CN107026589A - Low pulse self-excitation switch reluctance generator interleaved converter and its method of controlling switch - Google Patents
Low pulse self-excitation switch reluctance generator interleaved converter and its method of controlling switch Download PDFInfo
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- CN107026589A CN107026589A CN201710273137.8A CN201710273137A CN107026589A CN 107026589 A CN107026589 A CN 107026589A CN 201710273137 A CN201710273137 A CN 201710273137A CN 107026589 A CN107026589 A CN 107026589A
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- 230000005284 excitation Effects 0.000 claims abstract description 151
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- 239000003990 capacitor Substances 0.000 claims description 41
- 230000005611 electricity Effects 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 2
- 230000010349 pulsation Effects 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007600 charging Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
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Classifications
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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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/105—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for increasing the stability
-
- 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
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/107—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for limiting effects of overloads
-
- 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
- H02P9/305—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 controlling voltage
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- Control Of Eletrric Generators (AREA)
Abstract
Low pulse self-excitation switch reluctance generator interleaved converter and its method of controlling switch, converter is by generating main circuit, excitation power supply, staggeredly convert main circuit, excitation main circuit etc. is constituted, during generator windings excitation in generating main circuit, powered during starting by excitation power supply, after starting electric energy is sent in itself powered excitation as the excitation main circuit of input by coming from for adjustable excited voltage, the staggeredly action that staggeredly conversion main circuit passes through switching tube, realize the function of being reduced to generation current pulsation rate, raise after generating voltage and export simultaneously, total system is simple in construction, performance is good, suitable for all kinds of switch reluctance generator application scenarios.
Description
Technical field
The present invention relates to switched reluctance machines field, and in particular to a kind of change of low pulse self-excitation type switch reluctance generator
Flow device circuit topology system and its control method.
Background technology
Switched reluctance machines are a kind of strong, the inexpensive motor kinds of simple in construction, firm, fault-tolerance；Switching magnetic-resistance is sent out
Motor is a kind of emerging generator applied in fields such as wind-power electricity generation, diesel engine unit generating, automobile current generators；
The changer system of switch reluctance generator is the core component in its work；
Conventional switch reluctance generator power inverter is that generating main circuit structure is asymmetrical half-bridge formula structure, the knot
Switching device is more needed for structure, if developing the generating main circuit of less switching device, and simplifying structure reduces cost, and in performance
Do not lack, then must be meaningful；
The torque pulsation problem of switched reluctance machines be always perplex switched reluctance machines application field bottleneck problem it
One, the pulsation that one of root of torque pulsation comes from winding current is excessive, how to reduce the pulsation rate of winding current in work,
It is one of industry important research direction；
The maximum elelctrochemical power generation fan-out capability of any electricity generation system is always important topic, switch reluctance generator also not example
Outside, for example wind-powered electricity generation field, in order to reduce installation cost, it is desirable to which volume weight is as far as possible small, also for example automotive field, it is desirable to which it generates electricity
Machine system bulk weight also must be small, is to need higher power density in a word, and this must be very significant thing；
After the electric energy output of switch reluctance generator, directly sent, it is necessary to connect increasing apparatus with improving in many fields
Magnitude of voltage, then again row connect application system, if the output end converter system that the increasing apparatus can be with switch reluctance generator
Integration is into double gain then simplifies structure, reduces cost, also certainly will be meaningful；
In the excitation mode of switch reluctance generator, all there is each obvious determination in traditional self-excitation type and separated exciting,
Self-excitation type current fluctuation is big, and separated exciting need to frequently change separate excitation battery, if can overcome as above respective shortcoming, them are utilized again
Advantage, while it is variable to extend excitation voltage, then certainly will improve performance, and increase controllability, flexibility.
The content of the invention
Background technology more than, the present invention just propose a kind of simple in construction, multipurpose interlock conversion rise pressure drop fluctuation,
The switch reluctance generator converter and its control method flexibly encouraged oneself.
The technical scheme is that：
Low pulse encourage oneself switch reluctance generator interleaved converter, by generating main circuit, excitation power supply, generating capacitor,
Staggeredly conversion main circuit, bus capacitor, excitation main circuit are constituted, it is characterized in that, the generating main circuit input two ends connection
The excitation power supply exports two ends, and generating main circuit output two ends are connected staggeredly to be become described in the generating capacitor two ends and connection
Change owner circuit inputs two ends, staggeredly converts main circuit output two ends and connects the bus capacitor two ends and connect the excitation master
Circuit inputs two ends, excitation main circuit output two ends connection excitation power input two ends；
Switch reluctance generator is four phase windings；
Generating main circuit is made up of two generating branch circuit parallel connection connections, and two non-conterminous phases are connected in each generating branch road
Winding, specifically by first switch pipe, second switch pipe, the 3rd switching tube, the first diode, the second diode, the 3rd diode,
First phase winding, the second phase winding composition, it is characterized in that, first phase winding and second phase winding are sent out in switching magnetic-resistance
It is non-conterminous on motor stator, it is separated by, the first switch tube anode inputs positive terminal as generating main circuit, and first switch pipe is cloudy
Pole is connected with the 3rd diode cathode, first phase winding one end, second phase winding one end, the first phase winding other end and institute
Second switch tube anode, first diode anode connection are stated, the first diode cathode connects with second diode cathode
Connect and as generating main circuit output cathode end, the second phase winding other end and the second diode anode, the 3rd switching tube
Anode is connected, and second switch tube cathode, the 3rd diode anode, the 3rd switch tube cathode short circuit are simultaneously inputted as generating main circuit
The common negative pole end with output；
Excitation power supply is made up of battery and excitation diode, it is characterized in that, the battery positive voltage connects the excitation
Diode anode, excitation diode cathode and battery terminal negative are positive and negative extreme respectively as the input of excitation power supply, are also simultaneously
Output is positive and negative extreme；
Generating capacitor positive and negative end connects generating main circuit output positive and negative end respectively, while also connection is handed over respectively
Mistake conversion main circuit input positive and negative end；
Staggeredly conversion main circuit staggeredly converts branch circuit parallel connection connection by two and constituted, and each staggeredly conversion branch route the first electricity
Sense, the second inductance, the 3rd inductance, the 4th switching tube, the 5th switching tube, three-winding transformer, the 4th diode, the five or two pole
Pipe, the 6th diode, the 7th diode composition, it is characterized in that, described first inductance one end is inputted as staggeredly conversion main circuit
Positive terminal, the first inductance other end connects described second inductance one end, described 3rd inductance one end, the three-winding transformer
First winding one end and second winding one end, first winding one end of the three-winding transformer and second winding one end polarity phase
Instead, the second inductance other end is connected with the first winding other end of the described 4th switch tube anode, three-winding transformer, the 3rd electricity
The sense other end is connected with the second winding other end of the described 5th switch tube anode, three-winding transformer, the 4th switch tube cathode
With the 5th switch tube cathode short circuit and it is used as staggeredly conversion main circuit input negative pole end, the first winding of three-winding transformer and the
Two windings are as the primary side of the three-winding transformer, and the secondary side of three-winding transformer is made up of its tertiary winding, three winding
Tertiary winding one end of transformer connects the 4th diode anode and the 5th diode cathode, three-winding transformer
The tertiary winding other end connects the 6th diode anode and the 7th diode cathode, the 4th diode cathode and the 6th
Diode cathode short circuit is simultaneously used as staggeredly conversion main circuit output cathode end connection bus capacitor positive terminal and the main electricity of excitation
Road inputs positive terminal, the 5th diode anode and the 7th diode anode short circuit and as staggeredly conversion main circuit output negative pole end
Connect bus capacitor negative pole end and excitation main circuit input negative pole end；
Excitation main circuit is by the 6th switching tube, the 7th switching tube, the 8th diode, the 9th diode, the 4th inductance, electric capacity
Device is constituted, it is characterized in that, the 6th switch tube anode inputs positive terminal, the 6th switch tube cathode connection as excitation main circuit
8th diode cathode and described 4th inductance one end, the 4th inductance other end connection the 7th switch tube anode and institute
The 9th diode anode is stated, the 9th diode cathode connects the capacitor anode and as excitation main circuit output cathode end,
8th diode anode, the 7th switch tube cathode, capacitor anode short circuit are simultaneously used as the input of excitation main circuit and output negative pole end.
The method of controlling switch of low pulse self-excitation switch reluctance generator interleaved converter, it is characterized in that,
According to the operation principle of four phase switch reluctance generators, it is divided into excitation stage and power generating stage in work per phase winding
Two megastages, when a phase winding is in the excitation stage, its adjacent phase winding is in power generating stage, so the branch road that each generates electricity
Two phase windings of middle connection are not adjacent, it is ensured that an only phase winding is in work in any instantaneous each generating branch road；
When switch reluctance generator is moved, according to switch reluctance generator rotor position information, when generating branch road
First phase winding need to be powered excitation when, closure first switch pipe and second switch pipe, if the second phase winding needs excitation then to close
Close first switch pipe and the 3rd switching tube, battery is via excitation diode to needing the first phase winding or the second phase winding of excitation
Power supply excitation, this is the excitation stage；At the end for the treatment of the excitation stage according to rotor position information, disconnect first closed before this and open
Close pipe and second switch pipe, or first switch pipe and the 3rd switching tube, before this if the first phase winding excitation, its magnetic stored
It can be exported via the first diode and the 3rd diode, if the second phase winding excitation, the magnetic energy that it is stored is via the two or two pole
Pipe and the 3rd diode output, this is power generating stage, detect during this period in another generating branch road with being in hair
When the first phase winding or the adjacent phase winding of the second phase winding of the preceding generating branch road in electric stage need to enter the excitation stage, send out herein
Electric branch road repeats the switch controlled mode in excitation stage in foregoing generating branch road, and subsequent power generating stage is also identical；
After the dynamic beginning of switch reluctance generator, generating capacitor voltage at both ends gradually rises, and reaches and staggeredly becomes change owner electricity
After road is to the requirement of input terminal voltage, staggeredly converts main circuit and start working, in two staggeredly conversion branch road being connected in parallel
Two the 4th switching tubes, i.e., first the 4th switching tube and second the 4th switching tube, two the 5th switching tubes, i.e., first
Five switching tubes and second the 5th switching tube, the mode of operation of this four switching tubes is：
Duty cycle of switching synchronously changes in four switching tube work, identical all the time, and dutycycle is consistently greater than 0.5,
And less than 1；
The false relation of the 4th switching tube and the 5th switching tube in each staggeredly conversion branch road is：4th switching tube first half
Cycle, in chronological sequence sequence switch state was identical with the 5th switching tube later half cycle, and the 4th switching tube later half cycle opened with the 5th
Closing pipe first half cycle, in chronological sequence sequence switch state is identical；
The false relation of two fourth switching tubes of the difference staggeredly in conversion branch roads be：Half cycle before first the 4th switching tube
Before phase and second the 4th switching tube later half cycle, and first the 4th switching tube later half cycle and second the 4th switching tube
After half cycle interlocks in chronological order, in the respective front and rear half period of two the 4th switching tubes, then will be front and rear in the respective half period
1/4 cycle exchange in chronological order staggeredly；Difference staggeredly converts the false relation and two of two the 5th switching tubes in branch road
Individual 4th switching tube false relation is identical；
By adjusting the 4th switching tube and the 5th switching tube identical dutycycle size, change staggeredly conversion main circuit output
Voltage swing；
It is after busbar voltage reaches more than excitation main circuit input terminal voltage required value, to encourage after bus capacitor both end voltage
Magnetic main circuit is started working, and when excitation main circuit output voltage is higher than battery both end voltage, excitation power supply is stopped, i.e.,
By power supply of the excitation main circuit as switch reluctance generator each phase winding excitation stage, the size of excitation voltage is according to bus
Capacitor output load needs, by realizing its 6th switching tube and the regulation of the 7th switching tube, to be specifically divided into two kinds of Working moulds
Formula：
Pattern one, the 7th switching tube is held off, adjust the 6th switching tube dutycycle, dutycycle be less than 1 and
During more than 0, the output voltage values that can change excitation main circuit are less than input voltage value, and change with change in duty cycle, duty
Excitation main circuit output voltage values and input voltage value are equal during than equal to 1；
Pattern two, the 6th switching tube remains closed conducting state, and the dutycycle of the 7th switching tube of regulation is less than 1 and is more than
0, the output voltage values that can change excitation main circuit are more than input voltage value, and change with change in duty cycle；
Work as proceed-to-send, i.e. excitation main circuit to provide after excitation as field power supply, in the work of generating main circuit, detect
When the winding current that the excitation stage terminates into before power generating stage can not reach necessary requirement, first switch pipe is now only turned off,
If the first phase winding, then the first phase winding is via second switch pipe and the 3rd diode continuousing flow, and this is freewheeling period, treats electricity
Stream is climbed to after desirable value, turns off second switch pipe, if to electric current behind freewheeling period correspondence maximum rotor position not yet
Reach that desirable value still turns off second switch pipe, into power generating stage；If the second phase winding be then via the 3rd switching tube and
3rd diode continuousing flow, electric current, which reaches desirable value or reaches the 3rd switching tube of shut-off after afterflow maximum position, enters power generating stage.
The technique effect of the present invention mainly has：
Under the generating main circuit structure of the present invention, (1) relatively conventional asymmetrical half-bridge formula structure reduces 2 switching tubes
With 2 diode consumptions, cost is saved；(2) simple in construction but performance does not subtract, and can also be needed according to system and increase nothing
The freewheeling period of back-pressure, fast lifting winding current；(3) four phase switch reluctance generators, generating main circuit of the invention are directed to
Structure, when a phase winding excitation, an adjacent phase winding generate electricity, the two does not interfere with each other.
Under the staggeredly conversion main circuit structure and its method of controlling switch of the present invention, (1) causes generating main circuit output electricity
Stream pulsation rate reduces 50%, and especially for big-and-middle-sized switch reluctance generator, the reduction of winding current pulsation rate is reduced
Under the pressure of switch reluctance generator power train, same machine set system, bigger specified mechanical load-bearing capability is suitable for, is improved
Generating capacity；(2) reduction of pulsation of current rate, certainly will also raise rated current, improve system effectiveness；(3) interlock change
Change owner circuit output voltage is higher than input voltage, while serving the effect of boosting DC/DC converters, eliminates certain fields special
The DC/DC converters of door；(4) the conversion main circuit that interlocks can adjust output voltage values size within the specific limits, improve this
The adaptive surface of invention；(5) conversion two of main circuit that interlocks staggeredly converts the connected mode of branch circuit parallel connection, is suitable for relatively low pressure
The load scenarios of high current.
Lifting busbar voltage can be achieved as excitation voltage in the excitation main circuit of the present invention, (1), and scope is wide, adaptation is wide；
(2) isolation link is included in main circuit due to staggeredly converting, excitation main circuit of the invention can be simplified without isolation link
Structure.
Brief description of the drawings
Fig. 1 show the low pulse self-excitation switch reluctance generator interleaved converter circuit structure diagram of the present invention.
The staggeredly conversion main circuit switch that Fig. 2 is shown in the present invention interlocks and input current waveform figure.
In Fig. 1：1st, generating main circuit, 2, excitation power supply, 3, staggeredly conversion main circuit, 4, excitation main circuit.
Embodiment
Low pulse self-excitation switch reluctance generator interleaved converter, by generating main circuit 1, excitation power supply 2, generating capacitor
Cs, staggeredly conversion main circuit 3, bus capacitor Cm, excitation main circuit 4 are constituted, the input of generating main circuit 1 two ends connection excitation electricity
Source 2 exports two ends, and the output of generating main circuit 1 two ends connect generating capacitor Cs two ends and connect staggeredly conversion main circuit 3 and input
Two ends, staggeredly convert the output of main circuit 3 two ends connection bus capacitor Cm two ends and connect the input of excitation main circuit 4 two ends, encourage
The output of magnetic main circuit 4 two ends connection excitation power supply 2 inputs two ends, as shown in Figure 1；
Switch reluctance generator is four phase windings；
Generating main circuit 1 is made up of two generating branch circuit parallel connection connections, and connection two is non-conterminous in each generating branch road
Phase winding, specifically by first switch pipe V1/V4, second switch pipe V2/V5, the 3rd switching tube V3/V6, the first diode D1/D4,
Second diode D2/D5, the 3rd diode D3/D6, the first phase winding A/B, second are in C/D compositions, a generating branch road
Connect and the first phase winding B for being separated by and the is connected in the first phase winding A and the second phase winding C that are separated by, another generating branch road
Two-phase winding D, four phase windings of switch reluctance generator are distributed on stator by A-B-C-D-A order, and generating branch road is specific
Annexation is, first switch pipe V1/V4 anodes input positive terminal as generating main circuit 1, first switch pipe V1/V4 negative electrodes with
3rd diode D3/D6 negative electrodes, first phase winding A/B one end, the connection of second phase winding C/D one end, the first phase winding A/B are another
End is connected with second switch pipe V2/V5 anodes, the first diode D1/D4 anodes, the first diode D1/D4 negative electrodes and the two or two pole
Pipe D2/D5 negative electrodes connect and are used as the output cathode end of generating main circuit 1, the second phase winding C/D other ends and the second diode D2/
D5 anodes, the connection of the 3rd switching tube V3/V6 anodes, second switch pipe V2/V5 negative electrodes, the 3rd diode D3/D6 anodes, the 3rd open
Close pipe V3/V6 negative electrodes short circuit and input and export common negative pole end as generating main circuit 1；It is corresponding in two generating branch roads
The specifications and models of whole elements are identical；
Excitation power supply 2 is made up of battery X and excitation diode Dq, battery X positive poles connection excitation diode Dq anodes,
Excitation diode Dq negative electrodes and battery X negative poles are positive and negative extreme respectively as the input of excitation power supply 2, while being also that output is positive and negative
Extremely；
Generating capacitor Cs positive and negative ends connect the output positive and negative end of generating main circuit 1 respectively, while also connecting respectively
Connect staggeredly conversion main circuit 3 input positive and negative end；
Staggeredly conversion main circuit 3 staggeredly converts branch circuit parallel connection connection by two and constituted, and each staggeredly conversion branch route first
Inductance L1/L4, the second inductance L2/L5, the 3rd inductance L3/L6, the 4th switching tube V7/V9, the 5th switching tube V8/V10, three winding
Transformer T1/T2, the 4th diode D7/D11, the 5th diode D8/D12, the 6th diode D9/D13, the 7th diode D10/
D14 is constituted, and first inductance L1/L4 one end connects as staggeredly conversion main circuit 3 input positive terminal, the first inductance L1/L4 other ends
Connect second inductance L2/L5 one end, the 3rd inductance L3/L6 one end, three-winding transformer T1/T2 first winding a one end and second
Winding b one end, three-winding transformer T1/T2 first winding a one end and second winding b one end opposite polarity, the second inductance
The L2/L5 other ends are connected with the 4th switching tube V7/V9 anodes, three-winding transformer the T1/T2 first winding a other ends, and the 3rd
The inductance L3/L6 other ends are connected with the 5th switching tube V8/V10 anodes, three-winding transformer the T1/T2 second winding b other ends,
4th switching tube V7/V9 negative electrodes and the 5th switching tube V8/V10 negative electrodes short circuit simultaneously input negative pole end as staggeredly conversion main circuit 3,
Three-winding transformer T1/T2 the first winding a and the second winding b is used as three-winding transformer T1/T2 primary side, three winding
Transformer T1/T2 secondary side is made up of its tertiary winding c, three-winding transformer T1/T2 tertiary winding c one end connection the 4th
Diode D7/D11 anodes and the 5th diode D8/D12 negative electrodes, three-winding transformer T1/T2 tertiary winding c other ends connection
6th diode D9/D13 anodes and the 7th diode D10/D14 negative electrodes, the 4th diode D7/D11 negative electrodes and the 6th diode
D9/D13 negative electrodes short circuit is simultaneously used as staggeredly conversion main circuit 3 output cathode end connection bus capacitor Cm positive terminals and excitation master
Circuit 4 inputs positive terminal, the 5th diode D8/D12 anodes and the 7th diode D10/D14 anodes short circuit and as staggeredly conversion
The output negative pole end of main circuit 3 connects bus capacitor Cm negative pole ends and the input negative pole end of excitation main circuit 4；Two staggeredly convert
Corresponding whole component specification models are identical in branch road；Three-winding transformer T1/T2 the first winding a and the second winding b
Equal turn numbers；
Excitation main circuit 4 by the 6th switching tube V11, the 7th switching tube V12, the 8th diode D15, the 9th diode D16,
4th inductance L7, capacitor C are constituted, and the 6th switching tube V11 anodes input positive terminal, the 6th switching tube as excitation main circuit 4
V11 negative electrodes connect the 8th diode D15 negative electrodes and the 4th inductance L7 one end, and the 4th inductance L7 other ends connect the 7th switching tube
V12 anodes and the 9th diode D16 anodes, the 9th diode D16 negative electrodes connection capacitor C positive poles are simultaneously used as excitation main circuit 4
Output cathode end, the 8th diode D15 anodes, the 7th switching tube V12 negative electrodes, capacitor C negative poles short circuit are simultaneously used as the main electricity of excitation
Road 4 is inputted and output negative pole end.
The method of controlling switch of the low pulse self-excitation switch reluctance generator interleaved converter of the embodiment of the present invention, according to four
The operation principle of phase switch reluctance generator, is divided into excitation stage and the megastage of power generating stage two, when one per phase winding in work
When phase winding is in the excitation stage, its adjacent phase winding is in power generating stage, so the two-phase connected in each generating branch road
Winding is not adjacent, it is ensured that an only phase winding is in work in any instantaneous each generating branch road, otherwise of the invention
The generating branch road of generating main circuit 1 one will be unable to meet and require, in fact according to existing four phase switch reluctance generators, its overlapping system
Number in the design, will meet a phase winding excitation substantially, the requirement that an adjacent phase winding generates electricity, the present invention be based on this common four
Phase switch reluctance generator；
When switch reluctance generator is moved, according to switch reluctance generator rotor position information, when generating branch road
First phase winding A or B need to be powered excitation when, it is assumed that be the first phase winding A, then close first switch pipe V1 and second switch pipe
V2, if the second phase winding C of the generating branch road needs excitation then to close first switch pipe V1 and the 3rd switching tube V3, battery
X powers excitation via excitation diode Dq to the first phase winding A or the second phase winding C that need excitation, and exciting current path is：X-
Dq-V1-A-V2-X, or X-Dq-V1-C-V3-X, this is the excitation stage；
At the end for the treatment of the above excitation stage according to rotor position information, the first switch pipe V1 and second closed before this is disconnected
Switching tube V2, or first switch pipe V1 and the 3rd switching tube V3, before this if the first phase winding A excitations, its magnetic energy stored
Exported via the first diode D1 and the 3rd diode D3, path is：If A-D1-Cs-D3-A, the second phase winding C excitations, its
The magnetic energy of storage is exported via the second diode D2 and the 3rd diode D3, and path is：C-D2-Cs-D3-C, this is generating rank
Section, detects the first phase winding of the preceding generating branch road with being in power generating stage in another generating branch road during this period
When phase winding B or D adjacent A or the second phase winding C need to enter the excitation stage, in this generating branch road repeats foregoing generating branch road
The switch controlled mode in excitation stage, subsequent power generating stage is also identical；
After the dynamic beginning of switch reluctance generator, generating capacitor Cs both end voltages gradually rise, and reach and staggeredly become change owner
After circuit 3 is to the requirement of input terminal voltage, staggeredly converts main circuit 3 and start working, the battery X rated voltages of the present embodiment
UXN less than rated generation voltage be generating capacitor Cs both end voltages UCsN, UCsN again be less than specified busbar voltage UCmN (according to
Follow-up formula (1) and its require to realize), staggeredly convert in two of the main circuit 3 staggeredly conversion branch roads being connected in parallel two the
Four switching tube V7/V9, i.e. V7 and V9, two the 5th switching tube V8/V10, i.e. V8 and V10, the mode of operation of this four switching tubes
For：
Duty cycle of switching synchronously changes in four switching tube work, identical all the time, and dutycycle D requirements are consistently greater than
0.5, and less than 1；
Transformation relation of interlocking is switched referring to tetra- switching tubes of V7, V8, V9, V10 shown in accompanying drawing 2, the cycle is T, each to interlock
The false relation of the 4th switching tube V7/V9 and the 5th switching tube V8/V10 in branch road are converted, i.e. interlocking between V7 and V8, V9
Interlocking between V10, follow：4th switching tube V7/V9 first half cycles and the 5th switching tube V8/V10 later half cycles are on time
Between sequencing on off state it is identical, the 4th switching tube V7/V9 later half cycles and the 5th switching tube V8/V10 first half cycles are on time
Between sequencing on off state it is identical；
Difference staggeredly converts the false relation of two the 4th switching tubes in branch road, i.e. between V7 and V9：V7 first half cycles
After half cycle interlocks in chronological order before V9 later half cycles, and V7 later half cycles and V9, V7 and V9 respective front and rear half cycle
In phase, then 1/4 cycle before and after in the respective half period exchanged staggeredly in chronological order；Difference staggeredly converts two in branch road
5th switching tube V8 and V10 false relation is identical with false relation between V7 and V9；
By adjusting dutycycle D size, the staggeredly conversion output voltage size of main circuit 3 can be changed, according to the present embodiment
The circuit structure of accompanying drawing 1, providing the relation that staggeredly conversion main circuit 3 is exported between busbar voltage UCm and input terminal voltage UCs is：
UCm=NUCs/ (2-2D) (1)
In formula (1), N is the second winding b circles for the three-winding transformer T1/T2 tertiary windings c number of turn and its first winding a
The ratio between number, N ＞ 1；Because requiring D ＞ 0.5 again, so that staggeredly conversion main circuit 3 should be realized by DC/DC boostings；
Accompanying drawing 2 also give staggeredly conversion main circuit 3 in two staggeredly conversion branch road the respective i.e. iL1 of input electric current and
IL4 current waveform, represents the staggeredly conversion branch road input current where inductance L1 and L4, the two electric currents, according to this respectively
After the interleaved switching pattern work of inventive embodiments, its electric current synthesized is staggeredly to convert the input current of main circuit 3, is also to generate electricity
Main circuit 1 is that switch reluctance generator winding output current is, is pulsation of current rate reduce 50% with respect to iL1 and iL4；
Treat bus capacitor Cm both end voltages i.e. busbar voltage UCm reach the input terminal voltage required value of excitation main circuit 4 with
After upper, excitation main circuit 4 is started working, when the output voltage of excitation main circuit 4 is higher than battery X both end voltages, due to excitation
Diode Dq effect, excitation power supply 2 is stopped, i.e., encouraged by excitation main circuit 4 as each phase winding of switch reluctance generator
The power supply in magnetic stage, the size of excitation voltage is needed by its 6th switching tube according to the load of bus capacitor Cm output ends
V11 and the 7th switching tube V12 regulations are realized, are specifically divided into two kinds of mode of operations：
Pattern one, when excitation need not be strengthened during electric energy fan-out capability to improve switch reluctance generator, using this mould
Formula, the 7th switching tube V12 is held off, and adjusts the 6th switching tube V11 dutycycle, and dutycycle is less than 1 and more than 0
When, the output voltage values that can change excitation main circuit 4 are less than input voltage value, and change with change in duty cycle, are specially：The
During six switching tube V11 closure conductings, the input current of excitation main circuit 4 provides excitation, the 6th switch through V11-L7-D16 outputs
When pipe V11 disconnects, due to the energy storage of the 4th inductance L7 early stages, excitation is provided through D15-L7-D16 outputs；As the 6th switching tube V11
Duty cycle of switching be equal to 1 when, the output voltage values of excitation main circuit 4 and input voltage value are equal；
Pattern two, when needing the electric energy fan-out capability to improve switch reluctance generator by strengthening excitation, using this
Pattern, the 6th switching tube V11 remains closed conducting state, and the 7th switching tube V12 of regulation dutycycle is less than 1 and more than 0, can
The output voltage values for changing excitation main circuit are more than input voltage value, and change with change in duty cycle, are specially：Open when the 7th
When closing pipe V12 closure conductings, the electric current that excitation main circuit 4 is inputted is electric to the 4th through the 6th switching tube V11 and the 7th switching tube V12
Feel L7 chargings, while electric energy provides excitation to generating main circuit 1 in capacitor C, when the 7th switching tube V12 disconnects, the 4th electricity
Feel L7 energy storage and excitation main circuit 4 input current it is common provide excitation via V11-L7-D16 outputs, while to capacitor C
Charging；
Work as proceed-to-send, i.e., as above excitation main circuit 4 is provided after excitation as field power supply, during generating main circuit 1 works,
Detecting the excitation stage terminates the winding current entered before power generating stage when can not reach necessary requirement, and now only shut-off first is opened
Pipe V1/V4 is closed, if the first phase winding A/B, then the first phase winding A/B is via second switch pipe V2/V5 and the 3rd diode
D3/D6 afterflows, this is freewheeling period, and because now phase winding is acted on without any backward voltage, rapid increase is treated electric current by electric current
Rise to after desirable value, turn off second switch pipe V2/V5, if do not reached yet to electric current behind freewheeling period correspondence maximum rotor position
Second switch pipe V2/V5 is still turned off to desirable value, into power generating stage；If the second phase winding C/D is opened via the 3rd
Pipe V3/V6 and the 3rd diode D3/D6 afterflows are closed, electric current, which reaches desirable value or reached, turns off the 3rd switch after afterflow maximum position
Pipe V3/V6 enters power generating stage.
Claims (2)
- The switch reluctance generator interleaved converter 1. low pulse is encouraged oneself, by generating main circuit, excitation power supply, generating capacitor, friendship Mistake conversion main circuit, bus capacitor, excitation main circuit composition, it is characterized in that, the generating main circuit input two ends connection institute Excitation power supply output two ends are stated, generating main circuit output two ends are connected staggeredly to be converted described in the generating capacitor two ends and connection Main circuit inputs two ends, staggeredly converts main circuit output two ends and connects the bus capacitor two ends and connect the main electricity of the excitation Road inputs two ends, excitation main circuit output two ends connection excitation power input two ends；Switch reluctance generator is four phase windings；Generating main circuit is made up of the connection of two generating branch circuit parallel connections, connected in each generating branch road two it is non-conterminous around Group, specifically by first switch pipe, second switch pipe, the 3rd switching tube, the first diode, the second diode, the 3rd diode, One phase winding, the second phase winding composition, it is characterized in that, first phase winding and second phase winding generate electricity in switching magnetic-resistance It is non-conterminous on machine stator, it is separated by, the first switch tube anode inputs positive terminal, first switch tube cathode as generating main circuit Be connected with the 3rd diode cathode, first phase winding one end, second phase winding one end, the first phase winding other end with it is described Second switch tube anode, first diode anode connection, the first diode cathode are connected with second diode cathode And it is used as generating main circuit output cathode end, the second phase winding other end and the second diode anode, the 3rd switching tube sun Pole connect, second switch tube cathode, the 3rd diode anode, the 3rd switch tube cathode short circuit and as generating main circuit input and The common negative pole end of output；Excitation power supply is made up of battery and excitation diode, it is characterized in that, the battery positive voltage connects the pole of excitation two Tube anode, excitation diode cathode and battery terminal negative are positive and negative extreme respectively as the input of excitation power supply, while being also output It is positive and negative extreme；Generating capacitor positive and negative end connects generating main circuit output positive and negative end respectively, while also connection staggeredly becomes respectively Change owner circuit inputs positive and negative end；Staggeredly conversion main circuit staggeredly converts branch circuit parallel connection connection by two and constituted, the first inductance of each staggeredly conversion branch route, Second inductance, the 3rd inductance, the 4th switching tube, the 5th switching tube, three-winding transformer, the 4th diode, the 5th diode, Six diodes, the 7th diode composition, it is characterized in that, described first inductance one end is used as staggeredly conversion main circuit input positive pole End, the first inductance other end connects described second inductance one end, described 3rd inductance one end, the first of the three-winding transformer Winding one end and second winding one end, first winding one end of the three-winding transformer and second winding one end opposite polarity, the The two inductance other ends are connected with the first winding other end of the described 4th switch tube anode, three-winding transformer, and the 3rd inductance is another One end be connected with the second winding other end of the described 5th switch tube anode, three-winding transformer, and the 4th switchs tube cathode and the Five switch tube cathode short circuits simultaneously as staggeredly conversion main circuit input negative pole end, the first winding of three-winding transformer and second around The primary side as the three-winding transformer is organized, the secondary side of three-winding transformer is made up of its tertiary winding, three winding transformation Tertiary winding one end of device connects the 4th diode anode and the 5th diode cathode, the 3rd of three-winding transformer the The winding other end connects the 6th diode anode and the 7th diode cathode, the 4th diode cathode and the six or two pole Tube cathode short circuit is simultaneously defeated as staggeredly conversion main circuit output cathode end connection bus capacitor positive terminal and excitation main circuit Enter positive terminal, the 5th diode anode and the 7th diode anode short circuit and as staggeredly conversion main circuit output negative pole end connection Bus capacitor negative pole end and excitation main circuit input negative pole end；Excitation main circuit is by the 6th switching tube, the 7th switching tube, the 8th diode, the 9th diode, the 4th inductance, capacitor bank Into, it is characterized in that, the 6th switch tube anode inputs positive terminal as excitation main circuit, and the 6th switch tube cathode connection is described 8th diode cathode and described 4th inductance one end, the 4th inductance other end connection the 7th switch tube anode and described the Nine diode anodes, the 9th diode cathode connects the capacitor anode and is used as excitation main circuit output cathode end, the 8th Diode anode, the 7th switch tube cathode, capacitor anode short circuit are simultaneously used as the input of excitation main circuit and output negative pole end.
- The method of controlling switch of switch reluctance generator interleaved converter 2. low pulse is encouraged oneself, it is characterized in that,According to the operation principle of four phase switch reluctance generators, it is divided into the excitation stage in work per phase winding and power generating stage two is big In the stage, when a phase winding is in the excitation stage, its adjacent phase winding is in power generating stage, so connecting in each generating branch road Two phase windings connect are not adjacent, it is ensured that an only phase winding is in work in any instantaneous each generating branch road；When switch reluctance generator is moved, according to switch reluctance generator rotor position information, when the first of a generating branch road Phase winding need to be powered excitation when, closure first switch pipe and second switch pipe, if the second phase winding needs excitation then to close the One switching tube and the 3rd switching tube, battery is via excitation diode to needing the first phase winding or the second phase winding of excitation to power Excitation, this is the excitation stage；At the end for the treatment of the excitation stage according to rotor position information, the first switch pipe closed before this is disconnected With second switch pipe, or first switch pipe and the 3rd switching tube, before this if the first phase winding excitation, its magnetic energy stored warp Exported by the first diode and the 3rd diode, if the second phase winding excitation, its magnetic energy stored via the second diode and 3rd diode export, this is power generating stage, detect during this period in another generating branch road with being in generating rank When the first phase winding or the adjacent phase winding of the second phase winding of the preceding generating branch road of section need to enter the excitation stage, generate electricity branch herein Road repeats the switch controlled mode in excitation stage in foregoing generating branch road, and subsequent power generating stage is also identical；After the dynamic beginning of switch reluctance generator, generating capacitor voltage at both ends gradually rises, and reaches staggeredly conversion main circuit pair After the requirement of input terminal voltage, staggeredly convert main circuit and start working, two in two staggeredly conversion branch road being connected in parallel The 4th switching tube of 4th switching tube, i.e., first and second the 4th switching tube, two the 5th switching tubes, i.e., first the 5th open Pipe and second the 5th switching tube are closed, the mode of operation of this four switching tubes is：Duty cycle of switching synchronously changes in four switching tube work, identical all the time, and dutycycle is consistently greater than 0.5, and small In 1；The false relation of the 4th switching tube and the 5th switching tube in each staggeredly conversion branch road is：4th switching tube first half cycle In chronological sequence sequence switch state is identical with the 5th switching tube later half cycle, the 4th switching tube later half cycle and the 5th switching tube In chronological sequence sequence switch state is identical for first half cycle；The false relation of two fourth switching tubes of the difference staggeredly in conversion branch roads be：First the 4th switching tube first half cycle with Second the 4th switching tube later half cycle, and first the 4th switching tube later half cycle and half cycle before second the 4th switching tube After interlocking in chronological order, two the 4th switching tubes it is respective before and after in the half period, then by 1/4 before and after in the respective half period Cycle exchanges staggeredly in chronological order；Difference staggeredly conversion branch roads in two the 5th switching tubes false relation with two the 4th Switching tube false relation is identical；By adjusting the 4th switching tube and the 5th switching tube identical dutycycle size, change staggeredly conversion main circuit output voltage Size；After bus capacitor both end voltage be excitation master after busbar voltage reaches more than excitation main circuit input terminal voltage required value Circuit is started working, and when excitation main circuit output voltage is higher than battery both end voltage, excitation power supply is stopped, i.e., by encouraging Magnetic main circuit is as the power supply in switch reluctance generator each phase winding excitation stage, and the size of excitation voltage is according to bus capacitor The load of device output end needs, by realizing its 6th switching tube and the regulation of the 7th switching tube, to be specifically divided into two kinds of mode of operations：Pattern one, the 7th switching tube is held off, and adjusts the dutycycle of the 6th switching tube, and dutycycle is less than 1 and more than 0 When, the output voltage values that can change excitation main circuit are less than input voltage value, and change with change in duty cycle, and dutycycle is equal to Excitation main circuit output voltage values and input voltage value are equal when 1；Pattern two, the 6th switching tube remains closed conducting state, and the dutycycle of the 7th switching tube of regulation is less than 1 and more than 0, can The output voltage values for changing excitation main circuit are more than input voltage value, and change with change in duty cycle；Work as proceed-to-send, i.e. excitation main circuit to provide after excitation as field power supply, in the work of generating main circuit, detect excitation When the winding current that stage terminates into before power generating stage can not reach necessary requirement, first switch pipe is now only turned off, if It is the first phase winding, then the first phase winding is via second switch pipe and the 3rd diode continuousing flow, and this is freewheeling period, treats that electric current is fast Speed is risen to after desirable value, turns off second switch pipe, if be still not up to electric current behind freewheeling period correspondence maximum rotor position Desirable value still turns off second switch pipe, into power generating stage；If the second phase winding is then via the 3rd switching tube and the 3rd Diode continuousing flow, electric current, which reaches desirable value or reaches the 3rd switching tube of shut-off after afterflow maximum position, enters power generating stage.
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| CN108039844A (en) * | 2017-12-14 | 2018-05-15 | 中国计量大学 | A kind of switch reluctance generator power inverter and regulation and control method |
| CN109617476A (en) * | 2018-12-16 | 2019-04-12 | 中国计量大学 | Multifunction switch reluctance generator high-voltage direct current |
| CN113315427A (en) * | 2021-06-11 | 2021-08-27 | 山东理工大学 | Separately excited hollow pulse generator excitation circuit capable of recycling residual excitation energy |
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Application publication date: 20170808 Assignee: Xinchang China Metrology University Enterprise Innovation Research Institute Co.,Ltd. Assignor: China Jiliang University Contract record no.: X2021330000071 Denomination of invention: Interleaving converter of low pulsation Self Excitation Switched Reluctance generator and its switching control method Granted publication date: 20190507 License type: Common License Record date: 20210816 |
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Effective date of registration: 20231122 Address after: Room 407-10, floor 4, building 2, Haichuang science and technology center, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province, 311100 Patentee after: Zhejiang Zhiduo Network Technology Co.,Ltd. Address before: 310018, No. 258, source street, Xiasha Higher Education Park, Hangzhou, Zhejiang Patentee before: China Jiliang University |