CN108448968B - A kind of half self-excitation switched reluctance machines simple multifunctional current transformer of small-power - Google Patents
A kind of half self-excitation switched reluctance machines simple multifunctional current transformer of small-power Download PDFInfo
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- CN108448968B CN108448968B CN201810242704.8A CN201810242704A CN108448968B CN 108448968 B CN108448968 B CN 108448968B CN 201810242704 A CN201810242704 A CN 201810242704A CN 108448968 B CN108448968 B CN 108448968B
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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
- H02P9/008—Arrangements for controlling electric generators for the purpose of obtaining a desired output wherein the generator is controlled by the requirements of the prime mover
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/38—Self-excitation by current derived from rectification of both output voltage and output current of generator
-
- 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
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
Abstract
A kind of half self-excitation switched reluctance machines simple multifunctional current transformer of small-power, it is made of the phase winding unsteady flow main circuit of a capacitor, a battery, corresponding phase winding quantity, it is in parallel between each phase winding unsteady flow main circuit, it is also in parallel with each phase winding unsteady flow main circuit after capacitor and battery series connection, it is acted on by switching tube, it may participate in excitation in excitation stage generating voltage, that is, capacitor end electric energy, so that excitation voltage is flexibly controllable, becomes generating voltage and take same measure；Except flexibly controllable as generator, using the same control model when as motor, so not only structure is simple but also control is easy for entire invention, and realize the multiple functions that conventional asymmetrical half-bridge type current transformer cannot achieve, it is adapted in all kinds of low power switch reluctance generators/electronic machine integrated converter system.
Description
Technical field
The present invention relates to switched reluctance machines fields, and in particular to a kind of simple but more function of low power half self-excitation structure
The switched reluctance machines current transformer and its control method of energy.
Background technique
Switched reluctance machines structure simple rigid, manufacturing cost is cheap, without winding, without permanent magnet on rotor, high reliablity,
Wherein a phase winding, which does not work not, influences the normal work of other phase windings, and fault-tolerance is strong, has broad application prospects.
Switched reluctance machines as wind-driven generator in application, relatively double-fed asynchronous or permanent magnet synchronous wind generator, again
Has the advantages that high reliablity low in cost；When being run as all trades and professions motor or common generator, excellent ontology
Structure and operation characteristic also have comparable advantage.
Switched reluctance machines are generally placed on stator by multiple phase windings, according to the opposite of salient pole between rotor and groove
Position determines the phase winding being specifically powered, each phase winding time-sharing work；When as generator work, every phase winding is general when working
It is divided into excitation and two big stages of power generation, the excitation stage is the electric energy storage magnetic energy that motor phase windings absorb external field power supply, after
Continuous to terminate the excitation stage according to rotor relative stator position and enter power generating stage, it is defeated that the magnetic energy stored in phase winding is converted into electric energy
Out, intermediate when necessary to be re-introduced into freewheeling period, to obtain the winding current of meet demand.
The excitation of switch reluctance generator, afterflow, power generation will be controlled around the operation for the convertor circuit for connecting its winding
Realize there is no winding convertor circuit, switch reluctance generator is naturally without in all senses.
When switch reluctance generator is run, existing converter system, in the excitation stage, field power supply realizes self-excitation mould mostly
Formula, in this way without the manual working for frequently replacing battery or charging under separate excitation mode, especially in wind-powered electricity generation field, however it is many new
Type self-excitation power supply architecture and control are all complex, it is also necessary to be equipped with special controller；Although traditional separate excitation mode disadvantage is bright
It is aobvious, for example manual maintenance, charge or change battery heavy workload, but if this disadvantage can be overcome, or extend the frequency manually participated in,
The advantages of separate excitation mode excitation powered stable can be played again, so that the reduction to torque pulsation is also helpful, one kind of also can yet be regarded as
Good model.
The unsteady flow main circuit of current switch reluctance motor, it is most typical for asymmetrical half-bridge structure, advantage clearly,
It is in the industry cycle widely applied, but the unsteady flow main circuit of the structure, no matter is used as generator or motor running, controllability
Difference, flexibility is insufficient, if to obtain flexibly controllable excitation voltage or strengthen voltage effect, and becomes the function such as generating voltage
Can, industry to improve its controllability, flexibility, but necessarily increases often in asymmetrical half-bridge structure basis through additional circuit
Structure, volume, cost, loss etc. are added；And unsteady flow system also often is significantly increased along with the increase of Magnetic isolation link
Volume weight and cost loss of system etc..
The considerable novel unsteady flow main circuit occurred at present does not adapt to have simultaneously to be worked at the same time more than a phase winding
Occasion, and consider the overall efficiency of motor, the magnetic pole overlap coefficient of actually most of existing switched reluctance machines is all
It is greater than zero, that is to say, that when working according to rotor position information standard, certainly exist work while more than a phase winding
Operating condition, especially greater than or equal to four phase windings switched reluctance machines, polyphase windings work at the same time, and a when such as phase excitation is another
Mutually power generation etc. then must take into account this point in current transformer design, this has realistic meaning very much.
In certain application fields of switched reluctance motor system, for example power generation of automobile current generator, field non-transformer area
Be driven by electricity etc. occasion, need according to different demands, carry out power generation and electric operation respectively in different periods, then, one
It covers current transformer and adapts to power generation and electronic different operating condition simultaneously, then certainly will reduce system cost, reduce volume weight, especially add again
Control model close to if, due to controller without complicate, certainly will have extensive prospect.
For switch reluctance generator as speed-changing wind power generator in application, wind-powered electricity generation operating condition is complicated, especially grid-connected or direct current is micro-
It is high to the ability of regulation and control requirement of converter system when operation off the net, keep output end generating voltage controllable, in response under special operation condition
Flexibly controllable excitation voltage etc. certainly will be removed and be mentioned above if can be realized based on simple structure and easy regulation
Outside the advantage arrived, the reliability of converter system can be also improved.
Summary of the invention
According to above background technique, present invention proposes one kind based on improved letter under traditional asymmetrical half-bridge structure
Easy structure half is encouraged oneself, excitation voltage generating voltage is controllable, adapts to electronic and generator operation the more function of switched reluctance machines simultaneously
It can current transformer and its regulation method.
The technical solution of the present invention is as follows:
A kind of small-power half is encouraged oneself switched reluctance machines simple multifunctional current transformer, by capacitor, battery, the first phase around
Group main circuit, the second phase winding main circuit, third phase winding main circuit, the 4th phase winding main circuit composition, technical characteristic is,
The capacitor and the battery are connected in series, and capacitor anode connects battery positive voltage, the first phase winding master
Circuit, the second phase winding main circuit, the third phase winding main circuit, between the 4th phase winding main circuit it is in parallel even
It connects, and their three leading-out terminals are separately connected capacitor anode, battery positive voltage i.e. capacitor anode, storage battery negative
Pole；
First phase winding main circuit is by first switch tube, second switch, first diode, the second diode, the first phase
Winding composition, technical characteristic are that the first switch tube anode connects capacitor anode, second diode cathode, the
One switch tube cathode connects the first diode cathode, first phase winding one end, and first diode anode connects electric power storage
Pond anode, that is, capacitor anode, the first phase winding other end connection second switch tube anode, the second diode anode, second
It switchs tube cathode and connects battery terminal negative；Second phase winding main circuit by third switching tube, the 4th switching tube, third diode,
4th diode, the second phase winding composition, third phase winding main circuit by the 5th switching tube, the 6th switching tube, the 5th diode,
6th diode, third phase winding composition, the 4th phase winding main circuit by the 7th switching tube, the 8th switching tube, the 7th diode,
8th diode, the 4th phase winding composition, their technical characteristic is, the second phase winding main circuit, third phase winding main circuit,
The respective internal structure of 4th phase winding main circuit is identical as the first phase winding main circuit internal structure, and the second phase winding master
It is circuit, third phase winding main circuit, the third switching tube in the 4th phase winding main circuit, the 5th switching tube, described
First switch tube and the 4th switching tube, the 6th switch in the corresponding first phase winding main circuit of 7th switching tube
Pipe, the 8th switching tube correspond to second switch, the third diode, the 5th diode, the 7th diode
Corresponding first diode, the 4th diode, the 6th diode, the 8th diode pair answer the second diode, institute
Corresponding first phase winding of the second phase winding, the third phase winding, the 4th phase winding is stated, detailed connection relationship is no longer superfluous
It states.
A kind of control method of half self-excitation switched reluctance machines simple multifunctional current transformer of small-power of the invention are as follows: this hair
The original state of all electronic power switch pipes is off-state in bright current transformer；The control of all electronic power switch pipes is equal
It is realized by special controller according to detection signal output；
When switched reluctance machines are run as generator: according to switch reluctance generator operation logic, in conjunction with rotor position
Confidence breath is closed at conducting first switch tube and second switch when detecting that the first phase winding need to be powered on first,
It is jointly the first phase winding for electrical excitation by capacitor and battery, during the excitation stage, according to switch reluctance generator electricity
The needs for flowing chop control algorithm carry out copped wave regulation to first switch tube, and duty cycle of switching is up to 1, with specific reference to preceding
Current value during one phase winding works at the end of the excitation stage determines, if previous phase winding works, is believed according to rotor-position
Breath reach the excitation stage must at the end of previous phase winding electric current cannot reach desirable value when, then arrive a first phase winding excitation
When first switch tube duty ratio be 1, i.e., as second switch the entire excitation stage keep normal open, otherwise work as previous phase
During winding works the excitation stage not yet at the end of electric current reached required maximum value, then arrive first when first phase winding excitation
Switching tube is first closed conducting, and winding current turns off when reaching maximum value, and subsequent to reclose conducting when being lower than lower limit value, so switch moves
Make, until the first phase winding excitation stage terminated to simultaneously turn off first switch tube and second switch again；If first switch tube accounts for
Sky is than being 1, when the first phase winding electric current cannot still reach required current value at the end of the excitation stage, only closes at the end of the excitation stage
Disconnected second switch, first switch tube remain closed on state, then the first phase winding is through the second diode and first switch tube
Closed circuit under passive state the first phase winding electric current energy rapid increase, until reached before defined maximum angle location point
Desirable value cannot still be reached to desirable value, or in defined maximum angle location point, then be turned off first switch tube；Then into
Entering power generating stage, the energy storage of the first phase winding flows through the second diode, first diode, and it charges to capacitor and exports electric energy,
Until the first phase winding generation current is down to zero under the effect of capacitor both ends backward voltage, the work of the first phase winding terminates；
The above are to output voltage, i.e. capacitor both ends generating voltage is not done the first phase winding work under regulation requires and is adjusted
Prosecutor method, when in order in response under variable-speed wind-power operating condition, when needing to reduce generating voltage, and excitation stage first switch tube before this
When duty ratio is less than 1, duty cycle of switching of the first switch tube in the excitation stage increases；
According to rotor position information, when the second phase winding, third phase winding, the 4th phase winding being needed to devote oneself to work, they
Respectively the operation control mode of main circuit is identical as aforementioned first phase winding main circuit at place, and foregoing each component is corresponding
Relationship, details are not described herein.
When switched reluctance machines are as motor running, according to switched reluctance motor operation logic, in conjunction with rotor position
Confidence breath, when detecting that the first phase winding need to be powered on, first second switch closure conducting, first switch tube according to
PWM mode work, largest duty cycle 1, minimum zero, with specific reference to the Rotating speed measring value to switched reluctance motor and give
Relationship between constant speed angle value determines that when given speed is greater than actually detected velocity amplitude, duty ratio increases, otherwise reduces, from
And realize the control of switched reluctance motor speed control system；Similarly, it when other phase windings need to be powered on, is opened according to correspondence
The identical control model for closing pipe carries out, and details are not described herein.
Technical effect of the invention mainly has:
(1) converter structure of the invention is simple, using the device of not more than traditional asymmetrical half-bridge structure, additional excitation
Power supply only one battery, and there is no Magnetic isolation electric appliance, so it is achieved that half self-excitation current transformer flexible, that controllability is strong,
Low, high reliablity is lost in small in volume.
(2) although additional field power supply only one battery, the introducing excitation of output terminal capacitor is combined, so that
Can be realized flexible enhanced excitation function when as generator, when first switch tube (by taking the first phase winding main circuit as an example, under
Together) when PWM switch motion excitation, it is equivalent to a BUCK chopper circuit, excitation voltage is adjusted；In addition, when needed, it can also
It is appropriate to reduce capacitor voltage at both ends, that is, generating voltage by the control to first switch tube, when adapting to such as variable speed generation
The needs of maximal power tracing control scheduling algorithm；In addition, as noted previously, as excitation electric energy needed for winding adds from battery
Capacitor, and voltage and energy storage are much larger than battery voltage rating and energy storage when rated capacitor, greatly alleviate electric power storage
The power supply in pond is born, and to charge the battery or the frequency of replacement battery substantially reduces, and reduces artificial participation.
(3) in power generating stage front winding electric current deficiency, first switch tube is connected by closure, disconnects second switch,
So that winding enters no-voltage freewheeling state, so that increase electric current faster, improves current transformer and adapt to operating condition width.
(4) it is independent of each other when each phase winding main circuit work of the invention, and without the influence for generating circulation, so can fit
It answers overlap coefficient to be greater than zero switched reluctance machines, i.e., there is main circuit where two phase windings to devote oneself to work simultaneously, typical state
It is that a winding is in power generating stage, certain adjacent phase winding is in excitation or freewheeling period, thus meet high density power generation needs,
And some contributions finally are made to the reduction of torque pulsation.
(5) when current transformer of the invention is switched reluctance motor operation service, without increasing any hardware, without new
Increase any detection limit and control amount, the operation that regulation method is similar to switch reluctance generator controls, to reduce system
Complexity is controlled, volume is reduced, reduces costs, and supply voltage can be adjustable with larger range, utilize the control of controller
System realizes flexibly speed regulation；In addition, as generator operation starting when, naturally can first with motor working condition realize self-starting, nothing
External impetus is needed to input in advance.
Detailed description of the invention
Fig. 1 show a kind of half self-excitation switched reluctance machines simple multifunctional converter structure figure of small-power of the invention.
Specific embodiment
The switched reluctance machines of the present embodiment are four phase windings, are respectively M/N/P/ by the adjacent sequential being distributed on stator
Tetra- phase winding of Q, every phase winding are made of two branch windings and are symmetrically wound in different stator salient poles, i.e., stator eight convex
Pole is the converter circuit of four phase winding switched reluctance machines of the present embodiment, in addition has controller according to needed for as shown in Fig. 1
Detection information is implemented to control to each switching tube of converter circuit；All switching tubes are IGBT or power MOSFET or GTR or carbon
The wholly-controled devices such as SiClx or gallium nitride.
A kind of small-power of the present invention half is encouraged oneself switched reluctance machines simple multifunctional current transformer, embodiment by: capacitor C,
Battery X, the first phase winding main circuit 1, the second phase winding main circuit 2, third phase winding main circuit 3, the 4th main electricity of phase winding
Road 4 forms, and capacitor C and battery X are connected in series, and capacitor C cathode connection battery X anode, the first phase winding master
Circuit 1, third phase winding main circuit 3, is connected in parallel between the 4th phase winding main circuit 4 at second phase winding main circuit 2, and
Their three leading-out terminals are separately connected capacitor C anode, battery X anode i.e. capacitor C cathode, battery X cathode；
First phase winding main circuit 1 is by first switch tube V1, second switch V2, first diode D1, the second diode
D2, the first phase winding M composition, first switch tube V1 anode connect capacitor C anode, the second diode D2 cathode, first switch
Pipe V1 cathode connects first diode D1 cathode, first one end phase winding M, and first diode D1 anode connects battery X anode
That is capacitor C cathode, the first phase winding M other end connect second switch V2 anode, the second diode D2 anode, second switch
Pipe V2 cathode connects battery X cathode；Second phase winding main circuit 2 is by third switching tube V3, the 4th switching tube V4, the three or two pole
Pipe D3, the 4th diode D4, the second phase winding N composition, third phase winding main circuit 3 is by the 5th switching tube V5, the 6th switching tube
V6, the 5th diode D5, the 6th diode D6, third phase winding P composition, the 4th phase winding main circuit 4 by the 7th switching tube V7,
8th switching tube V8, the 7th diode D7, the 8th diode D8, the 4th phase winding Q composition, the second phase winding main circuit 2, third
Phase winding main circuit 3, the respective internal structure of the 4th phase winding main circuit 4 are identical as 1 internal structure of the first phase winding main circuit,
And third switching tube V3 in the second phase winding main circuit 2, third phase winding main circuit 3, the 4th phase winding main circuit 4,
First switch tube V1 and the 4th switching tube in the corresponding first phase winding main circuit 1 of five switching tube V5, the 7th switching tube V7
V4, the 6th switching tube V6, the 8th switching tube V8 correspond to second switch V2, third diode D3, the 5th diode D5, the seven or two
Pole pipe D7 corresponds to first diode D1, corresponding second diode of the 4th diode D4, the 6th diode D6, the 8th diode D8
D2, the second phase winding N, third phase winding P, the corresponding first phase winding M of the 4th phase winding Q, detailed connection relationship repeat no more.
The capacitor C value of the present embodiment is larger, and its both end voltage value is significantly greater than battery X when need to meet rated condition
Load voltage value.
A kind of control method of half self-excitation switched reluctance machines simple multifunctional current transformer of the small-power of the present embodiment are as follows: this
The original state of all electronic power switch pipes is off-state in embodiment current transformer；The control of all electronic power switch pipes
System is realized by special controller according to detection signal output；
When the switched reluctance machines of the present embodiment are run as generator: according to switch reluctance generator operation logic,
In conjunction with rotor position information, when detecting that the first phase winding M need to be powered on, it is closed at conducting first switch tube V1 first
It is jointly the first phase winding M for electrical excitation, circuit by capacitor C and battery X are as follows: X-C-V1-M- with second switch V2
V2-X, first diode D1 and the cut-off of the second diode D2 reverse bias, during the excitation stage, according to switch reluctance generator electricity
The needs for flowing chop control algorithm carry out copped wave regulation to first switch tube V1, and duty cycle of switching is up to 1, minimum zero,
It is determined with specific reference to the current value at the end of the excitation stage during the work of previous phase winding, if previous phase winding works, according to
Rotor position information reach the excitation stage must at the end of previous phase winding electric current cannot reach desirable value when, then arrive first
First switch tube duty ratio when phase winding M excitation is 1, i.e., keeps normal in the entire excitation stage as second switch V2
It is logical, on the contrary during the work of previous phase winding the excitation stage not yet at the end of electric current reached required maximum value, then arrive originally the first phase
First switch tube when winding M excitation is first closed conducting, and winding current turns off when reaching maximum value, subsequent to be closed when being lower than lower limit value again
Conducting, such switch motion are closed, until the first phase winding M excitation stage terminated to simultaneously turn off first switch tube V1 and second again and open
Close pipe V2；If first switch tube duty ratio is 1, the first phase winding M electric current cannot still reach required electric current at the end of the excitation stage
When value, an only shutdown second switch V2 at the end of the excitation stage, first switch tube V1 remains closed on state, then the first phase around
Group closed circuit of the M through the second diode D2 and first switch tube V1 under passive state the first phase winding M electric current can quickly on
It rises, until reaching desirable value before defined maximum angle location point, or cannot still be reached in defined maximum angle location point
To desirable value, then first switch tube V1 is turned off；Subsequently into power generating stage, the energy storage of the first phase winding M flows through the two or two pole
Pipe D2, first diode D1 charge to capacitor C and export electric energy, until first under the effect of capacitor C both ends backward voltage
Phase winding M generation current is down to zero, and the first phase winding M work just terminates；
The above are to output voltage, i.e. the both ends capacitor C generating voltage does not do the first phase winding M work under regulation requires
Regulation method, under in order in response to variable-speed wind-power operating condition MPPT maximum power point tracking control or Energy optimization control needs (according to
Switched reluctance machines mathematical model, when motor speed changes, Based Motional Electromotive Force changes immediately, and Based Motional Electromotive Force and generating voltage
When balance, generating set generating efficiency is maximum, and it is therefore necessary to generating voltages adjustable under variable speed generation occasion), it needs
When reducing generating voltage, and (otherwise systems face power generation is shut down when excitation stage first switch tube V1 duty ratio is less than 1 before this
Danger), first switch tube V1 the excitation stage duty cycle of switching increase to meet the requirements；
According to rotor position information, when the second phase winding N, third phase winding P, the 4th phase winding Q being needed to devote oneself to work, it
Where respectively main circuit operation control mode it is identical with aforementioned first phase winding main circuit 1, as previously described each component
Corresponding relationship, details are not described herein.
When switched reluctance machines are as motor running, according to switched reluctance motor operation logic, in conjunction with rotor position
Confidence breath, when detecting that the first phase winding M need to be powered on, the closure conducting of second switch V2 first, first switch tube V1
It works according to PWM mode, largest duty cycle 1, minimum zero, with specific reference to the Rotating speed measring value to switched reluctance motor
Relationship between given speed value determines that, when given speed is greater than actually detected velocity amplitude, duty ratio increases, otherwise subtracts
It is small, to realize the control of switched reluctance motor speed control system；Similarly, when other phase windings need to be powered on, according to right
The identical control model of corresponding switching tube carries out, and details are not described herein.
When switched reluctance machines are as generator starting, operation control is identical as motor, and works as capacitor C
When both end voltage is higher than minimum limits value and is higher than battery X voltage rating, then it is transferred to generator operation state of a control.
It should be noted that since each phase winding main circuit structure of the present invention is identical, do not done mutually between them when work
Disturb, work independently, thus present invention only requires simple plus-minus phase winding main circuit quantity and cooperation with rotor position information into
Current transformer design and operation control to the switched reluctance machines of non-four phase winding can be completed, so needle in the identical control of row
It is also that protection scope of the present invention should be unquestionable to other number of phases switched reluctance machines.
Claims (2)
- The switched reluctance machines multi-functional converter 1. a kind of small-power half is encouraged oneself, by capacitor, battery, the main electricity of the first phase winding Road, the second phase winding main circuit, third phase winding main circuit, the 4th phase winding main circuit composition, technical characteristic is the electricity Container and the battery are connected in series, and capacitor anode connects battery positive voltage, the first phase winding main circuit, institute It states the second phase winding main circuit, the third phase winding main circuit, be connected in parallel between the 4th phase winding main circuit, and Their three leading-out terminals are separately connected capacitor anode, battery positive voltage i.e. capacitor anode, battery terminal negative；First phase winding main circuit is by first switch tube, second switch, first diode, the second diode, the first phase winding Composition, the first switch tube anode connect capacitor anode, second diode cathode, and first switch tube cathode connects institute First diode cathode, first phase winding one end are stated, first diode anode connects battery positive voltage, that is, capacitor anode, The first phase winding other end connects the second switch tube anode, the second diode anode, and second switch tube cathode connects electric power storage Pond cathode；Second phase winding main circuit by third switching tube, the 4th switching tube, third diode, the 4th diode, the second phase around Group composition, third phase winding main circuit by the 5th switching tube, the 6th switching tube, the 5th diode, the 6th diode, third phase around Group composition, the 4th phase winding main circuit by the 7th switching tube, the 8th switching tube, the 7th diode, the 8th diode, the 4th phase around Group composition, the respective internal structure and first of the second phase winding main circuit, third phase winding main circuit, the 4th phase winding main circuit Phase winding main circuit internal structure is identical, and the second phase winding main circuit, third phase winding main circuit, the 4th main electricity of phase winding The third switching tube, the 5th switching tube in road, the in the corresponding first phase winding main circuit of the 7th switching tube One switching tube and the 4th switching tube, the 6th switching tube, the 8th switching tube correspond to second switch, described Third diode, the 5th diode, the 7th diode pair answer first diode, the 4th diode, described Six diodes, the 8th diode pair answer the second diode, second phase winding, the third phase winding, the described 4th Phase winding corresponds to the first phase winding.
- The control method of switched reluctance machines multi-functional converter 2. a kind of small-power according to claim 1 half is encouraged oneself, It is characterized in that: the original state of all electronic power switch pipes is off-state in the current transformer；All power electronics are opened The control for closing pipe is realized by special controller according to detection signal output；When switched reluctance machines are run as generator: according to switch reluctance generator operation logic, believing in conjunction with rotor-position Breath is closed at conducting first switch tube and second switch, by electricity when detecting that the first phase winding need to be powered on first Container and battery are the first phase winding for electrical excitation jointly, during the excitation stage, are cut according to switch reluctance generator electric current The needs of wave control algolithm carry out copped wave regulation to first switch tube, and duty cycle of switching is up to 1, with specific reference to previous phase Current value during winding works at the end of the excitation stage determines, if previous phase winding works, is existed according to rotor position information Reach the excitation stage must at the end of previous phase winding electric current when cannot reach desirable value, then when arriving first phase winding excitation First switch tube duty ratio is 1, i.e., keeps normal open in the entire excitation stage as second switch, otherwise work as previous phase winding During work the excitation stage not yet at the end of electric current reached required maximum value, then arrive first switch when this first phase winding excitation Pipe is first closed conducting, and winding current turns off when reaching maximum value, subsequent to reclose conducting when being lower than lower limit value, such switch motion, Until the first phase winding excitation stage terminated to simultaneously turn off first switch tube and second switch again；If first switch tube duty ratio It is 1, when the first phase winding electric current cannot still reach required current value at the end of the excitation stage, only shutdown the at the end of the excitation stage Two switching tubes, first switch tube remain closed on state, then the first phase winding closing through the second diode and first switch tube Circuit first phase winding electric current energy rapid increase under passive state is closed, until reaching institute before defined maximum angle location point It needs to be worth, or cannot still reach desirable value in defined maximum angle location point, be then turned off first switch tube；Subsequently into hair Electric stage, the energy storage of the first phase winding flow through the second diode, first diode, charge to capacitor and export electric energy, until The first phase winding generation current is down to zero under the effect of capacitor both ends backward voltage, and the work of the first phase winding terminates；The above are to output voltage, i.e. capacitor both ends generating voltage does not do the first phase winding work regulation side under regulation requires Method, when electricity generation system, which needs, reduces generating voltage, and when excitation stage first switch tube duty ratio is less than 1 before this, first Duty cycle of switching of the switching tube in the excitation stage increases；According to rotor position information, when the second phase winding, third phase winding, the 4th phase winding being needed to devote oneself to work, their places The operation control mode of respective main circuit is identical as aforementioned first phase winding main circuit, corresponding according to foregoing each component Relationship；When switched reluctance machines are as motor running, according to switched reluctance motor operation logic, believe in conjunction with rotor-position Breath, when detecting that the first phase winding need to be powered on, second switch closure conducting first, first switch tube is according to PWM mould Formula work, largest duty cycle 1, minimum zero, with specific reference to the Rotating speed measring value to switched reluctance motor and give constant speed Relationship between angle value determines that when given speed is greater than actually detected velocity amplitude, duty ratio increases, otherwise reduces, thus real The control of existing switched reluctance motor speed control system；Similarly, when other phase windings need to be powered on, according to corresponding switching tube Identical control model carry out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810242704.8A CN108448968B (en) | 2018-03-21 | 2018-03-21 | A kind of half self-excitation switched reluctance machines simple multifunctional current transformer of small-power |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004208441A (en) * | 2002-12-26 | 2004-07-22 | Nissan Motor Co Ltd | Drive circuit for sr motor |
| CN103475292A (en) * | 2013-08-13 | 2013-12-25 | 燕山大学 | Switch magnetic resistance generator system capable of realizing rapid excitation/demagnetization |
| CN104638991A (en) * | 2015-01-28 | 2015-05-20 | 江苏大学 | Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof |
| CN205883097U (en) * | 2016-06-24 | 2017-01-11 | 姜坚波 | Encourage switched reluctance generator transformer soon and press power converter |
| CN107809195A (en) * | 2017-02-20 | 2018-03-16 | 天津工业大学 | A kind of level power circuit of switched reluctance machines four and application method |
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| CN102684579A (en) * | 2012-05-23 | 2012-09-19 | 天津工业大学 | Motor drive system for direct main drive of weaving machine |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004208441A (en) * | 2002-12-26 | 2004-07-22 | Nissan Motor Co Ltd | Drive circuit for sr motor |
| CN103475292A (en) * | 2013-08-13 | 2013-12-25 | 燕山大学 | Switch magnetic resistance generator system capable of realizing rapid excitation/demagnetization |
| CN104638991A (en) * | 2015-01-28 | 2015-05-20 | 江苏大学 | Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof |
| CN205883097U (en) * | 2016-06-24 | 2017-01-11 | 姜坚波 | Encourage switched reluctance generator transformer soon and press power converter |
| CN107809195A (en) * | 2017-02-20 | 2018-03-16 | 天津工业大学 | A kind of level power circuit of switched reluctance machines four and application method |
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