CN106330045A - Permanent magnet synchronous motor control system and control method of permanent magnet synchronous motor - Google Patents
Permanent magnet synchronous motor control system and control method of permanent magnet synchronous motor Download PDFInfo
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- CN106330045A CN106330045A CN201610941906.2A CN201610941906A CN106330045A CN 106330045 A CN106330045 A CN 106330045A CN 201610941906 A CN201610941906 A CN 201610941906A CN 106330045 A CN106330045 A CN 106330045A
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Classifications
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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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/085—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 wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/12—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation pulsing by guiding the flux vector, current vector or voltage vector on a circle or a closed curve, e.g. for direct torque control
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Abstract
The invention discloses a permanent magnet synchronous motor control system and a permanent magnet synchronous motor control method, wherein the method comprises the following steps: detecting the rotating speed of the permanent magnet synchronous motor in real time; judging a rotating speed interval in which the current rotating speed of the permanent magnet synchronous motor is positioned; acquiring corresponding switching frequency according to a rotating speed interval where the current rotating speed of the permanent magnet synchronous motor is located, and acquiring a corresponding motor vector control mode according to the rotating speed interval where the current rotating speed of the permanent magnet synchronous motor is located, wherein each rotating speed interval corresponds to one switching frequency, and each rotating speed interval corresponds to one motor vector control mode; and controlling the frequency converter of the permanent magnet synchronous motor according to the acquired switching frequency and the acquired motor vector control mode. The method adopts a sectional operation strategy of switching frequency, and effectively realizes higher efficiency, safety and reliability operation of the permanent magnet synchronous motor and the controller in a full speed range.
Description
Technical field
The present invention relates to technical field of motors, particularly to control method and a kind of permanent magnetism of a kind of permagnetic synchronous motor
Synchronous motor control system.
Background technology
At present, traditional method for controlling permanent magnet synchronous motor is at the permanent torque district of permagnetic synchronous motor and constant power flux weakening
District uses identical switching frequency, although using identical switching frequency algorithm relatively easy, but it cannot be guaranteed that motor and control
Device reliability service in full speed range and higher work efficiency.
Wherein, if switching frequency choosing relatively low, although can guarantee that motor and the efficiency of controller in permanent torque district, but permanent
Power weak magnetic area can cause current distortion due to the decline of carrier frequency ratio, thus causes the overcurrent protection of controller device even to cause electricity
Machine out of control；And if switching frequency choosing is higher, although can guarantee that the reliability service of constant power flux weakening district motor, but can cause
In permanent torque district, the efficiency of motor and controller declines.
Accordingly, it would be desirable to current motor control strategy is improved.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in above-mentioned technology.
To this end, it is an object of the present invention to propose the control method of a kind of permagnetic synchronous motor, the process employs
The partition running strategy of switching frequency, have effectively achieved permagnetic synchronous motor and the controller greater efficiency in full speed range
And safe and reliable operation.
Further object is that a kind of control system for permanent-magnet synchronous motor of proposition.
For achieving the above object, the control method of a kind of permagnetic synchronous motor that one aspect of the present invention embodiment proposes, bag
Include following steps: detect the rotating speed of described permagnetic synchronous motor in real time；Judge residing for the current rotating speed of described permagnetic synchronous motor
Rotating speed interval；Corresponding switching frequency is obtained according to the rotating speed interval residing for the current rotating speed of described permagnetic synchronous motor, and
According to the corresponding motor vector control mode of rotating speed interval acquisition residing for the current rotating speed of described permagnetic synchronous motor, wherein,
The corresponding switching frequency in each rotating speed interval, and each rotating speed interval correspondence one motor vector control mode；According to acquisition
Switching frequency and the motor vector control mode of acquisition the converter of described permagnetic synchronous motor is controlled.
The control method of permagnetic synchronous motor according to embodiments of the present invention, first passes through and detects permagnetic synchronous motor in real time
Rotating speed, and judge that the rotating speed residing for current rotating speed of permagnetic synchronous motor is interval, then current according to permagnetic synchronous motor
Rotating speed interval residing for rotating speed obtains corresponding switching frequency, simultaneously always according to residing for the current rotating speed of permagnetic synchronous motor
Rotating speed interval obtains corresponding motor vector control mode, finally according to the switching frequency obtained and the motor vector controlled of acquisition
The converter of permagnetic synchronous motor is controlled by mode, thus by using switching frequency partition running and different rotating speeds district
Between use different motor vector control modes, it is possible to have effectively achieved permagnetic synchronous motor and controller in full speed range
Greater efficiency, it is ensured that motor safety reliability service.
According to one embodiment of present invention, the rotating speed of described switching frequency and described permagnetic synchronous motor is proportionate pass
System.
According to one embodiment of present invention, described rotating speed interval includes low regime, middling speed district and high velocity, wherein, when
When the current rotating speed of described permagnetic synchronous motor is in described low regime and middling speed district, the switching frequency of acquisition is less than first frequency
Threshold value；When the current rotating speed of described permagnetic synchronous motor is in described high velocity, the switching frequency of acquisition is more than described first
Frequency threshold.
According to one embodiment of present invention, described first frequency threshold value can be 10KHz.
According to one embodiment of present invention, when the current rotating speed of described permagnetic synchronous motor be in described low regime and in
During speed district, the motor vector control mode of acquisition is continuous space Vector Pulse Width Modulation mode；When described permagnetic synchronous motor
When current rotating speed is in described high velocity, the motor vector control mode of acquisition is interrupted space vector pulse width modulation mode.
For achieving the above object, a kind of control system for permanent-magnet synchronous motor that another aspect of the present invention embodiment proposes, bag
Include: Rotating speed measring module, for the rotating speed of the described permagnetic synchronous motor of detection in real time；Converter；Judge module, is used for judging institute
The rotating speed residing for current rotating speed stating permagnetic synchronous motor is interval；Acquisition module, for working as according to described permagnetic synchronous motor
Rotating speed interval residing for front rotating speed obtains corresponding switching frequency, and according to residing for the current rotating speed of described permagnetic synchronous motor
Rotating speed interval obtains corresponding motor vector control mode, wherein, the corresponding switching frequency in each rotating speed interval, and each turn
The interval corresponding a kind of motor vector control mode of speed；Control module, vows for the motor according to the switching frequency obtained and acquisition
Described converter is controlled by amount control mode.
Control system for permanent-magnet synchronous motor according to embodiments of the present invention, detects permanent magnetism in real time by Rotating speed measring module same
The rotating speed of step motor, and judge that the rotating speed residing for current rotating speed of permagnetic synchronous motor is interval by judge module, and obtain
Module obtains corresponding switching frequency according to the rotating speed interval residing for the current rotating speed of permagnetic synchronous motor, simultaneously same according to permanent magnetism
The rotating speed interval residing for current rotating speed of step motor obtains corresponding motor vector control mode, and such control module is according to acquisition
Switching frequency and the motor vector control mode of acquisition the converter of permagnetic synchronous motor is controlled such that it is able to
Different rotating speed intervals uses different switching frequencies and different motor vector control modes to be controlled converter, holds concurrently
Turn round and look at permagnetic synchronous motor and the controller efficiency in full speed range, it is ensured that permagnetic synchronous motor and controller are at full speed range
The efficiency that interior holding is higher, it is ensured that motor safety reliability service.
According to one embodiment of present invention, the rotating speed of described switching frequency and described permagnetic synchronous motor is proportionate pass
System.
According to one embodiment of present invention, described rotating speed interval includes low regime, middling speed district and high velocity, wherein, when
When the current rotating speed of described permagnetic synchronous motor is in described low regime and middling speed district, the switching frequency that described acquisition module obtains
Less than first frequency threshold value；When the current rotating speed of described permagnetic synchronous motor is in described high velocity, described acquisition module obtains
The switching frequency taken is more than described first frequency threshold value.
According to one embodiment of present invention, described first frequency threshold value can be 10KHz.
According to one embodiment of present invention, when the current rotating speed of described permagnetic synchronous motor be in described low regime and in
During speed district, the motor vector control mode that described acquisition module obtains is continuous space Vector Pulse Width Modulation mode；When described forever
When the current rotating speed of magnetic-synchro motor is in described high velocity, the motor vector control mode that described acquisition module obtains is interrupted
Space vector pulse width modulation mode.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of permagnetic synchronous motor according to embodiments of the present invention；And
Fig. 2 is the block diagram of control system for permanent-magnet synchronous motor according to embodiments of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
The control method and forever of the permagnetic synchronous motor proposed according to embodiments of the present invention is described with reference to the accompanying drawings
Magnetic-synchro electric machine control system.
Fig. 1 is the flow chart of the control method of permagnetic synchronous motor according to embodiments of the present invention.As it is shown in figure 1, this is forever
The control method of magnetic-synchro motor comprises the following steps:
S1, detects the rotating speed of permagnetic synchronous motor in real time.
Wherein it is possible to detected the rotating speed of permagnetic synchronous motor by position detection device.
S2, it is judged that the rotating speed residing for current rotating speed of permagnetic synchronous motor is interval.
Specifically, according to one embodiment of present invention, the rotating speed of permagnetic synchronous motor can be divided into low regime, in
Speed district and high velocity.Wherein, motor speed corresponding to low regime can be 0-3600r/min, the motor speed that middling speed district is corresponding
Can be 3600-7000r/min, motor speed corresponding to high velocity can be 7000-9500r/min.
S3, according to the corresponding switching frequency of rotating speed interval acquisition residing for the current rotating speed of permagnetic synchronous motor, and according to
The rotating speed interval residing for current rotating speed of permagnetic synchronous motor obtains corresponding motor vector control mode, wherein, each rotating speed
An interval corresponding switching frequency, and each rotating speed interval correspondence one motor vector control mode.
According to one embodiment of present invention, switching frequency and the rotating speed correlation of permagnetic synchronous motor.I.e. say,
Along with the rising of permagnetic synchronous motor rotating speed, the switching frequency of converter is also with rising.
Specifically, according to one embodiment of present invention, rotating speed interval can include low regime, middling speed district and high velocity.Its
In, when the current rotating speed of permagnetic synchronous motor is in low regime and middling speed district for instance in 0-7000r/min, the switch of acquisition
Frequency is less than first frequency threshold value；When the current rotating speed of permagnetic synchronous motor is in high velocity for instance in 7000-9500r/
Min, the switching frequency of acquisition is more than first frequency threshold value.Wherein, first frequency threshold value can be demarcated according to practical situation,
Such as, first frequency threshold value can be 10KHz.
According to one embodiment of present invention, when the current rotating speed of permagnetic synchronous motor is in low regime and middling speed district,
The motor vector control mode obtained is CSVPWM (Continuous Space Vector Pulse Width
Modulation, continuous space Vector Pulse Width Modulation) mode；When the current rotating speed of permagnetic synchronous motor is in high velocity, obtain
The motor vector control mode taken is DSVPWM (Discontinuous Space Vector Pulse Width
Modulation, interrupted space vector pulse width modulation) mode.
S4, enters the converter of permagnetic synchronous motor according to the motor vector control mode of the switching frequency obtained and acquisition
Row controls.
Therefore, the control method of the permagnetic synchronous motor of the embodiment of the present invention, by using not in different rotating speed intervals
Converter is controlled by same switching frequency and different motor vector control modes, thus has taken into account motor and controller
Efficiency in full speed range, it is ensured that motor safety reliability service.
Specifically, in an embodiment of the present invention, use the control strategy of switching frequency partition running that converter is carried out
During control, along with the continuous rising of motor speed, switching frequency is also with becoming big.In order to ensure permagnetic synchronous motor and controller
Carrier frequency in full speed range is than keeping constant, and each rotating speed can corresponding only one switching frequency.But in order to reduce control
The operand unnecessary for CPU of device, can be divided into 3 sections according to the rotating speed interval difference of motor by switching frequency, table 1 institute specific as follows
Show.
Table 1
As can be seen from Table 1, along with the change of permagnetic synchronous motor rotating speed, carrier frequency ratio changes the most therewith.At each rotating speed
In interval, all can keep higher carrier frequency ratio, and provide possibility for synthesis sine.
Such as, during motor electricity frequency 0-240Hz of permagnetic synchronous motor, the rotating speed interval of permagnetic synchronous motor is low speed
District, for 0-3600r/min；During motor electricity frequency 240-467Hz of permagnetic synchronous motor, the rotating speed interval of permagnetic synchronous motor is
Middling speed district, for 3600-7000r/min；During motor electricity frequency 467-634Hz of permagnetic synchronous motor, turning of permagnetic synchronous motor
Speed interval is high velocity, for 7000-9500r/min.Wherein, base speed can be 3600r/min, and maximum speed is 9500r/min.
According to one embodiment of present invention, when the current rotating speed of permagnetic synchronous motor is in low regime and middling speed district,
The switching frequency obtained is less than first frequency threshold value (such as 10KHz), and the motor vector control mode obtained is CSVPWM mode,
Therefore controller it has been greatly improved in low regime and the efficiency in middling speed district；When the current rotating speed of permagnetic synchronous motor is at a high speed
Qu Shi, the switching frequency of acquisition is more than first frequency threshold value (such as 10KHz), and the motor vector control mode obtained is DSVPWM
Mode, therefore greatly reduces the switching loss of converter.Wherein, CSVPWM mode is compared with DSVPWM mode, DSVPWM side
The harmonic content of formula is relatively big, but owing to permagnetic synchronous motor operates in high velocity, is operated in degree of depth weak magnetic area, the torque of motor
Constantly reducing along with the rising of rotating speed, therefore, when working in high velocity, will not cause because have employed DSVPWM mode
Electric efficiency declines, thus ensures that permagnetic synchronous motor and controller keep higher efficiency and safe and reliable in full speed range
Run.
Specifically, in an example of the present invention, the efficiency of permagnetic synchronous motor and controller is verified.Its
In, selection rated power is 60KW, and peak power is 120KW, and motor number of pole-pairs is 4 poles, and rotation pole-changing logarithm is 4 poles, and base speed is
3600r/min, as a example by maximum speed is the permagnetic synchronous motor of 9500r/min, it is assumed that the switching frequency of converter is 10KHz,
The control method applying traditional control method and the present invention has carried out experiment and has compared.Traditional control method is applied to obtain permanent magnetism
Synchronous motor and the efficiency of controller and malfunction, as shown in table 2 below.
Table 2
The control method of the application present invention obtains permagnetic synchronous motor and the efficiency of controller and malfunction, such as table 3 below
Shown in.
Table 3
Contrast table 2 and table 3 measured data can obtain, and the control method of the present invention has used block switch frequency and DSVPWM control
After mode processed, the efficiency of controller is higher than traditional control method, and the control method of the present invention can ensure that permanent magnet synchronous electric
Machine is safe and reliable operation in full speed range.
In sum, the control method of permagnetic synchronous motor according to embodiments of the present invention, first pass through detection in real time forever
The rotating speed of magnetic-synchro motor, and judge that the rotating speed residing for current rotating speed of permagnetic synchronous motor is interval, then according to permanent-magnet synchronous
The rotating speed interval residing for current rotating speed of motor obtains corresponding switching frequency, simultaneously current always according to permagnetic synchronous motor
Rotating speed interval residing for rotating speed obtains corresponding motor vector control mode, finally according to the switching frequency obtained and the electricity of acquisition
The converter of permagnetic synchronous motor is controlled by machine vector control mode, thus by use switching frequency partition running and
Different rotating speeds interval uses different motor vector control modes, it is possible to have effectively achieved permagnetic synchronous motor and controller exists
Greater efficiency in full speed range, it is ensured that motor safety reliability service.
Fig. 2 is the block diagram of control system for permanent-magnet synchronous motor according to embodiments of the present invention.As in figure 2 it is shown, should
Control system for permanent-magnet synchronous motor includes: Rotating speed measring module 10, converter 20, judge module 30, acquisition module 40 and control
Module 50.
Wherein, Rotating speed measring module 10 for the rotating speed of detection permagnetic synchronous motor in real time, such as, can use position detection
Device detects the rotating speed of permagnetic synchronous motor.Judge module 30 is for judging the rotating speed residing for current rotating speed of permagnetic synchronous motor
Interval.Acquisition module 40 is for obtaining corresponding switch lock according to the rotating speed interval residing for the current rotating speed of permagnetic synchronous motor
Rate, and according to the corresponding motor vector control mode of rotating speed interval acquisition residing for the current rotating speed of permagnetic synchronous motor, wherein,
The corresponding switching frequency in each rotating speed interval, and each rotating speed interval correspondence one motor vector control mode.Control module
50 for being controlled converter 20 according to the motor vector control mode of the switching frequency obtained and acquisition.
According to one embodiment of present invention, switching frequency and the rotating speed correlation of permagnetic synchronous motor.I.e. say,
Along with the rising of permagnetic synchronous motor rotating speed, the switching frequency of converter 20 is also with rising.
Specifically, rotating speed interval can include low regime, middling speed district and high velocity, wherein, and current when permagnetic synchronous motor
When rotating speed is in low regime and middling speed district, the switching frequency that acquisition module 40 obtains is less than first frequency threshold value；Work as permanent-magnet synchronous
When the current rotating speed of motor is in high velocity, the switching frequency that acquisition module 40 obtains is more than first frequency threshold value.Wherein, first
Frequency threshold can be demarcated according to practical situation, and such as, first frequency threshold value can be 10KHz.
In one embodiment of the invention, the rotating speed interval of permagnetic synchronous motor includes low regime, middling speed district and high speed
Qu Shi, motor electricity frequency 0-240Hz of permagnetic synchronous motor, the rotating speed interval of permagnetic synchronous motor is low regime, for 0-
3600r/min, corresponding switching frequency is 4KHz；During motor electricity frequency 240-467Hz of permagnetic synchronous motor, permanent magnet synchronous electric
The rotating speed interval of machine is middling speed district, and for 3600-7000r/min, corresponding switching frequency is 9KHz；The motor of permagnetic synchronous motor
During electricity frequency 467-634Hz, the rotating speed interval of permagnetic synchronous motor is high velocity, for 7000-9500r/min, corresponding switch
Frequency is 13KHz.It follows that when the current rotating speed of permagnetic synchronous motor is in low regime and middling speed district, acquisition module 40
The switching frequency obtained is less than first frequency threshold value (such as 10KHz)；When the current rotating speed of permagnetic synchronous motor is in high velocity,
The switching frequency that acquisition module 40 obtains is more than first frequency threshold value (such as 10KHz).
According to one embodiment of present invention, when the current rotating speed of permagnetic synchronous motor is in low regime and middling speed district,
The motor vector control mode that acquisition module 40 obtains is CSVPWM mode；When the current rotating speed of permagnetic synchronous motor is at a high speed
Qu Shi, the motor vector control mode that acquisition module 40 obtains is DSVPWM mode.
Specifically, when the current rotating speed of permagnetic synchronous motor is in low regime and middling speed district, acquisition module 40 obtains
Switching frequency is less than first frequency threshold value (such as 10KHz), and the motor vector control mode obtained by acquisition module 40 is
CSVPWM mode, therefore substantially increases controller in low regime and the efficiency in middling speed district；Forward is worked as when permagnetic synchronous motor
When speed is in high velocity, the switching frequency that acquisition module 40 obtains is more than first frequency threshold value (such as 10KHz), and by obtaining mould
The motor vector control mode that block 40 obtains is DSVPWM mode, therefore greatly reduces the switching loss of converter 20.
CSVPWM mode is compared with DSVPWM mode, and the harmonic content of DSVPWM mode is relatively big, but owing to permagnetic synchronous motor runs
In high velocity, being operated in degree of depth weak magnetic area, the torque of motor constantly can reduce, therefore, in high velocity along with the rising of rotating speed
During work, electric efficiency will be caused to decline because have employed DSVPWM mode, thus ensure permagnetic synchronous motor and control
Device keeps higher efficiency and safe and reliable operation in full speed range.
In sum, control system for permanent-magnet synchronous motor according to embodiments of the present invention, real-time by Rotating speed measring module
The rotating speed of detection permagnetic synchronous motor, and the rotating speed district residing for current rotating speed of permagnetic synchronous motor is judged by judge module
Between, and acquisition module is according to the corresponding switching frequency of rotating speed interval acquisition residing for the current rotating speed of permagnetic synchronous motor, same
Time according to residing for the current rotating speed of permagnetic synchronous motor rotating speed interval obtain corresponding motor vector control mode, so control
The converter of permagnetic synchronous motor is controlled by module according to the motor vector control mode of the switching frequency obtained and acquisition
System such that it is able to use different switching frequencies and different motor vector control modes to come frequency conversion in different rotating speed intervals
Device is controlled, and has taken into account permagnetic synchronous motor and the controller efficiency in full speed range, it is ensured that permagnetic synchronous motor and control
Device processed keeps higher efficiency in full speed range, it is ensured that motor safety reliability service.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (10)
1. the control method of a permagnetic synchronous motor, it is characterised in that comprise the following steps:
Detect the rotating speed of described permagnetic synchronous motor in real time；
Judge that the rotating speed residing for current rotating speed of described permagnetic synchronous motor is interval；
Corresponding switching frequency is obtained according to the rotating speed interval residing for the current rotating speed of described permagnetic synchronous motor, and according to described
The rotating speed interval residing for current rotating speed of permagnetic synchronous motor obtains corresponding motor vector control mode, wherein, each rotating speed
An interval corresponding switching frequency, and each rotating speed interval correspondence one motor vector control mode；
The converter of described permagnetic synchronous motor is carried out by the motor vector control mode according to the switching frequency obtained and acquisition
Control.
2. the control method of permagnetic synchronous motor as claimed in claim 1, it is characterised in that described switching frequency with described forever
The rotating speed correlation of magnetic-synchro motor.
3. the control method of permagnetic synchronous motor as claimed in claim 1 or 2, it is characterised in that described rotating speed interval includes
Low regime, middling speed district and high velocity, wherein,
When the current rotating speed of described permagnetic synchronous motor is in described low regime and middling speed district, the switching frequency of acquisition is less than the
One frequency threshold；
When the current rotating speed of described permagnetic synchronous motor is in described high velocity, the switching frequency of acquisition is more than described first frequency
Rate threshold value.
4. the control method of permagnetic synchronous motor as claimed in claim 3, it is characterised in that described first frequency threshold value is
10KHz。
5. the control method of permagnetic synchronous motor as claimed in claim 3, it is characterised in that
When the current rotating speed of described permagnetic synchronous motor is in described low regime and middling speed district, the motor vector controlled side of acquisition
Formula is continuous space Vector Pulse Width Modulation mode；
When the current rotating speed of described permagnetic synchronous motor is in described high velocity, the motor vector control mode of acquisition is interrupted
Space vector pulse width modulation mode.
6. a control system for permanent-magnet synchronous motor, it is characterised in that including:
Rotating speed measring module, for the rotating speed of the described permagnetic synchronous motor of detection in real time；
Converter；
Judge module, interval for judging the rotating speed residing for current rotating speed of described permagnetic synchronous motor；
Acquisition module, for obtaining corresponding switch lock according to the rotating speed interval residing for the current rotating speed of described permagnetic synchronous motor
Rate, and obtain corresponding motor vector control mode according to the rotating speed interval residing for the current rotating speed of described permagnetic synchronous motor,
Wherein, the corresponding switching frequency in each rotating speed interval, and each rotating speed interval correspondence one motor vector control mode；
Control module, for controlling described converter according to the motor vector control mode of the switching frequency obtained and acquisition
System.
7. control system for permanent-magnet synchronous motor as claimed in claim 6, it is characterised in that described switching frequency and described permanent magnetism
The rotating speed correlation of synchronous motor.
Control system for permanent-magnet synchronous motor the most as claimed in claims 6 or 7, it is characterised in that described rotating speed interval includes low
Speed district, middling speed district and high velocity, wherein,
When the current rotating speed of described permagnetic synchronous motor is in described low regime and middling speed district, what described acquisition module obtained opens
Close frequency less than first frequency threshold value；
When the current rotating speed of described permagnetic synchronous motor is in described high velocity, the switching frequency that described acquisition module obtains is big
In described first frequency threshold value.
9. control system for permanent-magnet synchronous motor as claimed in claim 8, it is characterised in that described first frequency threshold value is
10KHz。
10. control system for permanent-magnet synchronous motor as claimed in claim 8, it is characterised in that
When the current rotating speed of described permagnetic synchronous motor is in described low regime and middling speed district, the electricity that described acquisition module obtains
Machine vector control mode is continuous space Vector Pulse Width Modulation mode；
When the current rotating speed of described permagnetic synchronous motor is in described high velocity, the motor vector control that described acquisition module obtains
Mode processed is interrupted space vector pulse width modulation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610941906.2A CN106330045A (en) | 2016-10-25 | 2016-10-25 | Permanent magnet synchronous motor control system and control method of permanent magnet synchronous motor |
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| CN106788119A (en) * | 2017-03-14 | 2017-05-31 | 河北工业大学 | A kind of permagnetic synchronous motor frequency converter and its application process |
| CN106972799A (en) * | 2017-04-05 | 2017-07-21 | 西北工业大学 | A kind of magneto control parameter computational methods based on change switching frequency |
| CN107196585A (en) * | 2017-06-11 | 2017-09-22 | 天津恒天新能源汽车研究院有限公司 | A kind of method for suppressing electric automobile synchronous motor controller overheat |
| CN108087234A (en) * | 2018-01-03 | 2018-05-29 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
| CN108933554A (en) * | 2017-05-23 | 2018-12-04 | 郑州宇通客车股份有限公司 | A kind of electric machine controller and electric machine controller become carrier frequency control method |
| CN109150059A (en) * | 2018-09-05 | 2019-01-04 | 北京新能源汽车股份有限公司 | Control method and device for driving motor controller |
| CN111416565A (en) * | 2020-03-27 | 2020-07-14 | 四川长虹精密电子科技有限公司 | Motor control device and method with variable carrier frequency |
| CN113659896A (en) * | 2021-08-05 | 2021-11-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor control method, device, storage medium and motor control system |
| US11614729B2 (en) | 2018-03-09 | 2023-03-28 | Abb Schweiz Ag | Time-spread control cycles for robotic servomotors |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788119A (en) * | 2017-03-14 | 2017-05-31 | 河北工业大学 | A kind of permagnetic synchronous motor frequency converter and its application process |
| CN106972799A (en) * | 2017-04-05 | 2017-07-21 | 西北工业大学 | A kind of magneto control parameter computational methods based on change switching frequency |
| CN108933554A (en) * | 2017-05-23 | 2018-12-04 | 郑州宇通客车股份有限公司 | A kind of electric machine controller and electric machine controller become carrier frequency control method |
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| CN109150059A (en) * | 2018-09-05 | 2019-01-04 | 北京新能源汽车股份有限公司 | Control method and device for driving motor controller |
| CN111416565A (en) * | 2020-03-27 | 2020-07-14 | 四川长虹精密电子科技有限公司 | Motor control device and method with variable carrier frequency |
| CN113659896A (en) * | 2021-08-05 | 2021-11-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor control method, device, storage medium and motor control system |
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