CN103869245A - Magnetic co-energy correction-based switched reluctance motor (SRM) flux linkage curve test method and device - Google Patents
Magnetic co-energy correction-based switched reluctance motor (SRM) flux linkage curve test method and device Download PDFInfo
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Abstract
The invention discloses a magnetic co-energy correction-based switched reluctance motor (SRM) flux linkage curve test method and device. The currently used test equipment has the conditions that the test is complex, the test result is not accurate, the flux linkage online test, field test and mass production product test are unavailable, and the like. The magnetic co-energy correction-based SRM flux linkage curve test device comprises an adjustable direct-current regulated power supply (1), wherein the adjustable direct-current regulated power supply is connected with an SRM drive (2); the SRM drive is respectively connected with a three phase SRM (3) and a CAN (Controller Area Network) analyzer (4); the CAN analyzer is connected with a PC (Personal Computer) (5). The magnetic co-energy correction-based SRM flux linkage curve test method and device are suitable for the flux linkage online test, field test and mass production product test without locking the motor rotor position.
Description
technical field:
the present invention relates to a kind of switched reluctance motor flux linkage curve test method and the device that can revise altogether based on magnetic.
background technology:
switched reluctance machines (Switched Reluctance Motor is called for short SRM) is double-salient-pole variable reluctance motor.The salient pole of its stator and rotor is formed by stacking by ordinary silicon steel disc.Rotor both without winding also without permanent magnet, in stator poles, be wound with concentrated winding, radially relative two windings in series form the two poles of the earth magnetic pole, are called " phase ".The motion of SRM is to be produced by the variation of air-gap reluctance between stator and rotor.Based on the feature of SRM, simple in structure, firm and control convenience that switched reluctance motor has, and there is wider rotating speed and power regulating range, be widely used in drawing the every field such as transport, universal industrial, aviation, household electrical appliance, become one of popular research topic of contemporary Electrified Transmission.The flux linkage characteristic of switched reluctance machines is the prerequisite that Motor Optimizing Design, model are set up and operation is controlled, but the double-salient-pole structure that it is special and the height saturability of magnetic circuit, make Distribution of Magnetic Field complexity, have the situations such as significant edge effect, eddy effect and serious part be saturated.It can not use a two dimension as traditional AC and DC motor
magnetic linkage curve just can be described motor characteristic, and it needs the three-dimensional under one group of different rotor position
its characteristic could be described by magnetic linkage family of curves, and the accuracy calculated of motor performance depends on the accuracy of three-dimensional magnetic linkage family of curves.Existing comparatively feasible magnetic linkage curve acquisition method has experiment test method and limited element analysis technique.
experiment test method is generally by design test circuit, and the voltage, the current information that test out on motor winding carry out magnetic linkage indirect calculation.Experiment test method is simple, convenient test, result are accurate, but needs locked rotor position, and test process is loaded down with trivial details time-consuming, is not suitable for the situations such as magnetic linkage on-line testing, on-the-spot test and mass production of products test.
limited element analysis technique is to adopt finite element analysis software to carry out static analysis to motor-field to calculate to ask for magnetic linkage curve under different rotor position.Two-dimensional finite meta analysis method comparative maturity, is widely used, but because ignoring the magnetic field effect of end, causes specific location error larger.Although three-dimensional finite element method has been considered the various factors of motor, has improved accuracy comprehensively, calculate too consuming time loaded down with trivial detailsly, and very high to computer hardware environmental requirement, be not widely used.
the testing apparatus of use test is at present loaded down with trivial details, test result is inaccurate, is not suitable for the situations such as magnetic linkage on-line testing, on-the-spot test and mass production of products test.
summary of the invention:
the object of this invention is to provide a kind of switched reluctance motor flux linkage curve test method and the device that can revise altogether based on magnetic.
above-mentioned object realizes by following technical scheme:
a kind of switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic, its composition comprises: direct current adjustable stabilized voltage supply, described direct current adjustable stabilized voltage supply is connected with switch reluctance machine drive, described switch reluctance machine drive is connected with threephase switch reluctance motor, CAN analyser respectively, and described CAN analyser is connected with PC.
the described switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic, described switch reluctance machine drive comprises housing, described enclosure interior is provided with dsp controller, described dsp controller and IGBT driving circuit, analog to digital converter connects, described IGBT driving circuit is connected with winding, described winding respectively with voltage sensor, current sensor connects, described voltage sensor, described current sensor is connected with described analog to digital converter respectively, in described dsp controller, there is CAN interface, described CAN interface is connected with described CAN analyser.
the described switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic, the model of described dsp controller is TMS320F2812, the model of described current sensor is LT 58-S7/SP, the model of described voltage sensor is CLSM-10MA, and described analog to digital converter adopts 12 high-speed synchronous data acquiring chip AD7864.
the described switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic, described threephase switch reluctance motor is three-phase 12/8 switched reluctance machines.
a method of testing of utilizing the described switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic of one of claim 1-4, the method comprises the steps:
(1) use two-dimensional finite element method to obtain switched reluctance motor flux linkage calculated curve by PC;
(2) in alignment place of motor stator and rotor salient pole center line, without locked rotor position, measure alignment phase by single-phase excitation
position magnetic linkage curve, then by two-phase excitation and introduce coefficient of mutual inductance M and accurately obtain adjacent phase
position magnetic linkage curve;
(3), according to two magnetic linkage curves of actual measurement, can revise altogether former reason PC according to magnetic and calculate magnetic linkage correction factor, and two-dimensional finite unit calculated curve is revised, thereby obtain three-dimensional accurately
magnetic linkage family of curves;
wherein:
for the angle of alignment phase stator salient poles center line and adjacent rotor groove center line,
for the angle of homonymy adjacent phase stator salient poles center line and this rotor slot center line.
the method of testing of the described switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic, described to revise altogether principle calculating magnetic linkage correction factor according to magnetic be by the phase of aliging
with adjacent phase
the magnetic that position is surveyed is energy altogether
magnetic energy altogether with FEM (finite element) calculation gained
, obtain respectively alignment phase according to formula 1
with adjacent phase
position magnetic altogether can correction factor
,
, wherein, formula 1 is
;
according to required
,
, obtain the magnetic linkage correction factor that is total to energy under Difference angles based on magnetic by formula 2, wherein, formula 2 is
, and COEFFICIENT K is
.
the described switched reluctance motor flux linkage curve test method that can revise altogether based on magnetic, described again by two-phase excitation and introduce coefficient of mutual inductance M and accurately obtain adjacent phase
position magnetic linkage curve, described introducing coefficient of mutual inductance M carrys out the difference of magnetic linkage under quantitative description two-phase incentive mode and single-phase incentive mode, thereby accurately obtains adjacent phase
position magnetic linkage curve; If two-phase is switched on simultaneously, the magnetic linkage of measuring is
, by formula
magnetic linkage value is proofreaied and correct.
beneficial effect:
1. direct current adjustable stabilized voltage supply of the present invention provides test voltage, in order to meet the requirement of motor peak point current, selects German EA power supply ps9300-75.Asymmetry half-bridge circuit is made up of IGBT and fast recovery diode, is driven to winding and is applied voltage by IGBT driving circuit by the I/O mouth of DSP.Current sensor (LT 58-S7/SP) and voltage sensor (CLSM-10MA) are for detection of winding current and winding voltage.Analog to digital converter is selected 12 high-speed synchronous data acquiring chip AD7864.Voltage, current data that AD7864 gathers are read in DSP, give PC complete the three-dimensional magnetic linkage of the SRM family of curves calculating that can revise altogether principle based on magnetic by CAN interface and CAN analyser.Because this device is without locked rotor position, greatly simplify proving installation.
the inventive method is directly measured two magnetic linkage curves without lock out motor rotor-position, can revise altogether principle correction FEM (finite element) calculation curve, Obtaining Accurate switched reluctance motor flux linkage family of curves by magnetic; Not only can, in motor stator and rotor salient pole center line aligned position, without locked rotor position, obtain fast alignment phase
with adjacent phase
position magnetic linkage curve, and combine with two-dimensional finite element method, by the compensation to end magnetic field effect, can obtain SRM flux linkage characteristic accurately, for optimal design, model foundation and the controlling run of switched reluctance machines provide foundation.
the same model switched reluctance machines that the inventive method has been determined for performance, structural parameters and production technology, the difference of flux linkage characteristic is mainly to be caused by magnetic material, processing and rigging error, can carry out on-the-spot test and correction by the inventive method.
the switched reluctance machines using in the inventive method commercial production, after long-play, due to wearing and tearing, the reason such as aging, flux linkage characteristic also can change, and adopts the inventive method also can carry out on-line testing and correction.
the inventive method is applicable to the situations such as magnetic linkage on-line testing, on-the-spot test and mass production of products test.
brief description of the drawings:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is circuit theory diagrams of the present invention.
accompanying drawing 3 is machine structure of the present invention and rotor position angle schematic diagram.
accompanying drawing 4 is even natural subdivision graphs of the present invention.
accompanying drawing 5 is local subdivision graphs of amplifying of the present invention.
accompanying drawing 6 is 0 degree stator poles and rotor slot aligned position magnetic line of force distribution plans of the present invention.
accompanying drawing 7 is 22.5 degree stator poles and rotor pole aligned position magnetic line of force distribution plans of the present invention.
accompanying drawing 8 is 7.5 degree stator poles and rotor pole non-overlapping position magnetic line of force distribution plans of the present invention.
accompanying drawing 9 is 15 degree stator poles and rotor slot aligned position magnetic line of force distribution plans of the present invention.
accompanying drawing 10 is 22.5 degree stator poles and rotor pole aligned position magnetic flux distribution figure of the present invention.
accompanying drawing 11 is 7.5 degree stator poles and rotor slot aligned position magnetic flux distribution figure of the present invention.
accompanying drawing 12 is 0 degree stator poles and rotor pole aligned position magnetic flux distribution figure of the present invention.
accompanying drawing 13 is 15 degree stator poles and rotor slot aligned position magnetic flux distribution figure of the present invention.
accompanying drawing 14 is magnetic linkage-electric current of the present invention-angle 2D calculated curve figure.
accompanying drawing 15 is magnetic linkage-electric current of the present invention-angle 3D calculated curve figure.
accompanying drawing 16 is of the present invention
magnetic linkage curve arithmetic mean is processed rear test result figure.
accompanying drawing 17 is of the present invention based on the revised three-dimensional of magnetic function
the figure of magnetic linkage family of curves.
accompanying drawing 18 is magnetic linkage curves and the front comparison diagram of correction after magnetic of the present invention can be revised altogether.
embodiment:
embodiment 1:
a kind of switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic, its composition comprises: direct current adjustable stabilized voltage supply 1, described direct current adjustable stabilized voltage supply is connected with switch reluctance machine drive 2, described switch reluctance machine drive is connected with threephase switch reluctance motor 3, CAN analyser 4 respectively, described CAN analyser is connected with PC 5, and described PC completes switched reluctance machines can revise the three-dimensional of principle altogether based on magnetic
magnetic linkage family of curves is calculated.
embodiment 2:
according to the switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic described in embodiment 1, described switch reluctance machine drive comprises housing, described enclosure interior is provided with dsp controller 6, described dsp controller and IGBT driving circuit 7, analog to digital converter 8 connects, described IGBT driving circuit is connected with winding 9, described winding respectively with voltage sensor 10, current sensor 11 connects, described voltage sensor, described current sensor is connected with described analog to digital converter respectively, in described dsp controller, there is CAN interface 12, described CAN interface is connected with described CAN analyser.
embodiment 3:
according to the switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic described in embodiment 1 or 2, the model of described dsp controller is TMS320F2812, the model of described current sensor is LT 58-S7/SP, the model of described voltage sensor is CLSM-10MA, and described analog to digital converter adopts 12 high-speed synchronous data acquiring chip AD7864.
embodiment 4:
according to the switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic described in embodiment 1, described threephase switch reluctance motor is three-phase 12/8 switched reluctance machines.
embodiment 5:
a method of testing of utilizing the described switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic of one of claim 1-4, the method comprises the steps:
(1) use two-dimensional finite element method to obtain switched reluctance motor flux linkage calculated curve by PC;
(2) in alignment place of motor stator and rotor salient pole center line, without locked rotor position, measure alignment phase by single-phase excitation
position magnetic linkage curve, then by two-phase excitation and introduce coefficient of mutual inductance M and accurately obtain adjacent phase
position magnetic linkage curve;
(3), according to two magnetic linkage curves of actual measurement, can revise altogether former reason PC according to magnetic and calculate magnetic linkage correction factor, and two-dimensional finite unit calculated curve is revised, thereby obtain three-dimensional accurately
magnetic linkage family of curves;
wherein:
for the angle of alignment phase stator salient poles center line and adjacent rotor groove center line,
for the angle of homonymy adjacent phase stator salient poles center line and this rotor slot center line.
embodiment 6:
according to the method for testing of the switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic described in embodiment 5, described to revise altogether principle calculating magnetic linkage correction factor according to magnetic be by the phase of aliging
with adjacent phase
the magnetic that position is surveyed is energy altogether
magnetic energy altogether with FEM (finite element) calculation gained
, obtain respectively alignment phase according to formula 1
with adjacent phase
position magnetic altogether can correction factor
,
, wherein, formula 1 is
;
according to required
,
, obtain the magnetic linkage correction factor that is total to energy under Difference angles based on magnetic by formula 2, wherein, formula 2 is
, and COEFFICIENT K is
.
embodiment 7:
according to the switched reluctance motor flux linkage curve test method that can revise altogether based on magnetic described in embodiment 5 or 6, described passing through two-phase excitation and introduce coefficient of mutual inductance M accurately obtains adjacent phase
position magnetic linkage curve, described introducing coefficient of mutual inductance M carrys out the difference of magnetic linkage under quantitative description two-phase incentive mode and single-phase incentive mode, thereby accurately obtains adjacent phase
position magnetic linkage curve; If two-phase is switched on simultaneously, the magnetic linkage of measuring is
, by formula
magnetic linkage value is proofreaied and correct.
embodiment 8:
the described switched reluctance motor flux linkage curve test method that can revise altogether based on magnetic, combines two-dimensional finite element method and experiment test method, and introduces that coefficient of mutual inductance is proofreaied and correct and magnetic can be revised altogether, thus acquisition three-dimensional accurately
magnetic linkage family of curves.
the finite element analysis of two-dimensional static electromagnetic property
the present invention is by using ANSOFT MAXWELL2D finite element analysis software to analyze the Distribution of Magnetic Field of switched reluctance machines, to obtain flux linkage calculation curve.
according to SRM actual conditions, select suitable mesh generation, guaranteeing counting accuracy when, reduce computing time as far as possible.As shown in Figure 4, Figure 5, closeer at air gap place subdivision in this model, relatively sparse at other local subdivision, can ensure like this computational accuracy, also reduce computing time simultaneously.Obtain thus flux linkage calculation curve as shown in figure 14.
without the flux linkage characteristic test and correction fast of motor rotor position locking
for threephase switch reluctance motor, due to the symmetry of SRM structure, when one during in motor stator and rotor salient pole center line aligned position, two-phase line centered by aligned position distributes in symmetria bilateralis in addition.Because the level of torque equal direction at distance center line same position place is contrary, if switch on to adjacent two-phase simultaneously, the total torque of motor is 0, and motor can not rotate.Therefore,, in the time of this position measurement magnetic linkage, rotor does not need locking can measure adjacent phase
position magnetic linkage curve.In order further to reduce error, introducing mutual inductance correction coefficient M carrys out the difference of magnetic linkage under quantitative description two-phase incentive mode and single-phase incentive mode, if two-phase is switched on simultaneously, the magnetic linkage of measuring is
, by formula
magnetic linkage value is proofreaied and correct.
in actual test process, when two-phase energising test, there will be rotor rotation phenomenon, in both sides, rotor-position there will be
deviation, brings test error thus.According to the symmetry of SRM, can be by asking the method for arithmetic mean to eliminate error to two-phase actual measurement magnetic linkage value.
the torque of switching on mutually to aliging at aligned position is 0, and motor can not rotate, and therefore, need not can directly measure alignment phase by locked rotor
position magnetic linkage curve.
based on the magnetic magnetic linkage curve correction of energy altogether
switched reluctance machines electromagnetic torque press magnetic can calculate altogether more convenient, in view of electromagnetic torque and magnetic common can relation, the present invention's proposition can carry out indirect calculation magnetic linkage correction factor altogether by magnetic.Because switched reluctance machines rotor is all without permanent magnet, after magnetic linkage curve is determined, magnetic can be calculated as follows altogether:
suppose
the magnetic that position FEM (finite element) calculation obtains can be altogether
, the magnetic that experiment test obtains can be altogether
, can obtain aligned position magnetic according to formula 1 altogether can correction factor
, formula 1 is:
correspondingly, can calculate
position magnetic altogether can correction factor
, and calculate each position magnetic linkage correction factor according to formula 2
, formula 2 is:
wherein, coefficient
.
each position flux linkage calculation curve that finite element method is obtained is multiplied by corresponding coefficient
, just obtain revised magnetic linkage family of curves.
embodiment 9:
the described switched reluctance motor flux linkage curve test method that can revise altogether based on magnetic is to the present invention be directed to the flux linkage characteristic curve that 12/8 switched reluctance machines can be revised altogether based on magnetic as shown in figure 18.The main flux linkage characteristic Quick Measurement locking by SRM two-dimensional static electromagnetic property FEM (finite element) calculation, without motor rotor position and the correction of the common energy of magnetic coefficient complete.
one, SRM two-dimensional static electromagnetic property FEM (finite element) calculation
1, the hypothesis that two-dimensional finite unit proposes
(1) adopt virtual two-dimensional field stimulation actual electrical magnetic field; Choose rectangular coordinate system and International System of Units.
subtlety to stator rabbet, stator sector piece fillet and pole lamination part fillet, chamfering is made approximate processing.
ignore end effect, magnetic field is uniformly distributed vertically, i.e. current density vector
with magnetic potential vector
only has axial component
,
.
outside motor magnetic field proportion is very little, can be similar to and ignore.Rotor inner surface circumference and stator outer surface circumference are zero vector plane.
, switched reluctance machines two-dimentional static magnetic analysis
12/8 switched reluctance machines is carried out to two-dimentional static magnetic analysis herein, the correlation parameter of model machine is as shown in table 1, and structure as shown in Figure 3.
table 1 SRM model machine parameter
| Parameter | Numerical value | Parameter | Numerical value |
| Rated power (watt) | 3000 | Rated voltage (volt) | 514 |
| Rated speed (rev/min) | 3000 |
The number of |
3 |
| Stator poles | 12 |
Rotor number of |
8 |
| Stator outer diameter (rice) | 0.12 | Diameter of stator bore (rice) | 0.072 |
| Rotor diameter (rice) | 0.0723 | Rotor internal diameter (rice) | 0.03 |
| Stator polar arc (degree) | 15 | Rotor pole arc (degree) | 16.95 |
| Stator yoke thick (rice) | 0.01 | Rotor yoke thick (rice) | 0.01 |
| Core length (rice) | 0.08 | Air gap (rice) | 0.0003 |
| Rotor flute profile: | Parallel teeth | Winding resistance (Europe) | 2.47 |
solve magnetic potential according to formula 3
, wherein
for vector magnetic potential is in the value of Z-direction,
current density is in the value of Z-direction.
try to achieve the magnetic induction density of static magnetic field and the physical quantity of magnetic field intensity according to formula 4, formula 5.
calculate magnetic linkage according to Maxwell's static magnetic field theory,
magnetic flux density,
it is area.
according to SRM actual conditions, in ensureing counting accuracy, reduce computing time as far as possible.Should select suitable mesh generation size.This model is closeer at air gap place subdivision as shown in Figure 4, Figure 5, relatively sparse at other local subdivision, can ensure like this computational accuracy, also reduces computing time simultaneously.
, switched reluctance machines two-dimentional static magnetic field calculate
taking motor in nominal operation situation as example, when SRM mono-phase winding is passed to 9A rated current, can obtain the magnetic line of force distribution plan of two-dimensional magnetic field under different angles as shown in Fig. 6, Fig. 7, Fig. 8, Fig. 9.Under its different angles, the magnetic flux distribution figure of two-dimensional magnetic field is as shown in Figure 10, Figure 11, Figure 12, Figure 13.
respectively the magnetic linkage under different electric currents, different angles is carried out to interpolation calculation, magnetic linkage 2D calculated curve is as shown in Figure 14 2, and magnetic linkage 3D calculated curve as shown in figure 15.
two, test fast and proofread and correct without the flux linkage characteristic of motor rotor position locking
for three-phase 12/8 utmost point motor, definition stator salient poles and rotor slot center line aligned position are
, its alignment phase
, adjacent phase
, as shown in Figure 3.When in aligned position, two-phase line centered by aligned position distributes in symmetria bilateralis in addition, and space bit angle setting is 7.5o.Because the level of torque equal direction of distance center line same position is contrary, if switch on to the two-phase that space bit angle setting is 7.5o simultaneously, the total torque of motor is 0, and motor can not rotate.Therefore,, without lock out motor rotor-position, can measure
magnetic linkage curve.Equally, have 0 torque district at aligned position, give the electricity consumption of alignment phase in this position, motor can not rotate, and therefore, need not also can measure by locked rotor
magnetic linkage curve.
known by above analysis,
with
article two, magnetic linkage curve can not need locked rotor position directly to test, and concrete test mode has two kinds, and the one, in the test of switching on of aligned position three-phase simultaneously; The 2nd, in the first two-phase energising of aligned position test
magnetic linkage curve, then the electrical testing that communicates
magnetic linkage curve.Why first to two-phase, energising is in order to ensure that rotor pole center line can align with stator poles center line, to have 0 torque district near aligned position, and one switches on mutually can not ensure the alignment of rotor utmost point center line.But three-phase excitation simultaneously can cause aligned position magnetic circuit seriously saturated, and potential drop significantly increases, phase magnetic linkage is had to considerable influence (every phase magnetic flux reduces, and phase magnetic linkage also reduces).When two-phase encourages simultaneously, rotor yoke portion magnetic flux increases, and saturation of magnetic path is increased, but near rotor tooth and stator slot axial alignment position, magnetic circuit reluctance is larger, and this position is less on the impact of phase magnetic linkage.In order further to reduce error, introduce mutual inductance correction coefficient M and carry out quantitative description two-phase incentive mode magnetic linkage
with magnetic linkage under single-phase incentive mode
difference, through repeatedly test get
, press
magnetic linkage value is proofreaied and correct.
known according to formula (7) discretize SRM magnetic linkage expression formula, only need just can obtain by the measurement of voltage, electric current the magnetic linkage of SRM.
in formula,
for sampling time interval, N is measurement point number.
in actual test process, if not bringing onto load of SRM, rotor resistance is less, when two-phase energising test, there will be rotor rotation phenomenon, and the rotor-position deviation occurring thus will be brought error to test.Should be noted that, the two-phase of energising line centered by aligned position distributes in symmetria bilateralis, occurs mutually when one
when the deviation of angle, another must occur mutually
the deviation of angle, according to the symmetry of SRM, can be by asking the method for arithmetic mean to eliminate error to two-phase actual measurement magnetic linkage value.Process arithmetic mean test result after treatment (
magnetic linkage curve) as shown in figure 16, in figure, provided the experimental results that adopts position local device simultaneously.As can be seen from the figure, test result of the present invention and experimental method test result are basically identical.
three, based on the magnetic magnetic linkage curve correction of energy altogether
alignment phase
the magnetic that place's FEM (finite element) calculation obtains can be altogether
, the magnetic that experiment test obtains can be altogether
, calculating aligned position magnetic according to formula 1 altogether can correction factor
.Correspondingly, can calculate adjacent phase
place's magnetic altogether can correction factor
, and calculate the magnetic linkage correction factor of each position according to formula 2
.
according to experimental result, calculate
,
,
, obtain thus magnetic linkage family of curves after proofreading and correct as shown in figure 17, in figure, provided the experimental results that adopts position local device simultaneously.As can be seen from Figure 17, the method for testing that the present invention proposes and the test result of experimental method are basically identical.
for further illustrating the effect of the present invention to magnetic linkage test, provide
time magnetic can revise altogether after comparison before magnetic linkage curve and correction, as shown in figure 18.
Claims (7)
1.
a kind of switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic, its composition comprises: direct current adjustable stabilized voltage supply, it is characterized in that: described direct current adjustable stabilized voltage supply is connected with switch reluctance machine drive, described switch reluctance machine drive is connected with threephase switch reluctance motor, CAN analyser respectively, and described CAN analyser is connected with PC.
2.
the switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic according to claim 1, it is characterized in that: described switch reluctance machine drive comprises housing, described enclosure interior is provided with dsp controller, described dsp controller and IGBT driving circuit, analog to digital converter connects, described IGBT driving circuit is connected with winding, described winding respectively with voltage sensor, current sensor connects, described voltage sensor, described current sensor is connected with described analog to digital converter respectively, in described dsp controller, there is CAN interface, described CAN interface is connected with described CAN analyser.
3.
the switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic according to claim 1 and 2, it is characterized in that: the model of described dsp controller is TMS320F2812, the model of described current sensor is LT 58-S7/SP, the model of described voltage sensor is CLSM-10MA, and described analog to digital converter adopts 12 high-speed synchronous data acquiring chip AD7864.
4.
according to the switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic described in claim 1 or 2 or 3, it is characterized in that: described threephase switch reluctance motor is three-phase 12/8 switched reluctance machines.
5.
a method of testing of utilizing the described switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic of one of claim 1-4, is characterized in that: the method comprises the steps:
(1) use two-dimensional finite element method to obtain switched reluctance motor flux linkage calculated curve by PC;
(2) in alignment place of motor stator and rotor salient pole center line, without locked rotor position, measure alignment phase by single-phase excitation
position magnetic linkage curve, then by two-phase excitation and introduce coefficient of mutual inductance M and accurately obtain adjacent phase
position magnetic linkage curve;
(3), according to two magnetic linkage curves of actual measurement, can revise altogether former reason PC according to magnetic and calculate magnetic linkage correction factor, and two-dimensional finite unit calculated curve is revised, thereby obtain three-dimensional accurately
magnetic linkage family of curves;
wherein:
for the angle of alignment phase stator salient poles center line and adjacent rotor groove center line,
for the angle of homonymy adjacent phase stator salient poles center line and this rotor slot center line.
6.
the method of testing of the switched reluctance motor flux linkage curve testing device that can revise altogether based on magnetic according to claim 5, is characterized in that: described to revise altogether principle calculating magnetic linkage correction factor according to magnetic be by the phase of aliging 
with adjacent phase 
the magnetic that position is surveyed is energy altogether 
magnetic energy altogether with FEM (finite element) calculation gained 
, obtain respectively alignment phase according to formula 1 
with adjacent phase 
position magnetic altogether can correction factor 
, 
, wherein, formula 1 is ;
according to required
,
, obtain the magnetic linkage correction factor that is total to energy under Difference angles based on magnetic by formula 2, wherein, formula 2 is
, and COEFFICIENT K is
.
7.
according to the switched reluctance motor flux linkage curve test method that can revise altogether based on magnetic described in claim 5 or 6, it is characterized in that: described again by two-phase excitation and introduce coefficient of mutual inductance M and accurately obtain adjacent phase 
position magnetic linkage curve, described introducing coefficient of mutual inductance M carrys out the difference of magnetic linkage under quantitative description two-phase incentive mode and single-phase incentive mode, thereby accurately obtains adjacent phase 
position magnetic linkage curve; If two-phase is switched on simultaneously, the magnetic linkage of measuring is , by formula magnetic linkage value is proofreaied and correct.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316876A (en) * | 2014-10-08 | 2015-01-28 | 西北工业大学 | Quick method for obtaining three-phase 12/8 pole SRM magnetic linkage characteristics with consideration on mutual inductance coupling |
| CN104330755A (en) * | 2014-08-26 | 2015-02-04 | 南通大学 | Switched-reluctance-motor flux linkage characteristic online measurement method |
| CN106992732A (en) * | 2016-01-20 | 2017-07-28 | 同济大学 | A kind of motor magnetic coenergy model sets up system |
| CN112068053A (en) * | 2020-09-18 | 2020-12-11 | 福州大学 | Method for indirectly measuring magnetic linkage and attractive force characteristics of electromagnetic switch operating mechanism |
| CN116795168A (en) * | 2023-08-21 | 2023-09-22 | 希望森兰科技股份有限公司 | Virtual flux linkage-based frequency converter aging power factor control method |
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| CN104330755A (en) * | 2014-08-26 | 2015-02-04 | 南通大学 | Switched-reluctance-motor flux linkage characteristic online measurement method |
| CN104330755B (en) * | 2014-08-26 | 2017-03-29 | 南通大学 | A kind of switched reluctance motor flux linkage characteristic On-line Measuring Method |
| CN104316876A (en) * | 2014-10-08 | 2015-01-28 | 西北工业大学 | Quick method for obtaining three-phase 12/8 pole SRM magnetic linkage characteristics with consideration on mutual inductance coupling |
| CN104316876B (en) * | 2014-10-08 | 2017-03-22 | 西北工业大学 | Method for rapidly obtaining three-phase 12/8 pole SRM magnetic linkage characteristics with consideration on mutual inductance coupling |
| CN106992732A (en) * | 2016-01-20 | 2017-07-28 | 同济大学 | A kind of motor magnetic coenergy model sets up system |
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| CN112068053B (en) * | 2020-09-18 | 2021-09-24 | 福州大学 | Method for indirectly measuring magnetic linkage and attractive force characteristics of electromagnetic switch operating mechanism |
| CN116795168A (en) * | 2023-08-21 | 2023-09-22 | 希望森兰科技股份有限公司 | Virtual flux linkage-based frequency converter aging power factor control method |
| CN116795168B (en) * | 2023-08-21 | 2023-10-31 | 希望森兰科技股份有限公司 | Virtual flux linkage-based frequency converter aging power factor control method |
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