CN107026589B - 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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- CN107026589B CN107026589B CN201710273137.8A CN201710273137A CN107026589B CN 107026589 B CN107026589 B CN 107026589B CN 201710273137 A CN201710273137 A CN 201710273137A CN 107026589 B CN107026589 B CN 107026589B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 162
- 230000005284 excitation Effects 0.000 claims abstract description 138
- 238000010248 power generation Methods 0.000 claims abstract description 78
- 230000009466 transformation Effects 0.000 claims abstract description 42
- 230000005611 electricity Effects 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 39
- 230000010349 pulsation Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Low pulse self-excitation switch reluctance generator interleaved converter and its method of controlling switch, converter is by power generation main circuit, excitation power supply, staggeredly convert main circuit, the composition such as excitation main circuit, generate electricity main circuit in generator windings excitation when, by excitation power supply power supply during starting, by adjustable excited voltage from itself issuing electric energy excitation main circuit as input for electrical excitation after starting, staggeredly transformation main circuit staggeredly acting by switching tube, realize the function of reducing to generation current pulsation rate, it is exported after raising simultaneously generating voltage, total system structure is simple, performance is good, suitable for all kinds of switch reluctance generator applications.
Description
Technical field
The present invention relates to switched reluctance machines fields, 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 technique
Switched reluctance machines are that a kind of structure is simple, firm, fault-tolerance is strong, the motor kind of low cost；Switching magnetic-resistance hair
Motor is a kind of emerging generator in the application of the fields such as wind-power electricity generation, diesel engine unit power generation, automobile current generator；
The changer system of switch reluctance generator is the core component in its work；
Conventional switch reluctance generator power inverter i.e. power generation main circuit structure is asymmetrical half-bridge formula structure, the knot
Switching device needed for structure is more, if developing the power generation main circuit of less switching device, simplifying structure reduces cost, and in performance
It does not lack, then it must be significant；
The torque pulsation problem of switched reluctance machines be always perplex switched reluctance machines application field bottleneck problem it
One, one of root of torque pulsation is excessive from the pulsation of winding current, 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 small as far as possible, also for example automotive field, it is desirable to which it generates electricity
Machine system bulk weight is also had to small, is to need higher power density in a word, this must be very significant thing；
After the power output of switch reluctance generator, in many fields, need to connect increasing apparatus to improve direct sending
Voltage value, then again row connect application system, if the increasing apparatus can be with the output end converter system of switch reluctance generator
Integration is at double gain then simplifies structure, reduces costs, is also bound to significant；
In the excitation mode of switch reluctance generator, traditional self-excitation type and separated exciting are all determined in the presence of respectively apparent,
Self-excitation type current fluctuation is big, and separated exciting need to frequently replace separate excitation battery, if can overcome respective disadvantage as above, and utilizes them
The advantages of, while extending excitation voltage is a variable, then certainly will improve performance, and increase controllability, flexibility.
Summary of the invention
According to above background technique, the present invention just propose a kind of structure is simple, multipurpose staggeredly convert rise a pressure drop fluctuation,
The switch reluctance generator converter and its control method flexibly encouraged oneself.
The technical solution of the present invention is as follows:
Low pulse encourage oneself switch reluctance generator interleaved converter, by power generation main circuit, excitation power supply, power generation capacitor,
Staggeredly convert main circuit, bus capacitor, excitation main circuit composition, characterized in that power generation main circuit input both ends connection
The excitation power supply exports both ends, and power generation main circuit exports both ends and connects the power generation capacitor both ends and connect the staggeredly change
Change owner circuit inputs both ends, staggeredly converts main circuit output both ends and connects the bus capacitor both ends and connect the excitation master
Circuit inputs both ends, and excitation main circuit exports both ends and connects excitation power input both ends；
Switch reluctance generator is four phase windings；
Power generation main circuit is made of two power generation branch circuit parallel connection connections, and two non-conterminous phases are connected in each power generation branch
Winding, specifically by first switch tube, second switch, third switching tube, first diode, the second diode, third diode,
First phase winding, the second phase winding composition, 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, first switch tube yin as power generation main circuit
Pole is connect with the third 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, first diode cathode and second diode cathode connect
It connects and as power generation main circuit output cathode end, the second phase winding other end and the second diode anode, the third switching tube
Anode connection, second switch tube cathode, third diode anode, third switch tube cathode are shorted and as power generation main circuit inputs
The common negative pole end with output；
Excitation power supply is made of battery and excitation diode, 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
It exports positive and negative extreme；
Power generation capacitor positive and negative end is separately connected power generation main circuit output positive and negative end, while being also separately connected friendship
Mistake transformation main circuit inputs positive and negative end；
Staggeredly transformation main circuit staggeredly converts branch circuit parallel connection connection by two and forms, and each staggeredly transformation branch routes the first electricity
Sense, the second inductance, third 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, characterized in that first inductance one end is as staggeredly transformation main circuit input
Positive terminal, the first inductance other end connect second inductance one end, third 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 connect with the first winding other end of the 4th switch tube anode, three-winding transformer, third electricity
The sense other end is connect with the second winding other end of the 5th switch tube anode, three-winding transformer, the 4th switch tube cathode
It is shorted with the 5th switch tube cathode and inputs negative pole end, the first winding of three-winding transformer and the as staggeredly transformation main circuit
The secondary side of primary side of two windings as the three-winding transformer, three-winding transformer is made 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 is shorted and as staggeredly transformation main circuit output cathode end connection bus capacitor positive terminal and the main electricity of excitation
Road inputs positive terminal, and the 5th diode anode and the 7th diode anode are shorted and as staggeredly transformation main circuit output negative pole ends
It connects bus capacitor negative pole end and excitation main circuit inputs 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
Device composition, 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
State the 9th diode anode, 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 are shorted and output and input negative pole end as excitation main circuit.
The method of controlling switch of low pulse self-excitation switch reluctance generator interleaved converter, characterized in that
According to the working principle of four phase switch reluctance generators, it is divided into excitation stage and power generating stage in every phase winding work
In two big stages, when a phase winding is in the excitation stage, an adjacent phase winding is in power generating stage, so each power generation branch
Two phase windings of middle connection are not adjacent, it is ensured that an only phase winding is in work in any instantaneous each power generation branch；
When switch reluctance generator moves, according to switch reluctance generator rotor position information, when power generation branch
First phase winding need to be powered excitation when, be closed first switch tube and second switch, need excitation then to close if it is the second phase winding
Close first switch tube and third switching tube, battery is via excitation diode to the first phase winding or the second phase winding for needing excitation
For electrical excitation, this is the excitation stage；At the end of waiting for the excitation stage according to rotor position information, disconnects first be closed before this and open
Pipe and second switch or first switch tube and third switching tube are closed, before this if the first phase winding excitation, the magnetic of storage
It can be exported via first diode and third diode, if the second phase winding excitation, the magnetic energy of storage is via the two or two pole
Pipe and third diode output, this is power generating stage, detect during this period positioned at another power generation branch in be in hair
When the adjacent phase winding of the first phase winding or the second phase winding of the preceding power generation branch in electric stage need to enter the excitation stage, send out herein
Electric branch repeats the switch controlled mode in excitation stage in aforementioned power generation branch, and subsequent power generating stage is also identical；
After the dynamic beginning of switch reluctance generator, power generation capacitor voltage at both ends is gradually risen, and is reached and is staggeredly converted main electricity
It after road is to the requirement of input terminal voltage, staggeredly converts main circuit and starts to work, in two staggeredly transformation branch 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 operating mode of this four switching tubes are as follows:
The synchronous variation of duty cycle of switching in four switching tube work, it is identical always, and duty ratio 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 transformation branch are as follows: the 4th switching tube first half
Period, in chronological sequence sequence switch state was identical with the 5th switching tube later half period, and the 4th switching tube later half period opened with the 5th
Closing pipe first half cycle, in chronological sequence sequence switch state is identical；
Difference staggeredly converts the false relation of two the 4th switching tubes in branch are as follows: half cycle before first the 4th switching tube
Before phase and second the 4th switching tube later half period and first the 4th switching tube later half period and second the 4th switching tube
Half cycle in chronological order interlock after, in the respective front and back half period of two the 4th switching tubes, then by the respective half period front and back
1/4 period interlock in chronological order；Difference staggeredly converts the false relation and two of two the 5th switching tubes in branch
A 4th switching tube false relation is identical；
By adjusting the 4th switching tube and the identical duty ratio size of the 5th switching tube, change staggeredly transformation main circuit output
Voltage swing；
After bus capacitor both end voltage, that is, busbar voltage reaches excitation main circuit input terminal voltage required value or more, encourage
Magnetic main circuit is started to work, and when excitation main circuit output voltage is higher than battery both end voltage, excitation power supply stops working, i.e.,
Power supply by 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 to be specifically divided into two kinds of Working moulds by adjusting realization to its 6th switching tube and the 7th switching tube
Formula:
Mode one, the 7th switching tube are held off, adjust the 6th switching tube duty ratio, duty ratio less than 1 and
When greater than 0, the output voltage values that excitation main circuit can be changed 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 when than being equal to 1；
Mode two, the 6th switching tube remain closed on state, and the duty ratio for adjusting the 7th switching tube less than 1 and is greater than
0, the output voltage values that excitation main circuit can be changed are greater than input voltage value, and change with change in duty cycle；
Work as proceed-to-send, i.e., after excitation main circuit provides excitation as field power supply, in power generation main circuit work, detects
When the winding current that the excitation stage terminates into before power generating stage cannot reach necessary requirement, first switch tube is only turned off at this time,
If it is the first phase winding, then the first phase winding is via second switch and third diode continuousing flow, this is freewheeling period, to electricity
After stream is climbed to desirable value, second switch is turned off, if electric current is not yet after corresponding to maximum rotor position to freewheeling period
Reach desirable value and still turn off second switch, into power generating stage；If it is the second phase winding be then via third switching tube and
Third diode continuousing flow, shutdown third switching tube enters power generating stage after electric current reaches desirable value or reaches afterflow maximum position.
Technical effect of the invention mainly has:
Under power generation main circuit structure of the invention, (1) relatively traditional asymmetrical half-bridge formula structure reduces 2 switching tubes
With 2 diode dosages, cost is saved；(2) structure is simple 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, power generation main circuit of the invention are directed to
Structure, in a phase winding excitation, the power generation of an adjacent phase winding, the two is not interfere with each other.
Under staggeredly transformation main circuit structure of the invention and its method of controlling switch, (1) makes the main circuit output electricity that generates electricity
Stream pulsation rate reduces 50%, and especially for large and medium-sized switch reluctance generator, the reduction of winding current pulsation rate is reduced
The pressure of switch reluctance generator power train under same machine set system, is suitable for bigger specified mechanical load-bearing capability, improves
Generating capacity；(2) reduction of pulsation of current rate certainly will also raise rated current, improve system effectiveness；(3) staggeredly become
Change owner circuit output voltage is higher than input voltage, while playing the role of the DC/DC converter that boosts, and it is special to eliminate certain fields
The DC/DC converter of door；(4) main circuit adjustable output voltage values size in a certain range is staggeredly converted, this is improved
The adaptive surface of invention；(5) connection type for staggeredly converting two transformation branch circuit parallel connections that interlock of main circuit, is suitable for relatively low pressure
The load scenarios of high current.
Lifting busbar voltage can be achieved as excitation voltage in excitation main circuit of the invention, (1), and range is wide, adaptation is wide；
It (2) include isolation link in main circuit due to staggeredly converting, excitation main circuit of the invention may not need isolation link, simplify
Structure.
Detailed description of the invention
Fig. 1 show low pulse self-excitation switch reluctance generator interleaved converter circuit structure diagram of the invention.
The staggeredly transformation main circuit switch that Fig. 2 is shown in the present invention interlocks and input current waveform figure.
In Fig. 1: 1, generate electricity main circuit, 2, excitation power supply, 3, staggeredly transformation main circuit, 4, excitation main circuit.
Specific embodiment
Low pulse self-excitation switch reluctance generator interleaved converter, by power generation main circuit 1, excitation power supply 2, power generation capacitor
Cs, staggeredly transformation main circuit 3, bus capacitor Cm, excitation main circuit 4 form, and power generation main circuit 1 inputs both ends connection excitation electricity
Source 2 exports both ends, and power generation main circuit 1 exports the both ends connection power generation both ends capacitor Cs and connects staggeredly transformation main circuit 3 and inputs
Both ends staggeredly convert main circuit 3 and export the both ends connection both ends bus capacitor Cm and connect the input of excitation main circuit 4 both ends, encourage
Magnetic main circuit 4 exports both ends connection excitation power supply 2 and inputs both ends, as shown in Fig. 1；
Switch reluctance generator is four phase windings；
Power generation main circuit 1 is made of two power generation branch circuit parallel connection connections, and connection two is non-conterminous in each power generation branch
Phase winding, specifically by first switch tube V1/V4, second switch V2/V5, third switching tube V3/V6, first diode D1/D4,
Second diode D2/D5, third diode D3/D6, the first phase winding A/B, the second phase are formed around C/D, in a power generation branch
The the first phase winding A and the second phase winding C that are separated by are connected, the first phase winding B being separated by and the is connected in another power generation branch
Four phase windings of two-phase winding D, switch reluctance generator are distributed on stator by the sequence of A-B-C-D-A, and power generation branch is specific
Connection relationship is, first switch tube V1/V4 anode inputs positive terminal as power generation main circuit 1, first switch tube V1/V4 cathode with
Third diode D3/D6 cathode, first one end phase winding A/B, the connection of second one end phase winding C/D, the first phase winding A/B are another
End is connect with second switch V2/V5 anode, first diode D1/D4 anode, first diode D1/D4 cathode and the two or two pole
Pipe D2/D5 cathode connects and as power generation 1 output cathode end of main circuit, the second phase winding C/D other end and the second diode D2/
D5 anode, the connection of third switching tube V3/V6 anode, second switch V2/V5 cathode, third diode D3/D6 anode, third are opened
Pipe V3/V6 cathode is closed to be shorted and output and input common negative pole end as power generation main circuit 1；It is corresponding in two power generation branches
The specifications and models of whole elements are identical；
Excitation power supply 2 is made of battery X and excitation diode Dq, and battery X anode connects excitation diode Dq anode,
Excitation diode Dq cathode and battery X cathode are positive and negative extreme respectively as the input of excitation power supply 2, while being also that output is positive and negative
Extremely；
Power generation capacitor Cs positive and negative end is separately connected power generation main circuit 1 and exports positive and negative end, while also connecting respectively
It connects staggeredly transformation main circuit 3 and inputs positive and negative end；
Staggeredly transformation main circuit 3 staggeredly converts branch circuit parallel connection connection by two and forms, and each staggeredly transformation branch routes first
Inductance L1/L4, the second inductance L2/L5, third 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 composition, first one end inductance L1/L4 input positive terminal as staggeredly transformation main circuit 3, and the first inductance L1/L4 other end connects
Connect second one end inductance L2/L5, the one end third inductance L3/L6, three-winding transformer T1/T2 first one end winding a and second
The one end winding b, first one end winding a of three-winding transformer T1/T2 and second winding b one end polarity are on the contrary, the second inductance
The L2/L5 other end is connect with the first winding a other end of the 4th switching tube V7/V9 anode, three-winding transformer T1/T2, third
The inductance L3/L6 other end is connect with the second winding b other end of the 5th switching tube V8/V10 anode, three-winding transformer T1/T2,
4th switching tube V7/V9 cathode and the 5th switching tube V8/V10 cathode are shorted and input negative pole end as staggeredly transformation main circuit 3,
Primary side of the first winding a and the second winding b of three-winding transformer T1/T2 as three-winding transformer T1/T2, three winding
The secondary side of transformer T1/T2 is made of its tertiary winding c, the one end tertiary winding c connection the 4th of three-winding transformer T1/T2
Diode D7/D11 anode and the 5th diode D8/D12 cathode, the tertiary winding c other end connection of three-winding transformer T1/T2
6th diode D9/D13 anode and the 7th diode D10/D14 cathode, the 4th diode D7/D11 cathode and the 6th diode
D9/D13 cathode is shorted and as staggeredly transformation 3 output cathode end of main circuit connection bus capacitor Cm positive terminal and excitation master
Circuit 4 inputs positive terminal, and the 5th diode D8/D12 anode and the 7th diode D10/D14 anode are shorted and as staggeredly transformation
3 output negative pole end of main circuit connects bus capacitor Cm negative pole end and excitation main circuit 4 inputs negative pole end；Two staggeredly convert
Corresponding whole component specification model is identical in branch；The the first winding a and the second winding b of three-winding transformer T1/T2
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 composition, the 6th switching tube V11 anode input positive terminal, the 6th switching tube as excitation main circuit 4
V11 cathode connects the 8th diode D15 cathode and the 4th one end inductance L7, and the 4th inductance L7 other end connects the 7th switching tube
V12 anode and the 9th diode D16 anode, the 9th diode D16 cathode connect capacitor C anode and as excitation main circuits 4
Output cathode end, the 8th diode D15 anode, the 7th switching tube V12 cathode, capacitor C cathode are shorted and as the main electricity of excitation
Road 4 outputs and inputs 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 working principle of phase switch reluctance generator is divided into excitation stage and the big stage of power generating stage two in the work of every phase winding, when one
When phase winding is in the excitation stage, an adjacent phase winding is in power generating stage, so the two-phase connected in each power generation branch
Winding is not adjacent, it is ensured that an only phase winding is in work in any instantaneous each power generation branch, otherwise of the invention
The power generation power generation branch of main circuit 1 one will be unable to meet the requirements, and in fact according to having four phase switch reluctance generators, be overlapped system
Number in the design, will meet a phase winding excitation substantially, the requirement of adjacent phase winding power generation, the present invention be based on this common four
Phase switch reluctance generator；
When switch reluctance generator moves, according to switch reluctance generator rotor position information, when power generation branch
First phase winding A or B need to be powered excitation when, it is assumed that be the first phase winding A, then be closed first switch tube V1 and second switch
V2 needs excitation to be then closed first switch tube V1 and third switching tube V3, battery if it is the second phase winding C of the power generation branch
X via excitation diode Dq to need the first phase winding A or the second phase winding C of excitation for electrical excitation, exciting current path are as follows: X-
Dq-V1-A-V2-X or X-Dq-V1-C-V3-X, this is the excitation stage；
At the end of waiting for the above excitation stage according to rotor position information, the first switch tube V1 and second being closed before this is disconnected
Switching tube V2 or first switch tube V1 and third switching tube V3, before this if the first phase winding A excitation, the magnetic energy of storage
It is exported via first diode D1 and third diode D3, path are as follows: A-D1-Cs-D3-A, if the second phase winding C excitation,
The magnetic energy of storage is exported via the second diode D2 and third diode D3, path are as follows: C-D2-Cs-D3-C, this is power generation rank
Section detects the first phase winding with the preceding power generation branch for being in power generating stage in another power generation branch during this period
When A or the second phase winding C adjacent phase winding B or D need to enter the excitation stage, the branch that generates electricity herein is repeated in aforementioned power generation branch
The switch controlled mode in excitation stage, subsequent power generating stage are also identical；
After the dynamic beginning of switch reluctance generator, power generation capacitor Cs both end voltage is gradually risen, and reaches staggeredly transformation master
After circuit 3 is to the requirement of input terminal voltage, staggeredly converts main circuit 3 and start to work, the battery X voltage rating of the present embodiment
UXN be less than rated generation voltage i.e. generate electricity capacitor Cs both end voltage UCsN, UCsN be less than again specified busbar voltage UCmN (according to
Subsequent formula (1) and its require to realize), staggeredly convert in the staggeredly transformation branches that two of main circuit 3 are 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 operating mode of this four switching tubes
Are as follows:
The synchronous variation of duty cycle of switching in four switching tube work, it is identical always, and duty ratio D requires to be consistently greater than
0.5, and less than 1；
Referring to tetra- switching tube switches of V7, V8, V9, V10 shown in attached drawing 2, staggeredly transformation relation, period T are each to interlock
The false relation for converting the 4th switching tube V7/V9 and the 5th switching tube V8/V10 in branch, i.e. interlocking between V7 and V8, V9
Interlocking between V10, follow: the 4th switching tube V7/V9 first half cycle and the 5th switching tube V8/V10 later half period are on time
Between sequencing switch state it is identical, the 4th switching tube V7/V9 later half period and the 5th switching tube V8/V10 first half cycle are on time
Between sequencing switch state it is identical；
Difference staggeredly converts the false relation of two the 4th switching tubes in branch, i.e. between V7 and V9: V7 first half cycle
After half cycle interlocks in chronological order before V9 later half period and V7 later half period and V9, the respective front and back half cycle of V7 and V9
In phase, then by the respective half period front and back 1/4 period interlock in chronological order；Difference staggeredly converts two in branch
The false relation of 5th switching tube V8 and V10 is identical as false relation between V7 and V9；
By adjusting the size of duty ratio D, staggeredly transformation 3 output voltage size of main circuit can be changed, according to the present embodiment
1 circuit structure of attached drawing provides the relationship between staggeredly transformation main circuit 3 output busbar voltage UCm and input terminal voltage UCs are as follows:
UCm=NUCs/ (2-2D) (1)
In formula (1), the number of turns and its first winding a i.e. the second winding b circle that N is three-winding transformer T1/T2 tertiary winding c
The ratio between number, N > 1；Because requiring D > 0.5 again, so that staggeredly transformation main circuit 3 should be realized by DC/DC boosting；
Attached drawing 2 also give staggeredly convert main circuit 3 in two staggeredly transformation branch the respective i.e. iL1 of input terminal electric current and
The current waveform of iL4 respectively represents the staggeredly transformation branch input current where inductance L1 and L4, the two electric currents, according to this
After the interleaved switching mode work of inventive embodiments, the electric current of synthesis i.e. staggeredly transformation 3 input current of main circuit, and power generation
Main circuit 1 is that the pulsation of current rate of switch reluctance generator winding output current is, is reduce 50% with respect to iL1 and iL4；
To bus capacitor Cm both end voltage, that is, busbar voltage UCm reach 4 input terminal voltage required value of excitation main circuit with
After upper, excitation main circuit 4 is started to work, when 4 output voltage of excitation main circuit is higher than battery X both end voltage, due to excitation
The effect of diode Dq, excitation power supply 2 stop working, i.e., are encouraged by excitation main circuit 4 as each phase winding of switch reluctance generator
The size of the power supply in magnetic stage, excitation voltage is needed according to the load of bus capacitor Cm output end by its 6th switching tube
V11 and the 7th switching tube V12, which is adjusted, to be realized, two kinds of operating modes are specifically divided into:
Mode one, when not needing power output ability of the enhancing excitation to improve switch reluctance generator, using this mould
Formula, the 7th switching tube V12 are held off, and adjust the duty ratio of the 6th switching tube V11, duty ratio is less than 1 and is greater than 0
When, the output voltage values that excitation main circuit 4 can be changed are less than input voltage value, and change with change in duty cycle, specifically: the
When six switching tube V11 closure conducting, the input current of excitation main circuit 4 is exported through V11-L7-D16 provides excitation, the 6th switch
When pipe V11 is disconnected, due to the energy storage of the 4th inductance L7 early period, is exported through D15-L7-D16 and excitation is provided；As the 6th switching tube V11
Duty cycle of switching be equal to 1 when, 4 output voltage values of excitation main circuit and input voltage value are equal；
Mode two, when needing the power output ability by enhancing excitation to improve switch reluctance generator, using this
Mode, the 6th switching tube V11 remain closed on state, and the duty ratio of the 7th switching tube V12 of adjusting, can less than 1 and greater than 0
The output voltage values for changing excitation main circuit are greater than input voltage value, and change with change in duty cycle, specifically: it opens when the 7th
When closing pipe V12 closure conducting, the electric current that excitation main circuit 4 inputs is electric to the 4th through the 6th switching tube V11 and the 7th switching tube V12
Sense L7 charging, while electric energy is to the power generation offer excitation of main circuit 1 in capacitor C, when the 7th switching tube V12 is disconnected, the 4th is electric
The input current of the energy storage and excitation main circuit 4 of feeling L7 exports via V11-L7-D16 jointly and provides excitation, while to capacitor C
Charging；
Work as proceed-to-send, i.e., after excitation main circuit 4 as above provides excitation as field power supply, in the power generation work of main circuit 1,
The winding current before the excitation stage terminates to enter power generating stage is detected when cannot reach necessary requirement, only shutdown first is opened at this time
Pipe V1/V4 is closed, if it is the first phase winding A/B, then the first phase winding A/B is via second switch V2/V5 and third diode
D3/D6 afterflow, this is freewheeling period, and since phase winding at this time is acted on without any backward voltage, electric current is by rapid increase, to electric current
After rising to desirable value, second switch V2/V5 is turned off, if electric current does not reach yet after corresponding to maximum rotor position to freewheeling period
Second switch V2/V5 is still turned off to desirable value, into power generating stage；It if it is the second phase winding C/D is opened via third
Pipe V3/V6 and third diode D3/D6 afterflow are closed, electric current reaches desirable value or reaches shutdown third 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 power generation main circuit, excitation power supply, power generation capacitor, is handed over Mistake transformation main circuit, bus capacitor, excitation main circuit composition, characterized in that power generation main circuit input both ends connect institute Excitation power supply output both ends are stated, power generation main circuit exports both ends and connects the power generation capacitor both ends and connect the staggeredly transformation Main circuit inputs both ends, staggeredly converts main circuit output both ends and connects the bus capacitor both ends and connect the main electricity of the excitation Road inputs both ends, and excitation main circuit exports both ends and connects excitation power input both ends；Switch reluctance generator is four phase windings；Power generation main circuit is made of the connection of two power generation branch circuit parallel connections, in each power generation branch two non-conterminous phases of connection around Group, specifically by first switch tube, second switch, third switching tube, first diode, the second diode, third diode, One phase winding, the second phase winding composition, 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 power generation main circuit Connect with the third 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, first diode cathode are connect with second diode cathode And as power generation main circuit output cathode end, the second phase winding other end and the second diode anode, third switching tube sun Pole connection, second switch tube cathode, third diode anode, third switch tube cathode be shorted and as power generation main circuit input and Export common negative pole end；Excitation power supply is made of battery and excitation diode, characterized in that the battery positive voltage connects two pole of excitation 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；Power generation capacitor positive and negative end is separately connected power generation main circuit output positive and negative end, while being also separately connected and staggeredly becoming Change owner circuit inputs positive and negative end；Staggeredly transformation main circuit staggeredly converts branch circuit parallel connection connection by two and forms, the first inductance of each staggeredly transformation branch routing, Second inductance, third inductance, the 4th switching tube, the 5th switching tube, three-winding transformer, the 4th diode, the 5th diode, Six diodes, the 7th diode composition, characterized in that first inductance one end is as staggeredly transformation main circuit input anode End, the first inductance other end connect second inductance one end, third inductance one end, the three-winding transformer first Winding one end and second winding one end, first winding one end and the second winding one end polarity of the three-winding transformer are on the contrary, The two inductance other ends are connect with the first winding other end of the 4th switch tube anode, three-winding transformer, and third inductance is another One end connect with the second winding other end of the 5th switch tube anode, three-winding transformer, and the 4th switchs tube cathode and the Five switch tube cathodes be shorted simultaneously as staggeredly transformation main circuit input negative pole end, the first winding of three-winding transformer and second around Primary side of the group as the three-winding transformer, the secondary side of three-winding transformer are made of its tertiary winding, three winding transformation Tertiary winding one end of device connects the 4th diode anode and the 5th diode cathode, the third of three-winding transformer 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 is shorted and as staggeredly transformation main circuit output cathode end connects bus capacitor positive terminal and excitation main circuit is defeated Enter positive terminal, the 5th diode anode and the 7th diode anode are shorted and as staggeredly transformation main circuit output negative pole end connections 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 group At, characterized in that the 6th switch tube anode inputs positive terminal as excitation main circuit, and the 6th switchs described in tube cathode connection 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 connect capacitor anode and as excitation main circuit output cathode end, the eight or two poles Tube anode, the 7th switch tube cathode, capacitor anode are shorted and output and input negative pole end as excitation main circuit.
- 2. the method for controlling switch of low pulse self-excitation switch reluctance generator interleaved converter according to claim 1, It is characterized in,According to the working principle of four phase switch reluctance generators, it is divided into the excitation stage in every phase winding work and power generating stage two is big In the stage, when a phase winding is in the excitation stage, an adjacent phase winding is in power generating stage, so connecting in each power generation branch Two phase windings connect are not adjacent, it is ensured that an only phase winding is in work in any instantaneous each power generation branch；When switch reluctance generator moves, according to switch reluctance generator rotor position information, when the first of a power generation branch Phase winding need to be powered excitation when, be closed first switch tube and second switch, need excitation to be then closed the if it is the second phase winding One switching tube and third switching tube, battery are powered via excitation diode to the first phase winding for needing excitation or the second phase winding Excitation, this is the excitation stage；At the end of waiting for the excitation stage according to rotor position information, the first switch tube being closed before this is disconnected And second switch or first switch tube and third switching tube, before this if the first phase winding excitation, the magnetic energy warp of storage Exported by first diode and third diode, if the second phase winding excitation, the magnetic energy of storage via the second diode and The output of third diode, this is power generating stage, detects certain adjacent phase winding in another power generation branch during this period When need to enter the excitation stage, correspondence switch controlled mode is identical, and subsequent power generating stage is also identical.
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| CN107947660B (en) * | 2017-12-14 | 2019-09-10 | 中国计量大学 | It improves oneself and encourages bidirectional high-pressure gain interleaved switching resistance motor power converter system |
| CN108039844B (en) * | 2017-12-14 | 2019-09-06 | 中国计量大学 | A kind of switch reluctance generator power inverter and regulation method |
| CN109617476B (en) * | 2018-12-16 | 2022-02-11 | 中国计量大学 | High-voltage direct-current system of multifunctional switched reluctance generator |
| CN113315427B (en) * | 2021-06-11 | 2022-10-18 | 山东理工大学 | Separately excited hollow pulse generator excitation circuit capable of recycling residual excitation energy |
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| EP0564067A2 (en) * | 1992-03-30 | 1993-10-06 | General Electric Company | Switched reluctance generator system with fault recovery capability |
| CN101582671A (en) * | 2009-06-23 | 2009-11-18 | 南京航空航天大学 | Power converter for switch reluctance starter/generator |
| CN204361950U (en) * | 2014-12-30 | 2015-05-27 | 中国计量学院 | The simple and easy power converter topologies of partly encouraging oneself of switching magnetic-resistance wind-driven generator |
| CN204408232U (en) * | 2014-12-30 | 2015-06-17 | 中国计量学院 | Small-power four phase switch reluctance generator power converter |
| CN205883097U (en) * | 2016-06-24 | 2017-01-11 | 姜坚波 | Encourage switched reluctance generator transformer soon and press power converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7638985B2 (en) * | 2006-08-17 | 2009-12-29 | Hamilton Sundstrand Corporation | Self-excitation of switched reluctance generators during load bus faults |
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| EP0564067A2 (en) * | 1992-03-30 | 1993-10-06 | General Electric Company | Switched reluctance generator system with fault recovery capability |
| CN101582671A (en) * | 2009-06-23 | 2009-11-18 | 南京航空航天大学 | Power converter for switch reluctance starter/generator |
| CN204361950U (en) * | 2014-12-30 | 2015-05-27 | 中国计量学院 | The simple and easy power converter topologies of partly encouraging oneself of switching magnetic-resistance wind-driven generator |
| CN204408232U (en) * | 2014-12-30 | 2015-06-17 | 中国计量学院 | Small-power four phase switch reluctance generator power converter |
| CN205883097U (en) * | 2016-06-24 | 2017-01-11 | 姜坚波 | Encourage switched reluctance generator transformer soon and press power converter |
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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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