/electric current, can extrapolate the voltage, current amplitude and power of motor side because
Number angle, so that rotor magnetic polar angle is sought, to realize the estimation to permanent magnet synchronous motor stable state position of magnetic pole.
On the basis of the above embodiments:
As a kind of optionally embodiment, the mistake of the output parameter of frequency converter and the passive element parameter of LC filter is obtained
Journey, comprising:
Obtain frequency converter output voltage UO, output current of frequency converter IOAnd transducer power factor angle θo, and obtain LC filtering
The inductance parameters L and capacitance parameter C of device；
And according to the passive element parameter of the output parameter of frequency converter and LC filter, using frequency converter, LC filter and
Stable state phasor relation between electric moter voltage/electric current obtains motor output voltage UmProcess, comprising:
According toSeek the pressure drop U of inductance in LC filterL；Wherein,For output current of frequency converter phase
Amount,For the pressure drop phasor of inductance；
According toβ=90 °+θoSeek motor output voltage Um；Wherein, β is
The pressure drop phasor of inductanceWith frequency converter output voltage phasorAngle.
Specifically, referring to figure 4., Fig. 4 is a kind of permanent magnet synchronous motor of band LC filter provided in an embodiment of the present invention
The equivalent circuit diagram of drive system.In Fig. 4,For frequency converter output voltage phasor (UOFor frequency converter output voltage),To become
Frequency device exports electric current phasor (IOFor output current of frequency converter),For the voltage phasor (U of inductance in LC filterLFor inductance electricity
It presses, perpendicular to output current of frequency converter I in phaseO),For the electric current phasor (I of capacitor in LC filtercFor capacitance current, phase
Perpendicular to motor output voltage U on positionm)。
Referring to figure 5., Fig. 5 is a kind of frequency converter, LC filter and electric moter voltage/electric current provided in an embodiment of the present invention
Stable state phasor diagram.In Fig. 5, γ is the electric current phasor of capacitorElectric current phasor is exported with motorAngle, β be inductance voltage
PhasorWith frequency converter output voltage phasorAngle, θoFor transducer power factor angle (frequency converter output voltage phasorWith output current of frequency converter phasorAngle), θmFor motor output voltage phasorElectric current phasor is exported with motor
Angle.Wherein, β=90 °+θo>=90 °, γ=90 °+θm>=90 °, α=180 °-γ=90 °-θm≤90°。
The pressure drop of inductance in LC filter:Wherein, L is the inductance parameters of LC filter.
In triangleIn, it is obtained according to the cosine law:
To sum up, motor output voltage U is sought according to formula (3) and formula (4)mProcess, comprising:
Obtain frequency converter output voltage UO, output current of frequency converter IOAnd transducer power factor angle θo, and obtain LC filtering
The inductance parameters L of device；
According to formula (3)Seek the pressure drop U of inductance in LC filterL；
According to formula (4)And β=90 °+θoSeek motor output voltage Um。
As a kind of optionally embodiment, according to the passive element parameter of the output parameter of frequency converter and LC filter, benefit
With the stable state phasor relation between frequency converter, LC filter and electric moter voltage/electric current, show that motor exports electric current ImProcess,
Include:
According toSeek the electric current I of capacitor in LC filterC；Wherein,For the electric current phasor of capacitor；
According toSeek frequency converter output voltage phasorWith motor output voltage phasor
Angle δ；
According toSeek motor output electric current Im；Wherein,
For output current of frequency converter phasorWith the electric current phasor of capacitorAngle.
Specifically, in LC filter capacitor electric current:Wherein, C is the electricity of LC filter
Hold parameter.
Frequency converter output voltage phasorWith motor output voltage phasorAngle:
Output current of frequency converter phasorWith the electric current phasor of capacitorAngle:
In triangleIn, it is obtained according to the cosine law:
To sum up, motor output electric current I is sought according to formula (5)-formula (8)mProcess, comprising:
Obtain the capacitance parameter C of LC filter；
According to formula (5)Seek the electric current I of capacitor in LC filterC；
According to formula (6)Seek frequency converter output voltage phasorWith motor output voltage
PhasorAngle δ；
According to formula (7)Seek output current of frequency converter phasorWith the electric current phasor of capacitorFolder
Angle
According to formula (8)Seek motor output electric current Im。
As a kind of optionally embodiment, according to the passive element parameter of the output parameter of frequency converter and LC filter, benefit
With the stable state phasor relation between frequency converter, LC filter and electric moter voltage/electric current, motor power factor angle θ is obtainedmMistake
Journey, comprising:
According toSeek motor output electric current phasorWith the electric current phasor of capacitorAngle
α；
According to θm=90 ° of-α seek motor power factor angle θm。
Specifically, motor exports electric current phasorWith the electric current phasor of capacitorAngle:
Motor power factor angle: θm=180 ° of -90 ° of-α=90 ° of-α (10).
To sum up, motor power factor angle θ is sought according to formula (9) and formula (10)mProcess, comprising:
According to formula (9)Seek motor output electric current phasorWith the electric current phasor of capacitor
Angle α；
According to formula (10) θm=90 ° of-α seek motor power factor angle θm。
Fig. 6 is please referred to, Fig. 6 is a kind of permanent magnet synchronous motor position of magnetic pole of band LC filter provided in an embodiment of the present invention
The structural schematic diagram of estimating system.
The permanent magnet synchronous motor position of magnetic pole estimating system of band LC filter includes:
Parameter acquisition module 1, for obtaining the output parameter of frequency converter and the passive element parameter of LC filter；
Motor calculates module 2, for utilizing change according to the output parameter of frequency converter and the passive element parameter of LC filter
Stable state phasor relation between frequency device, LC filter and electric moter voltage/electric current obtains motor output voltage Um, motor output electricity
Flow ImAnd motor power factor angle θm；
Angle seeks module 3, is used for basisIt is defeated to seek motor
Voltage phasor outWith winding back emf EoAngle σ；Wherein, XqFor motor quadrature axis induction reactance, RsFor motor stator resistance；
Magnetic pole determining module 4 is used for basisSeek rotor magnetic polar angleWherein, θuFor electricity
Machine output voltage phasorWith the angle of motor A axis.
As a kind of optionally embodiment, parameter acquisition module 1 is specifically used for obtaining frequency converter output voltage UO, frequency converter
Export electric current IOAnd transducer power factor angle θo, and obtain the inductance parameters L and capacitance parameter C of LC filter；
And motor calculates that module 2 includes that voltage calculates that submodule, electric current calculate that submodule and power-factor angle calculate submodule
Block；Wherein, voltage calculates that submodule includes:
Inductive drop seeks unit, is used for basisSeek the pressure drop U of inductance in LC filterL；Wherein,
For output current of frequency converter phasor,For the pressure drop phasor of inductance；
Electric moter voltage seeks unit, is used for basisβ=90 °+θoSeek electricity
Machine output voltage Um；Wherein, β is the pressure drop phasor of inductanceWith frequency converter output voltage phasorAngle.
As a kind of optionally embodiment, electric current calculates that submodule includes:
Capacitance current seeks unit, is used for basisSeek the electric current I of capacitor in LC filterC；Its
In,For the electric current phasor of capacitor；
Voltage angle seeks unit, is used for basisSeek frequency converter output voltage phasor
With motor output voltage phasorAngle δ；
Current of electric seeks unit, is used for basisSeek electricity
Machine exports electric current Im；Wherein,For output current of frequency converter phasorWith the electric current phasor of capacitorAngle.
As a kind of optionally embodiment, power-factor angle calculates that submodule includes:
Electric current angle seeks unit, is used for basisSeek motor output electric current phasorAnd electricity
The electric current phasor of appearanceAngle α；
Power-factor angle seeks unit, for according to θm=90 ° of-α seek motor power factor angle θm。
The introduction of estimating system provided by the present application please refers to the embodiment of above-mentioned estimation method, and the application is no longer superfluous herein
It states.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. a kind of permanent magnet synchronous motor magnetic pole position estimation method of band LC filter characterized by comprising
Obtain the output parameter of frequency converter and the passive element parameter of LC filter；
According to the passive element parameter of the output parameter of the frequency converter and the LC filter, the frequency converter, described is utilized
Stable state phasor relation between LC filter and electric moter voltage/electric current obtains motor output voltage Um, motor export electric current ImAnd
Motor power factor angle θm；
According toSeek motor output voltage phasorIt is anti-electric with motor
Gesture EoAngle σ；Wherein, XqFor motor quadrature axis induction reactance, RsFor motor stator resistance；
According toSeek rotor magnetic polar angleWherein, θuFor the motor output voltage phasorWith
The angle of motor A axis.
2. the permanent magnet synchronous motor magnetic pole position estimation method as described in claim 1 with LC filter, which is characterized in that institute
State the process of the passive element parameter of the output parameter and LC filter that obtain frequency converter, comprising:
Obtain frequency converter output voltage UO, output current of frequency converter IOAnd transducer power factor angle θo, and obtain LC filter
Inductance parameters L and capacitance parameter C；
And according to the passive element parameter of the output parameter of the frequency converter and the LC filter, the frequency converter, institute are utilized
The stable state phasor relation between LC filter and electric moter voltage/electric current is stated, obtains motor output voltage UmProcess, comprising:
According toSeek the pressure drop U of inductance in the LC filterL；Wherein,For output current of frequency converter phasor,For the pressure drop phasor of the inductance；
According toβ=90 °+θoSeek motor output voltage Um；Wherein, β is the electricity
The pressure drop phasor of senseWith frequency converter output voltage phasorAngle.
3. the permanent magnet synchronous motor magnetic pole position estimation method as claimed in claim 2 with LC filter, which is characterized in that root
According to the output parameter of the frequency converter and the passive element parameter of the LC filter, filtered using the frequency converter, the LC
Stable state phasor relation between device and electric moter voltage/electric current show that motor exports electric current ImProcess, comprising:
According toSeek the electric current I of capacitor in the LC filterC；Wherein,For the electric current phase of the capacitor
Amount；
According toSeek the frequency converter output voltage phasorWith the motor output voltage phasorAngle δ；
According toSeek motor output electric current Im；Wherein,It is described
Output current of frequency converter phasorWith the electric current phasor of the capacitorAngle.
4. the permanent magnet synchronous motor magnetic pole position estimation method as claimed in claim 3 with LC filter, which is characterized in that root
According to the output parameter of the frequency converter and the passive element parameter of the LC filter, filtered using the frequency converter, the LC
Stable state phasor relation between device and electric moter voltage/electric current obtains motor power factor angle θmProcess, comprising:
According toSeek motor output electric current phasorWith the electric current phasor of the capacitorAngle α；
According to θm=90 ° of-α seek motor power factor angle θm。
5. a kind of permanent magnet synchronous motor position of magnetic pole estimating system of band LC filter characterized by comprising
Parameter acquisition module, for obtaining the output parameter of frequency converter and the passive element parameter of LC filter；
Motor calculates module, for according to the output parameter of the frequency converter and the passive element parameter of the LC filter, benefit
With the stable state phasor relation between the frequency converter, the LC filter and electric moter voltage/electric current, motor output voltage is obtained
Um, motor export electric current ImAnd motor power factor angle θm；
Angle seeks module, is used for basisSeek motor output voltage
PhasorWith winding back emf EoAngle σ；Wherein, XqFor motor quadrature axis induction reactance, RsFor motor stator resistance；
Magnetic pole determining module is used for basisSeek rotor magnetic polar angleWherein, θuFor motor output
Voltage phasorWith the angle of motor A axis.
6. the permanent magnet synchronous motor position of magnetic pole estimating system as claimed in claim 5 with LC filter, which is characterized in that institute
Parameter acquisition module is stated to be specifically used for obtaining frequency converter output voltage UO, output current of frequency converter IOAnd transducer power factor angle
θo, and obtain the inductance parameters L and capacitance parameter C of LC filter；
And the motor calculates that module includes that voltage calculates that submodule, electric current calculate that submodule and power-factor angle calculate submodule
Block；Wherein, the voltage calculates that submodule includes:
Inductive drop seeks unit, is used for basisSeek the pressure drop U of inductance in the LC filterL；Wherein,
For output current of frequency converter phasor,For the pressure drop phasor of the inductance；
Electric moter voltage seeks unit, is used for basisβ=90 °+θoSeek motor output
Voltage Um；Wherein, β is the pressure drop phasor of the inductanceWith frequency converter output voltage phasorAngle.
7. the permanent magnet synchronous motor position of magnetic pole estimating system as claimed in claim 6 with LC filter, which is characterized in that institute
It states electric current and calculates that submodule includes:
Capacitance current seeks unit, is used for basisSeek the electric current I of capacitor in the LC filterC；Its
In,For the electric current phasor of the capacitor；
Voltage angle seeks unit, is used for basisSeek the frequency converter output voltage phasorWith
The motor output voltage phasorAngle δ；
Current of electric seeks unit, is used for basisIt is defeated to seek motor
Electric current I outm；Wherein,For the output current of frequency converter phasorWith the electric current phasor of the capacitorAngle.
8. the permanent magnet synchronous motor position of magnetic pole estimating system as claimed in claim 7 with LC filter, which is characterized in that institute
It states power-factor angle and calculates that submodule includes:
Electric current angle seeks unit, is used for basisSeek motor output electric current phasorWith the electricity
The electric current phasor of appearanceAngle α；
Power-factor angle seeks unit, for according to θm=90 ° of-α seek motor power factor angle θm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626445.5A CN109495027B (en) | 2018-12-28 | 2018-12-28 | Permanent magnet synchronous motor magnetic pole position estimation method and system with LC filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626445.5A CN109495027B (en) | 2018-12-28 | 2018-12-28 | Permanent magnet synchronous motor magnetic pole position estimation method and system with LC filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109495027A true CN109495027A (en) | 2019-03-19 |
| CN109495027B CN109495027B (en) | 2020-11-17 |
Family
ID=65713075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811626445.5A Active CN109495027B (en) | 2018-12-28 | 2018-12-28 | Permanent magnet synchronous motor magnetic pole position estimation method and system with LC filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109495027B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417319A (en) * | 2019-07-31 | 2019-11-05 | 深圳市英威腾电气股份有限公司 | Motor rotor position estimation method, system and associated component with filter |
| CN114598218A (en) * | 2022-03-24 | 2022-06-07 | 中国矿业大学 | Permanent magnet synchronous motor position sensorless control method, device and system with LC filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043617A (en) * | 1997-03-07 | 2000-03-28 | Fuji Electric Co., Ltd. | Variable speed driving apparatus for induction machines |
| CN101911461A (en) * | 2008-01-11 | 2010-12-08 | 日立空调·家用电器株式会社 | Power conversion device, power conversion device module, air conditioner, and freezing device |
| CN104267243A (en) * | 2014-10-08 | 2015-01-07 | 国家电网公司 | Method and device for measuring parameters of inner potential and reactance of synchronous generator |
| CN105186946A (en) * | 2015-09-30 | 2015-12-23 | 矽力杰半导体技术(杭州)有限公司 | High-efficiency driving circuit and driving method for permanent magnet synchronous motor |
-
2018
- 2018-12-28 CN CN201811626445.5A patent/CN109495027B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043617A (en) * | 1997-03-07 | 2000-03-28 | Fuji Electric Co., Ltd. | Variable speed driving apparatus for induction machines |
| CN101911461A (en) * | 2008-01-11 | 2010-12-08 | 日立空调·家用电器株式会社 | Power conversion device, power conversion device module, air conditioner, and freezing device |
| CN104267243A (en) * | 2014-10-08 | 2015-01-07 | 国家电网公司 | Method and device for measuring parameters of inner potential and reactance of synchronous generator |
| CN105186946A (en) * | 2015-09-30 | 2015-12-23 | 矽力杰半导体技术(杭州)有限公司 | High-efficiency driving circuit and driving method for permanent magnet synchronous motor |
Non-Patent Citations (1)
| Title |
|---|
| 杜平: "基于无位置传感器技术的永磁同步电机控制***研究", 《中国优秀硕士学位论文全文数据库（工程科技Ⅱ辑）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417319A (en) * | 2019-07-31 | 2019-11-05 | 深圳市英威腾电气股份有限公司 | Motor rotor position estimation method, system and associated component with filter |
| CN110417319B (en) * | 2019-07-31 | 2021-10-22 | 深圳市英威腾电气股份有限公司 | Motor rotor position estimation method with filtering device, system and related assembly |
| CN114598218A (en) * | 2022-03-24 | 2022-06-07 | 中国矿业大学 | Permanent magnet synchronous motor position sensorless control method, device and system with LC filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109495027B (en) | 2020-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106788071B (en) | A method of improving permanent-magnet synchronous motor rotor position estimated accuracy | |
| CN105577060B (en) | A kind of AC Motor Driver Control System and control method for reducing DC bus capacitor | |
| CN107222135B (en) | A kind of D-C brushless electric machine no-position sensor control system phase change control method | |
| CN104467597B (en) | A kind of V/F control methods inhibiting induction conductivity current oscillation | |
| CN101615876B (en) | Timing control system and method for non-salient pole permanent magnet synchronous motor | |
| CN102710188A (en) | Direct torque control method and device of brushless continuous current dynamo | |
| CN110518852A (en) | Permanent magnet synchronous motor current harmonics suppressing method based on harmonic injection | |
| CN108712122A (en) | The discrimination method and device for identifying of the permanent magnet flux linkage of permanent magnet synchronous motor | |
| CN104506092A (en) | Switched reluctance motor current hysteresis control method based on inductance Fourier decomposition | |
| CN109495027A (en) | Permanent magnet synchronous motor magnetic pole position estimation method and system with LC filter | |
| CN102710209A (en) | Identification method for offline static parameter of alternating current asynchronous motor | |
| CN110880897A (en) | Motor control method and device and driving device | |
| CN110086398A (en) | A kind of Direct Torque Control based on duty ratio control | |
| CN105429547B (en) | Single-phase brushless direct-current motor vector control method based on virtual phase structure | |
| CN104315651A (en) | Control method and controller for single-phase variable-frequency air conditioner | |
| Basar et al. | Comparison of sensorless FOC and SVM-DTFC of PMSM for low-speed applications | |
| CN116191964B (en) | Sinusoidal electric excitation doubly salient motor control method based on vector resonance controller | |
| CN110417319B (en) | Motor rotor position estimation method with filtering device, system and related assembly | |
| CN104953910A (en) | Permanent magnet synchronous motor as well as control method and device thereof | |
| CN107070318B (en) | A kind of harmonic analysis method of permanent-magnet brushless DC electric machine commutation torque ripple | |
| WO2023024029A1 (en) | Control method and apparatus for permanent-magnet synchronous electric motor, and permanent-magnet synchronous electric motor control system | |
| CN213846578U (en) | Voltage reduction circuit for frequency conversion control of long-line cable permanent magnet synchronous motor | |
| CN104218872B (en) | The control method that motor is powered and device, motor and compressor | |
| CN115549537A (en) | Control method and system of embedded permanent magnet motor, household appliance and storage medium | |
| CN109905057B (en) | Low-current harmonic control system of permanent magnet synchronous motor |
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 |