CN107171616B - power conversion control method and device - Google Patents

power conversion control method and device Download PDF

Info

Publication number
CN107171616B
CN107171616B CN201710596765.XA CN201710596765A CN107171616B CN 107171616 B CN107171616 B CN 107171616B CN 201710596765 A CN201710596765 A CN 201710596765A CN 107171616 B CN107171616 B CN 107171616B
Authority
CN
China
Prior art keywords
ref
shaft
value
voltage
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710596765.XA
Other languages
Chinese (zh)
Other versions
CN107171616A (en
Inventor
卓森庆
郑丹露
皮书扬
董宏达
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aux Air Conditioning Co Ltd
Original Assignee
Aux Air Conditioning Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aux Air Conditioning Co Ltd filed Critical Aux Air Conditioning Co Ltd
Priority to CN201710596765.XA priority Critical patent/CN107171616B/en
Publication of CN107171616A publication Critical patent/CN107171616A/en
Application granted granted Critical
Publication of CN107171616B publication Critical patent/CN107171616B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/24—Vector control not involving the use of rotor position or rotor speed sensors
    • H02P21/26—Rotor flux based control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2201/00—Indexing scheme relating to controlling arrangements characterised by the converter used
    • H02P2201/01—AC-AC converter stage controlled to provide a defined AC voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2209/00—Indexing scheme relating to controlling arrangements characterised by the waveform of the supplied voltage or current
    • H02P2209/11—Sinusoidal waveform
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

The embodiment of the present invention proposes a kind of power conversion control method and device, is related to variable-frequency driving technique field.The supply voltage of the power conversion control method and device according to input, busbar voltage, after the phase current and presetting motor speed reference value for being input to motor calculate q shaft voltage instruction value and d shaft voltage instruction value, pulse-width signal is generated according to q shaft voltage instruction value and d shaft voltage instruction value again, so as at alternating voltage peak, it controls motor and exports biggish power, and near alternating voltage zero-crossing point, it controls motor and exports smaller power, so that input current waveform is smaller near alternating voltage zero-crossing point, reduce current harmonics, increase power factor, but also the working efficiency of motor is enhanced.

