CN108429505A - A kind of switched reluctance machines instantaneous torque on-line identification method - Google Patents
A kind of switched reluctance machines instantaneous torque on-line identification method Download PDFInfo
- Publication number
- CN108429505A CN108429505A CN201810170218.XA CN201810170218A CN108429505A CN 108429505 A CN108429505 A CN 108429505A CN 201810170218 A CN201810170218 A CN 201810170218A CN 108429505 A CN108429505 A CN 108429505A
- Authority
- CN
- China
- Prior art keywords
- points
- flux linkage
- characteristic curve
- state
- linkage characteristic
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a kind of switched reluctance machines instantaneous torque on-line identification methods.According to the flux linkage characteristic of switched reluctance machines and the situation of change of phase current and phase magnetic linkage, it is divided to 6 kinds of states in line computation by two sampled point flux linkage characteristic curves and the area of the straight line area defined of 2 points of connection, the mechanical energy that i.e. rotor exports between the two sampled points in rotation process, and then instantaneous torque is recognized.This method has the advantages such as precision is high, rapidity is good, priori data demand is small, and suitable for the switched reluctance machines with different topology structure.
Description
Technical field
The present invention relates to a kind of switched reluctance machines instantaneous torque on-line identification methods, belong to parameter of electric machine identification field.
Background technology
The instantaneous torque information of switched reluctance machines is most important for the realization of some advanced control methods, and torque passes
Sensor can not only increase system cost and complexity, and since bandwidth limits, and be only applicable to motor low speed operation occasion, therefore have
Switched reluctance machines instantaneous torque discrimination method of necessity research suitable for wide range speed range.
Non-linear relation between phase current and rotor-position increases the difficulty of switched reluctance machines torque identification, at present
There are mainly three types of methods：Analytic Calculation, artificial neural network method, area approximation method.Analytic Calculation can be in a short time
The instantaneous torque of motor is recognized, and the requirement to hardware is relatively low, but that there are computation complexities is higher, identification for existing method
The deficiencies of low precision；Artificial nerve network model is usually implemented in processor, by some online electromagnetic parameters to network weight
It is adjusted, this method generally requires a large amount of priori electromagnetic property data, and the convergence rate of model and convergence quality are serious
Dependent on network structure, training method and initial weight；Area approximation method is very convenient, is not necessarily to priori performance data, but existing
The identification precision of method at saturation condition is poor.Novel switched reluctance motor instantaneous torque involved in the present invention on-line identification side
Method has the advantages such as precision is high, rapidity is good, priori data demand is small.
Invention content
The present invention is according to the flux linkage characteristic of switched reluctance machines and the situation of change of phase current and phase magnetic linkage, point 6 kinds of shapes
The mechanical energy that state exports during line computation rotor turns to another sampled point from a sampled point, and then to instantaneously turning
Square is recognized, and method realizes that steps are as follows：
Step 1：Two adjacent sampled points are denoted as P and Q respectively, and Q points are after P points；
Step 2：On-line measurement obtains the real-time phase current values i of P points and Q pointspAnd iQ, rotor position angle θpAnd θQ, and lead to
Cross the magnetic linkage value that P points and Q points is calculated in formula (1)WithWhereinV, R and i is respectively phase magnetic linkage, phase voltage, mutually electricity
Resistance and phase current, t are the time；
Step 3：The magnetic coenergy W ' of P points and Q points is calculated using formula (2)PWith W 'Q, in formula, W ' is magnetic coenergy,
isFor the phase current at the critical saturation point of flux linkage characteristic, LsFor unsaturated inductance；
Step 4：Calculate by the flux linkage characteristic curve of P points position, the flux linkage characteristic curve of Q points position and
The area in the region that the straight line of 2 points of P, Q of connection surrounds, you can obtain rotor and turned to where Q points from P points position
The mechanical energy exported during position, the calculating are divided into following 6 states：
State I：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ>iPAndThe state is phase winding excitation between non-aligned position and aligned position, and phase voltage is more than back-emf, electric at this time
The mechanical energy S of machine outputIIt can be calculated by formula (3)；
State I I：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAnd The state is phase winding excitation between non-aligned position and aligned position, and phase voltage is less than back-emf, at this time motor
The mechanical energy S of outputIIIt can be calculated by formula (4)；
State I II：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAnd The state is that phase winding demagnetizes between non-aligned position and aligned position, the mechanical energy S of motor output at this timeIIIIt can be by public affairs
Formula (5) is calculated；
State I V：P points position flux linkage characteristic curve is higher than Q points position flux linkage characteristic curve, iQ>iPAndThe state is phase winding excitation before non-aligned position, i.e., advanced conducting, the mechanical energy S of motor output at this timeIVIt can
It is calculated by formula (6)；
State V：P points position flux linkage characteristic curve is higher than Q points position flux linkage characteristic curve, iQ<iPAndThe state is phase winding excitation after aligned position, the mechanical energy S of motor output at this timeVIt can be calculated by formula (7)
It obtains；
State VI：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAndThe state is phase winding afterflow between non-aligned position and aligned position, phase winding 0, the machine of motor output at this time
Tool energy SVIIt can be calculated by formula (8)；
Step 5：The instantaneous torque of switched reluctance machines, wherein T are sought by formula (9)insFor instantaneous torque, S is step
The output mechanical energy being calculated in rapid four.
Beneficial effects of the present invention：1. can the instantaneous torque of switched reluctance machines be obtained online in high precision, and only need insatiable hunger
With phase inductance information；2. only relating to simple mathematical operation, the stability and real-time of identification ensure that；3. method is based on energy
Replacement theory is suitable for the switched reluctance machines with different topology structure.
Description of the drawings
Fig. 1 is state I output mechanical energy schematic diagram.
Fig. 2 is state I I output mechanical energy schematic diagrames.
Fig. 3 is state I II output mechanical energy schematic diagrames.
Fig. 4 is state I V output mechanical energy schematic diagrames.
Fig. 5 is state V output mechanical energy schematic diagrames.
Fig. 6 is state VI output mechanical energy schematic diagrames.
Specific implementation mode
Below in conjunction with attached drawing and specific example, technical scheme of the present invention is described in detail.Motor used in example is
One 12/8 pole switching reluctance motor of 1kW three-phases.
Step 1：Two adjacent sampled points are denoted as P and Q respectively, and Q points are after P points；
Step 2：The real-time phase current values i of on-line measurement P points and Q pointspAnd iQ, rotor position angle θpAnd θQ, and substitute into public affairs
Formula (1) calculates the magnetic linkage value of P points and Q pointsWith
Step 3：The magnetic linkage value that step 2 is obtained substitutes into the magnetic coenergy W that formula (2) calculates P points and Q pointsP' and WQ′；
Step 4：Calculate by the flux linkage characteristic curve of P points position, the flux linkage characteristic curve of Q points position and
The area in the region that the straight line of 2 points of P, Q of connection surrounds, i.e. rotor turn to Q points position mistake from P points position
The mechanical energy exported in journey is divided into following 6 states：
State I：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ>iPAndAs shown in Figure 1, the mechanical energy S of motor output is calculated by formula (3)I；
State I I：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAndAs shown in Fig. 2, the mechanical energy S of motor output is calculated by formula (4)II；
State I II：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAndAs shown in figure 3, the mechanical energy S of motor output is calculated by formula (5)III；
State I V：P points position flux linkage characteristic curve is higher than Q points position flux linkage characteristic curve, iQ>iPAndAs shown in figure 4, the mechanical energy S of motor output is calculated by formula (6)IV；
State V：P points position flux linkage characteristic curve is higher than Q points position flux linkage characteristic curve, iQ<iPAndThe mechanical energy S of motor output is calculated by formula (7)V；
State VI：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAndThe mechanical energy S of motor output is calculated by formula (8)VI；
Step 5：The instantaneous torque of switched reluctance machines is sought by formula (9).
Claims (1)
1. a kind of switched reluctance machines instantaneous torque on-line identification method, it is characterised in that：Magnetic linkage according to switched reluctance machines
The situation of change of characteristic and phase current and phase magnetic linkage, point 6 kinds of states are turned in line computation rotor from a sampled point
The mechanical energy exported during another sampled point, and then instantaneous torque is recognized, method realizes that steps are as follows：
Step 1：Two adjacent sampled points are denoted as P and Q respectively, and Q points are after P points；
Step 2：On-line measurement obtains the real-time phase current values i of P points and Q pointspAnd iQ, rotor position angle θpAnd θQ, and pass throughThe magnetic linkage value of P points and Q points is calculatedWithWhereinV, R and i is respectively phase magnetic
Chain, phase voltage, phase resistance and phase current, t are the time；
Step 3：Utilize formulaThe magnetic of P points and Q points is calculated
It altogether can W 'PWith W 'Q, in formula, W ' is magnetic coenergy, isFor the phase current at the critical saturation point of flux linkage characteristic, LsFor unsaturated electricity
Sense；
Step 4：It calculates by the flux linkage characteristic curve of P points position, the flux linkage characteristic curve of Q points position and connection
P, the area in the region that the straight line of 2 points of Q surrounds, you can obtain rotor and turn to Q points position from P points position
The mechanical energy exported in the process, the calculating are divided into following 6 states：
State I：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ>iPAndThe shape
State is phase winding excitation between non-aligned position and aligned position, and phase voltage is more than back-emf, the machine of motor output at this time
Tool energy SIIt can be byIt is calculated；
State I I：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAndIt should
State is phase winding excitation between non-aligned position and aligned position, and phase voltage is less than back-emf, motor output at this time
Mechanical energy SIIIt can be byIt is calculated；
State I II：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAnd It should
State is that phase winding demagnetizes between non-aligned position and aligned position, the mechanical energy S of motor output at this timeIIIIt can be byIt is calculated；
State I V：P points position flux linkage characteristic curve is higher than Q points position flux linkage characteristic curve, iQ>iPAndIt should
State is phase winding excitation before non-aligned position, i.e., advanced conducting, the mechanical energy S of motor output at this timeIVIt can be byIt is calculated；
State V：P points position flux linkage characteristic curve is higher than Q points position flux linkage characteristic curve, iQ<iPAndThe shape
State is phase winding excitation after aligned position, the mechanical energy S of motor output at this timeVIt can be byIt is calculated；
State VI：Q points position flux linkage characteristic curve is higher than P points position flux linkage characteristic curve, iQ<iPAndIt should
State is phase winding afterflow between non-aligned position and aligned position, phase winding 0, the mechanical energy S of motor output at this timeVIIt can
ByIt is calculated；
Step 5：Pass through formulaSeek the instantaneous torque of switched reluctance machines, wherein TinsFor instantaneous torque, S is
The output mechanical energy being calculated in step 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170218.XA CN108429505A (en) | 2018-03-01 | 2018-03-01 | A kind of switched reluctance machines instantaneous torque on-line identification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170218.XA CN108429505A (en) | 2018-03-01 | 2018-03-01 | A kind of switched reluctance machines instantaneous torque on-line identification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108429505A true CN108429505A (en) | 2018-08-21 |
Family
ID=63157339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810170218.XA Pending CN108429505A (en) | 2018-03-01 | 2018-03-01 | A kind of switched reluctance machines instantaneous torque on-line identification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108429505A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030234626A1 (en) * | 2002-06-21 | 2003-12-25 | Gabriel Gallegos-Lopez | Method and regulator based on peak current control for electric machines |
| CN101526823A (en) * | 2009-04-20 | 2009-09-09 | 哈尔滨工业大学 | Control method of constant torque of switched reluctance motor |
| CN102013860A (en) * | 2009-09-08 | 2011-04-13 | 北京中纺锐力机电有限公司 | Control system of switch magnetoresistive electromotor |
| 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 |
| CN107425781A (en) * | 2016-01-06 | 2017-12-01 | 西北工业大学 | A kind of SRM positions predictor method based on linear flux linkage model and linear regression analysis |
-
2018
- 2018-03-01 CN CN201810170218.XA patent/CN108429505A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030234626A1 (en) * | 2002-06-21 | 2003-12-25 | Gabriel Gallegos-Lopez | Method and regulator based on peak current control for electric machines |
| CN101526823A (en) * | 2009-04-20 | 2009-09-09 | 哈尔滨工业大学 | Control method of constant torque of switched reluctance motor |
| CN102013860A (en) * | 2009-09-08 | 2011-04-13 | 北京中纺锐力机电有限公司 | Control system of switch magnetoresistive electromotor |
| 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 |
| CN107425781A (en) * | 2016-01-06 | 2017-12-01 | 西北工业大学 | A kind of SRM positions predictor method based on linear flux linkage model and linear regression analysis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206564553U (en) | Brushless DC motor control system based on current hysteresis-band control | |
| CN104836504B (en) | The adaptive fusion method of salient-pole permanent-magnet synchronous motor precision torque output | |
| CN110729941B (en) | Control method of built-in permanent magnet synchronous motor | |
| CN107154716B (en) | Control method of double-stator circumferential dislocation angle electric excitation direct current motor | |
| CN109412482A (en) | A kind of quasi- Z-source inverter-permanent magnet synchronous motor system unified predictive control method | |
| CN109150042A (en) | A kind of surface permanent magnetic synchronous motor Feedforward Decoupling field weakening control method | |
| CN105610373B (en) | A kind of direct Torque Control and method improving motor torque performance | |
| CN107482982A (en) | A kind of Vector Control System of Induction Motor method based on iron loss model | |
| CN102647134A (en) | Efficiency optimization control method without angle sensor for permanent magnet synchronous motor | |
| CN106685299A (en) | Current control method of built-in PMSM (Permanent Magnet Synchronous Motor) | |
| CN111711396A (en) | Method for setting control parameters of speed ring of permanent magnet synchronous motor based on fractional order sliding mode controller | |
| CN110601606B (en) | Internal power angle control method of brushless direct current motor | |
| CN107017817A (en) | A kind of high speed IPM synchronous motor current decoupling control method | |
| CN109787528A (en) | Asynchronous motor direct torque control system and method based on rotational speed regulation duty ratio | |
| CN110784144B (en) | Improved control method of built-in permanent magnet synchronous motor | |
| CN110932642B (en) | Hermite interpolation-based transient phase torque estimation method for switched reluctance motor | |
| CN107919829A (en) | A kind of permanent magnet synchronous motor model prediction method for controlling torque | |
| CN112821834B (en) | Online parameter identification method and device for permanent magnet synchronous motor | |
| CN109495040A (en) | Motor PI control parameter setting method based on dynamic inductance | |
| CN108429505A (en) | A kind of switched reluctance machines instantaneous torque on-line identification method | |
| CN109617468A (en) | Two Vector Modulation permasyn morot PREDICTIVE CONTROL optimization methods | |
| CN103869245A (en) | Magnetic co-energy correction-based switched reluctance motor (SRM) flux linkage curve test method and device | |
| CN117277878A (en) | Motor load starting control method based on phase angle compensation | |
| CN108258962B (en) | Permanent magnet motor inductance parameter identification method and system | |
| CN110535390A (en) | A kind of switching method of permanent magnet synchronous motor MTPA control and FW control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180821 |