CN103947098A - Power conversion device - Google Patents
Power conversion device Download PDFInfo
- Publication number
- CN103947098A CN103947098A CN201280057152.4A CN201280057152A CN103947098A CN 103947098 A CN103947098 A CN 103947098A CN 201280057152 A CN201280057152 A CN 201280057152A CN 103947098 A CN103947098 A CN 103947098A
- Authority
- CN
- China
- Prior art keywords
- inverter
- power
- pattern
- parallel
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/49—Combination of the output voltage waveforms of a plurality of converters
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
Abstract
Provided is a power conversion device whereby different voltage classes can be outputted by a single power conversion device without reducing the rated capacity. The present invention is configured from: an input transformer (2) having 3 K (where K is an integer of 2 or greater) secondary coils, an alternating-current power source (1) being connected to a primary coil; and three power conversion units (3) connected one-each to the secondary coils and configured so as to each output three-phase phase voltage using K unit inverters (5) for outputting single-phase alternating-current voltage at a desired frequency. The power conversion units (3) are configured so as to be switched between a series-connection mode for connecting the outputs of the K unit inverters (2) in series, and a parallel-connection mode for dividing the K unit inverters into a plurality of groups, connecting the outputs of the unit inverters within each group in series, and connecting the outputs of the plurality of inverter groups in parallel.
Description
Quoting of related application
The application based on and to require the applying date be the interests of the priority of No. 2011-253581st, the Japanese patent application on November 21st, 2011, its full content is comprised in herein by reference.
Technical field
The present invention relates to a kind of power-converting device that can change rated output voltage.
Background technology
In the past, as exporting one of power-converting device of many phase alternating current, known have taking the high capacity of power-converting device and Towards Higher Voltage as object, and in order to improve output waveform, and by being connected in series, the output of single-phase inverter one side forms each power-converting device of realizing mutually multiplex.
Proposed as for various experiment power supplies and other for the power-converting device towards general industry etc., form by the output of single-phase inverter one side is connected in series the scheme (for example, with reference to patent documentation 1) that device that each phase realized multiplex can runs steadily.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2001-268999 communique
Summary of the invention
Invent problem to be solved
Power-converting device shown in patent documentation 1 is used in electric source for test purposes that high order harmonic component is few, for example, and via the electric source for test purposes of the fan of polyphase AC motor, pump, compressor etc.At this moment, in the case of existing the alternating current motor that electric pressure is different, need to prepare power-converting device for each electric pressure, the cost with testing equipment rises, arranges the problems such as difficult of guaranteeing in place.In addition, simply utilize the output voltage control of transducer etc. to obtain variable voltage if think, because current-carrying capacity is certain, therefore have in the time having exported low-voltage the problem of the volume lowering of power-converting device.
The present invention completes in order to solve problem as above, and its object is to provide power-converting device of a kind of use just can not reduce rated capacity exports the power-converting device of different electric pressures.
For the means of dealing with problems
In order to achieve the above object, power-converting device of the present invention is characterised in that, comprise input transformer and K the power converter portion that unit inverter is exported respectively the phase voltage of three-phase of 3 uses, described input transformer connects AC power on armature winding, and there is the individual secondary winding of 3K (K is more than or equal to 2 integer), described unit inverter is connected one to one with described secondary winding, the single phase alternating current (A.C.) voltage of output expected frequency, described power converter portion is configured to and can switches to the pattern of being connected in series and the pattern that is connected in parallel, the described pattern that is connected in series is the pattern that the output of described K unit inverter is connected in series, the described pattern of being connected in parallel is that described K unit inverter is divided into multiple groups, the output of the unit inverter in this group is connected in series, and the pattern that the output-parallel of these multiple inverter groups is connected.
Invention effect
According to the present invention, can provide power-converting device of a kind of use just rated capacity can not reduced to export the power-converting device of different electric pressures.
Brief description of the drawings
Fig. 1 is the circuit structure diagram of the power-converting device that relates to of embodiments of the invention 1.
Fig. 2 is the circuit structure diagram of the unit inverter 5 in Fig. 1.
Fig. 3 is the each figure in mutually with the PWM figure of 6 single-phase unit inverters at power-converting device.
Fig. 4 is the each figure in mutually with the PWM figure of 3 single-phase unit inverters at power-converting device.
Fig. 5 is the circuit structure diagram of the power-converting device that relates to of embodiments of the invention 2.
Fig. 6 is the circuit structure diagram of the major part of the power-converting device that relates to of embodiments of the invention 3.
Embodiment
Below, with reference to accompanying drawing, embodiments of the invention are described.
Embodiment 1
Below, referring to figs. 1 through Fig. 3, the power-converting device that embodiments of the invention 1 are related to describes.
Fig. 1 is the circuit structure diagram of the power-converting device that relates to of embodiments of the invention 1.Supply with the three-phase alternating voltage of high pressure from AC power 1 to input transformer 2.Input transformer 2 has secondary winding group 2U1,2U2,2V1,2V2,2W1, the 2W2 of the secondary winding that possesses respectively multiple insulation, supply with alternating current from secondary winding group 2U1,2U2 to U phase power converter 3U, supply with alternating current from secondary winding group 2V1,2V2 to V phase power converter 3V, and supply with alternating current from secondary winding group 2W1,2W2 to W phase power converter 3W.The frequency that U phase power converter 3U, V phase power converter 3V, W phase power converter 3W export respectively to expect differs the single-phase alternating voltage of 120o phase place mutually, interconnect its one end as neutral point, the other end is connected with each terminal of alternating current motor 4 respectively., formed the power converter of three-phase by U phase power converter 3U, V phase power converter 3V and W phase power converter 3W.Below, the internal structure of U phase power converter 3U is described.Have, the internal structure of V phase power converter 3V and W phase power converter 3W is same structure with U phase power converter 3U substantially, therefore omits their explanation again.
U phase power converter 3U has the inverter 5U1～5U6 of unit.Fig. 2 is the circuit structure diagram of the unit inverter 5 identical with these unit inverter structures.Utilize diode rectifier circuit 51 and direct current smmothing capacitor 52, the alternating current of the secondary winding from input transformer 2 be transformed to direct current, and be transformed to single-phase inverter circuit 53 there is optional frequency, the single-phase alternating current of voltage.Single-phase inverter circuit 53 forms 2 positive side brachium pontis and 2 minus side brachium pontis bridge joints respectively with switch element.
Each unit Inverter Fed from each secondary winding of secondary winding group 2U1 to the inverter 5U1 of unit, 5U2,5U3, is connected in series their single-phase output as illustrated in fig. 1.Similarly, each unit Inverter Fed from each secondary winding of secondary winding group 2U2 to the inverter 5U4 of unit, 5U5,5U6, is connected in series their single-phase output as shown in figure.One end of the output of the inverter 5U1 of unit interconnects with one end of the output of the inverter 5V1 of unit, the 5W1 of other phases and forms neutral point.One end of the output of the inverter 5U3 of unit is connected via shutter 6U with one end of the output of the inverter 5U4 of unit.And one end of the output of the inverter 5U6 of unit, via shutter 7U, is connected with the U phase terminal of alternating current motor 4.
One end (neutral point) of the output of the inverter 5U1 of unit is connected via shutter 8U with one end of the output of the inverter 5U4 of unit.And one end of the output of the inverter 5U3 of unit is connected with one end of the output of the inverter 5U6 of unit with interphase reactor 10U via shutter 9U, the mid point of interphase reactor 10U is connected with the U phase terminal of alternating current motor 4.Below action is described.In the case of each of the inverter 5U1～5U6 of unit, 5V1～5V6,5W1～5W6 exported whole serials connected, in Fig. 1, make shutter 6U, 6V, 6W and 7U, 7V, 7W connect, making, in the situation of other shutters disconnections, becomes the power-converting device that former output has added up to the voltage of the output voltage gained of 6 unit inverters.This connection is called to the pattern of being connected in series.
On the other hand, shutter 6U, 6V, 6W and 7U, 7V, 7W are disconnected, make in the situation of shutter 8U, 8V, 8W and 9U, 9V, 9W connection, for example, U mutually in, being connected in series the synthetic output of inverter group of the inverter 5U1 of unit, 5U2,5U3 and the synthetic output that has been connected in series the inverter group of the inverter 5U4 of unit, 5U5,5U6 becomes the state being connected in parallel via interphase reactor 10U, gives the U phase voltage of alternating current motor 4.To V phase, W mutually too.This connection is called to the pattern of being connected in parallel.Be connected in parallel in pattern at this, with respect to the aforesaid pattern that is connected in series, can obtain rated output voltage is half, output-current rating power-converting device at double.
In the situation that being connected in parallel pattern, output one side of each inverter group in the U phase power converter 3U of portion, the V phase power converter 3V of portion and the W phase power converter 3W of portion is provided for respectively suppressing interphase reactor 10U, 10V and the 10W of current imbalance.But, also can not in the debatable situation of structure, omit these interphase reactors 10U, 10V and 10W at current imbalance.
In addition, in Fig. 1, the primary side of input transformer 2 is divided into secondary winding group 2U1 and secondary winding group 2U2 at U for example on mutually, using 3 windings as a group, and make it mutually there is phase shift, make be connected in series pattern and the polyphase rectifier circuit all under pattern with same phase shift that is connected in parallel is set up.But not necessarily must do like this, also can freely select the phase shift of the secondary winding of input transformer 2.
Shown in Fig. 3, be connected in series an example of the PWM figure under pattern.As shown in the figure, in this example, make the triangular wave carrier that becomes benchmark in positive side and 6 grades of skews of minus side, composition amounts to the triangular wave carrier 20 for PWM figure of 12 grades, by it and voltage reference sine wave 30 are compared and generate pwm pulse figure, the break-make of the switch element of the formation single-phase inverter to constituent parts inverter is controlled.In the situation that being connected in parallel pattern, make as illustrated in fig. 4 the triangular wave carrier that becomes benchmark in positive side and 3 grades of skews of minus side, composition amounts to the triangular wave carrier 21 for PWM figure of 6 grades, generate pwm pulse figure by the comparison of carrying out it and voltage reference sine wave 31, the break-make of the switch element of the formation single-phase inverter to constituent parts inverter is controlled.In this 3 grades of skews corresponding to the quantity that is connected in series of inverter group.In the situation that being connected in parallel pattern, owing to becoming parallel circuits, therefore, preferably, the switch figure of the switch figure of for example unit's of making inverter 5U1,5U2,5U3 and the inverter 5U4 of unit, 5U5,5U6 is formed as phase diagram shape.Therefore, in the situation that being connected in parallel pattern, PWM figure is switched to the state of Fig. 4 from the state of Fig. 3, make to send concurrently the gating signal of 2 groups of identical figures.
Embodiment 2
Fig. 5 is the circuit structure diagram of the power-converting device that relates to of embodiments of the invention 2.To the each several part of the present embodiment 2, part the prosign identical each several part of the power-converting device relating to the embodiments of the invention 1 of Fig. 1 is illustrated, and the description thereof will be omitted.The present embodiment 2 is with the difference of embodiment 1, the number of each belonging to of input transformer 2A secondary winding group's secondary winding changed to 2 from 3, and the number of units of the unit inverter of each phase is changed to 4 from 6 thereupon.
The action of the present embodiment 2 is all identical with the action in embodiment 1 situation.In embodiment 1, being connected in series in pattern output and being added the phase voltage of 6 unit inverter 6 gained, in the pattern of being connected in parallel, become the output voltage of its half, but in the present embodiment 2, being connected in series in pattern output and being added the phase voltage of 4 unit inverter gained, in the pattern of being connected in parallel, become the output voltage of its half.
The example that has reduced the quantity of the unit inverter of each phase with respect to embodiment 1 has been described in the present embodiment 2, otherwise but increase the unit inverter of each phase quantity structure also obviously set up.Thereby, by suitably selecting the quantity of the unit inverter of each phase, just can obtain the power-converting device of for example 6kV/3kV output or the power-converting device of 4kV/2kV output.
Embodiment 3
Fig. 6 is the circuit structure diagram of the major part of the power-converting device that relates to of embodiments of the invention 3.Major part described herein is U phase power converter portion, and the diagram of other parts is omitted.To the each several part of the present embodiment 3, the identical part prosign of each several part of the U phase power converter portion of the power-converting device relating to the embodiments of the invention 1 of Fig. 1 illustrates, and the description thereof will be omitted.The present embodiment 3 is with the difference of embodiment 1: the inverter 5U7 of the unit of appending, 5U8 and 5U9 in the U phase power converter 3UB of portion are the structure of 9 from the structure modify of 6 unit inverters; Become the structure of the 3 groups of unit inverters that can be connected in parallel by appending shutter 11U, 12U, 13U; And should ground interphase reactor 10U be changed to 3 interphase reactor 10UA, 10UB, 10UC in contrast.
In the present embodiment 3, with regard to U phase, connecting shutter 6U, 7U and 11U, and disconnecting in the situation of other shutters, become the power-converting device that former output has added up to the voltage of the output voltage gained of 9 unit inverters.Although omitted diagram, V phase, W (be connected in series to pattern) mutually too.
On the other hand, disconnect shutter 6U, 7U and 11U, and connect in the situation of shutter 8U, 9U, 12U, 13U, become the state that the synthetic output of the inverter group of the synthetic output of inverter group of synthetic output, the inverter 5U4 of unit, 5U5, the 5U6 of the inverter group of the inverter 5U1 of unit, 5U2,5U3 and the inverter 5U7 of unit, 5U8,5U9 is connected in parallel via interphase reactor 10UA, 10UB and 10UC respectively at U in mutually, give the U phase voltage of alternating current motor 4.Although the diagram of omission, to V phase, W phase (pattern is connected in parallel) too.
In the pattern that is connected in parallel of the present embodiment 3, can obtain with respect to being connected in series pattern, rated output voltage is 1/3rd, output-current rating is the power-converting device of three times.
Have, in the situation that being connected in parallel pattern, in the time that current imbalance does not form problem, the situation that can omit interphase reactor is same with the situation of embodiment 1 again.
Several embodiments of the present invention have more than been described, but these embodiment propose as an example, are not intended to limit invention scope.These new embodiment can implement in other various modes, can in the scope that does not depart from inventive concept, carry out various omissions, displacement and change.These embodiment or its distortion are included in invention scope or purport, and are also contained in the invention recorded in claim scope and impartial scope thereof.
For example, illustrated in embodiment 1 unit inverter be the situation of 18 and in embodiment 2 unit inverter be the situation of 12, but be more than or equal to 2 integer and the quantity of unit inverter is any 3K as long as K is made as.In the time of K=1, the series connection quantity of inverter group is 1.Have, the unit inverter quantity of the power converter portion of each phase is odd number in this wise when as K=3, and the number of units of the unit inverter of an inverter group under the pattern of being connected in parallel is made as to 1/2nd of (K-1) platform again.And the number of units that other are connected in series to the unit inverter of body is made as than its number of units of many 1.Have again, in this case, with respect to being connected in series pattern, the rated voltage of the pattern that is connected in parallel be during as K=3 be 1/3rd, be 2/5ths to be less than or equal in this wise 1/2nd when K=5, this point should be noted that.
In addition, the in the situation that of embodiment 3, the unit inverter quantity of the power converter portion of each phase is if not be more than or equal to 3 and be just false, and therefore K is more than or equal to 3.The multiple that this situation can not be 3 in the unit inverter quantity of the power converter portion of each phase yet, obtain the current-carrying capacity of 3 times by the number of units of suitably selecting the unit inverter of the inverter group under pattern that is connected in parallel, but voltage becomes and is less than or equal to 1/3rd, therefore should be noted that.
If the quantity K of the unit inverter of inverter group is made as and is more than or equal to 4, also can be made as the pattern that is connected in parallel being more connected in parallel that is connected in parallel than three of embodiment 3.In this situation, as long as switch to the pattern of being connected in parallel, that is, be that K unit inverter is divided into multiple groups within the possible range, the output of the unit inverter in this group is connected in series, and the pattern that is connected in parallel that the output-parallel of these multiple inverter groups is connected.
In addition, if the shutter of each interphase reactor short circuit that makes interphase reactor 10UA, 10UB and 10UC is set in embodiment 3, just can have or not by the switching of shutter the switching of interphase reactor.
In addition, if for example connect shutter 8U, shutter 11U and shutter 7U in embodiment 3, and disconnect other shutters, can obtain that current-carrying capacity can not become but rated voltage is 2/3rds with respect to being connected in series pattern power-converting device.
For the suitable application area of the power-converting device of embodiment, carry out the explanation of testing equipment of alternating current motor etc. and so on, but be not limited to this.Even if be applicable in the situation in the drive unit of alternating current motor of general industry equipment, there is can change while variation the power-converting device of rated output voltage at ambient conditions such as scrap builds, also can give full play to its function flexibly.
The explanation of Reference numeral
1 AC power
2,2A input transformer
2U1,2U2,2V1,2V2,2W1,2W2,2AU1,2AU2,2AV1,2AV2,2AW1,2AW2 secondary winding group
3U, 3UA, 3UB U phase power converter portion
3V, 3VA V phase power converter portion
3W, 3WA W phase power converter portion
4 alternating current motors
5,5U1,5U2,5U3,5U4,5U5,5U6,5U7,5U8,5U9,5V1,5V2,5V3,5V4,5V5,5V6,5W1,5W2,5W3,5W4,5W5,5W6 unit's inverter
6U, 6V, 6W shutter
7U, 7V, 7W shutter
8U, 8V, 8W shutter
9U, 9V, 9W shutter
10U, 10V, 10W, 10UA, 10UB, 10UC interphase reactor
11U, 11V, 11W shutter
12U, 12V, 12W shutter
13U, 13V, 13W shutter
20,21 PWM figure triangular waves
30,31 voltage reference sine waves
51 diode rectifier circuits
52 direct current smmothing capacitors
53 single-phase inverter circuit
Claims (8)
1. a power-converting device, is characterized in that, comprising:
Input transformer connects AC power on armature winding, and has 3K secondary winding, and K is more than or equal to 2 integer, and
3 use K the power converter portion that unit inverter is exported respectively a phasor of the phase voltage of three-phase, and described unit inverter is connected one to one with described secondary winding, the single phase alternating current (A.C.) voltage of output expected frequency,
Described in each, power converter portion is configured to and can switches to the pattern of being connected in series and the pattern that is connected in parallel,
The described pattern that is connected in series is the pattern that the output of described K unit inverter is connected in series,
The described pattern of being connected in parallel is that described K unit inverter is divided into multiple groups, the output of the unit inverter in this group is connected in series, and the pattern that the output-parallel of these multiple inverter groups is connected.
2. power-converting device according to claim 1, is characterized in that,
The described pattern of being connected in parallel is the operation mode that the output of inverter group that the output of roughly half quantity that has been connected in series described K unit inverter is formed is connected in parallel with each other.
3. power-converting device according to claim 1, is characterized in that,
K is more than or equal to 3 integer,
The described pattern of being connected in parallel is the operation mode that the output of inverter group that the roughly output of 1/3rd quantity that has been connected in series described K unit inverter is formed is connected in parallel with each other.
4. power-converting device according to claim 1, is characterized in that,
Be connected in parallel in pattern described, be provided with interphase reactor at each outlet side of described inverter group.
5. power-converting device according to claim 1, is characterized in that,
Be connected in parallel in pattern described, switch gating figure, so that each gating figure of described inverter group is formed as identical.
6. power-converting device according to claim 4, is characterized in that,
Be connected in parallel in pattern described, make the triangular wave carrier that becomes benchmark in positive side and minus side skew, and the quantity of skew is the series connection quantity of the unit inverter of described inverter group, by the PWM figure of 2 times of quantity of this series connection quantity is compared and generates pwm pulse figure with triangular wave carrier and voltage reference sine wave, the switch element of described unit inverter is carried out to break-make control.
7. power-converting device according to claim 1, is characterized in that,
The group that the secondary winding quantity of formation of described input transformer is identical with the series connection quantity of the unit inverter of described inverter group, makes the phase deviation between secondary winding according to its each group, to reduce the high order harmonic component of input side.
8. power-converting device according to claim 1, is characterized in that,
Described power-converting device is the supply unit for testing alternating current motor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011253581A JP2013110843A (en) | 2011-11-21 | 2011-11-21 | Power converter |
| JP2011-253581 | 2011-11-21 | ||
| PCT/JP2012/079199 WO2013077206A1 (en) | 2011-11-21 | 2012-11-12 | Power conversion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103947098A true CN103947098A (en) | 2014-07-23 |
| CN103947098B CN103947098B (en) | 2016-11-16 |
Family
ID=48469654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280057152.4A Active CN103947098B (en) | 2011-11-21 | 2012-11-12 | Power-converting device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013110843A (en) |
| CN (1) | CN103947098B (en) |
| WO (1) | WO2013077206A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448593A (en) * | 2019-08-27 | 2021-03-05 | 中车株洲电力机车研究所有限公司 | Traction converter system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6093683B2 (en) * | 2013-10-15 | 2017-03-08 | 東芝三菱電機産業システム株式会社 | AC motor drive device |
| KR101849001B1 (en) | 2016-08-18 | 2018-04-16 | 한국철도기술연구원 | Transducer for high voltage and current |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05146161A (en) * | 1991-11-19 | 1993-06-11 | Hitachi Ltd | Pwm converter |
| CN1138242A (en) * | 1995-04-27 | 1996-12-18 | 三菱电机株式会社 | Voltage source type electric power variable flow device |
| CN1214567A (en) * | 1997-10-09 | 1999-04-21 | 株式会社东芝 | Multiple inverter system |
| CN1400731A (en) * | 2001-08-07 | 2003-03-05 | 任少康 | Waveform generation method and power converter device |
| JP2003304688A (en) * | 2002-04-10 | 2003-10-24 | Fujitsu Access Ltd | Direct-current power supply unit |
| US20040233590A1 (en) * | 2003-05-20 | 2004-11-25 | Masanori Nakagawa | Inverter power supply device |
| CN101355321A (en) * | 2007-05-23 | 2009-01-28 | 株式会社日立制作所 | Multiple power conversion apparatus and multiple transformer |
| CN101459385A (en) * | 2007-12-12 | 2009-06-17 | 张东胜 | Hybrid type current transformer device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047825B2 (en) * | 1978-12-22 | 1985-10-23 | 株式会社日立製作所 | Coil excitation power supply |
| JP2000243636A (en) * | 1999-02-24 | 2000-09-08 | Toshiba Corp | Transformer for three-phase multilevel inverter |
| US8093764B2 (en) * | 2007-09-13 | 2012-01-10 | Siemens Industry, Inc. | Method and system for bypassing a power cell of a power supply |
| KR20090100655A (en) * | 2008-03-20 | 2009-09-24 | 엘에스산전 주식회사 | Multi level inverter |
-
2011
- 2011-11-21 JP JP2011253581A patent/JP2013110843A/en active Pending
-
2012
- 2012-11-12 WO PCT/JP2012/079199 patent/WO2013077206A1/en active Application Filing
- 2012-11-12 CN CN201280057152.4A patent/CN103947098B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05146161A (en) * | 1991-11-19 | 1993-06-11 | Hitachi Ltd | Pwm converter |
| CN1138242A (en) * | 1995-04-27 | 1996-12-18 | 三菱电机株式会社 | Voltage source type electric power variable flow device |
| CN1214567A (en) * | 1997-10-09 | 1999-04-21 | 株式会社东芝 | Multiple inverter system |
| CN1400731A (en) * | 2001-08-07 | 2003-03-05 | 任少康 | Waveform generation method and power converter device |
| JP2003304688A (en) * | 2002-04-10 | 2003-10-24 | Fujitsu Access Ltd | Direct-current power supply unit |
| US20040233590A1 (en) * | 2003-05-20 | 2004-11-25 | Masanori Nakagawa | Inverter power supply device |
| CN101355321A (en) * | 2007-05-23 | 2009-01-28 | 株式会社日立制作所 | Multiple power conversion apparatus and multiple transformer |
| CN101459385A (en) * | 2007-12-12 | 2009-06-17 | 张东胜 | Hybrid type current transformer device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448593A (en) * | 2019-08-27 | 2021-03-05 | 中车株洲电力机车研究所有限公司 | Traction converter system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013077206A1 (en) | 2013-05-30 |
| CN103947098B (en) | 2016-11-16 |
| JP2013110843A (en) | 2013-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Corzine et al. | Control of cascaded multilevel inverters | |
| Korn et al. | Direct modular multi-level converter for gearless low-speed drives | |
| Khomfoi et al. | Multilevel power converters | |
| CA2565707C (en) | Low harmonics, polyphase converter circuit | |
| JP5417641B2 (en) | Power converter | |
| JP4512117B2 (en) | Multiple power conversion device and multiple transformer | |
| US20150349687A1 (en) | Electric Power Generation and Distribution for Islanded or Weakly-Connected Systems | |
| JP4793096B2 (en) | High voltage AC direct power converter | |
| WO2014004065A1 (en) | Scalable-voltage current-link power electronic system for multi-phase ac or dc loads | |
| JP2014108000A (en) | Power conversion device | |
| EP2779403B1 (en) | Power conversion system and method | |
| Szcześniak et al. | Power electronics converters without DC energy storage in the future electrical power network | |
| KR20130039612A (en) | Regenerative medium voltage inverter | |
| CN107240915B (en) | Shore electric power system | |
| CA2696215C (en) | Medium voltage inverter system | |
| CN104253569A (en) | Generator excitation apparatus and power conversion system | |
| CN103947098A (en) | Power conversion device | |
| JPH02202324A (en) | High tension power device | |
| US4698739A (en) | 12-Pulse motor drive | |
| JP2011130578A (en) | Dc power supply unit | |
| CN110401333A (en) | Inhibit PWM method, system and the associated component of bus current ripple | |
| JP2000253675A (en) | 3-phase self-exciting power converter and 3-phase self- exciting dc interlocking apparatus | |
| Wang et al. | A new concept of multilevel converter motor drive with modular design and split winding machine | |
| US20130258729A1 (en) | Medium voltage power apparatus | |
| Motwani et al. | A comparative evaluation between hybrid modular multi-level converters and alternate arm converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |