CN109194083B - A kind of switched reluctance machines and location estimation redundant fault-tolerant control method of built-in detection coil - Google Patents
A kind of switched reluctance machines and location estimation redundant fault-tolerant control method of built-in detection coil Download PDFInfo
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- CN109194083B CN109194083B CN201811067989.2A CN201811067989A CN109194083B CN 109194083 B CN109194083 B CN 109194083B CN 201811067989 A CN201811067989 A CN 201811067989A CN 109194083 B CN109194083 B CN 109194083B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/12—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using detecting coils using the machine windings as detecting coil
-
- 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
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
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- 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
- H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
- H02P2203/01—Motor rotor position determination based on the detected or calculated phase inductance, e.g. for a Switched Reluctance Motor
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Abstract
The present invention relates to a kind of switched reluctance machines of built-in detection coil and location estimation redundant fault-tolerant control methods, using the switch magnetoresistance motor rotor position estimation method of additional Dual channel detection coil, it, being capable of the faults-tolerant control that is switched fast of quick diagnosis and backup coil and when realizing detection coil short trouble or open-circuit fault；The tolerance and reliability for effectively improving switched reluctance machines position detecting system reply adverse circumstances meet the requirement to switched reluctance machines high reliability, strong tolerance such as aerospace, new-energy automobile, high-end equipment spindle motor, electric tool, high-speed motor driving.
Description
Technical field
The present invention relates to a kind of switched reluctance machines of built-in detection coil and location estimation redundant fault-tolerant control methods, belong to
In electric machines test technical field.
Background technique
Switched reluctance machines have structure simple rigid, are suitble to high speed, the features such as hot operation and fault-tolerant ability are strong.
The accurate detection or estimation of rotor-position directly influence the control performance of motor.Motor stator tooth extremely in plus detection coil,
By the relationship of the variation of detection coil phase inductance and rotor-position come estimate switch magnetoresistance motor rotor position in the way of
Start to be studied.Detection coil technology is independently of the phase winding of motor, and phase current is without detection coil, therefore use detects
Coil come carry out position detection without using in phase winding power current and end voltage, also not by the shadow of motor control itself
It rings, there is preferable flexibility.In addition, it also has the adaptation of adverse circumstances relative to other traditional position sensors
Ability.But when short circuit or open circuit fault occur for detection coil, rotor position estimate can not be carried out.How optimization inspection is passed through
The mode of connection of test coil realizes the redundancy backup of detection coil, and realized using control strategy failure coil is carried out it is quick
Diagnosis and seamless switching, so that the backup detection coil not broken down continues rotor position estimate, it can be ensured that
The stability of position detection maintains the normal operation of switched reluctance machines, it will help further increases switched reluctance machines system
The reliability of system, particularly with such as aerospace, new-energy automobile, high-end equipment spindle motor, electric tool, high-speed motor
Driving etc. has important practical value to the very high application of switched reluctance machines reliability requirement.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind to be able to ascend switched reluctance machines position detecting system pair
The switched reluctance machines of the built-in detection coil of adverse circumstances tolerance and reliability.
In order to solve the above-mentioned technical problem the present invention uses following technical scheme: the present invention devises a kind of built-in detection line
The switched reluctance machines of circle, including switched reluctance machines (0) further include phase winding coil (1), detection coil (2)；Wherein, it examines
Test coil (2) includes first passage detection coil (3) and second channel detection coil (4)；
Phase winding coil (1) and detection coil (2) be wound on jointly the stator tooths of switched reluctance machines (0) extremely on, and examine
Test coil (2) is wound on the stator poles tip position of switched reluctance machines (0)；The connection of every phase main winding in phase winding coil (1)
Mode is to be gone out by MA1+ into MA1-, and MA1- meets MA2+, is gone out by MA2+ into MA2-, and MA2- meets MA3+, is gone out by MA3+ into MA3-, MA3-
MA4+ is met, is gone out by MA4+ into MA4-, pole polarity is arranged as NSNS mode to main winding after powered up；
Two in four pole detection coils of every phase diametrically are connected in series respectively, first passage detection coil (3) by
SA1+ goes out into SA1-, and SA1- is connected with SA3+, then is gone out by SA3+ into SA3-；Second channel detection coil (4) is by SA2+ into SA2-
Out, SA2- is connected with SA4+, then is gone out by SA4+ into SA4-；Pole polarity is arranged as NS arrangement after opposite detection coil is powered,
Polarity arrangement after first passage detection coil (3) and second channel detection coil (4) energization in four stator poles is followed successively by
NNSS mode.
With it is above-mentioned corresponding, the present invention also technical problems to be solved are to provide the switched reluctance machines of built-in detection coil
Location estimation redundant fault-tolerant control method, can effectively lifting switch reluctance motor position detecting system to adverse circumstances be resistant to
Ability and reliability.
In order to solve the above-mentioned technical problem the present invention uses following technical scheme: the present invention devises a kind of built-in detection line
The location estimation redundant fault-tolerant control method of the switched reluctance machines of circle, switched reluctance machines (0) initialization are based on first passage
Detection coil (3) or second channel detection coil (4) work, the location estimation redundant fault-tolerant control method, including such as
Lower step:
Step A. three-phase totally 6 groups of detection coils SA1+, SA3- on switched reluctance machines (0), SA2+, SA4-, SB1+,
SB3-, SB2+, SB4-, SC1+, SC3- and SC2+, SC4- inject high-frequency square-wave signal simultaneously, subsequently into step B；
Step B. is based on passing through sampling for the operation of switched reluctance machines (0) detection coil injection high-frequency square-wave signal
Resistance sampling obtains the injection response current in switched reluctance machines (0) detection coil, subsequently into step C；
Step C. successively passes through diode peak detecting circuit and filtered electrical for the injection response current in detection coil
Road obtains the envelope signal of injection response current, subsequently into step D；
Step D. judges whether envelope signal is within the scope of default reasonable signal, is, enters step F；Deny entering
Step E；
Whether step E. detection phase winding coil (1) breaks down, and switches switched reluctance machines (0) and be based on another channel
Detection coil works, subsequently into step F；
Step F. executes rotor position estimate operation, subsequently into step G；
Step G. is according to rotor position estimate as a result, successively through drive and control of electric machine, driving circuit, power inverter, in fact
Now it is directed to the control of switched reluctance machines (0).
As a preferred technical solution of the present invention, in the step F, rotor position estimate operation, including walk as follows
It is rapid:
Step F1. is inverted for envelope signal, obtains corresponding inductance value LA, and it is unsaturated with C phase to choose A phase
The upper intersection value of inductance is as inductance threshold values LTH, subsequently into step F2；
Step F2. judges the working condition of switched reluctance machines (0) at this time, if switched reluctance machines (0) are in unsaturation
When state is run, then F3 is entered step；If entering step F4 when switched reluctance machines (0) operation in a saturated state；
Step F3. is in unloaded or light running, by comparing unsaturated inductance value LAWith inductance threshold values LTHSize works as LA
≥LTHWhen, obtained pulse realizes the standing start of switched reluctance machines, in addition to this directly as the open signal of B phase
The position of the adjacent falling edges of acquired pulse will not change, and an electric period is differed between adjacent falling edges, i.e., 45 degree, is passed through
The time of adjacent falling edges is recorded to seek revolving speed and estimate rotor-position；
Step F4. is in saturation operation, by comparing pulsactor value LASWith inductance threshold values LTHSize works as LAS≥LTHWhen,
Obtained pulse is directly as the open signal of B phase, this wants narrow when opening section compared to unsaturation operation, but same satisfaction
The standing start requirement of switched reluctance machines, in addition to this adjacent falling edges position of acquired pulse and unsaturation run when institute
Obtained pulse falling edge position consistency, the time by recording adjacent falling edges to seek revolving speed and estimate rotor-position, have
The general-purpose capability of location estimation when standby saturation and unsaturated operation.
The switched reluctance machines and location estimation redundant fault-tolerant control method of a kind of built-in detection coil of the present invention are adopted
With above technical scheme is compared with the prior art, having following technical effect that a kind of built-in detection coil designed by the present invention
Switched reluctance machines and location estimation redundant fault-tolerant control method are turned using the switched reluctance machines of additional Dual channel detection coil
Sub- location estimation method, and when realizing detection coil short trouble or open-circuit fault, can quick diagnosis and backup coil it is fast
The faults-tolerant control of speed switching；Effectively improve switched reluctance machines position detecting system reply adverse circumstances tolerance and can
By property, meet aerospace, new-energy automobile, high-end equipment spindle motor, electric tool, high-speed motor driving etc. to switch magnetic
Hinder the requirement of motor high reliability, strong tolerance.
Detailed description of the invention
Fig. 1 is independent Dual channel detection coil type of attachment schematic diagram, and MA is A phase main winding, and SA is A phase detection coil；
Fig. 2 is detection coil structural schematic diagram, and A, B, C is three-phase phase winding, and N and S are pole polarity；
Location estimation method schematic diagram when Fig. 3 is saturation and unsaturated operation；
Fig. 4 is that detection coil high frequency injects equivalent circuit；
Fig. 5 is that detection coil high frequency when A phase detection coil is opened a way injects equivalent circuit；
Detection coil high frequency when Fig. 6 is the detection coil short circuit of A phase injects equivalent circuit；
Fig. 7 is detection coil open-circuit fault waveform diagram；
Fig. 8 is detection coil short trouble waveform diagram；
Fig. 9 is short trouble faults-tolerant control schematic diagram；
Figure 10 is open circuit fault faults-tolerant control schematic diagram；
Figure 11 is location estimation faults-tolerant control work flow diagram；
Figure 12 is the switch magnetoresistance motor rotor position estimation redundancy and fault-tolerant control system block diagram of subsidiary detection coil.
Wherein, 0. switched reluctance machines, 1. phase winding coils, 2. detection coils, 3. first passage detection coils, 4. second
The position of open circuit fault occurs for Air conduct measurement coil, 5. detection coils, and position occurs for 6. short troubles, and 7. occur open circuit fault
Detection coil output waveform, 8. switch to the envelope waveform of backup detection coil output, and open circuit fault occurs for 9. detection coils
Envelope waveform, 10. switch to the output envelope waveform of backup detection coil.
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawings of the specification.
The object of the invention is under adverse circumstances or operating condition, and traditional position sensor can not normal detection switch magnetic resistance
The problem of motor rotor position signal, proposes the switch magnetoresistance motor rotor position estimation side using additional Dual channel detection coil
Method, and realize the faults-tolerant control that detection coil Fault Quick Diagnosis and backup coil are switched fast.Lifting switch reluctance motor position
Set the tolerance and reliability of the adverse circumstances of detection system.
The present invention devises a kind of switched reluctance machines of built-in detection coil, is applied in reality, as shown in Figure 1,
Specifically include switched reluctance machines (0), phase winding coil (1), detection coil (2)；Wherein, detection coil (2) includes first logical
Road detection coil (3) and second channel detection coil (4).
Phase winding coil (1) and detection coil (2) be wound on jointly the stator tooths of switched reluctance machines (0) extremely on, and examine
Test coil (2) is wound on the stator poles tip position of switched reluctance machines (0)；The connection of every phase main winding in phase winding coil (1)
Mode is to be gone out by MA1+ into MA1-, and MA1- meets MA2+, is gone out by MA2+ into MA2-, and MA2- meets MA3+, is gone out by MA3+ into MA3-, MA3-
MA4+ is met, is gone out by MA4+ into MA4-, pole polarity is arranged as NSNS mode to main winding after powered up.
Two in four pole detection coils of every phase diametrically are connected in series respectively, first passage detection coil (3) by
SA1+ goes out into SA1-, and SA1- is connected with SA3+, then is gone out by SA3+ into SA3-；Second channel detection coil (4) is by SA2+ into SA2-
Out, SA2- is connected with SA4+, then is gone out by SA4+ into SA4-, to form two sets of independent detection coils；Opposite detection coil
After energization pole polarity be arranged as NS arrangement, first passage detection coil (3) and second channel detection coil (4) energization after four
Polarity arrangement in a stator poles is followed successively by NNSS mode；The detection coil polarity arrangement is arranged with the main winding polarity is in
Existing two, with two different features, can eliminate motor main winding to the Mutual Inductance Coupling effect of detection coil.Main winding and detection coil
Polarity arrangement mode is as shown in Figure 2.
Based on the switched reluctance machines of above-mentioned designed built-in detection coil, opening for built-in detection coil is further devised
The location estimation redundant fault-tolerant control method of reluctance motor is closed, switched reluctance machines (0) initialization is based on first passage detection line
Circle (3) or second channel detection coil (4) work, the location estimation redundant fault-tolerant control method, based on such as Fig. 3 institute
Show, location estimation method schematic diagram when saturation and unsaturation are run specifically comprises the following steps.
Step A. three-phase totally 6 groups of detection coils SA1+, SA3- on switched reluctance machines (0), SA2+, SA4-, SB1+,
SB3-, SB2+, SB4-, SC1+, SC3- and SC2+, SC4- inject high-frequency square-wave signal simultaneously, and high frequency injects equivalent circuit such as
Shown in Fig. 4, subsequently into step B.
Step B. is based on passing through sampling for the operation of switched reluctance machines (0) detection coil injection high-frequency square-wave signal
Resistance sampling obtains the injection response current in switched reluctance machines (0) detection coil, subsequently into step C.
Step C. successively passes through diode peak detecting circuit and filtered electrical for the injection response current in detection coil
Road obtains the envelope signal of injection response current, subsequently into step D.Wherein, the envelope signal and the detection line
It encloses inductance inversely, carries out location estimation after control chip sampling.
Step D. judges whether envelope signal is within the scope of default reasonable signal, is, enters step F；Deny entering
Step E.
Whether step E. detection phase winding coil (1) breaks down, and switches switched reluctance machines (0) and be based on another channel
Detection coil works, subsequently into step F.
Step F. F1 to step F4 as follows executes rotor position estimate operation, subsequently into step G.
Step F1. is inverted for envelope signal, obtains corresponding inductance value LA, and as shown in figure 3, choose A phase
With the upper intersection value of the unsaturated inductance of C phase as inductance threshold values LTH, subsequently into step F2.
Step F2. judges the working condition of switched reluctance machines (0) at this time, if switched reluctance machines (0) are in unsaturation
When state is run, then F3 is entered step；If entering step F4 when switched reluctance machines (0) operation in a saturated state.
Step F3. is in unloaded or light running, by comparing unsaturated inductance value LAWith inductance threshold values LTHSize works as LA
≥LTHWhen, obtained pulse realizes the standing start of switched reluctance machines, in addition to this directly as the open signal of B phase
The position of the adjacent falling edges of acquired pulse will not change, and an electric period is differed between adjacent falling edges, i.e., 45 degree, is passed through
The time of adjacent falling edges is recorded to seek revolving speed and estimate rotor-position.
Step F4. is in saturation operation, by comparing pulsactor value LASWith inductance threshold values LTHSize works as LAS≥LTHWhen,
Obtained pulse is directly as the open signal of B phase, this wants narrow when opening section compared to unsaturation operation, but same satisfaction
The standing start requirement of switched reluctance machines, in addition to this adjacent falling edges position of acquired pulse and unsaturation run when institute
Obtained pulse falling edge position consistency, the time by recording adjacent falling edges to seek revolving speed and estimate rotor-position, have
The general-purpose capability of location estimation when standby saturation and unsaturated operation.
The standing start ability of switched reluctance machines when the location estimation method has saturation and unsaturated operation, also can be real
Real time position estimation when existing motor operation, and location estimation is not influenced by motor operation control, has independence.
Step G. is according to rotor position estimate as a result, successively through drive and control of electric machine, driving circuit, power inverter, in fact
Now it is directed to the control of switched reluctance machines (0).
High-frequency square-wave signal when being respectively one group of open coil of detection coil generation and is short-circuit such as Fig. 5 and Fig. 6 injects
Equivalent circuit.
As shown in fig. 7, the envelope waveform exported when open circuit fault occurs for detection coil, worked normally in detection coil
When, envelope output amplitude range is within the scope of 4V~6V, and 5 be the position that open circuit fault occurs for detection coil, in detection coil
Injection Current is rapidly decreased to 0A in the position, and the envelope amplitude of output is caused to be rapidly decreased to 0V.As shown in figure 8, detection coil
The envelope waveform exported when short trouble occurs, 6 be that position occurs for short trouble, the detection coil output packet before abort situation
Winding thread signal amplitude range is 4V~6V, and Injection Current amplitude increases after short trouble occurs, and leads to detection coil output packet
Winding thread signal amplitude exceeds normal range (NR).Observe the envelope waveform that above two detection coil breaks down, common feature
It is output envelope amplitude not within the scope of 4V~6V, one group of threshold decision condition can be established, upper limit threshold is set as 6V, lower limit
Threshold value is set as 4V, by threshold decision condition detected envelope line signal amplitude, if there is no failure, marks for detection coil
Signal exports high level 1, if short trouble or open circuit fault occur for detection coil, marking signal exports low level 0, realizes inspection
The fault diagnosis of test coil.When marking signal exports low level 0, by the backup detection coil of software exchange to failure phase,
Backup detection coil continues to output envelope signal and carries out motor rotor position estimation, realizes detection coil fault mode lower switch
The stable fault-tolerant of magnetic resistance motor rotor position is estimated, it is ensured that the stable operation of motor.
As shown in figure 9, detection coil occurs open circuit fault and switches to the envelope waveform of backup detection coil rapidly, 7
It is the detection coil output waveform that open circuit fault occurs, 8 be the envelope waveform for switching to the output of backup detection coil, Cong Tuzhong
It can be seen that system switches to rapidly separately when detection coil all the way breaks down and exports envelope signal amplitude and be rapidly decreased to 0V
Detection coil exports envelope signal all the way, is connected with the envelope waveform stabilization before open circuit fault occurs, ensure that continuation
Rotor position estimate is carried out by envelope.
As shown in Figure 10, detection coil occurs short trouble and switches to the envelope signal of backup detection coil rapidly
Waveform, 9 be the envelope waveform that open circuit fault occurs for detection coil, and 10 be the output envelope wave for switching to backup detection coil
Shape, after open circuit fault occurs for detection coil, output envelope signal amplitude is more than 6V, and system passes through Fault Quick Diagnosis strategy
It switches to backup detection coil rapidly afterwards, continues to output envelope signal and carry out rotor position estimate, cut from above two failure
The state of changing, which can be seen that backup detection coil, can effectively substitute fault detection coil progress rotor position estimate.
As shown in figure 11, the work flow diagram of detection coil fault diagnosis and faults-tolerant control, by the way that bound threshold value is arranged
Detection coil output envelope amplitude range is detected, judges whether detection coil breaks down.If envelope signal width
It is worth range within the scope of 4V~6V, it was demonstrated that detection coil operation is in normal operating conditions, and if envelope signal amplitude model
It encloses not within 4V~6V, system takes the operation for being rapidly switched to backup coil immediately, defeated by backup path detection coil
Envelope signal out carries out location estimation.The fault-tolerant location estimation under detection coil open circuit or short circuit failure mode is maintained, is mentioned
Rise the reliability of position detecting system.
As shown in figure 12, the switch magnetoresistance motor rotor position estimation redundancy and fault-tolerant control system frame of built-in detection coil
Figure, the main switched reluctance machines ontology comprising additional double autonomous channels detection coil, motor control part, position detection part
With fault diagnosis part etc., wherein motor control part includes the control motor such as controller, driving circuit and power inverter
Stable operation.Position detection part includes that detection coil and resistance sampling circuit, detection filter circuit are used to export envelope
Signal, signal in-position algorithm for estimating module carry out rotor position estimate.Fault diagnosis part includes bound threshold decision
Module exports Reflector signal by setting upper limit threshold and lower threshold, if Reflector signal shows detection coil for 1
There is no failure, if Reflector signal is 0 to show that detection coil breaks down and need to be immediately switched to backup coil and turned
Sub- location estimation.
The switched reluctance machines of built-in detection coil and location estimation redundant fault-tolerant control method designed by the present invention are applicable in
In aerospace, new-energy automobile, high-end equipment spindle motor, electric tool, high-speed motor driving etc. to switched reluctance machines
The very high application of reliability requirement can satisfy under high temperature and high speed, greasy dirt dust and adverse circumstances and harsh operating condition
The requirement of operation.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
It makes a variety of changes.
Claims (1)
1. a kind of location estimation redundant fault-tolerant control method of the switched reluctance machines based on built-in detection coil, wherein built-in
The switched reluctance machines of detection coil, including switched reluctance machines (0), it is characterised in that: further include phase winding coil (1), inspection
Test coil (2)；Wherein, detection coil (2) includes first passage detection coil (3) and second channel detection coil (4)；Phase winding
Coil (1) and detection coil (2) be wound on jointly the stator tooths of switched reluctance machines (0) extremely on, and detection coil (2) is wound on
The stator poles tip position of switched reluctance machines (0)；In phase winding coil (1) connection type of every phase main winding be by MA1+ into
MA1- goes out, and MA1- meets MA2+, is gone out by MA2+ into MA2-, and MA2- meets MA3+, is gone out by MA3+ into MA3-, MA3- meets MA4+, by MA4+
Go out into MA4-, pole polarity is arranged as NSNS mode to main winding after powered up；
Two in four pole detection coils of every phase diametrically are connected in series respectively, and first passage detection coil (3) is by SA1+
Go out into SA1-, SA1- is connected with SA3+, then is gone out by SA3+ into SA3-；Second channel detection coil (4) is gone out by SA2+ into SA2-,
SA2- is connected with SA4+, then is gone out by SA4+ into SA4-；Pole polarity is arranged as NS arrangement after opposite detection coil is powered, and first
Polarity arrangement after Air conduct measurement coil (3) and second channel detection coil (4) energization in four stator poles is followed successively by NNSS
Mode；
It is characterized in that, switched reluctance machines (0) initialization is based on first passage detection coil (3) or second in control method
Air conduct measurement coil (4) works, and the location estimation redundant fault-tolerant control method includes the following steps:
Step A. three-phase totally 6 groups of detection coils SA1+, SA3- on switched reluctance machines (0), SA2+, SA4-, SB1+, SB3-,
SB2+, SB4-, SC1+, SC3- and SC2+, SC4- inject high-frequency square-wave signal simultaneously, subsequently into step B；
Step B. is based on passing through sampling resistor for the operation of switched reluctance machines (0) detection coil injection high-frequency square-wave signal
Sampling obtains the injection response current in switched reluctance machines (0) detection coil, subsequently into step C；
Step C. successively passes through diode peak detecting circuit and filter circuit for the injection response current in detection coil,
The envelope signal for obtaining injection response current, subsequently into step D；
Step D. judges whether envelope signal is within the scope of default reasonable signal, is, enters step F；Deny entering step
E；
Whether step E. detection phase winding coil (1) breaks down, and switches switched reluctance machines (0) and be based on another Air conduct measurement
Coil works, subsequently into step F；
Step F. executes rotor position estimate operation, subsequently into step G；
Above-mentioned steps F includes the following steps:
Step F1. is inverted for envelope signal, obtains corresponding inductance value LA, and choose A phase and the unsaturated inductance of C phase
Upper intersection value as inductance threshold values LTH, subsequently into step F2；
Step F2. judges the working condition of switched reluctance machines (0) at this time, if switched reluctance machines (0) are in undersaturated condition
When operation, then F3 is entered step；If entering step F4 when switched reluctance machines (0) operation in a saturated state；
Step F3. is in unloaded or light running, by comparing unsaturated inductance value LAWith inductance threshold values LTHSize works as LA≥LTH
When, obtained pulse realizes the standing start of switched reluctance machines directly as the open signal of B phase, in addition to this gained
It will not change to the position of the adjacent falling edges of pulse, an electric period differed between adjacent falling edges, i.e., 45 degree, passes through record
The time of adjacent falling edges seeks revolving speed and estimates rotor-position；
Step F4. is in saturation operation, by comparing pulsactor value LASWith inductance threshold values LTHSize works as LAS≥LTHWhen, gained
The pulse arrived is directly as the open signal of B phase, this wants narrow when opening section compared to unsaturation operation, but same satisfaction switch
The standing start requirement of reluctance motor, it is acquired when in addition to this adjacent falling edges position of acquired pulse is run with unsaturation
Pulse falling edge position consistency, by record adjacent falling edges time to seek revolving speed and estimate rotor-position, have full
With the general-purpose capability with location estimation when unsaturation operation；
Step G., as a result, successively through drive and control of electric machine, driving circuit, power inverter, realizes needle according to rotor position estimate
Control to switched reluctance machines (0).
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| CN110022098B (en) * | 2019-02-12 | 2020-11-06 | 湖南科技大学 | Switched reluctance motor position sensorless control method and device based on phase inductance unsaturated zone positioning |
| CN110176880A (en) * | 2019-06-05 | 2019-08-27 | 南京航空航天大学 | A kind of electric excitation biconvex electrode electric machine Rotor position self-sensing device and detection method |
| CN110365275B (en) * | 2019-08-06 | 2021-03-02 | 南京信息工程大学 | Method for controlling high-speed operation of switched reluctance motor without position sensor |
| CN115001220B (en) * | 2022-06-30 | 2024-07-12 | 天津工业大学 | Planar inductance coil for detecting position of motor rotor |
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| US5537019A (en) * | 1995-03-14 | 1996-07-16 | A. O. Smith Corporation | Switched reluctance motor providing rotor position detection at high speeds without a separate rotor shaft position sensor |
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| US5537019A (en) * | 1995-03-14 | 1996-07-16 | A. O. Smith Corporation | Switched reluctance motor providing rotor position detection at high speeds without a separate rotor shaft position sensor |
| CN104167962A (en) * | 2013-05-20 | 2014-11-26 | 捷和电机制品(深圳)有限公司 | Device and method for stating switched reluctance motor without position sensor |
| CN105262383A (en) * | 2015-10-13 | 2016-01-20 | 南京信息工程大学 | Rotor rotating speed/position detecting method of aero-switch reluctance starting/power generator |
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| CN109194083A (en) | 2019-01-11 |
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