CN107994758A - The space vector modulating method of nine switching power converters - Google Patents
The space vector modulating method of nine switching power converters Download PDFInfo
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- CN107994758A CN107994758A CN201711314058.3A CN201711314058A CN107994758A CN 107994758 A CN107994758 A CN 107994758A CN 201711314058 A CN201711314058 A CN 201711314058A CN 107994758 A CN107994758 A CN 107994758A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Abstract
The present invention provides a kind of space vector modulating method of nine switch converters, and the method comprising the steps of judges hexagon residing for two reference voltage vectors using exchange end reference voltage original value up and down；The center vector of two reference voltage vectors and its residing hexagon makes the difference respectively, two reference voltage vectors are transformed into six switch converters voltage vector space planes from nine switch converters voltage space vector planes, six switch converters equivalent voltage vectors are selected, and determine equivalent voltage vector action time；Six switch converters voltage vectors are mapped to nine switch converters voltage vector planes, while six switch converters voltage vector action times were converted to for nine switch converters voltage vector action times.Beneficial effect is this method it can be readily appreciated that the complexity of nine switch converters modulator approaches is simplified, easy to Digital Realization.Contribute to the working mechanism of nine switch converters of understanding, the application to nine switch converters has important practical value.
Description
Technical field
The present invention relates to a kind of space vector modulating method of nine switching power converters.
Background technology
As power inverter minimizes, the continuous development of high reliability and low-power consumption, scholars are to power inverter
The improvement of topological structure is made that extensive work, and achieves a large amount of achievements.Nine switch converters can realize two three-phase alternating currents
The independent control at end, switch back-to-back type power inverter compared to tradition 12 reduces switching device and phase from topological structure
The drive circuit answered, reduces volume, reduces system power dissipation, its structure is as shown in Figure 1.
Nine switch converters can possess the output of two-way three-phase alternating current at the same time, it can be achieved that the independent control of two three-phase alternating currents load
System, its operational mode can be divided into runs two kinds with frequency operation and alien frequencies.
Space Vector Modulation Strategy has been widely used for the control of power inverter, can using Space Vector Modulation Strategy
Realize the control of different type power inverter, but the Space Vector Modulation Strategy of different topology structure power inverter is not
Together, the space vector modulating method of nine switch converters is together decided on out by the voltage vector of upper and lower two ac output ends
The working status of device is closed, rather than single voltage vector determines the on off state of switching device in traditional sense.Similarly, nine open
The modulator approach of converter is closed, also different from the modulator approach of other power inverters.
The content of the invention
For the work characteristics of nine switch converters, the present invention provides a kind of space vector modulation side of nine switch converters
Method, this method is at the same time suitable for same frequency and the alien frequencies operating mode of nine switch converters.
To realize control of nine switch converters under same frequency and alien frequencies operating mode, the present invention provides one kind nine to switch
The space vector modulating method of converter, this method comprises the following steps：
1. judge hexagon residing for two reference voltage vectors using exchange end reference voltage original value up and down；
2. the center vector of two reference voltage vectors and its residing hexagon makes the difference respectively, by two reference voltage vectors
Six switch converters voltage vector space planes are transformed into from nine switch converters voltage space vector planes, select six switches to become
Parallel operation equivalent voltage vector, and determine equivalent voltage vector action time.
3. six switch converters voltage vectors are mapped to nine switch converters voltage vector planes, while six switches are become
Parallel operation voltage vector action time was converted to for nine switch converters voltage vector action times.
Present invention has the advantages that nine switch converters voltage vectors are converted to six switch converters voltage vectors, algorithm
It can be readily appreciated that the complexity of nine switch converters modulator approaches is enormously simplify, easy to Digital Realization.This method helps to manage
The working mechanism of nine switch converters is solved, and the modulation to more exchange end converters has important reference value, opens nine
The application for closing converter has important practical value.
Brief description of the drawings
Fig. 1 is nine switch converters voltage space vector plane subregions；
Two reference voltage vectors that Fig. 2 is the present invention are in equivalent voltage space vector plane during sector；
Two reference voltage vectors that Fig. 3 is the present invention are in adjacent sectors equivalent voltage space vector plane；
Two reference voltage vectors that Fig. 4 is the present invention are in non-conterminous sector equivalent voltage space vector plane.
Embodiment
The space vector modulating method of nine switch converters of the present invention is illustrated with reference to attached drawing.Need to illustrate herein
, it is used to help understand the present invention for the explanation of these embodiments, but do not form limitation of the invention.
The space vector modulating method of nine switch converters of the present invention includes the following steps：
1. judge hexagon residing for two reference voltage vectors using exchange end reference voltage original value up and down.By nine switches
Converter voltage vector space plane is divided into 6 sectors, and each sector corresponds to a hexagon, contains six in the hexagon
Voltage vector, and can the equivalent voltage vector into six switch converters；The sector residing for two reference voltages is determined at the same time.
2. the center vector of two reference voltage vectors and its residing hexagon makes the difference respectively, by two reference voltage vectors
Six switch converters voltage vector space planes are transformed into from nine switch converters voltage space vector planes, select six switches to become
Parallel operation equivalent voltage vector, and determine equivalent voltage vector action time.When two reference voltage vectors are in common sector,
By all voltage vector length reductions of nine switching voltage space vector planes to the 1/2 of primary voltage vector length, two with reference to electricity
Pressure vector remains unchanged；
Center voltage vector (the V in its residing hexagon is individually subtracted with two reference voltage vectorsdc/ 3) nine are obtained to open
Voltage vector under converter voltage space vector plane is closed to convert to the voltage under six switch converters voltage space vector planes
Vector；
When two reference voltage vectors are in different sectors, by nine all voltage vectors of switching voltage space vector plane
Length reduction remains unchanged to the 1/4 of primary voltage vector length, two reference voltage vector；
Center voltage vector (the V in its residing hexagon is individually subtracted with two reference voltage vectorsdc/ 6) nine are obtained to open
Voltage vector under converter voltage space vector plane is closed to convert to the voltage under six switch converters voltage space vector planes
Vector.
3. six switch converters voltage vectors are mapped to nine switch converters voltage vector planes, while six switches are become
Parallel operation voltage vector action time was converted to for nine switch converters voltage vector action times.
What the space vector modulating method function of nine switch converters of the present invention was realized in：
Nine switching converter topologies set direct current mother in the space vector modulating method of nine switch converters of the present invention
Line voltage is Vdc, three bridge arms are shared, are respectively bridge arm A, bridge arm B and bridge arm C, have three kinds of work shapes for any bridge arm
State.Thus nine switching converter topologies can obtain 27 nine switch converters space vector of voltage, become according to nine switches of Fig. 2
Nine switch converters voltage vectors can be converted to two six switches by parallel operation and six switch converters space vector of voltage compares figures
The combination of converter voltage vector.Nine switch converters voltage vector spatial distributions are as shown in Figure 4.
1. nine switch converters voltage space vector planes are divided into 6 sectors, as shown in Figure 1, L1, L2 and L3 are opened nine
Close converter voltage space vector plane and be divided into 6 sectors, be respectively：Ith, II, III, IV, V and VI；Each sector corresponds to one
Hexagon, the voltage vector corresponding to each hexagon are consistent with six switch converters space vector of voltage.It is disclosed by the invention
Nine switch converters and six switch converters space vector of voltage compares figures are as shown in the table.
2. when two reference voltage vectors are in common sector, nine switch converters voltage space vector planes are reduced
To primary voltage space vector plane 1/2, as shown in Figure 2；Two reference voltage vector VU *、VL *Respectively with voltage vector OO1′(Vdc/
3) make the difference, obtain nine switch converters voltage space vector planes are equivalent equivalent to six switch converters voltage vector planes
Vector VU *’With VL *’；Using six switch converters voltage space vector modulation methods, V is obtainedU *’With VL *’Equivalent resultant vector,
That is VU *’=Tu2*V2+Tu3* V3 and VL *’=Tl1*V1+Tl2* V2, wherein V2 and V3 can synthesize VU *’, and action time is respectively Tu2
With Tu3；V1 and V2 can synthesize VL *’, and action time is respectively Tl1With Tl2。
Six switch converters voltage vectors are mapped to nine switch converters voltage vector planes, obtain nine switch converters electricity
It may be V30, V22, V71, V72 or V20 to press vector, if Tu2>Tl2, corresponding nine switch converters voltage vector for V30,
V22, V71, V20, and corresponding nine switch converters voltage vector action time is Tu3、Tl2、Tl1、Tu2-Tl2；Otherwise, it is corresponding
Nine switch converters voltage vectors be V30, V22, V71, V72, and corresponding nine switch converters voltage vector action time
For Tu3、Tu2、Tl1、Tl2-Tu2。
When two reference voltage vectors are in different sectors, nine switch converters voltage space vector planes are contracted to
Primary voltage space vector plane 1/4, point following two situations：
(1) if the sector residing for two reference voltage vectors is adjacent, as shown in figure 3, making reference voltage vector VU *With voltage
Vector OO2′(Vdc/ 6) make the difference, VL *With voltage vector OO1′(Vdc/ 6) make the difference, obtain nine switch converters space vector of voltage
The equivalent equipollent vectors V to six switch converters voltage vector planes of planeU *’With VL *’；Utilize six switch converters voltage spaces
Vector modulation method, obtains VU *’With VL *’Equivalent resultant vector, i.e. VU *’=Tu3*V3+Tu4* V4 and VL *’=Tl2*V2+Tl3*
V3, wherein V3 and V4 can synthesize VU *’, and action time is respectively Tu3With Tu4；V2 and V3 can synthesize VL *’, and action time difference
For Tl2With Tl3。
Six switch converters voltage vectors are mapped to nine switch converters voltage vector planes, obtain nine switch converters electricity
It may be V40, V33, V72, V73 or V30 to press vector, if Tu3>Tl3, corresponding nine switch converters voltage vector for V40,
V33, V72, V30, and corresponding nine switch converters voltage vector action time is Tu4、Tl3、Tl2、Tu3-Tl3；Otherwise, it is corresponding
Nine switch converters voltage vectors be V40, V33, V72, V73, and corresponding nine switch converters voltage vector action time
For Tu4、Tu3、Tl2、Tl3-Tu3。
(2) if the sector residing for two reference voltage vectors is non-conterminous, as shown in figure 4, making reference voltage vector VU *With electricity
Press vector OO3' make the difference, VL *With voltage vector OO1' make the difference, obtain nine switch converters voltage space vector planes are equivalent extremely
The equipollent vectors V of six switch converters voltage vector planesU *’With VL *’；Utilize six switch converters voltage space vector modulation sides
Method, obtains VU *’With VL *’Equivalent resultant vector, i.e. VU *’=Tu4*V4+Tu5* V5 and VL *’=Tl2*V2+Tl3* V3, wherein V4 with
V5 can synthesize VU *’, and action time is respectively Tu4With Tu5；V2 and V3 can synthesize VL *’, and action time is respectively Tl2With Tl3.Will
Six switch converters voltage vectors are mapped to nine switch converters voltage vector planes, obtain nine switch converters voltage vectors and are
V40, V50, V72, V73, corresponding nine switch converters voltage vector action time are Tu4、Tu5、Tl2、Tl3。
3. obtain combining the nine switch converters voltage vectors represented and corresponding nine switch by two 6 switching vector selectors according to 2
Converter voltage vector action time, the vector order formulated by the minimum principle of variable condition carry out vector selection, open nine
Close the on off state corresponding to each bridge arm of converter and carry out decoding so as to finally obtain the drive of nine switch converters switching devices
Dynamic waveform.
Claims (3)
1. a kind of space vector modulating method of nine switch converters, it is characterized in that：This method comprises the following steps：
1. judge hexagon residing for two reference voltage vectors using exchange end reference voltage original value up and down；
2. the center vector of two reference voltage vectors and its residing hexagon makes the difference respectively, by two reference voltage vectors from nine
Switch converters voltage space vector plane is transformed into six switch converters voltage vector space planes, selects six switch converters
Equivalent voltage vector, and determine equivalent voltage vector action time；
3. six switch converters voltage vectors are mapped to nine switch converters voltage vector planes, while by six switch converters
Voltage vector action time was converted to for nine switch converters voltage vector action times.
2. nine switch converters voltage space vector modulation method according to claim 1, it is characterized in that：The step is 1.
Operating method be：
Nine switch converters voltage vector space planes are divided into 6 sectors, each sector corresponds to a hexagon, six side
Contain six voltage vectors in shape, and can the equivalent voltage vector into six switch converters；Two reference voltage institutes are determined at the same time
The sector at place.
3. nine switch converters voltage space vector modulation method according to claim 1, it is characterized in that：The step is 2.
Specific method be：
When two reference voltage vectors are in common sector, by all voltage vector length of nine switching voltage space vector planes
The 1/2 of primary voltage vector length is narrowed down to, two reference voltage vectors remain unchanged；
Center voltage vector (the V in its residing hexagon is individually subtracted with two reference voltage vectorsdc/ 3) change of nine switches is obtained
Voltage vector is converted to the voltage vector under six switch converters voltage space vector planes under parallel operation voltage space vector plane；
When two reference voltage vectors are in different sectors, by all voltage vector length of nine switching voltage space vector planes
The 1/4 of primary voltage vector length is narrowed down to, two reference voltage vectors remain unchanged；
Center voltage vector (the V in its residing hexagon is individually subtracted with two reference voltage vectorsdc/ 6) change of nine switches is obtained
Voltage vector is converted to the voltage vector under six switch converters voltage space vector planes under parallel operation voltage space vector plane.
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| CN201711314058.3A CN107994758B (en) | 2017-12-12 | 2017-12-12 | Space vector modulation method of nine-switch power converter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417060A (en) * | 2019-09-06 | 2019-11-05 | 天津城建大学 | Nine switching mode double-fed blower fan systems and control method |
| CN111245265A (en) * | 2020-03-05 | 2020-06-05 | 天津城建大学 | Nine-switch converter voltage space vector modulation method and system |
| CN111342722A (en) * | 2020-04-06 | 2020-06-26 | 华中科技大学 | Nine-switch driving system for magnetic field modulation switched reluctance motor and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008154318A (en) * | 2006-12-14 | 2008-07-03 | Meiji Univ | Nine switch inverter independently driving two ac motor units and its control method |
| CN103986356A (en) * | 2014-05-13 | 2014-08-13 | 湖南大学 | Control system and method of cascaded multi-level inverter |
| CN104320012A (en) * | 2014-11-18 | 2015-01-28 | 河南城建学院 | Five-level simplified algorithm based on three levels |
| CN105871240A (en) * | 2016-05-18 | 2016-08-17 | 天津城建大学 | Direct power control system of nine-switch converter and control method |
-
2017
- 2017-12-12 CN CN201711314058.3A patent/CN107994758B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008154318A (en) * | 2006-12-14 | 2008-07-03 | Meiji Univ | Nine switch inverter independently driving two ac motor units and its control method |
| CN103986356A (en) * | 2014-05-13 | 2014-08-13 | 湖南大学 | Control system and method of cascaded multi-level inverter |
| CN104320012A (en) * | 2014-11-18 | 2015-01-28 | 河南城建学院 | Five-level simplified algorithm based on three levels |
| CN105871240A (en) * | 2016-05-18 | 2016-08-17 | 天津城建大学 | Direct power control system of nine-switch converter and control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417060A (en) * | 2019-09-06 | 2019-11-05 | 天津城建大学 | Nine switching mode double-fed blower fan systems and control method |
| CN110417060B (en) * | 2019-09-06 | 2024-05-31 | 天津城建大学 | Nine-switch type double-fed fan system and control method |
| CN111245265A (en) * | 2020-03-05 | 2020-06-05 | 天津城建大学 | Nine-switch converter voltage space vector modulation method and system |
| CN111342722A (en) * | 2020-04-06 | 2020-06-26 | 华中科技大学 | Nine-switch driving system for magnetic field modulation switched reluctance motor and control method |
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Effective date of registration: 20230328 Address after: Building 3, Jinbige Community, No. 65 Jiefang Road, Nanguan District, Changchun City, Jilin Province, 130022 Patentee after: Kunyu Intelligent Control (Jilin) Technology Co.,Ltd. Address before: 300384 No. 26, Jing Jing Road, Xiqing District, Tianjin Patentee before: Tianjin Chengjian University |