CN108429499B - Self-excitation High speed SRM power converter system - Google Patents
Self-excitation High speed SRM power converter system Download PDFInfo
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- CN108429499B CN108429499B CN201810242716.0A CN201810242716A CN108429499B CN 108429499 B CN108429499 B CN 108429499B CN 201810242716 A CN201810242716 A CN 201810242716A CN 108429499 B CN108429499 B CN 108429499B
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- power conversion
- diode
- conversion branch
- power
- phase winding
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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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
-
- 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
- H02P25/092—Converters specially adapted for controlling reluctance motors
- H02P25/0925—Converters specially adapted for controlling reluctance motors wherein the converter comprises only one switch per phase
-
- 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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
-
- 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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/38—Self-excitation by current derived from rectification of both output voltage and output current of generator
Abstract
Self-excitation High speed SRM power converter system, it is formed in parallel by multiple power conversion branches and output capacitor, compared with the prior art, its structure is very simple, every phase winding is only by a switch controlled, it is easy to control, and the power conversion branch structure of every phase winding is identical, scalability is strong, when certain phase winding works, the switching tube closure conducting excitation of power conversion branch where it first, is shifted magnetic energy by a transformer after disconnection and is exported, while the simple structure and control can according to need power generation or the operation of electronic operating condition；In addition, respectively power conversion branch works independently, is worked at the same time to be suitable for two-phase winding, enrich switched reluctance machines operational mode；Each volume of transformer weight is reduced under the conditions of high-speed cruising, that is, high frequency conversion；So be very suitable to the switched reluctance motor system application of all kinds of small power high speeds operation, for example fields such as aero dynamo, automobile current generator, field construction power generation/power driven system.
Description
Technical field
The present invention relates to switched reluctance machines fields, and in particular to a kind of self-excitation structure suitable for small power high speed operation
Power converter of switch reluctance motor and its control method.
Background technique
Switched reluctance machines structure simple rigid, without winding, without permanent magnet on rotor, the pressure that radiates is small, high reliablity, system
Make low in cost, a phase winding, which does not work not, in the middle influences the normal work of other phase windings, and fault-tolerance is strong, has wide answer
Use prospect.
Switched reluctance machines are generally symmetrically distributed in stator salient poles by multiple phase windings, according to salient pole between rotor and
The relative position of groove determines that the phase winding being specifically powered, each phase winding distinguish work according to opposite rotor position information timesharing
Make；When as generator work, every phase winding is generally divided into excitation and two big stages of power generation when working, in winding inductance maximum area
Be powered excitation first before and after domain, and excitation stage motor phase windings absorb the electric energy storage magnetic energy of external field power supply, subsequent basis
Real-time rotor position information terminates the excitation stage and the change of current enters power generating stage, and it is defeated that the magnetic energy stored in phase winding is converted into electric energy
Out, electric current is down to zero completion work when entering winding inductance Minimum Area, intermediate when necessary to be re-introduced into freewheeling period to improve
Power generating stage initial current；When as electric motor operation, the main body of every phase winding work is the excitation stage, in winding inductance minimum
Region or inductance rise the excitation that is powered when starting, and complete work wait shutdown excitation before and after entering winding inductance maximum region, necessary
When after excitation provide continuous current circuit by winding remaining magnetic energy discharge.
The excitation of switched reluctance machines, afterflow, power generation will control in fact around the operation for the translation circuit for connecting its winding
It is existing, there is no winding translation circuit, the operation of switched reluctance machines is not just known where to begin, so converter is significant.
When switch reluctance generator is run, existing changer system, in the excitation stage, field power supply is much all realized certainly
Mode is encouraged, is not necessarily to frequently replace the manual working of battery or charging under separate excitation mode in this way, but existing many self-excitation modes
The mode for increasing excitation circuit is selected the complexity of structure and control to be increased, especially in certain fields although variable excitation
To the occasion of maximum power output and non-primary requirement.
The power converter circuit of current switch reluctance motor, most typical for asymmetrical half-bridge structure, advantage is very
Obviously, it is in the industry cycle widely applied, but switching device used in the unsteady flow main circuit of the structure is excessive.
The considerable new power converter circuit occurred at present does not adapt to have simultaneously more than a phase winding while work
The occasion of work, and consider the overall efficiency of motor, the magnetic pole of actually most of existing switched reluctance machines is overlapped system
Number is all greater than zero, that is to say, that when being worked according to rotor position information standard, while being frequently present of more than a phase winding
Work operating condition, especially greater than or equal to four phase windings switched reluctance machines, polyphase windings work at the same time, when a such as phase excitation
Another phase power generation etc. then considers this point in power inverter design, just there is very much realistic meaning.
In certain application fields of switched reluctance motor system, for example high speed aero dynamo, automobile current generator, field are without electricity
The power generation of source area and it is driven by electricity etc. occasion, needed according to different demands, carries out power generation and electronic respectively in different periods
Operation, then, a set of power inverter adapts to power generation and electronic different operating condition simultaneously, then certainly will reduce system cost, reduce
Volume weight, especially control model, since controller is without complicating, certainly will have extensive prospect if in addition.
Summary of the invention
According to above background technique, present invention proposes a kind of only one switching tubes of every phase winding, and modularization can
The transformation branch that scalability works independently can take into account the High speed SRM power inverter of power generation and the operation of electronic operating condition
And its regulation method.
The technical solution of the present invention is as follows:
Self-excitation High speed SRM power converter system, by the first power conversion branch, the second power conversion branch
Road, third power conversion branch, capacitor composition, technical characteristic is the first power conversion branch, second power
Transformation branch, the third power conversion branch are connected in parallel between the capacitor；
First power conversion branch routes the first phase winding, first switch tube, first diode, the second diode, the first change
Depressor composition, technical characteristic is first phase winding one end and the first switch tube anode, first transformer one
The connection of secondary side winding one end, the first phase winding other end and the first diode cathode, second diode cathode, second
Power conversion branch anode, third power conversion branch anode, capacitor anode connection, and just as the first power conversion branch
Pole, first diode anode are connect with the first transformer primary winding other end, the second diode anode and the first transformer
The connection of secondary side winding one end, the first Circuit Fault on Secondary Transformer winding other end and first switch tube cathode, the second power conversion branch
Road cathode, third power conversion branch cathode, capacitor anode connection, and as the first power conversion branch negative pole end；
The internal structure and the first power conversion branch internal junction of second power conversion branch and third power conversion branch
Structure is identical, and their second switch, third switching tube correspond to first switch tube, the second phase winding, third phase around
Corresponding first phase winding of group, corresponding first transformer of the second transformer, third transformer, third diode, the 5th diode pair
First diode is answered, the 4th diode, the 6th diode pair answer the second diode, and corresponding device is identical；
First transformer, the second transformer, the respective first side winding of third transformer and secondary side winding polarity is opposite,
The ratio between the number of turns is 1.
The control method of self-excitation High speed SRM power converter system of the invention are as follows: power conversion of the present invention
All switching tubes are quick full-control type power electronic three terminal device in device, and original state is off-state；All switching tubes
Control by special controller according to detection signal output realize；
When switched reluctance machines are run as generator, according to switch reluctance generator operation logic, in conjunction with rotor position
Confidence breath, when detecting that the first phase winding need to be powered on, first closure conducting first switch tube, capacitor both ends power supply to
For first phase winding for electrical excitation, this is the excitation stage, at the end of the rotor position information excitation stage, disconnects first switch
Pipe, the magnetic energy stored in the first phase winding flow through the first transformer primary winding through first diode, and with the first transformer
It is exported after secondary side winding coupling through the second diode and charges and export to capacitor；Power conversion branch where remaining phase winding
Working principle be identical with this, repeat no more；
When switched reluctance machines are as motor running, according to switched reluctance motor operation logic, in conjunction with motor
Operating condition lower rotor part location information carries out the switch motion of each power conversion branch unique one pipe, with control when generator operating condition
Molding formula is identical, and the rotor-position point of only specific switch motion is different, to be powered and be tied due to excitation when as motor running
The release of corresponding phase winding magnetic energy and feedback power after beam, so having energy regeneration function.
Technical effect of the invention mainly has:
(1) power converter circuit of the invention, every phase winding only need a switching tube, simplify structure, reduce
Complexity is controlled, the burden of controller is alleviated.
(2) modular structure, power conversion branch where each phase winding can work independently, not interfere with each other, to adapt to
The occasion for having power conversion branch where two phase windings to work at the same time simultaneously, scalability are strong.
(3) it present invention is more particularly directed towards the switched reluctance machines of high-speed cruising, works under each transformer high frequency, is bound to subtract
Small transformers volume weight, save the cost, in the switched reluctance motor system of especially long-term high-speed cruising.
(4) generator and motor working condition have been adapted to simultaneously, control model is identical, and the requirement to controller is relatively low, can
By property height.
Detailed description of the invention
Fig. 1 show self-excitation High speed SRM power converter system structure chart of the invention.
Specific embodiment
The three-phase windings power converter of switch reluctance motor of the present embodiment as shown in Fig. 1, by the first power conversion branch
Road 1, the second power conversion branch 2, third power conversion branch 3, capacitor C composition, the first power conversion branch 1, the second function
Rate transformation branch 2, third power conversion branch 3 are connected in parallel between capacitor C；Capacitor both ends are to load with the external world
The both ends of (when generator is run) or power supply (when motor running) connection；
First power conversion branch 1 is by the first phase winding M, first switch tube V1, first diode D1, the second diode
D2, the first transformer T1 composition, first one end phase winding M and first switch tube V1 anode, the first transformer T1 first side winding a
One end connection, the first phase winding M other end and first diode D1 cathode, the second diode D2 cathode, the second power conversion branch
2 anode of road, 3 anode of third power conversion branch, the connection of capacitor C anode, and it is positive as the first power conversion branch 1, the
One diode D1 anode is connect with the first transformer T1 first side winding a other end, the second diode D2 anode and the first transformation
The connection of the one end secondary side winding b device T1, the first transformer T1 secondary side winding b other end and first switch tube V1 cathode, second
2 cathode of power conversion branch, 3 cathode of third power conversion branch, the connection of capacitor C cathode, and as the first power conversion branch
1 negative pole end of road；
Inside the internal structure and the first power conversion branch 1 of second power conversion branch 2 and third power conversion branch 3
Structure is identical, and their second switch V2, third switching tube V3 correspond to first switch tube V1, the second phase winding N,
The corresponding corresponding first transformer T1 of first phase winding M, the second transformer T2, third transformer T3 of third phase winding P, the three or two pole
Pipe D3, the 5th diode D5 correspond to first diode D1, the corresponding second diode D2 of the 4th diode D4, the 6th diode D6,
Corresponding device is identical；All switching tubes are IGBT or GTR or power MOSFET or silicon carbide or gallium nitride device；
First transformer T1, the second transformer T2, the respective first side winding of third transformer T3 and secondary side winding pole
Property the ratio between opposite, the number of turns be 1.
The control method of self-excitation High speed SRM power converter system of the invention are as follows: institute in power inverter
Having switching tube original state is off-state；The control of all switching tubes is by special controller according to detection signal output
It realizes；
When switched reluctance machines are run as generator, according to switch reluctance generator operation logic, in conjunction with rotor position
Confidence breath, when detecting that the first phase winding M need to be powered on, closure conducting first switch tube V1 first, the both ends capacitor C electricity
Source is to the first phase winding M for electrical excitation, and circuit is mono- C of C-M-V1, this is the excitation stage, according to the rotor position information excitation stage
At the end of, first switch tube V1 is disconnected, the magnetic energy stored in the first phase winding M flows through the first transformer T1 through first diode D1
First side winding a, and export after being coupled with the first transformer T1 secondary side winding b through the second diode D2 and charge to capacitor C
And export, circuit is respectively as follows: M-a-D1-M, b-D2-C-b；The working principle of power conversion branch where remaining phase winding and this
It is identical, it repeats no more；Due to not interfere with each other between power conversion branch and other power conversion branches where each phase winding, institute
Can work at the same time, with specific reference to rotor position information, general rotor salient pole overlap coefficient is greater than zero, i.e., in the presence of simultaneously two
Phase winding works, for example a phase winding excitation stage, adjacent phase winding power generating stage.
When switched reluctance machines are as motor running, according to switched reluctance motor operation logic, in conjunction with motor
Operating condition lower rotor part location information carries out the switch motion of each power conversion branch unique one pipe, with control when generator operating condition
Molding formula is identical, and the rotor-position point of only specific switch motion is different, to be powered and be tied due to excitation when as motor running
The release of corresponding phase winding magnetic energy and feedback power after beam, so having energy regeneration function.
When running as motor and generator, rated speed is 30000 revs/min, and switched reluctance machines are three-phase
12/8 structure, high-speed cruising, the commutation change of current work of higher frequency, so that each transformer high-frequency work, can reduce volume weight
Amount, reduces cost.
Claims (2)
1. encourage oneself High speed SRM power converter system, by the first power conversion branch, the second power conversion branch,
Third power conversion branch, capacitor composition, technical characteristic are that the first power conversion branch, second power become
It changes branch, the third power conversion branch, be connected in parallel between the capacitor；
First power conversion branch routes the first phase winding, first switch tube, first diode, the second diode, the first transformer
Composition, first phase winding one end are connected with the first switch tube anode, first transformer primary winding one end,
The first phase winding other end and the first diode cathode, second diode cathode, the second power conversion branch anode,
Third power conversion branch anode, capacitor anode connection, and as the first power conversion branch anode, first diode anode
It is connect with the first transformer primary winding other end, the second diode anode and first Circuit Fault on Secondary Transformer winding one end connect
It connects, the first Circuit Fault on Secondary Transformer winding other end and first switch tube cathode, the second power conversion branch cathode, third power become
Branch cathode, capacitor anode connection are changed, and as the first power conversion branch negative pole end；
Second power conversion branch and the internal structure of third power conversion branch and the first power conversion branch internal structure are complete
It is exactly the same, and their second switch, third switching tube correspond to first switch tube, the second phase winding, third phase winding pair
Answer the first phase winding, corresponding first transformer of the second transformer, third transformer, third diode, the 5th diode pair answer the
One diode, the 4th diode, the 6th diode pair answer the second diode, and corresponding device is identical；
First transformer, the second transformer, the respective first side winding of third transformer and secondary side winding polarity is opposite, the number of turns
The ratio between be 1.
2. the control method of self-excitation High speed SRM power converter system according to claim 1 are as follows: power
All switching tubes are quick full-control type power electronic three terminal device in converter, and original state is off-state；It is all to open
The control for closing pipe is realized by special controller according to detection signal output；
When switched reluctance machines are run as generator, according to switch reluctance generator operation logic, believe in conjunction with rotor-position
Breath, when detecting that the first phase winding need to be powered on, closure conducting first switch tube first, capacitor both ends power supply is to first
For phase winding for electrical excitation, this is the excitation stage, at the end of the rotor position information excitation stage, disconnects first switch tube, the
The magnetic energy stored in one phase winding flows through the first transformer primary winding through first diode, and with the first Circuit Fault on Secondary Transformer
It is exported after winding coupled through the second diode and charges and export to capacitor；The work of power conversion branch where remaining phase winding
Principle is identical with this；
When switched reluctance machines are as motor running, according to switched reluctance motor operation logic, in conjunction with motor working condition
Lower rotor part location information carries out the switch motion of each power conversion branch unique one pipe, with control mould when generator operating condition
Formula is identical, and the rotor-position point of only specific switch motion is different, thus when as motor running, after excitation power supply
The accordingly release of phase winding magnetic energy and feedback power, so having energy regeneration function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810242716.0A CN108429499B (en) | 2018-03-21 | 2018-03-21 | Self-excitation High speed SRM power converter system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810242716.0A CN108429499B (en) | 2018-03-21 | 2018-03-21 | Self-excitation High speed SRM power converter system |
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| Publication Number | Publication Date |
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| CN108429499A CN108429499A (en) | 2018-08-21 |
| CN108429499B true CN108429499B (en) | 2019-09-10 |
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| CN110784136B (en) * | 2019-10-17 | 2021-01-08 | 中国计量大学 | Switch reluctance generator current transformation system capable of self-exciting to change excitation voltage to generate voltage |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013004218A1 (en) * | 2013-03-11 | 2014-09-11 | Man Truck & Bus Ag | Circuit arrangement for operating a reluctance machine |
| CN105429538A (en) * | 2016-01-04 | 2016-03-23 | 中国计量学院 | Switch magnetic resistance aerogenerator power converter system |
| CN107171606A (en) * | 2017-07-06 | 2017-09-15 | 中国计量大学 | Small-power Multifunctional three-phase switched reluctance motor system and its control method |
| CN107196576A (en) * | 2017-07-06 | 2017-09-22 | 中国计量大学 | A kind of power converter of switch reluctance motor and its control method |
-
2018
- 2018-03-21 CN CN201810242716.0A patent/CN108429499B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013004218A1 (en) * | 2013-03-11 | 2014-09-11 | Man Truck & Bus Ag | Circuit arrangement for operating a reluctance machine |
| CN105429538A (en) * | 2016-01-04 | 2016-03-23 | 中国计量学院 | Switch magnetic resistance aerogenerator power converter system |
| CN107171606A (en) * | 2017-07-06 | 2017-09-15 | 中国计量大学 | Small-power Multifunctional three-phase switched reluctance motor system and its control method |
| CN107196576A (en) * | 2017-07-06 | 2017-09-22 | 中国计量大学 | A kind of power converter of switch reluctance motor and its control method |
Non-Patent Citations (1)
| Title |
|---|
| 开关磁阻起动/发电机设计方法研究;宋科璞 等;《微特电机》;20120229;第40卷(第2期);第22-25页 * |
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| CN108429499A (en) | 2018-08-21 |
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