CN109802614A - A kind of permanent magnet synchronous motor inductance parameters identification system and method - Google Patents
A kind of permanent magnet synchronous motor inductance parameters identification system and method Download PDFInfo
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- CN109802614A CN109802614A CN201910000020.1A CN201910000020A CN109802614A CN 109802614 A CN109802614 A CN 109802614A CN 201910000020 A CN201910000020 A CN 201910000020A CN 109802614 A CN109802614 A CN 109802614A
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Abstract
The invention discloses a kind of permanent magnet synchronous motor inductance parameters identification system and methods, link is calculated by current detecting, quadrature axis current detection calculates link, sliding moding structure location identification link, angular deviation calculates link and inductance deviation calculates compensation tache composition, the three-phase current that permanent magnet synchronous motor samples is as input, the available rough location identification result of sliding moding structure location identification link, angular deviation calculates the available location identification steady-state deviation of link, inductance deviation calculates compensation tache can calculate permanent magnet synchronous motor inductance parameters deviation according to location identification steady-state deviation, and then obtain motor inductances parameter exact value.
Description
Technical field
The invention belongs to signal detection fields, and in particular to a kind of permanent magnet synchronous motor inductance parameters identification system, and
Real-time online discrimination method is suitable for permanent magnet synchronous motor high performance control place, promote particularly suitable for wheel rim and integrate propulsion etc.
Need the field using position Sensorless Control.
Background technique
With the raising of rare earth permanent-magnetic material performance and the development of automatic control technology, permanent magnet synchronous motor with its power because
Number height, speed-regulating range width, it is easy to maintain the advantages that in electric propulsion field peculiar to vessel using increasingly extensive.But in ship height
Humidity, high smog harsh conditions under, the mechanical position sensors such as rotary transformer reduce permanent magnet synchronous motor operation can
By property and ambient adaptability.Therefore, it is obtained suitable for the Sensorless Control Technique of permanent magnet synchronous motor increasingly extensive
Concern.
When permanent magnet synchronous motor high speed operating condition peculiar to vessel is run, the location identification strategy based on sliding moding structure is with its dynamic
The advantage that characteristic is good, anti-Parameter Perturbation is strong is widely applied.Although sliding moding structure location identification strategy has preferable robustness,
Location identification performance is still influenced by the parameter of electric machine especially inductance parameters accuracy.
Since permanent magnet synchronous motor is an integrated use electromagnetism, calorifics and mechanistic complex device, armature around
The factors such as group temperature change, the saturation of ferromagnetic material can make the variation for causing motor inductances parameter.
The field using Sensorless Control Technique is needed in wheel rim propulsion etc., motor inductances parameter error will affect
Location identification algorithm performance causes the unfavorable factors such as low, the load capacity decline of propulsion system power factor.To avoid joining because of inductance
Number deviation causes the reduction of propulsion system power factor, it is necessary to carry out the on-line identification of the parameter of electric machine.
Summary of the invention
One of the objects of the present invention is to provide a kind of permanent magnet synchronous motor inductance parameters identification systems, are become according to sliding formwork and are tied
The deviation of structure location identification calculates the deviation of motor inductances parameter, and then obtains motor inductances true value.
The technical solution adopted by the present invention to solve the technical problems is: a kind of permanent magnet synchronous motor inductance parameters identification system
System, including current of electric detection calculate link, the three-phase current sampled for inputting motor；Quadrature axis current detection calculates ring
Section, for calculating motor quadrature axis torque current；Sliding moding structure location identification link is distinguished for calculating permanent magnet synchronous motor position
Knowledge value, is linked in sequence by sliding mode observer and phaselocked loop；Angular deviation calculates link, for calculating because of motor inductances parameter
Angu-lar deviation caused by deviation, and be input to inductance deviation and calculate compensation tache；Inductance deviation calculates compensation tache, based on
The deviation for calculating inductance parameters obtains motor inductances parameter true value according to identification angular deviation；The current of electric detection
It calculates link to connect with quadrature axis current detection calculating link, current of electric detection calculates link and connects sliding moding structure location identification
Link, quadrature axis current detection calculate connection inductance deviation after link connection angle drift gage calculates link and calculate compensation tache, simultaneously
Sliding moding structure location identification link connects angle drift gage and calculates link.
Wherein, the angular deviation calculates link can realize the calculating of angular deviation using position sensor.
The second object of the present invention is to provide a kind of permanent magnet synchronous motor inductance parameters real-time online discrimination method, in conjunction with
Link is calculated using sliding moding structure location identification link, angular deviation and inductance deviation compensation calculates link and realizes to motor electricity
Feel the on-line identification of parameter, step are as follows:
A), current of electric detection calculates the three-phase current that link will be sampled from permanent magnet synchronous motor, by converting
To the input of sliding moding structure location identification link, in which:
B), current of electric detection calculates the three-phase current that link will be sampled from permanent magnet synchronous motor, by converting
The input of link is calculated to angular deviation, in which:
C), sliding moding structure location identification link utilizes sliding moding structure according to permanent magnet synchronous motor fundamental frequency mathematical model
Principle obtains motor rotor position identifier；
D), angular deviation calculates link and utilizes perturbation observation method, increases or reduce location identification value, and caused by observation
Quadrature axis torque current absolute value change direction Δ iq, to determine the control strategy of next step；
E), inductance deviation calculates compensation tache and calculates inductance parameters deviation delta L according to location identification deviation delta θS, Jin Erji
Calculate inductance parameters true value
The beneficial effects of the present invention are: obtaining location identification initial value using sliding moding structure location identification algorithm, utilize
Angular deviation calculates the available location identification deviation steady-state value of link, and then according to location identification deviation and inductance parameters deviation
Between relationship obtain inductance compensation value, obtain the real-time inductance parameters of motor, the parameter recycled to carry out position-sensor-free control
System.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Each appended drawing reference are as follows: the detection of 1-current of electric calculates link, and the detection of 2-quadrature axis currents calculates link, 3-sliding formworks
Structure changes location identification link, 4-angular deviations calculate link, and 5-inductance deviations calculate compensation tache；Wherein, LsFor non-school
Positive motor inductances parameter,For the motor inductances parameter after correction.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Shown in referring to Fig.1, as first embodiment, the invention discloses a kind of permanent magnet synchronous motor inductance parameters to exist in real time
Line identification system, the current of electric detection including sequential connection calculate link 1, sample for inputting permanent magnet synchronous motor
Three-phase current；Quadrature axis current detection calculates link 2, for calculating permanent magnet synchronous motor quadrature axis torque current；Sliding moding structure position
Identification link 3 is set, for calculating permanent magnet synchronous motor location identification value；Angular deviation calculates link 4, for calculating because permanent magnetism is same
Walk angular deviation caused by motor inductances parameter error；It further include that inductance deviation calculates compensation tache 5, according to identification angular deviation
Obtain motor inductances parameter true value.
The step of permanent magnet synchronous motor position-sensor-free inductance parameters real-time online discrimination method are as follows:
A), current of electric detection calculates the three-phase current that link 1 will be sampled from permanent magnet synchronous motor, by converting
To the input of sliding moding structure location identification link 3, wherein
B), current of electric detection calculates the three-phase current that link 1 will be sampled from permanent magnet synchronous motor, by converting
The input of link 4 is calculated to angular deviation, wherein
C), sliding moding structure location identification link 3 utilizes sliding moding structure according to permanent magnet synchronous motor fundamental frequency mathematical model
Principle obtains motor rotor position identifier.
D), angular deviation calculates link 4 and utilizes perturbation observation method, increases or reduces location identification value, and observation station draws
The change direction Δ i of the quadrature axis torque current absolute value risenq, to determine the control strategy of next step.
E), inductance deviation calculates compensation tache 5 and calculates inductance parameters deviation delta L according to location identification deviation delta θS, in turn
Calculate inductance parameters true value
As the second embodiment of the present invention, the difference with first embodiment is, the inductance deviation calculates compensation
4 change in location step-length a of link may be configured as and Δ iqRelated linearly or nonlinearly function.
As the third embodiment of the present invention, the difference with first embodiment is, the inductance deviation calculates compensation
4 current change quantity Δ i of linkqElectromagnetic torque variation delta T can be usedemIt indicates.
As the fourth embodiment of the present invention, the difference with first embodiment is, the angular deviation calculates link 4
In, if system, there are position sensor, location identification deviation is availableDirectly calculate.
The above-described embodiments merely illustrate the principles and effects of the present invention, and the embodiment that part uses, for
For those skilled in the art, without departing from the concept of the premise of the invention, can also make it is several deformation and
It improves, these are all within the scope of protection of the present invention.
Claims (3)
1. a kind of permanent magnet synchronous motor inductance parameters identification system, it is characterised in that: including
Current of electric detection calculates link (1), the three-phase current sampled for inputting motor；
Quadrature axis current detection calculates link (2), for calculating motor quadrature axis torque current；
Sliding moding structure location identification link (3) is used for calculating position identifier, is linked in sequence by sliding mode observer and phaselocked loop
It forms；
Angular deviation calculates link (4), angu-lar deviation caused by being used to calculate because of motor inductances parameter error, and is input to electricity
Feel deviation and calculates compensation tache (5)；
Inductance deviation calculates compensation tache (5), and for calculating the deviation of inductance parameters, and then it is true to obtain motor inductances parameter
Value.
2. a kind of permanent magnet synchronous motor inductance parameters identification system according to claim 1, which is characterized in that the angle
It spends deviation and calculates the calculating that link (4) realize angular deviation using position sensor.
3. a kind of permanent magnet synchronous motor inductance parameters real-time online discrimination method is based on permanent magnet synchronous electric described in claim 1
Electromechanics sense parameter identification system, which is characterized in that step are as follows:
A), the three-phase current that calculates link (1) and will sample from permanent magnet synchronous motor is detected by current of electric, by transformation
Obtain the input of sliding moding structure location identification link (3):
；
B), the three-phase current that calculates link (1) and will sample from permanent magnet synchronous motor is detected by current of electric, by transformation
Obtain the input that angular deviation calculates link (4):
；
C), sliding moding structure location identification link (3) utilizes sliding moding structure original according to permanent magnet synchronous motor fundamental frequency mathematical model
Reason obtains motor rotor position identifier；
D), angular deviation calculates link (4) and utilizes perturbation observation method, increases or reduce location identification value, and caused by observation
Quadrature axis torque current absolute value change direction, to determine the control strategy of next step；
E), inductance deviation calculates compensation tache (5) according to location identification deviationCalculate inductance parameters deviation, calculate electricity
Feel parameter true value。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910000020.1A CN109802614B (en) | 2019-01-01 | 2019-01-01 | Permanent magnet synchronous motor inductance parameter identification system and method |
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| CN201910000020.1A CN109802614B (en) | 2019-01-01 | 2019-01-01 | Permanent magnet synchronous motor inductance parameter identification system and method |
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| CN109802614A true CN109802614A (en) | 2019-05-24 |
| CN109802614B CN109802614B (en) | 2020-10-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928963A (en) * | 2021-04-19 | 2021-06-08 | 广东电网有限责任公司电力调度控制中心 | Permanent magnet synchronous generator parameter identification method based on polynomial evolution model |
| CN114389500A (en) * | 2021-03-25 | 2022-04-22 | 南京航空航天大学 | Compensation strategy for maximum current characteristic quantity rotor position error of bearingless sheet motor |
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| US20040051495A1 (en) * | 2002-09-18 | 2004-03-18 | Satoru Kaneko | Position-sensorless motor control method and apparatus |
| WO2014084009A1 (en) * | 2012-11-29 | 2014-06-05 | 富士電機株式会社 | Electric motor control device |
| CN104601069A (en) * | 2014-12-26 | 2015-05-06 | 南车株洲电力机车研究所有限公司 | Method and system for acquiring inductance parameters of permanent magnet synchronizing motor |
| CN108429502A (en) * | 2018-03-16 | 2018-08-21 | 日立电梯（中国）有限公司 | Parameter identification method, the apparatus and system of permanent magnet synchronous motor |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350720A (en) * | 1999-05-19 | 2002-05-22 | Abb工业公司 | Starting procedure of open-loop vactor control in synchronous machine |
| US20040051495A1 (en) * | 2002-09-18 | 2004-03-18 | Satoru Kaneko | Position-sensorless motor control method and apparatus |
| WO2014084009A1 (en) * | 2012-11-29 | 2014-06-05 | 富士電機株式会社 | Electric motor control device |
| CN104601069A (en) * | 2014-12-26 | 2015-05-06 | 南车株洲电力机车研究所有限公司 | Method and system for acquiring inductance parameters of permanent magnet synchronizing motor |
| CN108429502A (en) * | 2018-03-16 | 2018-08-21 | 日立电梯（中国）有限公司 | Parameter identification method, the apparatus and system of permanent magnet synchronous motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114389500A (en) * | 2021-03-25 | 2022-04-22 | 南京航空航天大学 | Compensation strategy for maximum current characteristic quantity rotor position error of bearingless sheet motor |
| CN114389500B (en) * | 2021-03-25 | 2023-11-03 | 南京航空航天大学 | Rotor position error compensation strategy for maximum current characteristic quantity of bearingless sheet motor |
| CN112928963A (en) * | 2021-04-19 | 2021-06-08 | 广东电网有限责任公司电力调度控制中心 | Permanent magnet synchronous generator parameter identification method based on polynomial evolution model |
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