CN109462354A - Method for inhibiting the single-rotor compressor fluctuation of speed - Google Patents
Method for inhibiting the single-rotor compressor fluctuation of speed Download PDFInfo
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- CN109462354A CN109462354A CN201811526513.0A CN201811526513A CN109462354A CN 109462354 A CN109462354 A CN 109462354A CN 201811526513 A CN201811526513 A CN 201811526513A CN 109462354 A CN109462354 A CN 109462354A
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- 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
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- 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
- H02P23/04—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
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- 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
- H02P23/18—Controlling the angular speed together with angular position or phase
- H02P23/183—Controlling the angular speed together with angular position or phase of one shaft without controlling the prime mover
Abstract
The invention discloses a kind of for inhibiting the method for the single-rotor compressor fluctuation of speed, including the process according to real-time angular speed and Torque Control compressor；The process that compressor is controlled according to real-time angular speed includes: that axis error is filtered, and obtains angular rate compensation amount；By the compensation of angular rate compensation amount into the output angular velocity of phaselocked loop adjuster, compensated angular speed output quantity is obtained；Real-time angular speed is corrected according to the compensated angular speed output quantity, compressor is controlled according to revised real-time angular speed；Process according to Torque Control compressor includes: the difference for calculating target angular velocity undulate quantity and feeding back angular speed amount, obtains the first angular speed difference；The first angular speed difference is filtered, filtering angular speed is obtained；By the filtering turning rate input to velocity loop regulator, output torque is obtained；Compressor is controlled according to the output torque.With the application of the invention, can be improved the validity that compressor rotary speed fluctuation inhibits.
Description
Technical field
The invention belongs to motor control technology fields, specifically, be to be related to compressor control technology, more specifically,
It is the method being related to for inhibiting the single-rotor compressor fluctuation of speed.
Background technique
The single-rotor compressor that air conditioner uses at runtime, by itself working principle of the air conditioner as load and control
The influence of technology processed easily causes the biggish fluctuation of speed, compressor operation so that the load torque of compressor is extremely unstable
It is unstable.And compressor operation it is unstable will lead to entire air-conditioner system fluctuation of service, cause a variety of adverse effects.And not
Stable operation can also generate biggish operation noise, not be able to satisfy coherent noise standard requirements, influence air conditioner and use comfortably
Property.This phenomenon is particularly acute in single-rotor compressor.
Although the prior art there is also the method that compressor rotary speed controls, it is inadequate to fluctuation of speed inhibitory effect
Ideal cannot fundamentally solve the problems, such as that compressor rotary speed fluctuates.
Summary of the invention
The object of the present invention is to provide a kind of for inhibiting the method for the single-rotor compressor fluctuation of speed, improves to compressor
Revolving speed carries out the validity of fluctuation inhibition.
For achieving the above object, the present invention, which adopts the following technical solutions, is achieved:
A method of for inhibiting the single-rotor compressor fluctuation of speed, the method includes being controlled according to real-time angular speed
The process of compressor and process according to Torque Control compressor；
The process of the real-time angular speed control compressor of the basis includes:
Obtain the axis error Δ θ of the physical location of reflection compressor drum and the deviation of estimated position；
The axis error Δ θ is filtered, the amendment axis error Δ after at least filtering out the fluctuation of part axis error is obtained
θ ' and angular rate compensation amount P_out corresponding with the amendment axis error Δ θ '；
By the output angle of angular rate compensation amount P_out compensation to phaselocked loop adjuster in compressor control phaselocked loop
In speed Δ ω _ PLL, compensated angular speed output quantity Δ ω ', Δ ω '=P_out+ Δ ω _ PLL are obtained；
The real-time angular velocity omega 1 of compressor control is corrected according to the compensated angular speed output quantity Δ ω ',
Compressor is controlled according to revised real-time angular velocity omega 1；
The process according to Torque Control compressor includes:
The difference of target angular velocity undulate quantity and the feedback angular speed amount is calculated, the first angular speed difference is obtained；It is described anti-
Present flip-flop P_DC and the compensated angular speed output quantity Δ that angular speed amount is the angular rate compensation amount P_out
The sum of ω '；
The first angular speed difference is filtered, the filtering angle speed after at least filtering out part angular velocity fluctuation is obtained
Degree；
It is input to the velocity loop regulator in compressor control speed ring using the filtering angular speed as input quantity, is obtained
Obtain the output torque of the velocity loop regulator；
Compressor is controlled according to the output torque；
Described that the first angular speed difference is filtered, acquisition at least filters out the filtering after the angular velocity fluctuation of part
Angular speed specifically includes:
Part angular velocity fluctuation in the first angular speed difference is extracted using velocity perturbation extraction algorithm, extracts institute
State the flip-flop of part angular velocity fluctuation, calculate the direct current of the first angular speed difference and the part angular velocity fluctuation at
The difference divided, the difference are determined as the filtering angular speed.
Compared with prior art, the advantages and positive effects of the present invention are: inhibition single-rotor compressor provided by the invention
The method of the fluctuation of speed makees wave by the axis error Δ θ of the deviation of physical location and estimated position to reflection compressor drum
It is dynamic to filter out, the corresponding angular rate compensation amount compensation of the amendment axis error after part axis error fluctuates will be at least filtered out to phaselocked loop tune
In the output angular velocity for saving device, compensated angular speed output quantity is obtained, further according to compensated angular speed output quantity to compression
The real-time angular speed of machine is corrected, and when controlling with revised real-time angular speed compressor, enables to rotating speed of target
Variation and phase close to the variation and phase of actual speed, so that the operation of compressor is tended to be steady；Moreover, because axis
The fluctuation of error is the front end direct factor for causing velocity perturbation, therefore, by filtering out in front end to the fluctuation of axis error, is subtracted
The cyclic fluctuation of few axis error, can be realized and more directly, rapidly inhibit to the fluctuation of speed, improve the effective of revolving speed control
Property.In addition, will at least filter out segment angle by the way that feedback angular speed amount and the difference of target angular velocity undulate quantity to be filtered
Filtering angular speed after velocity perturbation is input in velocity loop regulator as input quantity, can reduce the defeated of velocity loop regulator
The fluctuation of torque out, when controlling compressor according to output torque, it is possible to reduce compressor rotary speed fluctuation, so that compressor operation
It is more stable；Compressor operation is stablized, moreover it is possible to achieve the effect that energy conservation, vibration damping.
After a specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Detailed description of the invention
Fig. 1 is the part process of method one embodiment based on the present invention for inhibiting the single-rotor compressor fluctuation of speed
Figure；
Fig. 2 is another part of method one embodiment based on the present invention for inhibiting the single-rotor compressor fluctuation of speed
Flow chart；
Fig. 3 is a control block diagram based on Fig. 1 and Fig. 2 embodiment of the method；
Fig. 4 is the logic diagram of Fig. 3 axis fluctuating error one specific example of filtering algorithm；
Fig. 5 is the logic diagram of one specific example of velocity perturbation extraction algorithm in Fig. 3.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to drawings and examples,
Invention is further described in detail.
Fig. 1 and Fig. 2 is respectively illustrated based on the present invention for inhibiting one reality of method of the single-rotor compressor fluctuation of speed
Apply the partial process view of example.Specifically, it includes that there are two processes which, which inhibits the method for the fluctuation of speed: one is basis
The process of real-time angular speed control compressor, flow chart are as shown in Figure 1；One is according to the process of Torque Control compressor, stream
Journey figure is as shown in Figure 2.Below based on Fig. 1 and Fig. 2, in combination with a control block diagram shown in Fig. 3, the two mistakes are described respectively
The specific implementation of journey.
Method one embodiment for being used to inhibit the single-rotor compressor fluctuation of speed based on the present invention shown in Figure 1
Partial process view, the flow chart of compressor is specifically controlled according to real-time angular speed, the embodiment is using under including
The process for stating step, which is realized, controls compressor according to real-time angular speed:
Step 11: obtaining the axis error Δ θ of the physical location of reflection compressor drum and the deviation of estimated position.
In compressor control, the phase of compressor drum can be locked by phaselocked loop (PLL) control technology,
It is set to be locked in target phase, the control block diagram of phaselocked loop is as shown in Figure 3.In the prior art, include in compressor phaselocked loop
Phaselocked loop adjuster, generally proportional and integral controller are shown in the K of Fig. 3P_PLLAnd KI_PLL/S.Axis error Δ θ is as phaselocked loop tune
An input for saving device uses, specifically, be by axis error Δ θ and target angle undulate quantity (0) work as shown in Figure 3 is poor,
Difference is input to phaselocked loop adjuster, and the output of phaselocked loop adjuster is output angular velocity Δ ω _ PLL.It is adjusted based on phaselocked loop
Output angular velocity Δ ω _ PLL of device, phaselocked loop will export the real-time angular velocity omega 1 of compressor control, utilize the real-time angle speed
Spend control of the realization of ω 1 to rotor-position.
The axis error Δ θ for reflecting the physical location of compressor drum and the deviation of estimated position, can pass through following formula
It is calculated:
In formula,WithRespectively the d shaft voltage given value of compressor and q shaft voltage given value, IdAnd IqRespectively
The real-time d shaft current and real-time q shaft current of compressor, r*For the motor resistance of compressor,For the q axle inductance of compressor, ω1
For the real-time angular frequency of compressor.In each parameter, Id、IqAnd ω1By detection means real-time detection in the prior art, remaining
Parameter value is given value.
Step 12: axis error Δ θ being filtered, the amendment axis error after at least filtering out the fluctuation of part axis error is obtained
Δθ'。
An input due to axis error as phaselocked loop, influences the real-time angular speed of the compressor of phaselocked loop output.Such as
The fluctuation of fruit axis error is big, it will and the real-time angular speed for causing phaselocked loop to export is unstable, so that rotor locking phase is unstable, Jin Erhui
Compressor is caused the failures such as overcurrent, step-out occur.
After step 11 obtains axis error Δ θ, it is filtered, at least filters out part ripple components, is obtained extremely
Amendment axis error Δ θ ' after filtering out the fluctuation of part axis error less.The method for making to be filtered to axis error, can use existing
Technology is realized, preferred to be filtered, referring to the description of subsequent preferred embodiments.
Step 13: angular rate compensation amount P_out is obtained according to amendment axis error Δ θ '.
The step can be realized by the way of obtaining angular speed according to angle in the prior art.Preferred processing side
Formula, referring to the description of subsequent preferred embodiments.
The realization of above-mentioned steps 12 and step 13, is reflected in the control block diagram of Fig. 3, is to filter out calculation using axis error fluctuation
Method obtains angular rate compensation amount P_out.
Step 14: by angular rate compensation amount P_out compensation in compressor control phaselocked loop phaselocked loop adjuster it is defeated
In angular velocity Δ ω _ PLL, compensated angular speed output quantity Δ ω ' is obtained.Specifically, compensated angular speed output quantity
Δ ω '=P_out+ Δ ω _ PLL.
Step 15: being corrected according to real-time angular velocity omega 1 of the compensated angular speed output quantity to compressor control, root
Compressor is controlled according to revised real-time angular velocity omega 1.
Specifically, it is 0 corresponding with the target angular velocity undulate quantity in following speed ring control, determines real-time angle
The method of speed are as follows: referring to Fig. 3, compensated angular speed output quantity Δ ω ' is added with angular speed instruction ω * _ in, output pair
The real-time angular velocity omega 1 of compressor control.Wherein, angular speed instruction ω * _ in is compressor control system to fixed angular speed
The determination method of value, the value of given angular speed instruction ω * _ in is realized using the prior art.Using the target angle of speed ring
Speed wave momentum is 0, instructs ω * _ in true based on output angular velocity Δ ω _ PLL of phaselocked loop adjuster and given angular speed
Fixed real-time angular speed, so that compressor control is more accurate and stablizes.
Method one embodiment for being used to inhibit the single-rotor compressor fluctuation of speed based on the present invention shown in Figure 2
Partial process view, specifically according to the flow chart of Torque Control compressor, the embodiment is using including following step
Process realize according to Torque Control compressor:
Step 21: calculating target angular velocity undulate quantity and feed back the difference of angular speed amount, obtain the first angular speed difference.Feedback
Angular speed amount is the sum of the flip-flop P_DC and compensated angular speed output quantity Δ ω ' of angular rate compensation amount P_out.
In compressor control, the revolving speed of compressor drum can be controlled by speed ring (ASR) control technology,
It is close to setting speed.Shown in block diagram referring to Fig. 3, speed ring includes velocity loop regulator, generally proportional integration tune
Device is saved, sees the K of Fig. 3P_ASRAnd KI_ASR/S。
In this step, by the flip-flop P_DC of angular rate compensation amount P_out and compensated angular speed output quantity Δ
ω ' is used as the input of speed ring.Specifically, the flip-flop P_DC of angular rate compensation amount P_out is extracted, is calculated straight
The sum of ingredient P_DC and compensated angular speed output quantity Δ ω ' are flowed, feedback angular speed amount Δ ω 1, Δ ω 1=P_DC+ are obtained
Δω'.Wherein, the flip-flop P_DC of angular rate compensation amount P_out is extracted, it can be using the existing technology for extracting flip-flop
It realizes, for example, the flip-flop P_DC of angular rate compensation amount P_out is extracted using low-pass filter.
Then, the difference of target angular velocity undulate quantity and angular speed output quantity Δ ω ' is calculated, the difference of the two is determined as first
Angular speed difference DELTA ω 2.Wherein, target angular velocity undulate quantity is desired angular velocity fluctuation amount, is known input quantity.As
Preferred embodiment, in this embodiment, target angular velocity undulate quantity are 0.
Step 22: the first angular speed difference being filtered, acquisition at least filters out the filtering after the angular velocity fluctuation of part
Angular speed.
Input of the first angular speed difference as velocity loop regulator influences the output torque of speed ring output.If the
The fluctuation of one angular speed difference is big, it will causes output torque fluctuation big, so that compressor rotary speed fluctuation is big.It is obtained in step 21
After obtaining the first angular speed difference, it is filtered, at least filters out part angular velocity fluctuation ingredient, obtains filtering angular speed
Δω_K。
Specifically, referring to shown in Fig. 3 block diagram, the first angular speed difference DELTA ω 2 is filtered, is at least filtered out
Filtering angular speed Δ ω _ K after the angular velocity fluctuation of part, specifically includes: extracting first jiao using velocity perturbation extraction algorithm
Part angular velocity fluctuation K_out in speed difference Δ ω 2, extracts the flip-flop K_DC of part angular velocity fluctuation K_out；
Then, the difference of the first angular speed difference DELTA ω 2 and the flip-flop K_DC of part angular velocity fluctuation is calculated, which is determined as
Filter angular speed Δ ω _ K.Wherein, the flip-flop K_DC for extracting segment angle velocity perturbation K_out, can use existing extraction
The technology of flip-flop is realized, for example, the flip-flop K_ of part angular velocity fluctuation K_out is extracted using low-pass filter
DC.Preferred filtering processing mode, referring to the description of subsequent preferred embodiments.
Step 23: filtering angular speed being input to the speed ring in compressor control speed ring as input quantity and is adjusted
Device obtains the output torque τ of velocity loop regulatorM。
Step 24: compressor of air conditioner is controlled according to output torque.Specific control process refers to the prior art.
Using the method for above-mentioned Fig. 1 and Fig. 2 embodiment constituted, realizes and speed ring and phaselocked loop are executed to compressor
Double -loop control.Also, in phase lock control, pass through the deviation to the physical location and estimated position for reflecting compressor drum
Axis error Δ θ makees fluctuation and filters out, and will at least filter out the corresponding angular rate compensation amount of amendment axis error after part axis error fluctuates
In the output angular velocity for compensating phaselocked loop adjuster, compensated angular speed output quantity is obtained, further according to compensated angle speed
Degree output quantity corrects the real-time angular speed of compressor, when being controlled with revised real-time angular speed compressor, energy
Enough so that the variation and phase of rotating speed of target make the operation of compressor tend to be flat close to the variation and phase of actual speed
Surely.Moreover, because the fluctuation of axis error is the front end direct factor for causing velocity perturbation, therefore, by front end to axis error
Fluctuation filter out, reduce the cyclic fluctuation of axis error, can be realized to the fluctuation of speed more directly, rapidly inhibit, improve
The validity of revolving speed control.In the control of speed ring, by the way that the difference of angular speed amount Yu target angular velocity undulate quantity will be fed back
Value is filtered, and will at least filter out the filtering angular speed after the angular velocity fluctuation of part and is input to speed ring as input quantity and adjusts
In device, the fluctuation of the output torque of velocity loop regulator can reduce, when controlling compressor according to output torque, it is possible to reduce
Compressor rotary speed fluctuation, so that compressor operation is more stable；Compressor operation is stablized, moreover it is possible to achieve the effect that energy conservation, vibration damping.
In some other embodiment, axis error Δ θ is filtered, after acquisition at least filters out the fluctuation of part axis error
Amendment axis error Δ θ ', specifically include: axis error Δ θ be filtered, at least filter out the first harmonic ingredient in Δ θ,
Obtain the amendment axis error Δ θ ' at least filtering out first harmonic ingredient.A kind of embodiment more preferably, to axis error Δ θ
It is filtered, including filtering out first harmonic ingredient and second harmonic ingredient in Δ θ, acquisition filters out first harmonic ingredient and two
The amendment axis error Δ θ ' of subharmonic ingredient.By filtering out the first harmonic ingredient in Δ θ, or filter out first harmonic ingredient and
Second harmonic ingredient can filter out most of ripple components in Δ θ, and calculation amount is moderate, and it is fast to filter out speed.
The logic diagram that Fig. 4 shows Fig. 3 axis fluctuating error one specific example of filtering algorithm is specifically to obtain
Obtain angle speed corresponding with the amendment axis error Δ θ ' after the first harmonic ingredient and second harmonic ingredient filtered out in axis error Δ θ
Spend the logic diagram of a specific example of compensation rate P_out.Specific acquisition process is as follows:
Firstly, axis error Δ θ is made Fourier expansion, axis error Δ θ is obtained about mechanical angle θmFunction representation
Formula.It is specific as follows:
In formula, Δ θDCFor the DC component of axis error, θd_n=θpeak_ncosφn, θq_n=θpeak_nsinφn,
Δθpeak_nFor nth harmonic axis error fluctuation amplitude, θm1、θm2For first harmonic mechanical angle.And second harmonic mechanical angle θm2It indicates
Are as follows: θm2=2 θm1。
Then, first harmonic ingredient and second harmonic ingredient are extracted from function expression, filter out one using integrator
Subharmonic ingredient and second harmonic ingredient, acquisition filter out result.
Specifically, low pass filtering method or integration method can be used, is extracted from above-mentioned function expression primary humorous
Wave component and second harmonic ingredient.Specific in Fig. 4, by function expression respectively with cos θm1With cos θm2After multiplication, through too low
Bandpass filter filtering takes integral mean in the period by integrator, extracts the d axis component of the first harmonic of axis error Δ θ
With the d axis component of second harmonic；By function expression respectively with-sin θm1With-sin θm2After multiplication, filtered by low-pass filter
Wave takes integral mean in the period by integrator, extracts the q axis component and second harmonic of the first harmonic of axis error Δ θ
Q axis component.Then, by the d axis component of the d axis component of first harmonic, q axis component and second harmonic, q axis component respectively with 0
Make poor, input to integrator KI_PMake integral in/S and filters out processing, acquisition filters out filtering out for first harmonic ingredient and second harmonic ingredient
As a result, and filtering out result and becoming angular speed.
Subsequently, will respectively filter out result and make inverse Fourier transform, obtain and filter out first harmonic ingredient and second harmonic at
The corresponding angular rate compensation amount P_out of amendment axis error Δ θ ' divided.Specifically, the d axis component of first harmonic is filtered out
The result that filters out for the q axis component for filtering out result and filtering out first harmonic does the sum of the result after inverse Fourier transform respectively, is formed
Filter out the corresponding angular rate compensation amount P_out1 of amendment axis error of first harmonic ingredient；Filter out the d axis component of second harmonic
The result that filters out for the q axis component for filtering out result and filtering out second harmonic does the sum of the result after inverse Fourier transform respectively, is formed
Filter out the corresponding angular rate compensation amount P_out2 of amendment axis error of second harmonic ingredient；The sum of two angular rate compensation amounts, shape
At angular rate compensation amount P_out=corresponding with the amendment axis error Δ θ ' for filtering out first harmonic ingredient and second harmonic ingredient
P_out1+P_ou2。
It preferably, can also be by increasing control of the enabled switch realization to harmonic filtration.Specifically,
In Fig. 4 block diagram, Gain_1, Gain_2 are enabled switch, are used to determine whether unlatching/closing filtering algorithm function.In Gain_
1, the enabled switch state of Gain_2 is in the case that unlatching filters out first harmonic and filters out second harmonic function, to obtain and filter out
The corresponding angular rate compensation amount P_out=P_out1+ of the amendment axis error Δ θ ' of first harmonic ingredient and second harmonic ingredient
P_ou2.If the enabled switch state of Gain_1, Gain_2 are to close the case where filtering out first harmonic and filtering out second harmonic function
Under, entire axis error filter function will close, and be unable to output angular velocity compensation rate P_out.If one of them enabled switch shape
State is to open filtering algorithm function, another enabled switch is to close filtering algorithm function, then the angular rate compensation amount P_ obtained
Out be only filter out first harmonic angular rate compensation amount (Gain_1 enable switch state for open filter out first harmonic function,
It is to close the case where filtering out second harmonic function that Gain_2, which enables switch state) or be only the angular speed benefit for filtering out second harmonic
The amount of repaying (Gain_1 enable switch state be close filter out first harmonic function, Gain_2 enable switch state be open filter out two
The case where subharmonic function).
In the embodiment for only filtering out first harmonic ingredient, it can be directly used and extract first harmonic ingredient in Fig. 4, filter out
The process of first harmonic ingredient.It certainly, also can also be by increasing enabled open in the embodiment for only filtering out first harmonic ingredient
The control realized and filtered out to first harmonic is closed, in addition specific implementation is not repeated herein referring also to Fig. 4.
In some other preferred embodiment, the portion in the first angular speed difference is extracted using velocity perturbation extraction algorithm
Subangle velocity perturbation, specifically includes: using velocity perturbation extraction algorithm, at least extracts primary humorous in the first angular speed difference
Wave component, as part angular velocity fluctuation.A kind of embodiment more preferably, is extracted using velocity perturbation extraction algorithm
Part angular velocity fluctuation in first angular speed difference, specifically includes: using velocity perturbation extraction algorithm, extracts first jiao of speed
The first harmonic ingredient and second harmonic ingredient in difference are spent, regard the sum of first harmonic ingredient and second harmonic ingredient as part
Angular velocity fluctuation.By extracting flip-flop, or extraction again after extracting the first harmonic ingredient in the first angular speed difference
Extract flip-flop again after the first harmonic ingredient and second harmonic ingredient in the first angular speed difference out, with the first angular speed
After difference makees difference, most of ripple components in the first angular speed difference can be filtered out, and calculation amount is moderate, filters out speed
Fastly.
Fig. 5 shows the logic diagram of one specific example of velocity perturbation extraction algorithm in Fig. 3, is from specifically
First harmonic ingredient and second harmonic ingredient, a specific reality for forming segment angle velocity perturbation are extracted in one angular speed difference
The logic diagram of example.Referring to Fig. 5, the specific example using following methods acquisition include first harmonic ingredient and second harmonic at
The part angular velocity fluctuation divided:
Firstly, the first angular speed difference DELTA ω 2 is made Fourier expansion, obtains the first angular speed difference DELTA ω 2 and close
In mechanical angle θmFunction expression.The process can be realized using the prior art, be not described in detail here.
Then, first harmonic ingredient and second harmonic ingredient are extracted respectively from function expression.
Specifically, as shown in figure 5, by function expression and cos θm1After multiplication, pass through low-pass filterIt is filtered, filter result makees inverse Fourier transform, obtains the d axis component of first harmonic；By function expression
With-sin θm1After multiplication, pass through low-pass filterIt is filtered, filter result makees inverse Fourier transform, obtains
The q axis component of first harmonic；Then, the d axis component of first harmonic is added with q axis component, is obtained in the first angular speed difference
First harmonic ingredient K_out1.Likewise, by function expression and cos θm2After multiplication, pass through low-pass filterIt is filtered, filter result makees inverse Fourier transform, obtains the d axis component of second harmonic；By function expression
With-sin θm2After multiplication, pass through low-pass filterIt is filtered, filter result makees inverse Fourier transform, obtains
The q axis component of second harmonic；Then, the d axis component of second harmonic is added with q axis component, is obtained in the first angular speed difference
Second harmonic ingredient K_out2.Finally, first harmonic ingredient K_out1 is added with second harmonic ingredient K_out2, it is resulting
With formation segment angle velocity perturbation K_out.Wherein, θm1It is mechanical for the first harmonic in the function expression of Fourier expansion
Angle, θm2For the second harmonic mechanical angle in the function expression of Fourier expansion, and θm2=2 θm1, T_PD_filterFor low pass
Filter time constant.
After obtaining the part angular velocity fluctuation K_out comprising first harmonic ingredient and second harmonic ingredient, first is calculated
The difference of angular speed difference DELTA ω 2 and part angular velocity fluctuation K_out then filters angular speed as filtering angular speed Δ ω _ K
Δ ω _ K is the filtering angular speed filtered out after first harmonic ingredient and second harmonic ingredient.
Preferably, the control extracted to harmonic wave can also be realized by increasing enabled switch.Specifically,
In Fig. 5 block diagram, Gain_1, Gain_2 are enabled switch, are used to determine whether unlatching/closing extraction algorithm function.In Gain_
1, the enabled switch state of Gain_2 is to obtain primary humorous in the case where opening extraction first harmonic and extracting second harmonic function
The part angular velocity fluctuation that wave component and second harmonic ingredient are constituted: K_out=K_out1+K_out2.If Gain_1, Gain_2
Enabled switch state be in the case where closing and extracting first harmonic and extract second harmonic function, entire velocity perturbation, which is extracted, calculates
Method function will close, and part angular velocity fluctuation is 0.If one of them enabled switch state is to open extraction algorithm function, separately
For one enabled switch to close extraction algorithm function, then the part angular velocity fluctuation obtained is only one in the first angular speed difference
(the enabled switch state of Gain_1 is unlatching extraction first harmonic function to subharmonic ingredient, the enabled switch state of Gain_2 is closing
The case where extracting second harmonic function) or only the first angular speed difference in second harmonic ingredient (the enabled switch of Gain_1
State is to close to extract the case where enabled switch state of first harmonic function, Gain_2 is unlatching extraction second harmonic function).
In the embodiment for only extracting first harmonic ingredient, the mistake that first harmonic ingredient is extracted in Fig. 5 can be directly used
Journey；Certainly, also the control extracted to first harmonic can also be realized by increasing enabled switch, specific implementation is referring also to figure
5, it does not in addition repeat herein.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although referring to aforementioned reality
Applying example, invention is explained in detail, for those of ordinary skill in the art, still can be to aforementioned implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for claimed technical solution of the invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of for inhibiting the method for the single-rotor compressor fluctuation of speed, which is characterized in that the method includes according in real time
Angular speed controls the process of compressor and the process according to Torque Control compressor；
The process of the real-time angular speed control compressor of the basis includes:
Obtain the axis error Δ θ of the physical location of reflection compressor drum and the deviation of estimated position；
The axis error Δ θ is filtered, obtain at least filter out part axis error fluctuation after amendment axis error Δ θ ' with
And angular rate compensation amount P_out corresponding with the amendment axis error Δ θ '；
By the output angular velocity of angular rate compensation amount P_out compensation to phaselocked loop adjuster in compressor control phaselocked loop
In Δ ω _ PLL, compensated angular speed output quantity Δ ω ', Δ ω '=P_out+ Δ ω _ PLL are obtained；
The real-time angular velocity omega 1 of compressor control is corrected according to the compensated angular speed output quantity Δ ω ', according to
Revised real-time angular velocity omega 1 controls compressor；
The process according to Torque Control compressor includes:
It calculates target angular velocity undulate quantity and feeds back the difference of angular speed amount, obtain the first angular speed difference；The feedback angular speed
Amount is the sum of the flip-flop P_DC and the compensated angular speed output quantity Δ ω ' of the angular rate compensation amount P_out；
The first angular speed difference is filtered, acquisition at least filters out the filtering angular speed after the angular velocity fluctuation of part；
It is input to the velocity loop regulator in compressor control speed ring using the filtering angular speed as input quantity, obtains institute
State the output torque of velocity loop regulator；
Compressor is controlled according to the output torque；
It is described that the first angular speed difference is filtered, obtain the filtering angle speed after at least filtering out part angular velocity fluctuation
Degree, specifically includes:
Part angular velocity fluctuation in the first angular speed difference is extracted using velocity perturbation extraction algorithm, extracts the portion
The flip-flop of subangle velocity perturbation calculates the flip-flop of the first angular speed difference and the part angular velocity fluctuation
Difference, the difference are determined as the filtering angular speed.
2. being obtained extremely the method according to claim 1, wherein described be filtered the axis error Δ θ
Amendment axis error Δ θ ' after filtering out the fluctuation of part axis error less, specifically includes:
The axis error Δ θ is filtered, the first harmonic ingredient in Δ θ is at least filtered out, acquisition at least filters out primary humorous
The amendment axis error Δ θ ' of wave component.
3. according to the method described in claim 2, further including it is characterized in that, described be filtered the axis error Δ θ
The second harmonic ingredient in Δ θ is filtered out, the amendment axis error Δ θ ' for filtering out first harmonic ingredient and second harmonic ingredient is obtained.
4. according to the method described in claim 2, it is characterized in that, filtering out repairing for first harmonic ingredient using the acquisition of following processes
Positive axis error delta θ ' and angular rate compensation amount P_out corresponding with the amendment axis error Δ θ ':
The axis error Δ θ is made into Fourier expansion, obtains axis error about mechanical angle θmFunction expression；
The first harmonic ingredient that axis error Δ θ is extracted from the function expression is filtered out described primary humorous using integrator
Wave component, acquisition filter out result；
The result that filters out is made into inverse Fourier transform, is obtained corresponding with the amendment axis error Δ θ ' of first harmonic ingredient is filtered out
Angular rate compensation amount P_out.
5. according to the method described in claim 4, it is characterized in that, described extract axis error Δ from the function expression
The first harmonic ingredient of θ, specifically includes:
Using low pass filtering method or integration method, the first harmonic ingredient of axis error Δ θ is extracted from the function expression.
6. the method according to any one of claims 1 to 5, which is characterized in that described to use velocity perturbation extraction algorithm
The part angular velocity fluctuation in the first angular speed difference is extracted, is specifically included:
Using velocity perturbation extraction algorithm, the first harmonic ingredient in the first angular speed difference is at least extracted, as institute
State part angular velocity fluctuation.
7. according to the method described in claim 6, it is characterized in that, the use velocity perturbation extraction algorithm, extracts described
First harmonic ingredient in first angular speed difference, specifically includes:
The first angular speed difference is made into Fourier expansion, obtains the function expression about mechanical angle；
Extract the d axis component and q axis component of first harmonic respectively from the function expression；
The d axis component of the first harmonic is added with q axis component, obtain first harmonic in the first angular speed difference at
Point.
8. according to the method described in claim 6, it is characterized in that, described extract described the using velocity perturbation extraction algorithm
Part angular velocity fluctuation in one angular speed difference, further includes: use velocity perturbation extraction algorithm, extract first jiao of speed
The second harmonic ingredient in difference is spent, regard the sum of the first harmonic ingredient and the second harmonic ingredient as the segment angle
Velocity perturbation.
9. according to the method described in claim 8, it is characterized in that, the use velocity perturbation extraction algorithm, extracts described
Second harmonic ingredient in first angular speed difference, specifically includes:
The first angular speed difference is made into Fourier expansion, obtains the function expression about mechanical angle；
Extract the d axis component and q axis component of second harmonic respectively from the function expression；
The d axis component of the second harmonic is added with q axis component, obtain second harmonic in the second angular speed difference at
Point.
10. the method according to claim 1, wherein the target angular velocity undulate quantity is 0；It is described according to institute
It states compensated angular speed output quantity Δ ω ' to correct the real-time angular velocity omega 1 of compressor control, according to revised reality
When angular velocity omega 1 control compressor, specifically include: will the compensated angular speed output quantity Δ ω ' with give angular speed
Instruction is added, and the result of addition is determined as the revised real-time angular velocity omega 1, according to the revised real-time angular speed
ω 1 controls compressor.
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| CN101635555A (en) * | 2008-07-23 | 2010-01-27 | 日立空调·家用电器株式会社 | Motor control device, motor control system, motor control module and refrigerating unit |
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| CN102522941A (en) * | 2011-12-21 | 2012-06-27 | 海尔集团公司 | Method for suppressing low-frequency vibration of compressor and system for suppressing low-frequency vibration of compressor |
| CN104038127A (en) * | 2013-03-07 | 2014-09-10 | 日立空调·家用电器株式会社 | Motor control device |
| CN106788071A (en) * | 2017-01-06 | 2017-05-31 | 南京航空航天大学 | A kind of method for improving permanent-magnet synchronous motor rotor position estimated accuracy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8169172B2 (en) * | 2010-05-03 | 2012-05-01 | Hamilton Sundstrand Corporation | Synchronous disturbance suppression in a variable speed motor drive |
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| EP1961643B1 (en) * | 2007-02-26 | 2010-08-04 | Jtekt Corporation | Motor controller and electric power steering apparatus |
| CN101635555A (en) * | 2008-07-23 | 2010-01-27 | 日立空调·家用电器株式会社 | Motor control device, motor control system, motor control module and refrigerating unit |
| CN102522941A (en) * | 2011-12-21 | 2012-06-27 | 海尔集团公司 | Method for suppressing low-frequency vibration of compressor and system for suppressing low-frequency vibration of compressor |
| CN104038127A (en) * | 2013-03-07 | 2014-09-10 | 日立空调·家用电器株式会社 | Motor control device |
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