CN105242117B - A kind of permanent magnet synchronous motor d-axis inductance and quadrature axis inductance test method - Google Patents
A kind of permanent magnet synchronous motor d-axis inductance and quadrature axis inductance test method Download PDFInfo
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- CN105242117B CN105242117B CN201510583522.3A CN201510583522A CN105242117B CN 105242117 B CN105242117 B CN 105242117B CN 201510583522 A CN201510583522 A CN 201510583522A CN 105242117 B CN105242117 B CN 105242117B
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- axis inductance
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Abstract
A kind of permanent magnet synchronous motor direct-axis synchronous inductance and quadrature axis synchronous inductance test method.Test device mainly by prime mover of Frequency Converter Control, is tested permanent magnet synchronous motor, three-phase symmetrical resistive load composition.Prime mover is connected by shaft coupling with tested permanent magnet synchronous motor, and control change-over switch causes permanent magnet synchronous motor to realize no-load running and with the conversion between resistive load operation.Generator operation is made by prime mover dragging permanent magnet synchronous motor during the test, according to no-load test and can be in the hope of the d-axis inductance of permanent magnet synchronous motor and quadrature axis inductance with the obtained relevant parameter of experiment is carried.
Description
Technical field：
According to the present invention is a kind of permanent magnet synchronous motor d-axis inductance and quadrature axis inductance test method, and it is same to belong to permanent magnetism
Walk parameter of electric machine acquiring method field.
Background technology：
With Power Electronic Technique, the development of design of electrical motor technology and rare earth permanent-magnetic material, permanent magnet synchronous motor is because of it
Simple in structure, reliable, small, light weight, loss is small, efficient, and it is all that motor shape and size can be versatile and flexible etc.
More features, in aerospace, national defence, the every field such as industrial and agricultural production and daily life are using extremely wide.To by permanent magnetism
The research of the governing system of synchronous motor composition is also increasingly extensive and gos deep into.First have to solve in the course of the study is motor
Parameter asks for problem, because all analyses all must be as premise.The well known analysis for permanent magnet synchronous motor system
It primarily rests under dq rotating coordinate systems, d-axis inductance and quadrature axis inductance are very crucial parameters in the parameter of electric machine, at present
The detection method known includes numerical method and experimental method.Wherein numerical method requires to know electromagnetism ginseng detailed inside motor
Number and mechanical configuration parameter, however, this can not meet in most cases.Traditional experimental method is due to permanent magnet magnetic
The influence of field and additional power source excitation to air-gap field so that test process is complicated, and precision is not high.
Invention content：
Goal of the invention：Overcome the complexity and forever of existing permanent magnet synchronous motor d-axis inductance and quadrature axis inductance detection method
Magnets magnetic fields and additional power source encourage the influence to air-gap field.
The technical solution adopted by the present invention to solve the technical problems is：Tested motor passes through shaft coupling and prime mover phase
Even, the tested motor of prime mover dragging is to rated speed, and tested motor operation is made to pass through switching switch control in Generator Status
The tested motor of system realizes zero load and with the switching carried between different operational modes.By prime mover dragging motor no-load running, survey
Obtain the rated no-load back-emf of motor.By the band three-phase symmetrical purely resistive load operation of prime mover dragging motor, measure identical
Current of electric under speed conditions during different resistive loads.During by the empty load of motor back-emf of actual measurement and with different resistive loads
Current of electric, obtain the tested direct-axis synchronous inductance of motor and quadrature axis synchronous inductance with reference to motor operation phasor diagram.
The beneficial effects of the invention are as follows：Make full use of permanent-magnetism synchronous motor permanent magnetic body magnetic field ask for motor d-axis inductance and
Quadrature axis inductance eliminates additional power supply excitation, it is only necessary to which ohmic load can easily detect permanent magnet synchronous motor
D-axis inductance and quadrature axis inductance parameters, apparatus structure is simple, and test method is convenient.
Description of the drawings：
Fig. 1 is the system the Nomenclature Composition and Structure of Complexes block diagram of the present invention.
Fig. 2 be the embodiment of the present invention with three-phase symmetrical resistive load when voltage phasor-diagram.
Label 1. is by prime mover of Frequency Converter Control, 2. shaft couplings, 3. tested permanent magnet synchronous motors, 4. conversions in Fig. 1
Switch, 5. three-phase symmetrical ohmic loads.
Designation in Fig. 2：The respectively direct-axis component of permanent-magnetic synchronous motor stator electric current, quadrature axis component
And stator current phasor, Xd, Xq,Respectively permanent magnet synchronous motor direct-axis synchronous reactance, quadrature axis synchronous reactance and synchronization
Reactance phasor, R,Respectively one phase winding loop resistance resistance value of permanent-magnetic synchronous motor stator and no-load back electromotive force.Wherein R
=(Rs+RL), RsFor one phase winding resistance of permanent-magnetic synchronous motor stator, RLResistance value is loaded for an added phase resistance.
Specific embodiment：
In Fig. 1, it is connected by prime mover of Frequency Converter Control 1 by shaft coupling 2 with tested permanent magnet synchronous motor 3, is surveyed
Tested permanent magnet synchronous motor 3 is dragged by prime mover 1 during examination and reaches rated speed, it is made to make generator operation.Pass through control
Change-over switch 4 processed realizes that tested permanent magnet synchronous motor 3 switches in no-load running and between running with resistive load.For three-phase
Synistor loads (5), and due to needing to run during the test with different ohmic loads, the minimum value per phase resistance is by being tested
The rated voltage and rated current for trying permanent magnet synchronous motor 3 determine.
Implementation process of the present invention is described as follows with reference to Fig. 2：
Control change-over switch 4 runs empty load of motor, by prime mover 1 by shaft coupling 2 by tested permanent magnet synchronous motor 3
Rated speed is dragged to, permanent magnet synchronous motor angular rate is ω to note at this time0, corresponding frequency is f0, measure empty load of motor at this time
Electromotive force isControl change-over switch 4 makes motor be run in rated speed lower band three-phase symmetrical ohmic load 5, and note is at this time per phase
Resistance value is RL1, permanent-magnetic synchronous motor stator electric current isThere is following relational expression according to fig. 2：
Have after above formula is unfolded：
According to what is measuredRs, RL1It can obtain following equation：
Change the resistance value of three-phase symmetrical ohmic load (5), note is at this time R per phase resistance valueL2, repeat aforementioned strip and carried
Journey, permanent-magnetic synchronous motor stator electric current is note at this timeFollowing equation can similarly be obtained：
Equation under simultaneous difference resistive load condition can obtain tested permanent magnet synchronous motor (3) direct-axis synchronous reactance
And quadrature axis synchronous reactance.According to obtained direct-axis synchronous reactance and quadrature axis synchronous reactance, it is tested permanent magnet synchronous motor (3) d-axis
Inductance and quadrature axis inductance are as follows：
Claims (1)
1. a kind of permanent magnet synchronous motor d-axis inductance and quadrature axis inductance test method, it is characterised in that：By tested permanent-magnet synchronous
Motor carries out zero load and the operation of two sub-band three-phase symmetrical ohmic loads under rated speed, root respectively under generator service condition
According to equation groupObtain permanent magnet synchronous motor d-axis inductance LdWith quadrature axis inductance Lq, wherein
Xd、XqRespectively permanent magnet synchronous motor direct-axis synchronous reactance and quadrature axis synchronous reactance, E0It is unloaded anti-electronic for permanent magnet synchronous motor
Gesture, RsFor one phase winding resistance of permanent-magnetic synchronous motor stator, RL1、RL2Respectively twice in the three-phase symmetrical ohmic load of institute's band
One phase resistance loads resistance value, I1、I2To correspond to RL1、RL2Permanent-magnetic synchronous motor stator electric current,
ω0For permanent magnet synchronous motor angular rate.
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| CN201510583522.3A CN105242117B (en) | 2015-09-14 | 2015-09-14 | A kind of permanent magnet synchronous motor d-axis inductance and quadrature axis inductance test method |
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| CN201510583522.3A CN105242117B (en) | 2015-09-14 | 2015-09-14 | A kind of permanent magnet synchronous motor d-axis inductance and quadrature axis inductance test method |
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| CN105242117B true CN105242117B (en) | 2018-06-19 |
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| CN106526333B (en) * | 2016-11-03 | 2019-08-13 | 四川长虹电器股份有限公司 | A method of obtaining permanent magnet synchronous motor quadrature axis and d-axis inductance |
| CN108365790A (en) * | 2018-03-16 | 2018-08-03 | 顺丰科技有限公司 | Unmanned plane motor d-axis and q-axis inductance measurement method, device, equipment and storage medium |
| CN109633443B (en) * | 2018-12-28 | 2020-05-19 | 华中科技大学 | Method suitable for measuring no-load characteristic of self-excitation large synchronous motor |
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| FI114356B (en) * | 2002-12-03 | 2004-09-30 | Abb Oy | Method for determining the transverse excitation inductance of a synchronous machine |
| CN101413974A (en) * | 2008-08-27 | 2009-04-22 | 上海电科电机科技有限公司 | Method for testing reactance parameter of surface type permanent magnet synchronous motor |
| CN103217583A (en) * | 2013-04-27 | 2013-07-24 | 哈尔滨电机厂有限责任公司 | Testing method of confirming synchronous reactance of permanent magnet generator through electric reactor |
| CN103472394B (en) * | 2013-09-29 | 2015-09-09 | 哈尔滨工业大学 | AC magnetoelectric machine mechanical characteristic test method |
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