CN110535392A - A kind of permanent magnet synchronous motor parameter identification method based on LM algorithm - Google Patents
A kind of permanent magnet synchronous motor parameter identification method based on LM algorithm Download PDFInfo
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- CN110535392A CN110535392A CN201910846797.XA CN201910846797A CN110535392A CN 110535392 A CN110535392 A CN 110535392A CN 201910846797 A CN201910846797 A CN 201910846797A CN 110535392 A CN110535392 A CN 110535392A
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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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
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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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
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Abstract
The present invention provides a kind of permanent magnet synchronous motor parameter identification methods based on LM algorithm comprising following steps: 1) using inverted M sequence as system incentive signal, acquiring q shaft voltage, q shaft current, d shaft current and the revolving speed of permanent magnet synchronous motor；2) permanent magnet synchronous motor discrete equation is constructed；3) discrete equation group is asked by LM algorithm；4) stator resistance of permanent magnet synchronous motor, the value of ac-dc axis inductance and permanent magnet flux linkage are acquired.The present invention is based on parameter of the LM algorithm to permanent magnet synchronous motor to recognize, it is the new method that a kind of pair of permanent magnet synchronous motor parameter is recognized, it recognizes permanent-magnet synchronous electromagnetic parameter, it is not necessary that the part parameter of electric machine is set as fixed value, without additional measuring instrument is utilized, has the characteristics that at low cost and applicability.
Description
Technical field
The present invention relates to permanent magnet synchronous motor technical fields, in particular to a kind of permanent-magnet synchronous based on LM algorithm
Parameter of electric machine discrimination method.
Background technique
Parameter identification is the important means for obtaining magneto alternator parameter, since motor control is theoretical and control technology
Continuous development and high-precision electric machines control technology an urgent demand, researcher more pays attention to obtain height from real time
The control performance to permanent magnet synchronous motor is improved in terms of the precision parameter of electric machine.If designed controller parameter and controlled electricity
The matching of machine parameter is improper, will have an impact to the control performance of whole system.
By largely retrieving some typical prior arts of discovery, if number of patent application is in 201710538011.9
State's patent of invention proposes a kind of permanent magnet synchronous motor parameter identification system based on improvement least square method, same by permanent magnetism
It walks parameter of electric machine acquisition system and control system and picks out permanent magnetism with based on the Identification of parameter for improving least square method
Real time resistance value, real-time inductance value, the real-time permanent magnet flux linkage value of synchronous motor, the identification system include permanent magnet synchronous motor ginseng
Number acquisition system, control system for permanent-magnet synchronous motor and Identification of parameter, in which: permanent magnet synchronous motor parameter acquisition system
System has voltage collector, current collector, revolving speed collector, they pass through data line and tested permanent magnet synchronous motor phase
Even；The control system for permanent-magnet synchronous motor uses the sine wave vector control system of direct-axis current id=0；The parameter identification
Algorithm is used based on the permanent magnet synchronous motor parameter identification method for improving least square method.Permanent magnet synchronous electric can be improved in the invention
The efficiency of machine parameter identification accelerates identification speed, it can also be ensured that the accuracy of parameter identification.
It is more that the Chinese invention patent that for another example number of patent application is 201910309508.2 proposes a kind of permanent magnet synchronous motor
Parameter automatic identification method inputs the basic of permanent magnet synchronous motor to the motor driver of permanent magnet synchronous motor by host computer
Parameter, then PC control motor driver operates under open loop control mode, while permanent magnet synchronous motor is in unloaded shape
Under condition, PC control motor driver is successively to the axis inductor of permanent magnet synchronous motor, d-axis inductance, motor zero, stator
Resistance, motor magnetic linkage are repeatedly recognized, and the overall relative deviation for obtaining parameters makees poor, the overall relative deviation of finally judgement
Whether satisfaction restrains, if convergence, automatic identification is completed；The invention overcome low efficiency present in the method for being commonly designed,
The features such as the problem of poor universality, possesses and does not need using additional auxiliary tool, and operation is succinct, identification precision is high.
The Chinese invention patent that for another example number of patent application is 201810170911.7 discloses a kind of permanent magnet synchronous motor ginseng
Number recognition methods, device and controller, wherein the permanent magnet synchronous motor parameter identification method includes: to obtain tested motor work
Make in the first parameter when predetermined current；According to first parameter, the second parameter of the tested motor is determined；According to described
First parameter and second parameter calculate axis inductor, rotor permanent magnet magnetic linkage and d-axis inductance.The invention can be according to need
The permanent magnet synchronous motor parameter under each operating condition needed for obtaining is sought, and it realizes that simply test result is accurate.
It can be seen that as it can be seen that how to be recognized to the parameter of permanent magnet synchronous motor, the urgently processing in practical application
Practical problem there are also much do not propose specific solution
Summary of the invention
A kind of permanent magnet synchronous motor parameter identification method based on LM algorithm is provided for overcome the deficiencies in the prior art,
The specific technical solution of the present invention is as follows:
A kind of permanent magnet synchronous motor parameter identification method based on LM algorithm, comprising the following steps:
Step 1, using inverted M sequence as system incentive signal, the q shaft voltage u of permanent magnet synchronous motor is acquiredq, q shaft current
iq, d shaft current idAnd rotational speed omega；
Step 2, permanent magnet synchronous motor discrete equation is constructed, detailed process is as follows:
2A establishes permanent magnet synchronous motor q shaft voltage equation
2B is carried out sliding-model control to permanent magnet synchronous motor q shaft voltage equation, is obtained using the vector control method of id=0
It arrivesAndAfter transposition
2C is enabledIn conjunction withIt obtains
2D is enabledIt can obtain
Wherein RS is stator resistance, and L is ac-dc axis inductance, ψfIt is permanent magnet flux linkage, T is discrete time；
Step 3, by the numerical value of a, b, c and d in LM algorithm solution procedure 2, detailed process is as follows:
3A selectes fitting function, enables θ=(a b c d)T, i.e.,Choose initial point θ 0, and will damp because
Son is set as λ 0=0.01, and wherein k is the number of iterations, KmaxFor maximum number of iterations, n is the number for acquiring numerical value；
3B is calculatedCalculate functionJacobian matrix
3C calculates gk=(JTJ+λkI)-1JT(y-Aθk), θ k+1=θ k+gk；
3D, ifλ k+1=λ k/10, return step 3B are enabled, ifThen enable λ k+1=10 λ k, return step step 3C；
Step 4, the numerical value of a, b, c and d for being obtained according to step 3 substitute into formula
Obtain the stator resistance R of permanent-magnet synchronous electromagnetismS, exchange axle inductance L and permanent magnet flux linkage ψfValue.
Optionally, in step 1, using inverted M sequence as system incentive signal, the q axis electricity of permanent magnet synchronous motor is acquired
Press uq, q shaft current iq, d shaft current idAnd rotational speed omega method particularly includes:
1A sets constant for permanent magnet synchronous motor q shaft voltage, and inverted M sequence is added to and is operated in stable normality
Permanent magnet synchronous motor q shaft voltage in, to the q shaft voltage of permanent magnet synchronous motor, q shaft current, d shaft current and revolving speed carry out
It samples for the first time；
1B keeps permanent magnet synchronous motor q shaft voltage constant, right on the basis of permanent magnet synchronous motor is not superimposed inverted M sequence
Q shaft voltage, q shaft current, d shaft current and the revolving speed of permanent magnet synchronous motor carry out second and sample；
1C utilizes q shaft voltage, q shaft current, d shaft current and the revolving speed and step of the permanent magnet synchronous motor that step 1 obtains
Q shaft voltage, q shaft current, d shaft current and the revolving speed of 2 obtained permanent magnet synchronous motors, are utilized inverted M sequence as system
When pumping signal, the q shaft voltage u of permanent magnet synchronous motorq, q shaft current iq, d shaft current idAnd rotational speed omega.
Beneficial effect obtained by the present invention includes:
1, select inverted M sequence as the input signal of permanent magnet synchronous motor parameter identification, can to permanent magnet synchronous motor into
The lasting excitation of row improves the accuracy of permanent magnet synchronous motor parameter identification convenient for the adjusting of parameter；
2, the present invention is based on parameter of the LM algorithm to permanent magnet synchronous motor to recognize, and is a kind of pair of permanent magnet synchronous motor
The new method that parameter is recognized, recognizes permanent-magnet synchronous electromagnetic parameter, it is not necessary that the part parameter of electric machine to be set as
Fixed value has the characteristics that at low cost and applicability without additional measuring instrument is utilized
Detailed description of the invention
From following description with reference to the accompanying drawings it will be further appreciated that the present invention, focuses on the principle for showing embodiment
On.
Fig. 1 is a kind of process signal of the permanent magnet synchronous motor parameter identification method based on LM algorithm in the embodiment of the present invention
Figure；
Fig. 2 is to acquire the q axis of permanent magnet synchronous motor using inverted M sequence as system incentive signal in the embodiment of the present invention
Voltage uq, q shaft current iq, d shaft current idAnd the flow diagram of the specific method of rotational speed omega.
Specific embodiment
In order to enable the objectives, technical solutions, and advantages of the present invention are more clearly understood, below in conjunction with embodiment, to this
Invention is further elaborated；It should be appreciated that described herein, the specific embodiments are only for explaining the present invention, and does not have to
It is of the invention in limiting.To those skilled in the art, after access is described in detail below, other systems of the present embodiment
System, method and/or feature will become obvious.All such additional systems, method, feature and advantage are intended to be included in
It in this specification, is included within the scope of the invention, and by the protection of the appended claims.In description described in detail below
The other feature of the disclosed embodiments, and these characteristic roots will be apparent according to described in detail below.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Device or component must have a particular orientation, be constructed and operated in a specific orientation, therefore positional relationship is described in attached drawing
Term only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can
To understand the concrete meaning of above-mentioned term as the case may be.
The present invention be a kind of permanent magnet synchronous motor parameter identification method based on LM algorithm, told about according to Fig. 1-2 with
Lower embodiment:
Embodiment one:
As depicted in figs. 1 and 2, a kind of permanent magnet synchronous motor parameter identification method based on LM algorithm, comprising the following steps:
Step 1, using inverted M sequence as system incentive signal, the q shaft voltage u of permanent magnet synchronous motor is acquiredq, q shaft current
iq, d shaft current idAnd rotational speed omega；
Step 2, permanent magnet synchronous motor discrete equation is constructed, detailed process is as follows:
2A establishes permanent magnet synchronous motor q shaft voltage equation
2B is carried out sliding-model control to permanent magnet synchronous motor q shaft voltage equation, is obtained using the vector control method of id=0
It arrivesAndAfter transposition
2C is enabledIn conjunction with
It obtains
2D is enabledIt can obtain
Wherein RS is stator resistance, and L is exchange axle inductance, ψfIt is permanent magnet flux linkage, T is discrete time；
Step 3, by the numerical value of a, b, c and d in LM algorithm solution procedure 2, detailed process is as follows:
3A selectes fitting function, enables θ=(a b c d)T, i.e.,Choose initial point θ 0, and will damp because
Son is set as λ 0=0.01, and wherein k is the number of iterations, KmaxFor maximum number of iterations, n is the number for acquiring numerical value；
3B is calculatedCalculate functionJacobian matrix
3C calculates gk=(JTJ+λkI)-1JT(y-Aθk), θ k+1=θ k+gk；
3D, ifλ k+1=λ k/10, return step 3B are enabled, ifThen enable λ k+1=10 λ k, return step step 3C；
Step 4, the numerical value of a, b, c and d for being obtained according to step 3 substitute into formula
Obtain the stator resistance R of permanent-magnet synchronous electromagnetismS, exchange axle inductance L and permanent magnet flux linkage ψfValue.
Since inverted M sequence compares M sequence, flip-flop greatly reduces, and is more preferably than M sequence pseudo noise code sequence
Column can carry out Persistent Excitation to identification objects, facilitate adjusting, be the ideal pumping signal of one of System Discrimination.
The present embodiment selects inverted M sequence as the input signal of permanent magnet synchronous motor parameter identification, can be to permanent-magnet synchronous
Motor carries out lasting excitation, convenient for the adjusting of parameter, improves the accuracy of permanent magnet synchronous motor parameter identification.
In addition, it is main using the part parameter of electric machine is set as fixed value both at home and abroad at present, then electromagnetic parameter is carried out
Identification, or the parameter of electric machine is recognized using additional measuring instrument, these methods are at high cost, and applicability is lower.
LM algorithm can solve the least square problem of nonlinear equation, and the present invention is based on LM algorithms to permanent magnet synchronous motor
Parameter recognized, be the new method that a kind of pair of permanent magnet synchronous motor parameter is recognized.Since the present invention is without inciting somebody to action
The part parameter of electric machine is set as fixed value, without additional measuring instrument is utilized, so the method for the invention is at low cost, fits
It is strong with property.
Embodiment two:
As depicted in figs. 1 and 2, a kind of permanent magnet synchronous motor parameter identification method based on LM algorithm, comprising the following steps:
Step 1, using inverted M sequence as system incentive signal, the q shaft voltage u of permanent magnet synchronous motor is acquiredq, q shaft current
iq, d shaft current idAnd rotational speed omega；
Step 2, permanent magnet synchronous motor discrete equation is constructed, detailed process is as follows:
2A establishes permanent magnet synchronous motor q shaft voltage equation
2B is carried out sliding-model control to permanent magnet synchronous motor q shaft voltage equation, is obtained using the vector control method of id=0
It arrivesAndAfter transposition
2C is enabledIn conjunction with
It obtains
2D is enabledIt can obtain
Wherein RS is stator resistance, and L is exchange axle inductance, ψfIt is permanent magnet flux linkage, T is discrete time；
Step 3, by the numerical value of a, b, c and d in LM algorithm solution procedure 2, detailed process is as follows:
3A selectes fitting function, enables θ=(a b c d)T, i.e.,Choose initial point θ 0, and will damp because
Son is set as λ 0=0.01, and wherein k is the number of iterations, KmaxFor maximum number of iterations, n is the number for acquiring numerical value；
3B is calculatedCalculate functionJacobian matrix
3C is calculatedθ k+1=θ k+gk；
3D, ifλ k+1=λ k/10, return step 3B are enabled, ifThen enable λ k+1=10 λ k, return step step 3C；
Step 4, the numerical value of a, b, c and d for being obtained according to step 3 substitute into formula
Obtain the stator resistance R of permanent-magnet synchronous electromagnetismS, exchange axle inductance L and permanent magnet flux linkage ψfValue.
In step 1, using inverted M sequence as system incentive signal, the q shaft voltage u of permanent magnet synchronous motor is acquiredq, q axis
Electric current iq, d shaft current idAnd rotational speed omega method particularly includes:
1A sets constant for permanent magnet synchronous motor q shaft voltage, and inverted M sequence is added to and is operated in stable normality
Permanent magnet synchronous motor q shaft voltage in, to the q shaft voltage of permanent magnet synchronous motor, q shaft current, d shaft current and revolving speed carry out
It samples for the first time.At this point, the q shaft voltage of the permanent magnet synchronous motor sampled, q shaft current, the value of d shaft current and revolving speed by
Two parts composition, a part is generated by the DC voltage of q axis, and another part is generated by inverted M sequence.
1B keeps permanent magnet synchronous motor q shaft voltage constant, right on the basis of permanent magnet synchronous motor is not superimposed inverted M sequence
Q shaft voltage, q shaft current, d shaft current and the revolving speed of permanent magnet synchronous motor carry out second and sample.Sampled value at this time is only by q
The DC voltage of axis generates.
1C utilizes q shaft voltage, q shaft current, d shaft current and the revolving speed and step of the permanent magnet synchronous motor that step 1 obtains
Q shaft voltage, q shaft current, d shaft current and the revolving speed of 2 obtained permanent magnet synchronous motors, are utilized inverted M sequence as system
When pumping signal, the q shaft voltage u of permanent magnet synchronous motorq, q shaft current iq, d shaft current idAnd rotational speed omega.
In conclusion a kind of permanent magnet synchronous motor parameter identification method based on LM algorithm disclosed by the invention, produced
Advantageous effects include:
1, select inverted M sequence as the input signal of permanent magnet synchronous motor parameter identification, can to permanent magnet synchronous motor into
The lasting excitation of row improves the accuracy of permanent magnet synchronous motor parameter identification convenient for the adjusting of parameter；
2, the present invention is based on parameter of the LM algorithm to permanent magnet synchronous motor to recognize, and is a kind of pair of permanent magnet synchronous motor
The new method that parameter is recognized, recognizes permanent-magnet synchronous electromagnetic parameter, it is not necessary that the part parameter of electric machine to be set as
Fixed value has the characteristics that at low cost and applicability without additional measuring instrument is utilized
Although describing the present invention by reference to various embodiments above, but it is to be understood that of the invention not departing from
In the case where range, many changes and modifications can be carried out.That is methods discussed above, system and equipment are examples,
Various processes or component can suitably be omitted, replace or be added to various configurations.For example, in alternative configuration, can with institute
The order in a different order of description executes method and/or can add, omits and/or combine various parts.Moreover, about certain
The feature of configuration description can be combined with various other configurations, can such as combine the different aspect and member of configuration in a similar way
Element.In addition, can update as technology develops element therein, i.e., many elements are examples, be not intended to limit the present invention disclose or
The scope of the claims.
Give detail in the description to provide to the thorough understanding for including the exemplary configuration realized.However,
Configuration can be practiced without these specific details, such as has been illustrated with well-known circuit, process, calculation
Method, structure and technology are without unnecessary details, to avoid fuzzy configuration.The description only provides example arrangement, and unlimited
The scope of the claims processed, applicability or configuration.It is used on the contrary, front will provide the description of configuration for those skilled in the art
Realize the enabled description of described technology.It, can be to element in the case where not departing from spirit or scope disclosed by the invention
Function and arrangement carry out various changes.
To sum up, be intended to foregoing detailed description be considered as it is illustrative and not restrictive, and it is to be understood that below
Claim (including all equivalents) is intended to limit the spirit and scope of the present invention.The above embodiment is interpreted as only using
In illustrating the present invention rather than limit the scope of the invention.After the content for having read record of the invention, technology
Personnel can make various changes or modifications the present invention, these equivalence changes and modification equally fall into the claims in the present invention and limited
Fixed range.
Claims (2)
1. a kind of permanent magnet synchronous motor parameter identification method based on LM algorithm, which comprises the following steps:
Step 1, using inverted M sequence as system incentive signal, the q shaft voltage u of permanent magnet synchronous motor is acquiredq, q shaft current iq、d
Shaft current idAnd rotational speed omega；
Step 2, permanent magnet synchronous motor discrete equation is constructed, detailed process is as follows:
2A establishes permanent magnet synchronous motor q shaft voltage equation
2B is carried out sliding-model control to permanent magnet synchronous motor q shaft voltage equation, is obtained using the vector control method of id=0AndAfter transposition
2C is enabledIn conjunction withIt obtains
2D is enabledIt can obtain
Wherein RS is stator resistance, and L is exchange axle inductance, ψfIt is permanent magnet flux linkage, T is discrete time；
Step 3, by the numerical value of a, b, c and d in LM algorithm solution procedure 2, detailed process is as follows:
3A selectes fitting function, enables θ=(a b c d)T, i.e.,Initial point θ 0 is chosen, and damping factor is set
For λ 0=0.01, wherein k is the number of iterations, KmaxFor maximum number of iterations, n is the number for acquiring numerical value；
3B is calculatedCalculate functionJacobian matrix
3C calculates gk=(JTJ+λkI)-1JT(y-Aθk), θ k+1=θ k+gk；
3D, ifλ k+1=λ k/10, return step 3B are enabled, ifThen enable λ k+1=10 λ k, return step step 3C；
Step 4, the numerical value of a, b, c and d for being obtained according to step 3 substitute into formula
To the stator resistance R of permanent-magnet synchronous electromagnetismS, ac-dc axis inductance L and permanent magnet flux linkage ψfValue.
2. a kind of permanent magnet synchronous motor parameter identification method based on LM algorithm as described in claim 1, which is characterized in that In
In step 1, using inverted M sequence as system incentive signal, the q shaft voltage u of permanent magnet synchronous motor is acquiredq, q shaft current iq, d axis
Electric current idAnd rotational speed omega method particularly includes:
1A sets constant for permanent magnet synchronous motor q shaft voltage, and inverted M sequence is added to and is operated in stable normality forever
In the q shaft voltage of magnetic-synchro motor, first is carried out to the q shaft voltage of permanent magnet synchronous motor, q shaft current, d shaft current and revolving speed
Secondary sampling；
1B keeps permanent magnet synchronous motor q shaft voltage constant, on the basis of permanent magnet synchronous motor is not superimposed inverted M sequence, to permanent magnetism
Q shaft voltage, q shaft current, d shaft current and the revolving speed of synchronous motor carry out second and sample；
1C, q shaft voltage, q shaft current, d shaft current and the revolving speed and step 2 of the permanent magnet synchronous motor obtained using step 1 are obtained
Q shaft voltage, q shaft current, d shaft current and the revolving speed of the permanent magnet synchronous motor arrived, are utilized inverted M sequence as system incentive
When signal, the q shaft voltage u of permanent magnet synchronous motorq, q shaft current iq, d shaft current idAnd rotational speed omega.
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| CN110912482A (en) * | 2019-12-11 | 2020-03-24 | 长沙市日业电气有限公司 | Permanent magnet synchronous motor flux linkage and temperature estimation method |
| CN112350638A (en) * | 2020-10-12 | 2021-02-09 | 北京自动化控制设备研究所 | Servo motor parameter identification method based on nonlinear optimization |
| CN113141133A (en) * | 2021-04-26 | 2021-07-20 | 湖南大学 | Modular multi-winding permanent magnet motor parameter identification method and system based on least square method |
| CN113141140A (en) * | 2021-04-09 | 2021-07-20 | 北京电力设备总厂有限公司 | Online identification method for parameters of surface-mounted permanent magnet synchronous motor |
| CN113949316A (en) * | 2021-10-22 | 2022-01-18 | 中国船舶重工集团公司第七0四研究所 | Permanent magnet synchronous motor parameter identification method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110912482A (en) * | 2019-12-11 | 2020-03-24 | 长沙市日业电气有限公司 | Permanent magnet synchronous motor flux linkage and temperature estimation method |
| CN110912482B (en) * | 2019-12-11 | 2023-08-18 | 长沙市日业电气有限公司 | Permanent magnet synchronous motor flux linkage and temperature estimation method |
| CN112350638A (en) * | 2020-10-12 | 2021-02-09 | 北京自动化控制设备研究所 | Servo motor parameter identification method based on nonlinear optimization |
| CN113141140A (en) * | 2021-04-09 | 2021-07-20 | 北京电力设备总厂有限公司 | Online identification method for parameters of surface-mounted permanent magnet synchronous motor |
| CN113141140B (en) * | 2021-04-09 | 2023-04-25 | 北京电力设备总厂有限公司 | Online identification method for parameters of surface-mounted permanent magnet synchronous motor |
| CN113141133A (en) * | 2021-04-26 | 2021-07-20 | 湖南大学 | Modular multi-winding permanent magnet motor parameter identification method and system based on least square method |
| CN113141133B (en) * | 2021-04-26 | 2022-08-02 | 湖南大学 | Modular multi-winding permanent magnet motor parameter identification method and system based on least square method |
| CN113949316A (en) * | 2021-10-22 | 2022-01-18 | 中国船舶重工集团公司第七0四研究所 | Permanent magnet synchronous motor parameter identification method |
| CN113949316B (en) * | 2021-10-22 | 2023-06-02 | 中国船舶重工集团公司第七0四研究所 | Permanent magnet synchronous motor parameter identification method |
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