CN106655953B - No electrolytic capacitor motor driven systems and its field weakening control method and control device - Google Patents
No electrolytic capacitor motor driven systems and its field weakening control method and control device Download PDFInfo
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- CN106655953B CN106655953B CN201610899820.8A CN201610899820A CN106655953B CN 106655953 B CN106655953 B CN 106655953B CN 201610899820 A CN201610899820 A CN 201610899820A CN 106655953 B CN106655953 B CN 106655953B
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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
- H02P23/0004—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
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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
- H02P23/0086—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for high speeds, e.g. above nominal speed
- H02P23/009—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for high speeds, e.g. above nominal speed using field weakening
Abstract
The invention discloses a kind of no electrolytic capacitor motor driven systems and its field weakening control methods and control device.The field weakening control method includes: the real-time current DC bus-bar voltage obtained in motor driven systems；Integral coefficient corresponding with the current DC bus-bar voltage is obtained according to the corresponding relationship of known DC bus-bar voltage and the integral coefficient of processor, as current integration coefficient；Target weak magnetoelectricity stream is obtained according to the current DC bus-bar voltage, current goal voltage and the current integration coefficient；It is controlled according to the weak magnetic of the target weak magnetoelectricity stream actuating motor drive system.With the application of the invention, being able to satisfy the demand that no electrolytic capacitor motor driven systems control motor speed.
Description
Technical field
The invention belongs to technical field of motors, specifically, being to be related to no electrolytic capacitor motor driven systems and its weak magnetic
Control method and control device.
Background technique
Continuous promotion with user to electronic product performance requirement, the service life and it is more efficient, cost is lower electroless
Capacitor motor drive system is more and more widely used.No electrolytic capacitor motor driven systems be eliminate large capacity,
High cost, service life it is short electrolytic capacitor and step-up device instead capacity be small, thin-film capacitor that at low cost, service life is long
Or ceramic condenser.
In motor driven systems, when motor speed is higher, the counter electromotive force of rotor cutting stator coil generation
Also higher.Energy is provided in order to rotate to motor, overcomes the problems, such as to fall high counter electromotive force bring energy input difficulty, tradition
Motor driven systems can pass through step-up device and big capacity electrolyte capacitor and promote the DC bus-bar voltage after rectification.And direct current
When busbar voltage reaches the limitation of promotion, it is necessary to rotor field is weakened using weak magnetic technology, to reduce counter electromotive force generation
Voltage, achieve the purpose that continue to rotate input capability to motor, promote revolving speed.In this no electrolytic capacitor motor driven systems
In, due to eliminating the electrolytic capacitor and step-up device of large capacity, to promote the revolving speed of motor, weak magnetic control can only be carried out.
And busbar voltage and tradition electricity after the rectification of the no electrolytic capacitor motor driven systems due to removing electrolytic capacitor and step-up device
Machine drive system difference is larger, and traditional field weakening control method is difficult to meet motor speed demand for control.
Summary of the invention
On the one hand the purpose of the present invention is to provide field weakening control method and the control of a kind of no electrolytic capacitor motor driven systems
Device processed meets the needs of no electrolytic capacitor motor driven systems control motor speed.
For achieving the above object, the field weakening control method of no electrolytic capacitor motor driven systems provided by the invention is adopted
It is achieved with following technical proposals:
A kind of field weakening control method of no electrolytic capacitor motor driven systems, which comprises
The current DC bus-bar voltage in motor driven systems is obtained in real time；
It is obtained and the current direct current according to the corresponding relationship of known DC bus-bar voltage and the integral coefficient of processor
The corresponding integral coefficient of busbar voltage, as current integration coefficient；The integral coefficient of the DC bus-bar voltage and processor
Corresponding relationship meet the DC bus-bar voltage amplitude and the integral coefficient correlation；
Target weak magnetic electricity is obtained according to the current DC bus-bar voltage, current goal voltage and the current integration coefficient
Stream；The current goal voltage is determined according to current goal motor speed；
It is controlled according to the weak magnetic of the target weak magnetoelectricity stream actuating motor drive system.
Method as described above, it is described according to the current DC bus-bar voltage, current goal voltage and described to work as foreset
Divide coefficient to obtain target weak magnetoelectricity stream, specifically include:
The difference of the current DC bus-bar voltage and current goal voltage is obtained, it is corresponding based on the current integration coefficient
Processor to the difference carry out proportional integration processing, obtain the target weak magnetoelectricity stream；In the proportional integration processing
Integral coefficient is the current integration coefficient, and the proportionality coefficient in the proportional integration processing is fixed coefficient.
Method as described above, the difference for obtaining the current DC bus-bar voltage and current goal voltage, is based on
The corresponding processor of the current integration coefficient carries out proportional integration processing to the difference, obtains the target weak magnetoelectricity stream,
Specifically further include:
The difference of the current DC bus-bar voltage and current goal voltage is obtained, it is corresponding based on the current integration coefficient
Processor to the difference carry out proportional integration processing, obtain basic weak magnetoelectricity stream, clipping made to the basic weak magnetoelectricity stream
It handles, the output result after amplitude limiting processing is determined as the target weak magnetoelectricity stream.
Method as described above, described that amplitude limiting processing is made to the basic weak magnetoelectricity stream, the output result after amplitude limiting processing
It is determined as the target weak magnetoelectricity stream, specifically includes:
The basic weak magnetoelectricity stream is made comparisons with setting clipping weak magnetoelectricity stream, if the basic weak magnetoelectricity stream is not less than institute
Setting clipping weak magnetoelectricity stream is stated, the setting clipping weak magnetoelectricity stream is determined as the target weak magnetoelectricity stream；If described substantially weak
Magnetoelectricity stream is less than the setting clipping weak magnetoelectricity stream, and the basic weak magnetoelectricity stream is determined as the target weak magnetoelectricity stream.
The corresponding relationship of the integral coefficient of method as described above, the known DC bus-bar voltage and processor uses
Following manner obtains:
The a cycle of DC bus-bar voltage is divided into continuous multiple subcycles, each subcycle is corresponding with a product
Divide coefficient, the one-to-one corresponding relationship of integral coefficient of all subcycles and processor in DC bus-bar voltage a cycle
The corresponding relationship of the integral coefficient of the DC bus-bar voltage and processor is formed, and DC bus electricity in each subcycle
The mean value of pressure amplitude value and one-to-one integral coefficient correlation；
It is obtained and the current direct current according to the corresponding relationship of known DC bus-bar voltage and the integral coefficient of processor
The corresponding integral coefficient of busbar voltage is specifically included as current integration coefficient:
Judge the subcycle in the affiliated DC bus-bar voltage a cycle of the current DC bus-bar voltage, works as described
Current subcycle corresponding to preceding DC bus-bar voltage；
It is corresponded according to the integral coefficient of all subcycles and processor in the DC bus-bar voltage a cycle
Corresponding relationship obtain the corresponding integral coefficient of the current subcycle, as the current integration coefficient.
To realize aforementioned invention purpose, the weak magnetic control device of no electrolytic capacitor motor driven systems provided by the invention is adopted
It is realized with following technical proposals:
A kind of weak magnetic control device of no electrolytic capacitor motor driven systems, described device include:
DC bus-bar voltage acquiring unit, for obtaining the current DC bus-bar voltage in motor driven systems in real time；
Integral coefficient acquiring unit, for being closed according to known DC bus-bar voltage is corresponding with the integral coefficient of processor
System obtains integral coefficient corresponding with the current DC bus-bar voltage, as current integration coefficient；The DC bus-bar voltage
Meet the amplitude of the DC bus-bar voltage with the corresponding relationship of the integral coefficient of processor and the integral coefficient is positively correlated
Relationship；
Target weak magnetoelectricity stream acquiring unit, for according to the current DC bus-bar voltage, current goal voltage and described
Current integration coefficient obtains target weak magnetoelectricity stream；The current goal voltage is determined according to current goal motor speed；
Weak magnetic control unit, for being controlled according to the weak magnetic of the target weak magnetoelectricity stream actuating motor drive system.
Device as described above, the target weak magnetoelectricity stream acquiring unit specifically include:
Difference obtains subelement, for obtaining the difference of the current DC bus-bar voltage Yu the current goal voltage；
Proportional integration handles subelement, for carrying out proportional integration processing to the difference, obtains the target weak magnetic electricity
Stream；Integral coefficient in the proportional integration processing is the current integration coefficient, the ratio system in the proportional integration processing
Number is fixed coefficient.
Device as described above, the proportional integration processing subelement carry out proportional integration processing to the difference, obtain
Basic weak magnetoelectricity stream；The target weak magnetoelectricity stream acquiring unit further include:
Amplitude limiting processing subelement, for making amplitude limiting processing to the basic weak magnetoelectricity stream, the output result after amplitude limiting processing
It is determined as the target weak magnetoelectricity stream.
Device as described above, the amplitude limiting processing subelement make amplitude limiting processing to the basic weak magnetoelectricity stream, at clipping
Output result after reason is determined as the target weak magnetoelectricity stream, specifically includes:
The basic weak magnetoelectricity stream is made comparisons with setting clipping weak magnetoelectricity stream, if the basic weak magnetoelectricity stream is not less than institute
Setting clipping weak magnetoelectricity stream is stated, the setting clipping weak magnetoelectricity stream is determined as the target weak magnetoelectricity stream；If described substantially weak
Magnetoelectricity stream is less than the setting clipping weak magnetoelectricity stream, and the basic weak magnetoelectricity stream is determined as the target weak magnetoelectricity stream.
The corresponding relationship of the integral coefficient of device as described above, the known DC bus-bar voltage and processor uses
Following manner obtains:
The a cycle of DC bus-bar voltage is divided into continuous multiple subcycles, each subcycle is corresponding with a product
Divide coefficient, the one-to-one corresponding relationship of integral coefficient of all subcycles and processor in DC bus-bar voltage a cycle
The corresponding relationship of the integral coefficient of the DC bus-bar voltage and processor is formed, and DC bus electricity in each subcycle
The mean value of pressure amplitude value and one-to-one integral coefficient correlation；
The integral coefficient acquiring unit is closed according to known DC bus-bar voltage is corresponding with the integral coefficient of processor
System obtains integral coefficient corresponding with the current DC bus-bar voltage and specifically includes as current integration coefficient:
Judge the subcycle in the affiliated DC bus-bar voltage a cycle of the current DC bus-bar voltage, works as described
Current subcycle corresponding to preceding DC bus-bar voltage；
It is corresponded according to the integral coefficient of all subcycles and processor in the DC bus-bar voltage a cycle
Corresponding relationship obtain the corresponding integral coefficient of the current subcycle, as the current integration coefficient.
On the other hand there is provided a kind of no electrolytic capacitor motors with above-mentioned weak magnetic control device for the purpose of the present invention
Drive system and use the air conditioner of the no electrolytic capacitor motor driven systems as driven compressor system.
Compared with prior art, the advantages and positive effects of the present invention are: using field weakening control method of the invention and control
The no electrolytic capacitor motor driven systems of device processed, according to current DC bus-bar voltage select it is corresponding, follow DC bus
The variation of voltage magnitude and be positively correlated the integral coefficient of variation as the processing parameter for determining target weak magnetoelectricity stream, can be in direct current
Faster or deeper weak magnetic controls for acquisition when busbar voltage is high, achievees the purpose that improve motor speed, solve electroless
Demand for control of the capacitor motor drive system to motor speed.
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 flow chart based on no electrolytic capacitor motor driven systems field weakening control method one embodiment of the present invention；
Fig. 2 is the process based on another embodiment of no electrolytic capacitor motor driven systems field weakening control method of the present invention
Figure；
Fig. 3 is the procedure chart that the target weak magnetoelectricity stream signal of Fig. 2 embodiment generates；
Fig. 4 is a waveform diagram of a DC bus-bar voltage in Fig. 2 embodiment；
Fig. 5 is the waveform diagram of the weak magnetoelectricity stream Id and q shaft current Iq that are obtained based on Fig. 2 embodiment；
Fig. 6 is the structural frames based on no electrolytic capacitor motor driven systems weak magnetic control device one embodiment of the present invention
Figure；
Fig. 7 is the structural frames based on another embodiment of no electrolytic capacitor motor driven systems weak magnetic control device of the present invention
Figure.
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.
Referring to Figure 1, which show based on no electrolytic capacitor motor driven systems field weakening control method one of the present invention
The flow chart of embodiment.
As schematically shown in Figure 1, the method which realizes the control of no electrolytic capacitor motor driven systems weak magnetic includes following
The process that step is constituted:
Step 11: obtaining the current DC bus-bar voltage in motor driven systems in real time.
DC bus-bar voltage is in motor driven systems after the rectified circuit rectifies of supply voltage, is transmitted to motor inversion
The voltage at busbar voltage namely the thin-film electro perhaps ceramic condenser both ends before circuit.The detection of the voltage can use existing
Technology is realized, is not limited thereto.
In the motor driven systems course of work, DC bus-bar voltage is detected in real time, obtains current DC bus
Voltage.
Step 12: integral coefficient corresponding with current DC bus-bar voltage is obtained, as current integration coefficient.
After step 11 obtains current DC bus-bar voltage, according to the integral coefficient of DC bus-bar voltage and processor
Corresponding relationship obtains integral coefficient corresponding with current DC bus-bar voltage, as current integration coefficient.Wherein, DC bus electricity
It is known and pre-stored for pressing with the corresponding relationship of the integral coefficient of processor.Moreover, to meet in corresponding relationship:
The amplitude and integral coefficient correlation of DC bus-bar voltage.That is, the amplitude of DC bus-bar voltage is bigger, integral coefficient
It is bigger；Vice versa.
Step 13: target weak magnetic electricity is obtained according to current DC bus-bar voltage, current goal voltage and current integration coefficient
Stream.
Current goal voltage be it is related to current goal motor speed, can be determined by target motor revolving speed.One
As for, be proportional to a value of target motor revolving speed.Current DC bus-bar voltage is obtained by step 11, current integration system
Number is obtained by step 12, then, obtains target based on current DC bus-bar voltage, current goal voltage and current integration coefficient
The target d shaft current of weak magnetoelectricity stream namely motor.
Step 14: being controlled according to the weak magnetic of target weak magnetoelectricity stream actuating motor drive system.
The detailed process that weak magnetic control is executed based on weak magnetoelectricity stream is the prior art, is not elaborated herein.
It, can be according to current direct current when carrying out weak magnetic control to no electrolytic capacitor motor driven systems using Fig. 1 embodiment
Busbar voltage selects variation that is corresponding, following DC bus-bar voltage amplitude and is positively correlated the integral coefficient of variation as determination
The processing parameter of target weak magnetoelectricity stream, thus can it is high in DC bus-bar voltage, obtain when energy is big faster or deeper
Weak magnetic control achievees the purpose that improve motor speed as far as possible, solves no electrolytic capacitor motor driven systems to motor speed
Demand for control.
Fig. 2 is referred to, which show another based on no electrolytic capacitor motor driven systems field weakening control method of the present invention
The flow chart of a embodiment.
As schematically shown in Figure 2, the method which realizes the control of no electrolytic capacitor motor driven systems weak magnetic includes following
The process that step is constituted:
Step 21: obtaining the current DC bus-bar voltage in motor driven systems in real time.
Step 22: integral coefficient corresponding with current DC bus-bar voltage is obtained, as current integration coefficient.
The specific implementation of step 21 and step 22 can be with reference to the description of step 11 and step 12 in Fig. 1 embodiment.
Step 23: obtaining the difference of current DC bus-bar voltage Yu current goal voltage.
Step 24: proportional integration processing being carried out to difference based on the corresponding processor of current integration coefficient, is obtained substantially weak
Magnetoelectricity stream.
Wherein, the integral coefficient in proportional integration processing is the current integration coefficient obtained in step 22, and proportional integration
Proportionality coefficient in processing is fixed coefficient.
Step 25: amplitude limiting processing being made to basic weak magnetoelectricity stream, the output result after amplitude limiting processing is determined as target weak magnetic electricity
Stream.
The purpose for executing the step is that the basic weak magnetoelectricity stream obtained after comparative example Integral Processing is defined, and avoids weak magnetic
It is too deep and cause the unstable of motor driven systems.
Specifically, doing amplitude limiting processing using following manner:
Basic weak magnetoelectricity stream is made comparisons with setting clipping weak magnetoelectricity stream, if basic weak magnetoelectricity stream is weak not less than setting clipping
Setting clipping weak magnetoelectricity stream is determined as target weak magnetoelectricity stream by magnetoelectricity stream；If basic weak magnetoelectricity stream is less than set clipping weak magnetic
Basic weak magnetoelectricity stream is determined as target weak magnetoelectricity stream by electric current.Set the preset amount of clipping weak magnetoelectricity stream and storage.
Step 26: being controlled according to the weak magnetic of target weak magnetoelectricity stream actuating motor drive system.
As preferred embodiment, in the above-described embodiments, it is known that DC bus-bar voltage and processor integration system
Several corresponding relationships is obtained using following manner:
The a cycle of DC bus-bar voltage is divided into continuous multiple subcycles, each subcycle is corresponding with a product
Divide coefficient, the one-to-one corresponding relationship of integral coefficient of all subcycles and processor in DC bus-bar voltage a cycle
Form the corresponding relationship of the integral coefficient of the DC bus-bar voltage and processor, and DC bus-bar voltage width in each subcycle
The mean value of value and one-to-one integral coefficient correlation.
So, it is obtained and current direct current according to the corresponding relationship of known DC bus-bar voltage and the integral coefficient of processor
The corresponding integral coefficient of busbar voltage is specifically included as current integration coefficient:
Judge the subcycle in the affiliated DC bus-bar voltage a cycle of current DC bus-bar voltage, it is female as current direct current
Current subcycle corresponding to line voltage；
Then, it is corresponded according to the integral coefficient of all subcycles and processor in DC bus-bar voltage a cycle
Corresponding relationship obtain the corresponding integral coefficient of current subcycle, as current integration coefficient.
Specifically, the no electrolytic capacitor motor driven systems for being 220V/50Hz for input supply voltage, rectification circuit
The waveform diagram of DC bus-bar voltage after rectification as shown in figure 4, be frequency be 100Hz, period be 10ms steamed bun waveform, frequency
Become 2 times of input supply voltage, in each period, waveform is half of sine wave, and amplitude first changes from small to big to wave crest, then from wave
Peak starts from large to small.The a cycle of DC bus-bar voltage is divided into continuous 10 subcycles, respectively subcycle 1,
Subcycle 2 ... ..., subcycle 10, when each subcycle a length of 1ms.Waveform diagram based on DC bus-bar voltage is it is found that from sub- week
Phase 1 arrives subcycle 5, and the mean value of DC bus-bar voltage amplitude becomes larger in each subcycle；From subcycle 6 to subcycle 10,
The mean value of DC bus-bar voltage amplitude gradually becomes smaller in each subcycle.Each subcycle is corresponding with an integral coefficient, from son
Period 1 arrives subcycle 10, and corresponding integral coefficient is respectively 1,2,3,4,5,5,4,3,2,1.So, current direct current is being got
When busbar voltage, first determine whether that current DC bus-bar voltage is which subcycle in the period, then, according to affiliated son
Period goes to get integral coefficient corresponding to the subcycle, as current integration coefficient, to carry out integral operation.Due to each
A length of 1ms, is equivalent to and is modified every 1ms to integral coefficient when subcycle.
The method that Fig. 3 show corresponding relationship and Fig. 2 embodiment based on above-mentioned DC bus-bar voltage and integral coefficient is raw
At the procedure chart of target weak magnetoelectricity stream signal.
It as schematically shown in Figure 3, include difference calculator 31, ratio processor 32, n integral processor in the Fig. 3
331 to 33n (such as n is 10, totally 10 integral processors), limiter 34, each integral processor are corresponding with 1 integral coefficient.
Firstly, obtaining current DC bus-bar voltage Vm_limit, current DC bus-bar voltage is determined according to current DC bus-bar voltage
Subcycle belonging in one cycle can for example be judged by the phase angle of voltage.Then, according to the subcycle
Corresponding integral coefficient determines corresponding integral processor.
Current DC bus-bar voltage V is calculated by difference calculator 31m_limitWith current goal voltageDifference,
Then, proportional integration processing is carried out to difference based on the above-mentioned integral processor determined and ratio processor 32,
Export basic weak magnetoelectricity streamIn formula, KI_FWFor the proportionality coefficient of ratio processor 32,
It is fixed value in the embodiment.TnFor determining integral coefficient, n indicates subcycle, if 10 subcycles, then 10 n=1 ....
In calculating process each time, n is to determine value.For example, in corresponding relationship as described, if current DC bus-bar voltage
Belong to the 3rd subcycle, then n=3, and Tn=T3=3.
Then, the basic weak magnetoelectricity stream obtained after 34 comparative example Integral Processing of limiter is utilizedMake amplitude limiting processing, obtains
Target weak magnetoelectricity stream Id*:
Wherein,To set clipping weak magnetoelectricity stream.
The waveform of weak magnetoelectricity stream Id (namely target weak magnetoelectricity stream) and q shaft current Iq for being obtained such as Fig. 5 based on Fig. 2 embodiment
Figure is illustrated, and when q shaft current is in peak value, d shaft current is also at peak value.Therefore, when the value of supply voltage is higher, for example locates
In wave crest, driving capability is big, is at the time of improving motor speed to obtain large energy.At this point, weak magnetic depth is also relatively deep, then may be used
To improve motor speed as much as possible, meet revolving speed demand for control.
Fig. 6 is referred to, which show based on no electrolytic capacitor motor driven systems weak magnetic control device one of the present invention
The structural block diagram of embodiment.
As schematically shown in Figure 6, which realizes the knot that the device of no electrolytic capacitor motor driven systems weak magnetic control includes
Structure unit, the function of each structural unit and mutual connection relationship are as follows:
DC bus-bar voltage acquiring unit 61, for obtaining the current DC bus-bar voltage in motor driven systems in real time.
Integral coefficient acquiring unit 62, for corresponding with the integral coefficient of processor according to known DC bus-bar voltage
Relation acquisition integral coefficient corresponding with current DC bus-bar voltage acquired in DC bus-bar voltage acquiring unit 61, as working as
Preceding integral coefficient.Wherein, the corresponding relationship of the integral coefficient of DC bus-bar voltage and processor meets the width of DC bus-bar voltage
Value and integral coefficient correlation.
Target weak magnetoelectricity stream acquiring unit 63, the current direct current for being obtained according to DC bus-bar voltage acquiring unit 61 are female
Line voltage, current goal voltageAnd the current integration coefficient that integral coefficient acquiring unit 62 obtains obtains target weak magnetoelectricity stream.
Wherein, current goal voltage is determined according to current goal motor speed.
Weak magnetic control unit 64 is executed for the target weak magnetoelectricity stream according to acquired in target weak magnetoelectricity stream acquiring unit 63
The weak magnetic of motor driven systems controls.
Each unit in the embodiment control device runs corresponding software program, according to the method realization pair of Fig. 1 embodiment
The weak magnetic of no electrolytic capacitor motor driven systems controls.
Fig. 7 is referred to, which show another based on no electrolytic capacitor motor driven systems weak magnetic control device of the present invention
The structural block diagram of a embodiment.
As schematically shown in Figure 7, which realizes the knot that the device of no electrolytic capacitor motor driven systems weak magnetic control includes
Structure unit, the function of each structural unit and mutual connection relationship are as follows:
DC bus-bar voltage acquiring unit 71, for obtaining the current DC bus-bar voltage in motor driven systems in real time.
Integral coefficient acquiring unit 72, for corresponding with the integral coefficient of processor according to known DC bus-bar voltage
Relation acquisition integral coefficient corresponding with current DC bus-bar voltage acquired in DC bus-bar voltage acquiring unit 71, as working as
Preceding integral coefficient.Wherein, the corresponding relationship of the integral coefficient of DC bus-bar voltage and processor meets the width of DC bus-bar voltage
Value and integral coefficient correlation.
Target weak magnetoelectricity stream acquiring unit 73, the current direct current for being obtained according to DC bus-bar voltage acquiring unit 61 are female
Line voltage, current goal voltageAnd the current integration coefficient that integral coefficient acquiring unit 62 obtains obtains target weak magnetoelectricity stream.
Wherein, current goal voltage is determined according to current goal motor speed.
Wherein, 73 specific structure of target weak magnetoelectricity stream acquiring unit is to include:
Difference obtains subelement 731, for obtaining current DC bus acquired in DC bus-bar voltage acquiring unit 71
Voltage and current goal voltageDifference.
Proportional integration handles subelement 732, carries out at proportional integration for obtaining the difference that subelement 731 obtains to difference
Reason, obtains basic weak magnetoelectricity stream.Wherein, the integral coefficient in proportional integration processing is working as the acquisition of integral coefficient acquiring unit 72
Preceding integral coefficient, and the proportionality coefficient in proportional integration processing is preferably fixed coefficient.
Amplitude limiting processing subelement 733, the basic weak magnetoelectricity stream obtained for comparative example Integral Processing subelement 732 make clipping
It handles, the output result after amplitude limiting processing is determined as target weak magnetoelectricity stream.
Weak magnetic control unit 74 is executed for the target weak magnetoelectricity stream according to acquired in target weak magnetoelectricity stream acquiring unit 73
The weak magnetic of motor driven systems controls.
Each unit in the embodiment control device runs corresponding software program, according to the method realization pair of Fig. 2 embodiment
The weak magnetic of no electrolytic capacitor motor driven systems controls.
The weak magnetic control device of above-described embodiment can be applied in no electrolytic capacitor motor driven systems, meet to no electricity
Solve the motor speed demand for control of capacitor motor drive system.And the electroless electricity of the weak magnetic control device with above-described embodiment
Holding motor driven systems can be used as cooler compressor drive system, real with low cost, the driven compressor system of small size
The converting operation control of existing air conditioner.
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 field weakening control method of no electrolytic capacitor motor driven systems, which is characterized in that the described method includes:
The current DC bus-bar voltage in motor driven systems is obtained in real time；
It is obtained and the current DC bus according to the corresponding relationship of known DC bus-bar voltage and the integral coefficient of processor
The corresponding integral coefficient of voltage, as current integration coefficient；The DC bus-bar voltage is corresponding with the integral coefficient of processor
Relationship meet the DC bus-bar voltage amplitude and the integral coefficient correlation；
Target weak magnetoelectricity stream is obtained according to the current DC bus-bar voltage, current goal voltage and the current integration coefficient；
The current goal voltage is determined according to current goal motor speed；
It is controlled according to the weak magnetic of the target weak magnetoelectricity stream actuating motor drive system；
It is described that target weak magnetic electricity is obtained according to the current DC bus-bar voltage, current goal voltage and the current integration coefficient
Stream, specifically includes:
The difference of the current DC bus-bar voltage and current goal voltage is obtained, the corresponding place of the current integration coefficient is based on
It manages device and proportional integration processing is carried out to the difference, obtain the target weak magnetoelectricity stream；Integral in the proportional integration processing
Coefficient is the current integration coefficient, and the proportionality coefficient in the proportional integration processing is fixed coefficient.
2. the method according to claim 1, wherein described obtain the current DC bus-bar voltage and current mesh
The difference for marking voltage carries out proportional integration processing to the difference based on the corresponding processor of the current integration coefficient, obtains
The target weak magnetoelectricity stream, specifically further include:
The difference of the current DC bus-bar voltage and current goal voltage is obtained, the corresponding place of the current integration coefficient is based on
It manages device and proportional integration processing is carried out to the difference, obtain basic weak magnetoelectricity stream, amplitude limiting processing is made to the basic weak magnetoelectricity stream,
Output result after amplitude limiting processing is determined as the target weak magnetoelectricity stream.
3. according to the method described in claim 2, it is characterized in that, described make amplitude limiting processing to the basic weak magnetoelectricity stream, limit
Width treated output result be determined as the target weak magnetoelectricity stream, specifically include:
The basic weak magnetoelectricity stream is made comparisons with setting clipping weak magnetoelectricity stream, if the basic weak magnetoelectricity stream is set not less than described
The setting clipping weak magnetoelectricity stream is determined as the target weak magnetoelectricity stream by fixed limit width weak magnetoelectricity stream；If the basic weak magnetic electricity
Stream is less than the setting clipping weak magnetoelectricity stream, and the basic weak magnetoelectricity stream is determined as the target weak magnetoelectricity stream.
4. according to the method in any one of claims 1 to 3, which is characterized in that the known DC bus-bar voltage with
The corresponding relationship of the integral coefficient of processor is obtained using following manner:
The a cycle of DC bus-bar voltage is divided into continuous multiple subcycles, each subcycle is corresponding with an integration system
It counts, the one-to-one corresponding relationship of integral coefficient of all subcycles and processor in DC bus-bar voltage a cycle is formed
The corresponding relationship of the integral coefficient of the DC bus-bar voltage and processor, and DC bus-bar voltage width in each subcycle
The mean value of value and one-to-one integral coefficient correlation；
It is obtained and the current DC bus according to the corresponding relationship of known DC bus-bar voltage and the integral coefficient of processor
The corresponding integral coefficient of voltage is specifically included as current integration coefficient:
The subcycle in the affiliated DC bus-bar voltage a cycle of the current DC bus-bar voltage is judged, as described current straight
Flow current subcycle corresponding to busbar voltage；
Integral coefficient according to all subcycles and processor in the DC bus-bar voltage a cycle is right correspondingly
The corresponding integral coefficient of current subcycle described in Relation acquisition is answered, as the current integration coefficient.
5. a kind of weak magnetic control device of no electrolytic capacitor motor driven systems, which is characterized in that described device includes:
DC bus-bar voltage acquiring unit, for obtaining the current DC bus-bar voltage in motor driven systems in real time；
Integral coefficient acquiring unit, for being obtained according to the corresponding relationship of known DC bus-bar voltage and the integral coefficient of processor
Integral coefficient corresponding with the current DC bus-bar voltage is taken, as current integration coefficient；The DC bus-bar voltage and place
Manage device integral coefficient corresponding relationship meet the DC bus-bar voltage amplitude and the integral coefficient correlation；
Target weak magnetoelectricity stream acquiring unit, for according to the current DC bus-bar voltage, current goal voltage and described current
Integral coefficient obtains target weak magnetoelectricity stream；The current goal voltage is determined according to current goal motor speed；
Weak magnetic control unit, for being controlled according to the weak magnetic of the target weak magnetoelectricity stream actuating motor drive system；
The target weak magnetoelectricity stream acquiring unit specifically includes:
Difference obtains subelement, for obtaining the difference of the current DC bus-bar voltage Yu the current goal voltage；
Proportional integration handles subelement, for carrying out proportional integration processing to the difference, obtains the target weak magnetoelectricity stream；Institute
Stating the integral coefficient in proportional integration processing is the current integration coefficient, and the proportionality coefficient in the proportional integration processing is solid
Determine coefficient.
6. device according to claim 5, which is characterized in that the proportional integration processing subelement carries out the difference
Proportional integration processing, obtains basic weak magnetoelectricity stream；The target weak magnetoelectricity stream acquiring unit further include:
Amplitude limiting processing subelement, for making amplitude limiting processing to the basic weak magnetoelectricity stream, the output result after amplitude limiting processing is determined
For the target weak magnetoelectricity stream.
7. device according to claim 6, which is characterized in that the amplitude limiting processing subelement is to the basic weak magnetoelectricity stream
Make amplitude limiting processing, the output result after amplitude limiting processing is determined as the target weak magnetoelectricity stream, it specifically includes:
The basic weak magnetoelectricity stream is made comparisons with setting clipping weak magnetoelectricity stream, if the basic weak magnetoelectricity stream is set not less than described
The setting clipping weak magnetoelectricity stream is determined as the target weak magnetoelectricity stream by fixed limit width weak magnetoelectricity stream；If the basic weak magnetic electricity
Stream is less than the setting clipping weak magnetoelectricity stream, and the basic weak magnetoelectricity stream is determined as the target weak magnetoelectricity stream.
8. device according to any one of claims 5 to 7, which is characterized in that the known DC bus-bar voltage with
The corresponding relationship of the integral coefficient of processor is obtained using following manner:
The a cycle of DC bus-bar voltage is divided into continuous multiple subcycles, each subcycle is corresponding with an integration system
It counts, the one-to-one corresponding relationship of integral coefficient of all subcycles and processor in DC bus-bar voltage a cycle is formed
The corresponding relationship of the integral coefficient of the DC bus-bar voltage and processor, and DC bus-bar voltage width in each subcycle
The mean value of value and one-to-one integral coefficient correlation；
The integral coefficient acquiring unit is obtained according to the corresponding relationship of known DC bus-bar voltage and the integral coefficient of processor
Integral coefficient corresponding with the current DC bus-bar voltage is taken to specifically include as current integration coefficient:
The subcycle in the affiliated DC bus-bar voltage a cycle of the current DC bus-bar voltage is judged, as described current straight
Flow current subcycle corresponding to busbar voltage；
Integral coefficient according to all subcycles and processor in the DC bus-bar voltage a cycle is right correspondingly
The corresponding integral coefficient of current subcycle described in Relation acquisition is answered, as the current integration coefficient.
9. a kind of no electrolytic capacitor motor driven systems, which is characterized in that include any one of the claims 5 to 8 institute
The weak magnetic control device for the no electrolytic capacitor motor driven systems stated.
10. a kind of air conditioner includes driven compressor system, which is characterized in that the driven compressor system is using above-mentioned
No electrolytic capacitor motor driven systems as claimed in claim 9.
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| CN201610899820.8A CN106655953B (en) | 2016-10-15 | 2016-10-15 | No electrolytic capacitor motor driven systems and its field weakening control method and control device |
| PCT/CN2016/110899 WO2018068390A1 (en) | 2016-10-15 | 2016-12-20 | Electric motor driving system with no electrolytic capacitor, and field weakening control method and control apparatus thereof |
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| CN201610899820.8A CN106655953B (en) | 2016-10-15 | 2016-10-15 | No electrolytic capacitor motor driven systems and its field weakening control method and control device |
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| CN112564563B (en) * | 2019-09-25 | 2022-04-19 | 杭州先途电子有限公司 | Control method, control device and controller |
| CN112787495B (en) * | 2019-11-07 | 2021-12-31 | 广东美芝制冷设备有限公司 | Variable frequency controller and control method thereof, variable frequency electric appliance and electronic equipment |
| CN110904615B (en) * | 2019-12-02 | 2022-04-05 | 江苏新安电器股份有限公司 | Brushless direct current motor control method and system for washing machine |
| CN114244225B (en) * | 2021-12-03 | 2024-04-12 | 淮安威灵电机制造有限公司 | Weak magnetic control method and device for motor, motor controller and motor control system |
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| CN204156773U (en) * | 2014-11-15 | 2015-02-11 | 华北科技学院 | A kind of FET three phase alternating current motor driving control system |
| CN105207544A (en) * | 2015-05-25 | 2015-12-30 | 深圳市振邦智能科技有限公司 | Flux-weakening control method and flux-weakening control device |
| CN105610368A (en) * | 2016-01-14 | 2016-05-25 | 广东美芝制冷设备有限公司 | Weak magnetic control method and device of compressor and compressor control system |
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| JP3969165B2 (en) * | 2002-04-16 | 2007-09-05 | トヨタ自動車株式会社 | Voltage conversion apparatus, voltage conversion method, and computer-readable recording medium recording a program for causing a computer to execute control of voltage conversion |
| JPWO2005071827A1 (en) * | 2004-01-27 | 2007-09-06 | ローム株式会社 | Motor drive control circuit and motor device using the same |
| CN104333273B (en) * | 2014-09-28 | 2017-02-01 | 四川长虹电器股份有限公司 | Flux-weakening control method for variable frequency controller of permanent magnet synchronous motor |
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|---|---|---|---|---|
| CN204156773U (en) * | 2014-11-15 | 2015-02-11 | 华北科技学院 | A kind of FET three phase alternating current motor driving control system |
| CN105207544A (en) * | 2015-05-25 | 2015-12-30 | 深圳市振邦智能科技有限公司 | Flux-weakening control method and flux-weakening control device |
| CN105610368A (en) * | 2016-01-14 | 2016-05-25 | 广东美芝制冷设备有限公司 | Weak magnetic control method and device of compressor and compressor control system |
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| CN106655953A (en) | 2017-05-10 |
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