Description

Power conversion control method and device
Technical field
The present invention relates to variable-frequency driving technique fields, in particular to a kind of power conversion control method and device.
Background technique
Compressor is a kind of driven fluid machinery that low-pressure gas is promoted to high pressure gas, and compressor operating needs The drive of motor.
In the prior art, the power that motor absorbs is firm power, power and alternating voltage at alternating voltage peak Near zero-crossing point power indifference, and near zero-crossing point because alternating voltage is relatively low, therefore zero crossing goes to capital electric current that can compare It greatly, is not sinusoidal waveform so as to cause AC input current, power factor is lower, and harmonic current is bigger, causes compression electromechanical The working efficiency of machine is low.
Summary of the invention
The purpose of the present invention is to provide a kind of power conversion control method and device to improve function to reduce harmonic current Rate factor.
To achieve the goals above, technical solution used in the embodiment of the present invention is as follows:
In a first aspect, the embodiment of the invention provides a kind of power conversion control method, the power conversion control method Include:
Receive supply voltage, the busbar voltage, the phase current for being input to motor of input；
Q shaft voltage instruction value is calculated according to the supply voltage, the phase current and presetting motor speed reference value；
D shaft voltage instruction value is calculated according to the busbar voltage, the phase current；
Pulse-width signal is generated according to the q shaft voltage instruction value and the d shaft voltage instruction value.
Second aspect, the embodiment of the invention also provides a kind of power conversion control device, the power conversion control dress It sets and includes:
Parameter receiving unit, supply voltage for receiving input, busbar voltage, the phase current for being input to motor；
Computing unit, for calculating q according to the supply voltage, the phase current and presetting motor speed reference value Shaft voltage instruction value；
The calculating is also used to calculate d shaft voltage instruction value according to the busbar voltage, the phase current；
Pulse-width signal generation unit, for being generated according to the q shaft voltage instruction value and the d shaft voltage instruction value Pulse-width signal.
Power conversion control method and device provided in an embodiment of the present invention, according to input supply voltage, busbar voltage, The phase current and presetting motor speed reference value for being input to motor calculate q shaft voltage instruction value and the instruction of d shaft voltage After value, then according to q shaft voltage instruction value and d shaft voltage instruction value pulse-width signal is generated, so as at alternating voltage peak, It controls motor and exports biggish power, and near alternating voltage zero-crossing point, control motor exports smaller power, so that defeated It is smaller near alternating voltage zero-crossing point to enter current waveform, reduces current harmonics, increases power factor, but also motor Working efficiency is enhanced.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows the circuit diagram that can apply power conversion control method and device provided in an embodiment of the present invention.
Fig. 2 shows the flow charts of power conversion control method provided by the embodiment of the present invention.
Fig. 3 shows the sub-step flow chart of step S102 in Fig. 2.
Fig. 4 shows the sub-step flow chart of step S1021 in Fig. 3.
Fig. 5 shows the sub-step flow chart of step S103 in Fig. 2.
Fig. 6 shows the functional block diagram of power conversion control device provided in an embodiment of the present invention.
Icon: 100- power conversion control device；110- parameter receiving unit；120- computing unit；130- pulsewidth modulation Signal generation unit.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
First embodiment
The embodiment of the invention provides a kind of power conversion control methods, in control driving circuit to drive motor to operate, To realize the size of the variation control output power of motor according to alternating voltage.Referring to Fig. 1, showing can become using power Change the circuit diagram of control method and device.It is to be appreciated that control module includes power conversion provided by the embodiment of the present invention Control device 100.
Referring to Fig. 2, showing the flow chart of power conversion control method provided by the embodiment of the present invention.The power becomes Change control method the following steps are included:
Step S101: supply voltage, the busbar voltage, the phase current for being input to motor of input are received.
Parameter needed for receiving the calculating q shaft voltage instruction value and d shaft voltage instruction value of input first.Furthermore, it is necessary to Illustrate, in the present embodiment, the phase current for being input to motor includes u phase current iuAnd v phase current iv。
Step S102: the instruction of q shaft voltage is calculated according to supply voltage, phase current and presetting motor speed reference value Value.
Referring to Fig. 3, showing the sub-step flow chart of step S102.Step S102 the following steps are included:
Sub-step S1021: q shaft current ginseng is calculated according to supply voltage, phase current and presetting motor speed reference value Examine value.
Referring to Fig. 4, showing the sub-step flow chart of sub-step S1021.Sub-step S1021 the following steps are included:
Sub-step S10211: power reference is calculated according to supply voltage, phase current and presetting motor speed reference value Value.
Specifically, it before calculating value and power reference, needs first to carry out motor speed actual value and average value and power reference It calculates.
Firstly, calculating motor speed actual value according to phase current, process is as follows:
Pass through u phase current i firstuAnd v phase current ivCalculate w phase current iw:
iw=-iu-iv
Then pass through u phase current iu, v phase current ivAnd w phase current iwIt calculates α shaft current and β shaft current, formula is as follows It is shown:
iα=iu
The then calculation formula of q shaft current are as follows:
iq=iβcosθ-iαsinθ
The calculation formula of d shaft current are as follows:
id=iαcosθ+iβsinθ
Wherein, θ is the angle of rotor permanent magnet flux linkage, can be obtained by traditional position estimation algorithm, is calculated Process is as follows:
It is first depending on d axis component and q axis component that following formula calculate counter electromotive force:
Wherein, the error of estimated angle and actual angle
Then the angle of rotor permanent magnet flux linkage is calculated by following formula:
θ (n)=θ (n-1)+Δ θ
Then, motor speed actual value ωrAre as follows:
Then, according to presetting motor speed reference value and motor speed calculated with actual values mean power reference value Pavr_Ref, calculation formula is as follows:
Pavr_Ref=Kp2*(ωr_Ref-ωr)+Ki2*∫(ωr_Ref-ωr)dt
Wherein, Pavr_RefFor mean power reference value, ωr_RefFor motor speed reference value, ωrFor motor speed reality Value, Kp2For the second presetting proportionality coefficient, Ki2For presetting second integral coefficient.
Then value and power reference can be calculated by following formula:
PRef=Pavr_Ref*uac*uac
Wherein, uacFor supply voltage.
Sub-step S10212: pass through formulaCalculate q shaft current reference value, wherein iq_RefFor q Shaft current reference value, PRefFor value and power reference, Ud is d axis current voltage, and Uq is q axis current voltage, idFor d shaft current.
Sub-step S1022: pass through formula uq=Kp1*(iq_Ref-iq)+Ki1*∫(iq_Ref-iq) dt calculating q shaft voltage instruction Value, wherein uqFor q shaft voltage instruction value, iq_RefFor q shaft current reference value, iqFor q shaft current, Kp1For the first presetting ratio Example coefficient, Ki1For presetting first integral coefficient.
Step S103: d shaft voltage instruction value is calculated according to busbar voltage, phase current.
Referring to Fig. 5, showing the sub-step flow chart of step S103.Step S103 the following steps are included:
Sub-step S1031: d shaft current reference value is calculated according to busbar voltage, phase current.
It specifically, can be by following formula to d shaft current reference value id_refIt is calculated:
Wherein,η is presetting voltage utilization, udcFor busbar voltage, Iq is presetting q axis Given value of current amount, ωrFor motor speed actual value, ψ is the rotor permanent magnet magnetic linkage of motor, and Ld is d axle inductance.
Sub-step S1032: pass through formula ud=Kp3*(id_Ref-id)+Ki3*∫(id_Ref-id) dt calculating d shaft voltage instruction Value, wherein udFor d shaft voltage instruction value, id_RefFor d shaft current reference value, idFor d shaft current, Kp3For presetting third ratio Example coefficient, Ki3For presetting third integral coefficient.
Step S104: pulse-width signal is generated according to q shaft voltage instruction value and d shaft voltage instruction value.
Wherein, the switch conduction or shutdown that pulse-width signal is used to that an inverter module to be driven to include, so that inversion Module exports d shaft voltage instruction value and q shaft voltage instruction value.
Specifically, pulse-width signal includes bridge conducting dutycycle information on the three-phase of motor, and inverter module is according to duty Than information on or off.It is to be appreciated that can be calculated by following formula duty cycle information:
Firstly, calculating the three-phase output pulse width of motor according to d shaft voltage instruction value and q shaft voltage instruction value.
uα=udcosθ-uqsinθ
uβ=udsinθ+uqcosθ
uu=uα
Bridge conducting dutycycle on the three-phase of motor is calculated according to three-phase output pulse width.
It should be noted that if enabling AC power source input power is PAC, the power of capacitive absorption is PC, power of motor is PM, then:
PAC=PC+PM
But since the capacitor of capacitor is smaller, thus its power absorbed can be ignored, then has:
PAC≈PM
Again due to the expression formula of q shaft current reference value are as follows:
Thus power of motor are as follows: PM=Pavr_Ref*uac*uac, AC power source input power is P at this timeavr_Ref*uac*uac。
Have again, the expression formula of AC power source input power are as follows: PAC=uac*iac
Then:
It is to be appreciated that working as Pavr_RefVariation is slow, when can be approximately direct current, according to power conversion provided by the invention Control method controls motor, may make AC input current waveform consistent with alternating voltage waveform, to guarantee to exchange Input harmonic current is small, and power factor is high, solves the shortcoming of traditional scheme.
Second embodiment
A kind of power conversion control device 100 provided in an embodiment of the present invention is controlled for the variation according to alternating voltage The size of output power of motor.It should be noted that power conversion control device 100 provided by the present embodiment, substantially former Reason and the technical effect generated are identical with above-described embodiment, and to briefly describe, the present embodiment part does not refer to place, can refer to Corresponding contents in the embodiment stated.
Referring to Fig. 6, showing the functional block diagram of power conversion control device 100 provided in an embodiment of the present invention. The power conversion control device 100 includes parameter receiving unit 110, computing unit 120 and pulse-width signal generation unit 130。
The supply voltage for receiving input of parameter receiving unit 110, busbar voltage, the phase current for being input to motor.
It is to be appreciated that the phase current for being input to motor includes u phase current iuAnd v phase current iv。
Computing unit 120 is used to calculate q shaft voltage according to supply voltage, phase current and presetting motor speed reference value Instruction value.
Specifically, computing unit 120 calculates q axis according to supply voltage, phase current and presetting motor speed reference value The process of voltage instruction value is as follows:
Firstly, calculating motor speed actual value according to phase current, process is as follows:
Pass through u phase current iuAnd v phase current ivCalculate w phase current iw:
iw=-iu-iv
And pass through u phase current iu, v phase current ivAnd w phase current iwCalculate α shaft current and β shaft current, the following institute of formula Show:
iα=iu
The then calculation formula of q shaft current are as follows:
iq=iβcosθ-iαsinθ
The calculation formula of d shaft current are as follows:
id=iαcosθ+iβsinθ
Wherein, θ is the angle of rotor permanent magnet flux linkage, can be obtained by traditional position estimation algorithm, is calculated Process is as follows:
It is first depending on d axis component and q axis component that following formula calculate counter electromotive force:
Wherein, the error of estimated angle and actual angle
Then the angle of rotor permanent magnet flux linkage is calculated by following formula:
θ (n)=θ (n-1)+Δ θ
Then, motor speed actual value ωrAre as follows:
Secondly, according to presetting motor speed reference value and motor speed calculated with actual values mean power reference value Pavr_Ref, calculation formula is as follows:
Pavr_Ref=Kp2*(ωr_Ref-ωr)+Ki2*∫(ωr_Ref-ωr)dt
Wherein, Pavr_RefFor mean power reference value, ωr_RefFor motor speed reference value, ωrFor motor speed reality Value, Kp2For the second presetting proportionality coefficient, Ki2For presetting second integral coefficient.
Then, pass through formulaCalculate q shaft current reference value, wherein iq_RefFor q shaft current ginseng Examine value, PRefFor value and power reference, Ud is d axis current voltage, and Uq is q axis current voltage, idFor d shaft current.
Finally, passing through formula uq=Kp1*(iq_Ref-iq)+Ki1*∫(iq_Ref-iq) dt calculating q shaft voltage instruction value, wherein uqFor q shaft voltage instruction value, iq_RefFor q shaft current reference value, iqFor q shaft current, Kp1For the first presetting proportionality coefficient, Ki1 For presetting first integral coefficient.
It is to be appreciated that step S102, sub-step S1022, sub-step S1021, son can be executed by computing unit 120 Step S10211 and sub-step S10212.
Computing unit 120 is also used to calculate d shaft current reference value according to busbar voltage, phase current.
Firstly, computing unit 120 calculates d shaft current reference value according to busbar voltage, phase current.
It specifically, can be by following formula to d shaft current reference value id_refIt is calculated:
Wherein,η is presetting voltage utilization, udcFor busbar voltage, Iq is presetting q axis Given value of current amount, ωrFor motor speed actual value, ψ is the rotor permanent magnet magnetic linkage of motor, and Ld is d axle inductance.
Then, pass through formula ud=Kp3*(id_Ref-id)+Ki3*∫(id_Ref-id) dt calculating d shaft voltage instruction value, wherein udFor d shaft voltage instruction value, id_RefFor d shaft current reference value, idFor d shaft current, Kp3For presetting third proportionality coefficient, Ki3 For presetting third integral coefficient.
It is to be appreciated that step S103, sub-step S1031 and sub-step can also be performed by computing unit 120 S1032。
Pulse-width signal generation unit 130 is used to generate pulsewidth tune according to q shaft voltage instruction value and d shaft voltage instruction value Signal processed.
It is to be appreciated that step S104 can be executed by pulse-width signal generation unit 130.
In conclusion power conversion control method and device provided by the invention, supply voltage, bus electricity according to input Press, be input to that the phase current of motor and presetting motor speed reference value calculate q shaft voltage instruction value and d shaft voltage refers to After enabling value, then according to q shaft voltage instruction value and d shaft voltage instruction value generation pulse-width signal, so as in alternating voltage peak Place, control motor export biggish power, and near alternating voltage zero-crossing point, control motor exports smaller power, to make It is smaller near alternating voltage zero-crossing point to obtain input current waveform, reduces current harmonics, increases power factor, but also electric The working efficiency of machine is enhanced.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing It is further defined and explained.

Claims (6)

1. a kind of power conversion control method, which is characterized in that the power conversion control method includes:
Receive supply voltage, the busbar voltage, the phase current for being input to motor of input；
Q shaft voltage instruction value is calculated according to the supply voltage, the phase current and presetting motor speed reference value；
Wherein, described to refer to according to the supply voltage, the phase current and presetting motor speed reference value calculating q shaft voltage The step of enabling value include:
Motor speed actual value is calculated according to the phase current；
Pass through formula Pavr_Ref=Kp2*(ωr_Ref-ωr)+Ki2*∫(ωr_Ref-ωr) dt calculating mean power reference value, wherein Pavr_RefFor mean power reference value, ωr_RefFor motor speed reference value, ωrFor motor speed actual value, Kp2It is presetting Second proportionality coefficient, Ki2For presetting second integral coefficient；
Pass through formula PRef=Pavr_Ref*uac*uacCalculate value and power reference, wherein PRefFor value and power reference, uacFor power supply electricity Pressure；
Pass through formulaCalculate q shaft current reference value, wherein iq_RefFor q shaft current reference value, PRef For value and power reference, Ud is d axis current voltage, and Uq is q axis current voltage, idFor d shaft current；
Pass through formula uq=Kp1*(iq_Ref-iq)+Ki1*∫(iq_Ref-iq) the dt calculating q shaft voltage instruction value, wherein uqFor q Shaft voltage instruction value, iq_RefFor q shaft current reference value, iqFor q shaft current, Kp1For the first presetting proportionality coefficient, Ki1It is pre- The first integral coefficient of setting；
D shaft voltage instruction value is calculated according to the busbar voltage, the phase current；
Pulse-width signal is generated according to the q shaft voltage instruction value and the d shaft voltage instruction value.
2. power conversion control method as described in claim 1, which is characterized in that it is described according to the busbar voltage, it is described Phase current calculate d shaft voltage instruction value the step of include:
D shaft current reference value is calculated according to the busbar voltage, the phase current；
Pass through formula ud=Kp3*(id_Ref-id)+Ki3*∫(id_Ref-id) the dt calculating d shaft voltage instruction value, wherein udFor d Shaft voltage instruction value, id_RefFor d shaft current reference value, idFor d shaft current, Kp3For presetting third proportionality coefficient, Ki3It is pre- The third integral coefficient of setting.
3. power conversion control method as claimed in claim 2, which is characterized in that it is described according to the busbar voltage, it is described Phase current calculate d shaft current reference value the step of include:
Q shaft current and motor speed reference value are calculated according to the phase current；
Pass through formulaCalculate the d shaft current reference value, whereinη is presetting voltage utilization, udcFor busbar voltage, Iq is presetting q shaft current specified rate, ωr For motor speed actual value, ψ is the rotor permanent magnet magnetic linkage of motor, and Ld is d axle inductance, id_refFor d shaft current reference value.
4. a kind of power conversion control device, which is characterized in that the power conversion control device includes:
Parameter receiving unit, supply voltage for receiving input, busbar voltage, the phase current for being input to motor；
Computing unit, for calculating q axis electricity according to the supply voltage, the phase current and presetting motor speed reference value Press instruction value；
Specifically, the computing unit is used to calculate motor speed actual value according to the phase current；
The computing unit is used to pass through formula Pavr_Ref=Kp2*(ωr_Ref-ωr)+Ki2*∫(ωr_Ref-ωr) dt calculating is averagely Value and power reference, wherein Pavr_RefFor mean power reference value, ωr_RefFor motor speed reference value, ωrFor motor speed reality Actual value, Kp2For the second presetting proportionality coefficient, Ki2For presetting second integral coefficient；
The computing unit is used to pass through formula PRef=Pavr_Ref*uac*uacCalculate value and power reference, wherein PRefFor power ginseng Examine value, uacFor supply voltage；
The computing unit is for passing through formulaCalculate the q shaft current reference value, wherein iq_Ref For q shaft current reference value, PRefFor value and power reference, Ud is d axis current voltage, and Uq is q axis current voltage, idFor d shaft current；
The computing unit is used to pass through formula uq=Kp1*(iq_Ref-iq)+Ki1*∫(iq_Ref-iq) dt calculates the q shaft voltage and refer to Enable value, wherein uqFor q shaft voltage instruction value, iq_RefFor q shaft current reference value, iqFor q shaft current, Kp1It is presetting first Proportionality coefficient, Ki1For presetting first integral coefficient；
The computing unit is also used to calculate d shaft voltage instruction value according to the busbar voltage, the phase current；
Pulse-width signal generation unit, for generating pulsewidth according to the q shaft voltage instruction value and the d shaft voltage instruction value Modulated signal.
5. power conversion control device as claimed in claim 4, which is characterized in that the computing unit is used for:
D shaft current reference value is calculated according to the busbar voltage, the phase current；
Pass through formula ud=Kp3*(id_Ref-id)+Ki3*∫(id_Ref-id) the dt calculating d shaft voltage instruction value, wherein udFor d Shaft voltage instruction value, id_RefFor d shaft current reference value, idFor d shaft current, Kp3For presetting third proportionality coefficient, Ki3It is pre- The third integral coefficient of setting.
6. power conversion control device as claimed in claim 5, which is characterized in that the computing unit is used for:
Q shaft current and motor speed reference value are calculated according to the phase current；
Pass through formulaCalculate the d shaft current reference value, whereinη is presetting voltage utilization, udcFor busbar voltage, Iq is presetting q shaft current specified rate, ωr For motor speed actual value, ψ is the rotor permanent magnet magnetic linkage of motor, and Ld is d axle inductance, id_refFor d shaft current reference value.
CN201710596765.XA 2017-07-20 2017-07-20 power conversion control method and device Active CN107171616B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710596765.XA CN107171616B (en) 2017-07-20 2017-07-20 power conversion control method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710596765.XA CN107171616B (en) 2017-07-20 2017-07-20 power conversion control method and device

Publications (2)

Publication Number Publication Date
CN107171616A CN107171616A (en) 2017-09-15
CN107171616B true CN107171616B (en) 2018-12-21

Family

ID=59818111

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710596765.XA Active CN107171616B (en) 2017-07-20 2017-07-20 power conversion control method and device

Country Status (1)

Country Link
CN (1) CN107171616B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107612402B (en) * 2017-09-27 2019-02-19 奥克斯空调股份有限公司 Power conversion circuit resonance suppressing method and device
CN107623474B (en) * 2017-10-24 2019-01-01 奥克斯空调股份有限公司 A kind of power conversion control method and device
CN110677086B (en) * 2019-08-19 2022-02-25 河南嘉晨智能控制股份有限公司 Asynchronous motor operation efficiency optimization method and control system
CN111464103B (en) * 2020-01-15 2022-02-15 华中科技大学 Electrolytic capacitor network-free side current harmonic suppression method and system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192900A (en) * 1990-06-05 1993-03-09 Victor Company Of Japan, Ltd. Method and apparatus for driving a brushless motor using feedback control
EP1276225A2 (en) * 2001-06-29 2003-01-15 Nissan Motor Co., Ltd. Motor control apparatus for reducing higher harmonic current
CN103858332A (en) * 2011-08-18 2014-06-11 日立建机株式会社 Motor control device and work machine using same
CN104170241A (en) * 2012-03-14 2014-11-26 日产自动车株式会社 Device for controlling electric motor and method for controlling electric motor
CN104333273A (en) * 2014-09-28 2015-02-04 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
CN106788115A (en) * 2017-01-24 2017-05-31 南京航空航天大学 Variable frequency drive control system and control method based on no electrolytic capacitor inverter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192900A (en) * 1990-06-05 1993-03-09 Victor Company Of Japan, Ltd. Method and apparatus for driving a brushless motor using feedback control
EP1276225A2 (en) * 2001-06-29 2003-01-15 Nissan Motor Co., Ltd. Motor control apparatus for reducing higher harmonic current
CN103858332A (en) * 2011-08-18 2014-06-11 日立建机株式会社 Motor control device and work machine using same
CN104170241A (en) * 2012-03-14 2014-11-26 日产自动车株式会社 Device for controlling electric motor and method for controlling electric motor
CN104333273A (en) * 2014-09-28 2015-02-04 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
CN106788115A (en) * 2017-01-24 2017-05-31 南京航空航天大学 Variable frequency drive control system and control method based on no electrolytic capacitor inverter

Also Published As

Publication number Publication date
CN107171616A (en) 2017-09-15

Similar Documents

Publication Publication Date Title
CN107171616B (en) power conversion control method and device
CN107147346B (en) power conversion control device
CN107834924B (en) A kind of field weakening control method and device
CN105119536B (en) A kind of motor driver topology and its control method
Subramanian et al. A power factor correction based canonical switching cell converter for VSI fed BLDC motor by using voltage follower technique
Anton et al. Future drives of home appliances: Elimination of the electrolytic DC-link capacitor in electrical drives for home appliances
Enemuoh et al. Modelling, simulation and performance analysis of a variable frequency drive in speed control of induction motor
CN107659236B (en) A kind of power conversion control method and device
CN104506092A (en) Switched reluctance motor current hysteresis control method based on inductance Fourier decomposition
CN107147348B (en) Varying frequency drive method and device
CN102647142A (en) Current vibration suppression control system of high voltage inverter
Singh et al. AC-DC Zeta converter for power quality improvement in direct torque controlled PMSM drive
CN108923720B (en) Electrolytic capacitor-free variable frequency drive control method and system
Jung et al. DC-link voltage stabilization and source THD improvement using d-axis current injection in reduced DC-link capacitor system
CN107947684B (en) A kind of DC bus-bar voltage guard method and device
CN107623474B (en) A kind of power conversion control method and device
Dianov et al. Substitution of the universal motor drives with electrolytic capacitorless PMSM drives in home appliances
CN107359843B (en) Power conversion control system
Sowmya et al. Using artificial intelligence inverter power control which is based on DC link voltage regulation for IPMSM drives with electrolytic capacitor
CN109495004A (en) The discontinuous pulse duration modulation method of Odd Phases three-level current transformer
JP5196269B2 (en) Electric motor control device
CN104124909A (en) Method and device for controlling single-cycle current real-time modulation PMW (pulse-width modulation) and vehicle with device
Abe et al. Input current harmonics reduction control for electrolytic capacitor less inverter based IPMSM drive system
CN107743003B (en) Field weakening control method and device
CN107681952B (en) power conversion control method and device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant