CN109768749A - Threephase asynchronous machine rotor time constant real-time correction method - Google Patents
Threephase asynchronous machine rotor time constant real-time correction method Download PDFInfo
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Abstract
The present invention relates to a kind of threephase asynchronous machine rotor time constant real-time correction methods, by establishing excitation mutual inductance inquiry table and rotor resistance temperature look-up table, inquire excitation mutual inductance L according to exciting currentm, excitation mutual inductance LmAdd rotor leakage inductance LσObtain inductor rotor Lr, rotor resistance R is inquired according to motor stator winding temperature, that is, temperature of rotorr, according to inductor rotor LrWith rotor resistance RrRotor time constant can be calculated, realizes the real time correction to rotor time constant.Rotor time constant real-time correction method of the present invention is easy to Project Realization, not only considers influence of the temperature of rotor to rotor resistance, but also considers that magnetic linkage is saturated the influence to inductor rotor；It is applicable not only to operation area within motor base speed, and is suitable for motor high speed weak magnetic area；And energy real time correction threephase asynchronous machine rotor time constant, rotor field-oriented accuracy, direct torque precision, weak magnetic control stability and running efficiency of system are improved, the dynamic and static state performance of vector controlled is improved.
Description
Technical field
It is real to the field of test technology more particularly to a kind of threephase asynchronous machine rotor time constant is dragged that the invention belongs to motors
When bearing calibration.
Background technique
Based on the appearance of rotor field-oriented vector control theory, obtain threephase asynchronous machine and DC speed regulation system
The same quiet, dynamic property of system so that threephase asynchronous machine is widely used in AC Drive field.But accurate field orientation
It is necessarily dependent upon the accurate parameter of electric machine, in all multi-parameters of asynchronous machine, rotor time constant Tr(Tr=Lr/Rr, LrFor rotor
Inductance, RrFor rotor resistance) influence to field orientation is maximum.Rotor time constant, which deviates, will directly affect slip frequency
Calculating, cause field orientation inaccurate, so that the static and dynamic performance of system be made to degenerate, the electromagnetic torque of motor caused to shake
It swings, speed adjusting performance is deteriorated, the loss of electric machine increases, system effectiveness decline；And exciting current can not accurately track, motor overheating meeting
The deviation for aggravating rotor time constant, will lead to electromagnetic torque forfeiture into vicious circle, when serious, and vector controlled is lost completely
Effect.Therefore, based in rotor field-oriented vector control theory application process, needing to carry out real-time school to rotor time constant
Just.
Currently used rotor time constant correction is mainly using based on model reference adaptive, Extended Kalman filter
The rotor time constants discrimination methods such as device, extension Luenberger observer, least square method, signal injection, artificial neural network, but
It is that the above method is theoretical complicated, engineering practice is poor；Or only consider temperature to rotor resistance RrInfluence, without consider magnetic
Chain is saturated to inductor rotor LrInfluence；Or rotor time constant within base speed can only be recognized, and to high speed weak magnetic area
It is helpless.Therefore, above-mentioned rotor time constant bearing calibration there are aiming at the problem that, it is necessary to study a kind of efficient, base
In the threephase asynchronous machine rotor time constant real-time correction method of engineer application.
Summary of the invention
The present invention provides a kind of phase asynchronous electricity on the basis of the above-mentioned rotor time constant bearing calibration of solution is insufficient
Machine rotor time constant real-time correction method, using this method, energy real time correction threephase asynchronous machine rotor time constant is improved
Rotor field-oriented accuracy, direct torque precision, weak magnetic control stability and running efficiency of system, improve vector controlled
Dynamic and static state performance.
A kind of threephase asynchronous machine rotor time constant real-time correction method, comprising:
Establish exciting current idWith excitation mutual inductance LmRelation table, i.e. excitation mutual inductance inquiry table；
Establish rotor resistance RrWith temperature of rotor T2Relation table, i.e. rotor resistance temperature look-up table；
According to the exciting current value i of measurementd, inquire the mutual inductance value L of excitationm；
According to the rotor temperature value T of measurement2, inquire rotor resistance value Rr；
According to inductor rotor calculation formula Lr=Lm+Lσ, solve inductor rotor Lr, wherein LσFor rotor leakage inductance；
According to rotor time constant calculation formula Tr=Lr/Rr, solve rotor time constant Tr, to rotor time constant TrInto
Row real time correction.
Preferably, according to the exciting current value i of measurementd, inquire the mutual inductance value L of excitationmMethod particularly includes:
According to rotor flux-orientation vector control algorithm, window filtering is carried out to exciting current；
First-order lag filtering is carried out to the exciting current after window filtering, obtains filtered exciting current value id；
According to filtered exciting current value id, excitation mutual inductance inquiry table is inquired, the mutual inductance value L of excitation is obtainedm。
Preferably, according to the rotor temperature value T of measurement2, inquire rotor resistance value RrMethod particularly includes:
Motor stator winding temperature is measured, temperature of rotor is replaced using stator winding temperature, window is carried out to temperature of rotor
Filtering；
First-order lag filtering is carried out to the temperature of rotor after window filtering, obtains filtered rotor temperature value T2；
According to filtered rotor temperature value T2, rotor resistance temperature look-up table is inquired, rotor resistance value R is obtainedr。
Preferably, the window filtering uses mean filter, takes weighted average, window letter after removing maxima and minima
Number uses rectangular window.
Preferably, the exciting current upper limit value of excitation mutual inductance inquiry table is set according to motor maximum output torque；According to height
Fast weak magnetic area depth sets exciting current lower limit value, and value step-length is M.
Preferably, the temperature of rotor upper limit value of rotor resistance temperature look-up table is set according to overtemperature prote value；According to room temperature
Temperature of rotor lower limit value is set, and value step-length is N.
Preferably, if the exciting current value i of actual measurementd∈(id_min,id_max) and id≠ A*M, A are integer, then basis
Two adjacent Query Values of exciting current value carry out linearization process, calculate the mutual inductance value of excitation；If the exciting current of actual measurement
Value id≥id_max, then the mutual inductance value of excitation is exciting current upper limit value id_maxThe corresponding mutual inductance value L of excitationm_max；If actual measurement
Exciting current value id≤id_min, then the mutual inductance value of excitation is exciting current lower limit value id_minThe corresponding mutual inductance value L of excitationm_min；
If the rotor temperature value T of actual measurement2∈(T2_min,T2_max) and T2≠ A*N, A are integer, then according to temperature of rotor
It is worth two adjacent Query Values and carries out linearization process, calculates rotor resistance value；If the rotor temperature value T of actual measurement2≥
T2_max, then rotor resistance value is temperature of rotor upper limit value T2_maxCorresponding rotor resistance value Rr_max；If the rotor temperature of actual measurement
Angle value T2≤T2_min, then rotor resistance value is temperature of rotor lower limit value T2_minCorresponding rotor resistance value Rr_min。
Preferably, the exciting current value i of actual measurementd∈(id_min,id_max) and idIt is any one when ≠ A*M, A are integer
Point (id_i, Lm_i) meet Linearity Formula:
Wherein, Lm_i-1、Lm_i+1Respectively arbitrary point id_iAdjacent two o'clock id_i-1、id_i+1The corresponding mutual inductance value of excitation；
Similarly, the rotor temperature value T of actual measurement2∈(T2_min,T2_max) and T2≠ A*N, A are integer, any point
(T2_i, Rr_i) meet Linearity Formula:
Wherein, Rr_i-1、Rr_i+1Respectively arbitrary point idAdjacent two o'clock T2_i-1、T2_i+1The corresponding mutual inductance value of excitation.
The prior art is compared, and the advantages and positive effects of the present invention are:
(1) the present invention provides a kind of threephase asynchronous machine rotor time constant real-time correction methods, by establishing excitation
Mutual inductance inquiry table and rotor resistance temperature look-up table inquire excitation mutual inductance L according to exciting currentm, excitation mutual inductance LmAdd rotor leakage inductance
LσObtain inductor rotor Lr, rotor resistance R is inquired according to motor stator winding temperature, that is, temperature of rotorr, according to inductor rotor LrWith
Rotor resistance RrRotor time constant can be calculated, realizes the real time correction to rotor time constant.Rotor time of the present invention
Constant real-time correction method is easy to Project Realization, not only considers influence of the temperature of rotor to rotor resistance, but also considers that magnetic linkage is full
With the influence to inductor rotor；It is applicable not only to operation area within motor base speed, and is suitable for motor high speed weak magnetic area.
(2) rotor time constant real-time correction method energy real time correction threephase asynchronous machine rotor time constant of the present invention,
Rotor field-oriented accuracy, direct torque precision, weak magnetic control stability and running efficiency of system are improved, vector control is improved
The dynamic and static state performance of system.And software program code is short, memory is small, arithmetic speed is high, and has stronger robustness, is not in
System out-of-control phenomenon caused by correction failure.
Detailed description of the invention
Fig. 1 is based on rotor field-oriented vector controlled schematic diagram；
Fig. 2 (a) is excitation mutual inductance curve synoptic diagram；
Fig. 2 (b) is rotor resistance temperature curve schematic diagram；
Fig. 3 is rotor time constant correction principle figure of the invention.
Specific embodiment
A specific embodiment of the invention is further described below in conjunction with attached drawing.
The present invention is in the prior art using the side such as adaptive-filtering, Kalman filtering, least square method, neural network
Method carries out the defect of engineering practice difference existing for the method for rotor time constant identification, proposes a kind of simple and practical three-phase
Time constant of rotor of asynchronous machine real-time correction method.Producer provides excitation mutual inductance curve (excitation simultaneously when general Motor Production Test
The relation curve of mutual inductance and exciting current) and rotor resistance temperature curve (relation curve of rotor resistance and temperature of rotor), or
Method measurement excitation mutual inductance curve or rotor based on the identification of the parameters of electric machine such as rotor field-oriented vector controlled can be used in person
Resistance temperature curve.
It is provided in the present embodiment a kind of based on rotor field-oriented vector control algorithm measurement excitation mutual inductance curve, ginseng
It examines shown in Fig. 1, the specific method is as follows:
Speed probe real-time measurement rotor angular frequencyr, slip angular frequency ωsIt is configured by host computer, electric angle frequency
Rate ωeFor rotor angular frequencyrWith slip angular frequency ωsSum, electric angle frequencies omegaeRotor flux linkage orientation angle θ is obtained after integral.
Motor three-phase current ia、ib、icIt is converted by Clark, the component i being decomposed under alpha-beta rest frameα、iβ, then
iα、iβThe component i being decomposed under d-q rotating coordinate system is converted through Park againd、iq, idFor excitation current component, iqFor torque current
Component, θ are rotor flux linkage orientation angle.
The exciting current reference value i that d, q axis are givend *, torque current reference iq *With exciting current id, torque current iq
It is compared, after its difference is carried out proportional integration operation respectively, obtains d, q shaft voltage UdWith Uq.Then by d, q shaft voltage Ud、
UqIpark transformation is carried out, component U of the output voltage under alpha-beta rest frame is obtainedα、Uβ；It most modulates and synthesizes through SVPWM afterwards
Pwm pulse wave, control 6 IGBT's of inverter bridge turns on and off, and realizes the control to motor.
Specifically, different exciting current reference value i is arranged in host computerd_n *With torque current reference iq_n *, id_n *=
iq_n *；I.e. host computer according to asynchronous machine to be measured set exciting current reference value upper limit value id_max *, lower limit value id_min *, i.e.,
id_n *∈[id_min *, id_max *], set value step-length as M, when general test can specifically be arranged step-length M's according to sampling thheorem
Value.Then host computer adjusts slip angular frequency ω in real times, orient rotor field accurately, rotor flux linkage orientation angle is equal at this time
Actual rotor magnetic linkage angle records different exciting current reference value id_n *Corresponding motor output torque maximum of Tmax_n；That is basis
Asynchronous machine to be measured sets slip angular frequency ωs, slip angular frequency ω is setsValue range, i.e. ωs∈[ωmin,
ωmax], wherein ωmaxFor slip angular frequency upper limit value, ωminFor slip angular frequency lower limit value, value step-length is set as N, generally
When test can the value of step-length N be set as the case may be, such as be usually arranged as N=1rad/s or N=2rad/s.
When exciting current value is id_n *When, slip angular frequency ω is adjusted in real times, turn the output of torque sensor measurement
When square maximum, maximum output torque value T is recordedmax_n。
When rotor field accurately orients, according to rotor flux calculation formula | ψr|=Lmid *With output torque formulaSolve different exciting current reference value id_n *The corresponding mutual inductance value L of excitationm_n, can be obtained and encourage
Magnetic mutual inductance LmWith exciting current id *Relation curve；Wherein pnFor motor number of pole-pairs, LrFor inductor rotor.Due to inductor rotor Lr
For excitation mutual inductance LmWith rotor leakage inductance LσThe sum of, and rotor leakage inductance LσMuch smaller than excitation mutual inductance Lm, it is believed that Lr≈Lm；When rotor leaks
Feel LσWhen unknown, L is rule of thumb taken under normal conditionsr/Lm=1.03, exciting current is i at this timed *When excitation measurement of mutual inductance value
Are as follows:
As a result, by above-mentioned excitation measurement of mutual inductance method, excitation mutual inductance curve can be obtained.Similarly, rotor resistance temperature
Similar approach measurement can also be used in curve, repeats no more in the present invention.
To sum up, excitation mutual inductance curve and rotor resistance temperature curve can be obtained, this is based on, the present invention provides one kind three is different
Rotor time constant real-time correction method is walked, with reference to shown in Fig. 2 (a), 2 (b), Fig. 3, comprising the following steps:
(1) according to excitation mutual inductance curve, exciting current i is establisheddWith excitation mutual inductance LmRelation table, i.e. excitation mutual inductance inquiry table:
Specifically, the exciting current upper limit value of excitation mutual inductance inquiry table is arranged according to motor maximum output torque, according to high speed weak magnetic area
Depth sets exciting current lower limit value, and value step-length is M.
With reference to Fig. 2 (a), table 1 indicates the excitation mutual inductance established in the 25KW threephase asynchronous machine test for electric vehicle of certain type
The exciting current upper limit 90A of inquiry table, inquiry table is selected according to motor maximum output torque, and exciting current lower limit 20A is according to height
Fast weak magnetic area depth selection, mono- inquiry data of the every 5A of inquiry table accuracy selection exciting current.
Table 1- excitation mutual inductance inquiry table (2) establishes rotor resistance R according to rotor resistance temperature curverWith temperature of rotor T2It closes
It is table, i.e. rotor resistance temperature look-up table: specifically, the rotor temperature of rotor resistance temperature look-up table is arranged according to overtemperature prote value
Spend upper limit value；Temperature of rotor lower limit value is set according to room temperature, value step-length is N.
With reference to Fig. 2 (b), table 2 is the rotor resistance temperature look-up table accordingly established, the temperature of rotor upper limit 120 of inquiry table
It DEG C is selected according to motor overtemperature prote value, 25 DEG C of selection room temperature of temperature of rotor lower limit, the optional temperature of rotor every 5 of inquiry meter accuracy
DEG C inquiry data.
Table 2- rotor resistance temperature look-up table (3) is according to the exciting current value i of measurementd, inquire the mutual inductance value L of excitationm。
Refering to what is shown in Fig. 3, due in the analog acquisition signal of system there are noise jamming, to prevent sampling interference to turning
The influence of sub- time constant correction, needs to carry out window filtering to exciting current and temperature of rotor；Meanwhile in motor control process
In, especially in Dynamic Regulating Process, exciting current, which will be adjusted quickly, to be even mutated, since rotor flux lags behind excitation electricity
Stream, it is therefore desirable to second be carried out to exciting current and filtered, first-order lag filtering is selected.
Specifically, carrying out window filtering, window to exciting current according to rotor flux-orientation vector control algorithm in the present invention
Mouth filtering uses mean filter, i.e., takes weighted average after the maxima and minima of removal exciting current, window function uses square
Shape window.Then first-order lag filtering (i.e. low-pass filtering, lag time t are carried out to the exciting current after window filteringo), it obtains
Filtered exciting current value id；According to filtered exciting current value id, excitation mutual inductance inquiry table is inquired, excitation mutual inductance is obtained
Value Lm。
If the exciting current value i of actual measurementd∈(id_min,id_max) and id≠ A*M, A are integer, then according to exciting current
It is worth two adjacent Query Values and carries out linearization process, calculates the mutual inductance value of excitation；If the exciting current value i of actual measurementd≥
id_max, then the mutual inductance value of excitation is exciting current upper limit value id_maxThe corresponding mutual inductance value L of excitationm_max；If the excitation electricity of actual measurement
Flow valuve id≤id_min, then the mutual inductance value of excitation is exciting current lower limit value id_minThe corresponding mutual inductance value L of excitationm_min.That is:
The exciting current value i of actual measurementd∈(id_min,id_max) and idWhen ≠ A*M, A are integer, any point (id_i,
Lmi) meet Linearity Formula:
Wherein, Lm_i-1、Lm_i+1Respectively arbitrary point id_iAdjacent two o'clock id_i-1、id_i+1The corresponding mutual inductance value of excitation.
(4) according to the rotor temperature value T of measurement2, inquire rotor resistance value Rr。
Due to heat transfer, the variation of rotor resistance will be slower than the variation of temperature sensor temperature collection, and temperature
Variation will be much more slowly than rotor flux variation, also need to carry out first-order lag filtering to temperature of rotor.In addition, due to rotor around
Group temperature cannot be measured directly, replace temperature of rotor using stator winding temperature or motor case temperature.
Specifically, measurement motor stator winding temperature, using stator winding temperature replace temperature of rotor, to temperature of rotor into
Row window filtering, window filtering use mean filter, i.e., take weighted average after the maxima and minima of removal temperature of rotor,
Window function uses rectangular window.Then first-order lag filtering (i.e. low-pass filtering, when lag is carried out to the temperature of rotor after window filtering
Between be t1), obtain filtered rotor temperature value T2。
Similarly, according to filtered rotor temperature value T2, rotor resistance temperature look-up table is inquired, rotor resistance value R is obtainedr。
If the rotor temperature value T of actual measurement2∈(T2_min,T2_max) and T2≠ A*N, A are integer, then adjacent according to rotor temperature value
Two Query Values carry out linearization process, calculate rotor resistance value；If the rotor temperature value T of actual measurement2≥T2_max, then rotor
Resistance value is temperature of rotor upper limit value T2_maxCorresponding rotor resistance value Rr_max；If the rotor temperature value T of actual measurement2≤
T2_min, then rotor resistance value is temperature of rotor lower limit value T2_minCorresponding rotor resistance value Rr_min。
The rotor temperature value T of actual measurement2∈(T2_min,T2_max) and T2≠ A*N, A are integer, any point (T2_i,
Rr_i) meet Linearity Formula:
Wherein, Rr_i-1、Rr_i+1Respectively arbitrary point idAdjacent two o'clock T2_i-1、T2_i+1The corresponding mutual inductance value of excitation.
In to the test of certain type 25KW threephase asynchronous machine for electric vehicle, when exciting current is with temperature of rotor window filtering
Sliding window size selects 16, and residue takes weighted average, filtering cycle after filtering mode is chosen to remove maximum value, minimum value
For the sampling period.Wherein, when exciting current carries out first-order low-pass wave, cutoff frequency is specifically chosen 30Hz, lag time 50ms.
When temperature of rotor carries out low-pass filtering, cutoff frequency is specifically chosen 0.15Hz, lag time 10s.
(5) according to inductor rotor calculation formula Lr=Lm+Lσ, solve inductor rotor Lr, wherein LσFor rotor leakage inductance；Motor control
During system, inquiry obtains excitation mutual inductance L after carrying out window filtering, first-order lag filtering to exciting currentm, excitation mutual inductance LmAdd
Rotor leakage inductance LσObtain inductor rotor Lr.Rotor leakage inductance LσIt is varied less in motor operation course, and rotor leakage inductance LσIt is much smaller than
Excitation mutual inductance Lm, therefore Lr≈Lm, as rotor leakage inductance LσWhen unknown, L can be taken based on experience valuer=1.03Lm。
Inquiry obtains rotor resistance R after carrying out window filtering, first-order lag filtering to temperature of rotorr, according to Tr=Lr/Rr
Obtain rotor time constant Tr, realize the real time correction to rotor time constant.
In conclusion of the invention proposes a kind of very useful threephase asynchronous machine rotor time constant real time correction
Method is distinguished with rotor time constant is carried out using the methods of adaptive-filtering, Kalman filtering, least square method, neural network
The method of knowledge compares, and rotor time constant real-time correction method of the present invention is easy to Project Realization, not only considers temperature of rotor pair
The influence of rotor resistance, and consider that magnetic linkage is saturated the influence to inductor rotor, it is applicable not only to Operational Zone within motor base speed
Domain, and it is suitable for motor high speed weak magnetic area.Energy real time correction threephase asynchronous machine rotor time constant, it is fixed to improve rotor field
To accuracy, direct torque precision, weak magnetic control stability and running efficiency of system, the sound state property of vector controlled is improved
Energy.And software program code is short, memory is small, arithmetic speed is high, and has stronger robustness, is not in that correction failure is made
At system out-of-control phenomenon.
Current rotor time constant real-time correction method of the present invention has applied Mr. Yu's type 25kW for electric vehicle phase asynchronous
During motor electricity drives, full torque range torque precision is high, and direct torque deviation is less than 2Nm, and full range of speeds motor operation is stablized, low
Fast non-jitter phenomenon, at a high speed without out-of-control phenomenon, the motor feels hot mitigates, and system effectiveness improves.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but without departing from the technical solutions of the present invention, according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the protection scope of technical solution of the present invention.
Claims (8)
1. a kind of threephase asynchronous machine rotor time constant real-time correction method characterized by comprising
Establish exciting current idWith excitation mutual inductance LmRelation table, i.e. excitation mutual inductance inquiry table；
Establish rotor resistance RrWith temperature of rotor T2Relation table, i.e. rotor resistance temperature look-up table；
According to the exciting current value i of measurementd, inquire the mutual inductance value L of excitationm；
According to the rotor temperature value T of measurement2, inquire rotor resistance value Rr；
According to inductor rotor calculation formula Lr=Lm+Lσ, solve inductor rotor Lr, wherein LσFor rotor leakage inductance；
According to rotor time constant calculation formula Tr=Lr/Rr, solve rotor time constant Tr, to rotor time constant TrIt carries out real
Shi Jiaozheng.
2. threephase asynchronous machine rotor time constant real-time correction method according to claim 1, which is characterized in that according to
The exciting current value i of measurementd, inquire the mutual inductance value L of excitationmMethod particularly includes:
According to rotor flux-orientation vector control algorithm, window filtering is carried out to exciting current；
First-order lag filtering is carried out to the exciting current after window filtering, obtains filtered exciting current value id；
According to filtered exciting current value id, excitation mutual inductance inquiry table is inquired, the mutual inductance value L of excitation is obtainedm。
3. threephase asynchronous machine rotor time constant real-time correction method according to claim 1, which is characterized in that according to
The rotor temperature value T of measurement2, inquire rotor resistance value RrMethod particularly includes:
Motor stator winding temperature is measured, temperature of rotor is replaced using stator winding temperature, window filtering is carried out to temperature of rotor；
First-order lag filtering is carried out to the temperature of rotor after window filtering, obtains filtered rotor temperature value T2；
According to filtered rotor temperature value T2, rotor resistance temperature look-up table is inquired, rotor resistance value R is obtainedr。
4. threephase asynchronous machine rotor time constant real-time correction method according to claim 2 or 3, which is characterized in that
The window filtering uses mean filter, takes weighted average after removing maxima and minima, window function uses rectangular window.
5. threephase asynchronous machine rotor time constant real-time correction method according to claim 4, which is characterized in that according to
The exciting current upper limit value of motor maximum output torque setting excitation mutual inductance inquiry table；Excitation is set according to high speed weak magnetic area depth
Floor level of electric current, value step-length are M.
6. threephase asynchronous machine rotor time constant real-time correction method according to claim 4, which is characterized in that according to
The temperature of rotor upper limit value of overtemperature prote value setting rotor resistance temperature look-up table；According to room temperature, temperature of rotor lower limit value is set,
Value step-length is N.
7. threephase asynchronous machine rotor time constant real-time correction method according to claim 5 or 6, which is characterized in that
If the exciting current value i of actual measurementd∈(id_min,id_max) and id≠ A*M, A are integer, then according to exciting current value phase
Two adjacent Query Values carry out linearization process, calculate the mutual inductance value of excitation；If the exciting current value i of actual measurementd≥id_max, then
The mutual inductance value of excitation is exciting current upper limit value id_maxThe corresponding mutual inductance value L of excitationm_max；If the exciting current value i of actual measurementd≤
id_min, then the mutual inductance value of excitation is exciting current lower limit value id_minThe corresponding mutual inductance value L of excitationm_min；
If the rotor temperature value T of actual measurement2∈(T2_min,T2_max) and T2≠ A*N, A are integer, then according to rotor temperature value phase
Two adjacent Query Values carry out linearization process, calculate rotor resistance value；If the rotor temperature value T of actual measurement2≥T2_max, then
Rotor resistance value is temperature of rotor upper limit value T2_maxCorresponding rotor resistance value Rr_max；If the rotor temperature value T of actual measurement2≤
T2_min, then rotor resistance value is temperature of rotor lower limit value T2_minCorresponding rotor resistance value Rr_min。
8. threephase asynchronous machine rotor time constant real-time correction method according to claim 7, which is characterized in that practical
The exciting current value i of measurementd∈(id_min,id_max) and idWhen ≠ A*M, A are integer, any point (id_i, Lm_i) meet linearly
Calculation formula:
Wherein, Lm_i-1、Lm_i+1Respectively arbitrary point id_iAdjacent two o'clock id_i-1、id_i+1The corresponding mutual inductance value of excitation；
Similarly, the rotor temperature value T of actual measurement2∈(T2_min,T2_max) and T2≠ A*N, A are integer, any point (T2_i,
Rr_i) meet Linearity Formula:
Wherein, Rr_i-1、Rr_i+1Respectively arbitrary point idAdjacent two o'clock T2_i-1、T2_i+1The corresponding mutual inductance value of excitation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518850A (en) * | 2019-09-12 | 2019-11-29 | 桂林电子科技大学 | Internal permanent magnet synchronous motor single neuron self-adaptive PID controller field weakening control method |
| CN110531682A (en) * | 2019-09-19 | 2019-12-03 | 中车青岛四方车辆研究所有限公司 | The general traction control platform of rail vehicle and method |
| CN110611471A (en) * | 2019-10-31 | 2019-12-24 | 中车青岛四方车辆研究所有限公司 | Control method and control device for output torque of three-phase asynchronous motor |
| CN111049450A (en) * | 2019-12-25 | 2020-04-21 | 上海电力大学 | Asynchronous motor vector control rotor winding temperature on-line monitoring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06319290A (en) * | 1993-05-07 | 1994-11-15 | Meidensha Corp | Automatic torque boost control and slip compensation control method for inverter |
| CN103095205A (en) * | 2011-10-27 | 2013-05-08 | Ls产电株式会社 | Apparatus For Estimating Rotor Time Constant Of Induction Motor |
| CN103731081A (en) * | 2013-12-30 | 2014-04-16 | 深圳市航盛电子股份有限公司 | Method for determining optimal time constant of three-phase asynchronous motor rotor |
| CN109327171A (en) * | 2018-09-03 | 2019-02-12 | 北京交通大学 | A strategy for suitable for rail traffic traction electric machine on-line parameter identification |
-
2019
- 2019-03-25 CN CN201910227182.9A patent/CN109768749A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06319290A (en) * | 1993-05-07 | 1994-11-15 | Meidensha Corp | Automatic torque boost control and slip compensation control method for inverter |
| CN103095205A (en) * | 2011-10-27 | 2013-05-08 | Ls产电株式会社 | Apparatus For Estimating Rotor Time Constant Of Induction Motor |
| CN103731081A (en) * | 2013-12-30 | 2014-04-16 | 深圳市航盛电子股份有限公司 | Method for determining optimal time constant of three-phase asynchronous motor rotor |
| CN109327171A (en) * | 2018-09-03 | 2019-02-12 | 北京交通大学 | A strategy for suitable for rail traffic traction electric machine on-line parameter identification |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518850A (en) * | 2019-09-12 | 2019-11-29 | 桂林电子科技大学 | Internal permanent magnet synchronous motor single neuron self-adaptive PID controller field weakening control method |
| CN110531682A (en) * | 2019-09-19 | 2019-12-03 | 中车青岛四方车辆研究所有限公司 | The general traction control platform of rail vehicle and method |
| CN110531682B (en) * | 2019-09-19 | 2020-09-29 | 中车青岛四方车辆研究所有限公司 | General traction control platform and method for railway vehicle |
| CN110611471A (en) * | 2019-10-31 | 2019-12-24 | 中车青岛四方车辆研究所有限公司 | Control method and control device for output torque of three-phase asynchronous motor |
| CN110611471B (en) * | 2019-10-31 | 2021-01-22 | 中车青岛四方车辆研究所有限公司 | Control method and control device for output torque of three-phase asynchronous motor |
| CN111049450A (en) * | 2019-12-25 | 2020-04-21 | 上海电力大学 | Asynchronous motor vector control rotor winding temperature on-line monitoring method |
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