CN103197150A - Determination of synchronous reactance of permanent magnet generator through arbitrary load method - Google Patents
Determination of synchronous reactance of permanent magnet generator through arbitrary load method Download PDFInfo
- Publication number
- CN103197150A CN103197150A CN2013101511974A CN201310151197A CN103197150A CN 103197150 A CN103197150 A CN 103197150A CN 2013101511974 A CN2013101511974 A CN 2013101511974A CN 201310151197 A CN201310151197 A CN 201310151197A CN 103197150 A CN103197150 A CN 103197150A
- Authority
- CN
- China
- Prior art keywords
- load
- synchronous reactance
- magneto
- test
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 238000010998 test method Methods 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 4
- 238000010586 diagram Methods 0.000 abstract 1
- 230000005284 excitation Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
Images
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The invention relates to a test method for determining the synchronous reactance of a permanent magnet generator through an arbitrary load method to achieve the aim of determining the direct-axis synchronous reactance Xd and the quadrature-axis synchronous reactance Xq of the permanent magnet generator. The method comprises the steps of drawing an arbitrary load running vector diagram of the permanent magnet generator; deriving computational formulae of the synchronous reactance Xd and the synchronous reactance Xq; carrying out a test on the stator resistance Ra, a no-load test and an arbitrary load test to finally determine the direct-axis synchronous reactance Xd and the quadrature-axis synchronous reactance Xq of a winding. When the permanent magnet synchronous generator runs, the needed load is an arbitrary load, and when the permanent magnet synchronous generator is operated under the operating condition, the test on the synchronous reactance has universality, real-time performance and pertinence; and besides conventional stator resistance Ra and no-load tests, the determination of the synchronous reactance of the permanent magnet generator through the arbitrary load method does not need other complex auxiliary tests, so that the test is simple and convenient and strong in operability.
Description
Technical field
The present invention relates to a kind ofly determine the method for testing of magneto synchronous reactance by the arbitrary load method,
Background technology
Magneto alternator is one of most important equipment in the wind-powered electricity generation unit, the magneto synchronous reactance is to generator stable operation analysis, fault analysis and safeguard and overhaul all have vital role, simultaneously, the magneto synchronous reactance is to set up the magneto mathematical model, carries out prerequisite and the basis of computer control and analysis.
Because the excitation of magneto is constant, different with the type of conventional generator, the method for analyzing and testing its synchronous reactance has certain degree of difficulty, does not also have the method for testing at the magneto synchronous reactance at present.
Summary of the invention
The objective of the invention is to set up the method for testing of determining the magneto synchronous reactance by the arbitrary load method, by this method of testing, reach the purpose of determining magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq.Technical scheme of the present invention is: adopt the operation of magneto arbitrary load, determine magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, magneto alternator arbitrary load operation equation:
X
d＝（E
0－U·cosθ－I·cos(θ＋φ)·R
a）／I·sin(θ＋φ)（1）X
q＝（U·sinθ＋I·sin(θ＋φ)·R
a）／I·cos(θ＋φ) （2）
In the formula:
I-magneto stator current;
U-terminal voltage;
E0-no-load emf;
Ra-stator resistance;
φ-power-factor angle;
θ-merit angle;
Id-direct-axis current;
Iq-friendship shaft current,
Magneto stator current I, terminal voltage U, no-load emf E0, stator resistance Ra, power-factor angle φ, merit angle θ when measuring load calculate stable state parameter d-axis and quadrature axis synchronous reactance Xd and Xq value by (1) formula and (2) formula; When changing magneto load big or small, can obtain the relation curve of electric current I and d-axis and quadrature axis synchronous reactance Xd and Xq, namely obtain the corresponding d-axis of different loads electric current I and quadrature axis synchronous reactance Xd and Xq value;
Step 1, carry out the test of stator resistance Ra: stator resistance Ra is one of inscape of magneto vector plot, tests out its phase resistance, and carries out suitable correction according to temperature, so that when synchronous reactance is calculated, considers the influence of stator resistance;
Step 2, the no-load test of carrying out: test no-load characteristic, no-load emf E
0Just
The beginning position angle: magneto under different rotating speeds, its no-load emf difference, synchronously
Anti-also change thereupon, the merit angle when determining load, must at first test unloaded down initially
Position angle, i.e. angle between unloaded next phase voltage and the rotor-position;
Step 3, carry out arbitrary load test: magneto stator current when measuring load
I, terminal voltage U, power-factor angle φ, merit angle θ determine that the magneto d-axis together
Step reactance Xd and quadrature axis synchronous reactance Xq;
Step 4, according to above method of testing, obtain each computing parameter, utilize formula (1), formula (2), determine winding direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq.
During the magneto alternator operation, institute's bringing onto load is generally arbitrary load, under this operating condition, move, carry out the synchronous reactance test and have versatility, real-time and specific aim, except carrying out conventional stator resistance Ra, no-load test, the arbitrary load method determines that the magneto synchronous reactance needn't carry out other complicated ancillary tests again, tests simple and convenient, workable.
Description of drawings
Fig. 1: magneto arbitrary load operation vector plot,
Embodiment
As shown in Figure 1, be magneto arbitrary load operation vector plot, the magneto excitation produces magnetic field by fixing magnet steel, if its rotating speed is constant, it is constant that excitation produces magnetic induction electromotive force size, according to this characteristic, and the operation vector plot of magneto when drawing load.
The vector plot of magneto during based on the three-phase steady-state short-circuit is set up a kind of method of testing of determining the magneto synchronous reactance by the arbitrary load method.Magneto stator current I, terminal voltage U, no-load emf E0, stator resistance Ra, power-factor angle φ, merit angle θ when measuring load, final definite magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, magneto alternator arbitrary load operation equation is:
X
d＝（E
0－U·cosθ－I·cos(θ＋φ)·R
a）／I·sin(θ＋φ)（1）X
q＝（U·sinθ＋I·sin(θ＋φ)·R
a）／I·cos(θ＋φ) （2）
In the formula:
I-magneto stator current;
U-terminal voltage;
E0-no-load emf;
Ra-stator resistance;
φ-power-factor angle;
θ-merit angle;
Id-direct-axis current;
Iq-friendship shaft current,
By the arbitrary load test of magneto, to measure stator current I, terminal voltage U, no-load emf E0, stator resistance Ra, power-factor angle φ, merit angle θ, and finally determine stable state parameter d-axis and quadrature axis synchronous reactance Xd and Xq value, concrete steps are as follows:
Step 1, carry out the test of stator resistance Ra: stator resistance Ra is one of inscape of magneto vector plot, tests out its phase resistance, and carries out suitable correction according to temperature, so that when synchronous reactance is calculated, considers the influence of stator resistance; Minitype permanent magnetism generator unit stator direct current resistance is bigger, when testing and calculating, must consider the influence of stator direct current resistance, just can accurately determine synchronous reactance.
Step 2, the no-load test of carrying out: test no-load characteristic, no-load emf E
0And initial position angle; The magneto no-load curve is the relation curve of rotating speed and no-load voltage, and it is straight line, has directly reacted the size that different rotating speeds lower magnetic steel magnetic pole produces electromotive force, synchronous reactance determine to depend on no-load curve; Magneto is under different rotating speeds, and its no-load emf difference, synchronous reactance also change thereupon, and the initial position angle under the zero load must be at first tested at the merit angle when determining load, i.e. angle between unloaded next phase voltage and the rotor-position;
Step 3, carry out arbitrary load test: magneto stator current I, terminal voltage U, power-factor angle φ, merit angle θ when measuring load, utilize measuring accuracy to be higher than 0.5 grade electric quantity test instrument, can directly test stator current I, terminal voltage U, power-factor angle φ.Merit angle θ is angle poor of two tests, i.e. initial position angle under a phase voltage of testing during load and the zero load of the angle between the rotor-position and test (angle between unloaded same phase voltage down and the rotor-position) poor.
Step 4, according to above method of testing, obtain each computing parameter, utilize formula (1), formula (2), determine winding direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq.
Claims (1)
1. method of testing of determining the magneto synchronous reactance by the arbitrary load method, it is characterized in that: adopt the operation of magneto arbitrary load, determine magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq, magneto alternator arbitrary load operation equation:
X
d＝（E
0－U·cosθ－I·cos(θ＋φ)·R
a）／I·sin(θ＋φ)（1）X
q＝（U·sinθ＋I·sin(θ＋φ)·R
a）／I·cos(θ＋φ) （2）
In the formula:
I-magneto stator current;
U-terminal voltage;
E0-no-load emf;
Ra-stator resistance;
φ-power-factor angle;
θ-merit angle;
Id-direct-axis current;
Iq-friendship shaft current,
Magneto stator current I, terminal voltage U, no-load emf E0, stator resistance Ra, power-factor angle φ, merit angle θ when measuring load calculate stable state parameter d-axis and quadrature axis synchronous reactance Xd and Xq value by (1) formula and (2) formula; When changing magneto load big or small, can obtain the relation curve of electric current I and d-axis and quadrature axis synchronous reactance Xd and Xq, namely obtain the corresponding d-axis of different loads electric current I and quadrature axis synchronous reactance Xd and Xq value, concrete steps are as follows:
Step 1, carry out the test of stator resistance Ra: stator resistance Ra is one of inscape of magneto vector plot, tests out its phase resistance, and carries out suitable correction according to temperature, so that when synchronous reactance is calculated, considers the influence of stator resistance;
Step 2, the no-load test of carrying out: test no-load characteristic, no-load emf E
0And initial position angle.Magneto is under different rotating speeds, and its no-load emf difference, synchronous reactance also change thereupon, and the initial position angle under the zero load must be at first tested at the merit angle when determining load, i.e. angle between unloaded next phase voltage and the rotor-position;
Step 3, carry out arbitrary load test: magneto stator current I, terminal voltage U, power-factor angle φ, merit angle θ when measuring load, determine magneto direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq;
Step 4, according to above method of testing, obtain each computing parameter, utilize formula (1), formula (2), determine winding direct-axis synchronous reactance Xd and quadrature axis synchronous reactance Xq.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101511974A CN103197150A (en) | 2013-04-27 | 2013-04-27 | Determination of synchronous reactance of permanent magnet generator through arbitrary load method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101511974A CN103197150A (en) | 2013-04-27 | 2013-04-27 | Determination of synchronous reactance of permanent magnet generator through arbitrary load method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103197150A true CN103197150A (en) | 2013-07-10 |
Family
ID=48719835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101511974A Pending CN103197150A (en) | 2013-04-27 | 2013-04-27 | Determination of synchronous reactance of permanent magnet generator through arbitrary load method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103197150A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6300776B1 (en) * | 1997-12-10 | 2001-10-09 | Endress + Hauser Gmbh + Co. | Method and device for discrete-time reactance measurement |
| 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 |
| CN101699300A (en) * | 2009-10-28 | 2010-04-28 | 上海电器科学研究所（集团）有限公司 | Method for testing direct axis reactance of built-in permanent magnet synchronous motor |
| CN101957884A (en) * | 2010-03-01 | 2011-01-26 | 南京航空航天大学 | Modeling method of power generating system of mixed excited synchronous motor |
| CN102495287A (en) * | 2011-11-30 | 2012-06-13 | 徐州中矿大传动与自动化有限公司 | Measurement method based on quadrature axis reactance measurement device of permanent-magnet synchronous motor |
-
2013
- 2013-04-27 CN CN2013101511974A patent/CN103197150A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6300776B1 (en) * | 1997-12-10 | 2001-10-09 | Endress + Hauser Gmbh + Co. | Method and device for discrete-time reactance measurement |
| 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 |
| CN101699300A (en) * | 2009-10-28 | 2010-04-28 | 上海电器科学研究所（集团）有限公司 | Method for testing direct axis reactance of built-in permanent magnet synchronous motor |
| CN101957884A (en) * | 2010-03-01 | 2011-01-26 | 南京航空航天大学 | Modeling method of power generating system of mixed excited synchronous motor |
| CN102495287A (en) * | 2011-11-30 | 2012-06-13 | 徐州中矿大传动与自动化有限公司 | Measurement method based on quadrature axis reactance measurement device of permanent-magnet synchronous motor |
Non-Patent Citations (2)
| Title |
|---|
| 张卓然 等: "混合励磁同步电机电抗计算与建模", 《南京航空航天大学学报》 * |
| 李春艳: "高凸极率永磁同步发电机电抗参数计算与测试", 《黑龙江大学工程学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103018577B (en) | Method for measuring parameters of permanent magnet synchronous motor | |
| CN102594250A (en) | Maximum torque per ampere vector control system and control method for position sensor-free internal permanent magnet synchronous motor | |
| CN103208965A (en) | Method for identifying asynchronous motor parameters offline under stationary state | |
| CN101650390B (en) | On-line measurement method of stator inductance parameters of surface type AC permanent magnet synchronous motor | |
| CN101261294A (en) | A device and method for measuring inductance parameters of a permanent magnet motor | |
| CN107656203B (en) | A method for detecting loss-of-excitation faults of permanent magnet synchronous generators | |
| CN104655339A (en) | Cogging-torque test method for alternating-current permanent-magnet synchronous servo motor | |
| Dlamini et al. | A non-intrusive method for estimating motor efficiency using vibration signature analysis | |
| CN102495287B (en) | A measurement method based on a permanent magnet synchronous motor quadrature axis reactance measurement device | |
| CN106788061A (en) | A kind of permagnetic synchronous motor rotary inertia recognition methods based on depression of order electric current loop | |
| CN101413974A (en) | Method for testing reactance parameter of surface type permanent magnet synchronous motor | |
| CN107919831B (en) | A kind of rotor position detecting method of the flywheel energy storage system based on Identifying Dynamical Parameters | |
| JP4207810B2 (en) | PM motor evaluation test equipment | |
| CN102170262B (en) | Non-speed sensor control method of direct-drive permanent-magnet synchronous wind turbine | |
| CN103217583A (en) | Testing method of confirming synchronous reactance of permanent magnet generator through electric reactor | |
| CN110383671B (en) | Method and device for determining direct axis inductance and quadrature axis inductance of motor | |
| CN103278689A (en) | Test method for determining synchronous reactance of permanent magnet generator by steady-state short-circuit method | |
| CN106526333B (en) | A method of obtaining permanent magnet synchronous motor quadrature axis and d-axis inductance | |
| CN106877768B (en) | Multi-phase permanent motor rotor-position discrimination method | |
| Chen et al. | A new approach to real time measurement of power angles of generators at different locations for stability control | |
| WO2025007617A1 (en) | Method for measuring and calculating inductance of permanent magnet synchronous motor, and test bench, computer and storage medium | |
| CN103197150A (en) | Determination of synchronous reactance of permanent magnet generator through arbitrary load method | |
| CN103235187A (en) | Testing method for determining synchronous reactance of permanent magnet generator through resistivity method | |
| JP2009027799A (en) | Cylindrical synchronous motor system, method for detecting magnetic pole position of cylindrical synchronous motor, and driving method thereof | |
| Klingshirn | DC Standstill Torque Used to Measire Lq of Reluctance and Synchronous Machines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |