CN103947098B - Power-converting device - Google Patents
Power-converting device Download PDFInfo
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- CN103947098B CN103947098B CN201280057152.4A CN201280057152A CN103947098B CN 103947098 B CN103947098 B CN 103947098B CN 201280057152 A CN201280057152 A CN 201280057152A CN 103947098 B CN103947098 B CN 103947098B
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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
- 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
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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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
An a kind of power-converting device is provided to export the power-converting device of different electric pressures with just reducing rated capacity.This power-converting device includes: input tranformer (2) and the power converter portion (3) of 3 phase voltages using K unit inverter (5) to export three-phase respectively, described input tranformer (2) connects alternating current power supply (1) on armature winding, and there is 3K (K is greater than the integer equal to 2) individual secondary windings, described unit inverter (5) is connected one to one with described secondary windings, the single-phase AC voltage of output expected frequency.Power converter portion (3) is configured to switch to series connected mode and be connected in parallel pattern, described series connected mode is the pattern output of K unit inverter (2) being 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.
Description
Quoting of related application
The application based on and require the Japanese patent application the 2011-253581st in filing date on November 21st, 2011
The interests of priority, entire contents is comprised in herein by quoting.
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 one of power-converting device exporting many phase alternating current, it is known to the great Rong of power-converting device
Quantify and for the purpose of Towards Higher Voltage, and in order to improve output waveform, and by being connected even in the output side of single-phase inverter
Connect each phase of composition to realize the power-converting device of multiplex.
There has been proposed as various experiment power supplies and other are for towards the power-converting device of general industry etc.,
The device achieving multiplex by the output side of single-phase inverter is connected in series each phase of composition can stably operate
Scheme (referring for example to patent documentation 1).
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2001-268999 publication
Summary of the invention
Invent problem to be solved
Power-converting device shown in patent documentation 1 is used in the electric source for test purposes that higher hamonic wave is few, such as, via
The electric source for test purposes of the fan of polyphase AC motor, pump, compressor etc..At this moment, there is the alternating current that electric pressure is different
In the case of motivation, it is required for each electric pressure and prepares power-converting device, there is the cost increase of testing equipment, setting
Place guarantee difficulty etc. problem.If it addition, thinking that the output voltage control simply utilizing transducer etc. is to obtain variable voltage, then
Owing to current-carrying capacity is certain, therefore have when outputing low-voltage, the problem that the capacity of power-converting device reduces.
The present invention completes to solve problem as above, its object is to provide a kind of electric power to become
Changing device exports the power-converting device of different electric pressures with just reducing rated capacity.
Means for solving the above
In order to achieve the above object, the power-converting device of the present invention is characterised by, makes including input tranformer and 3
Export the power converter portion of the phase voltage of three-phase respectively with K unit inverter, described input tranformer connects on armature winding
Connect alternating current power supply, and there is 3K (K is greater than the integer equal to 2) individual secondary windings, described unit inverter and described secondary around
Group connects one to one, the single-phase AC voltage of output expected frequency, and described power converter portion is configured to switch to series connection even
Connecing pattern and be connected in parallel pattern, described series connected mode is the mould output of described K unit inverter being connected in series
Formula, described in the pattern of being connected in parallel be that described K unit inverter is divided into multiple groups, by the output of the unit inverter in this group
It is connected in series, and the pattern that the output-parallel of these multiple inverter groups is connected.
Invention effect
In accordance with the invention it is possible to provide one to export difference with just reducing rated capacity with a power-converting device
The power-converting device of electric pressure.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the power-converting device that embodiments of the invention 1 relate to.
Fig. 2 is the circuit structure diagram of the unit inverter 5 in Fig. 1.
Fig. 3 be power-converting device each mutually in there is the figure of PWM figure of 6 single-phase unit inverters.
Fig. 4 be power-converting device each mutually in there is the figure of PWM figure of 3 single-phase unit inverters.
Fig. 5 is the circuit structure diagram of the power-converting device that embodiments of the invention 2 relate to.
Fig. 6 is the circuit structure diagram of the major part of the power-converting device that embodiments of the invention 3 relate to.
Detailed description of the invention
Hereinafter, referring to the drawings, embodiments of the invention are illustrated.
Embodiment 1
Hereinafter, referring to figs. 1 through Fig. 3, the power-converting device relating to embodiments of the invention 1 illustrates.
Fig. 1 is the circuit structure diagram of the power-converting device that embodiments of the invention 1 relate to.From alternating current power supply 1 to input
Transformator 2 supplies the three-phase alternating voltage of high pressure.Input tranformer 2 has the secondary of the secondary windings possessing multiple insulation respectively
Around group 2U1,2U2,2V1,2V2,2W1,2W2, supply alternating current from secondary windings group 2U1,2U2 to U phase power converter 3U,
Alternating current is supplied to V phase power converter 3V from secondary windings group 2V1,2V2, and electric to W phase from secondary windings group 2W1,2W2
Force transducer 3W supplies alternating current.U phase power converter 3U, V phase power converter 3V, W phase power converter 3W exports respectively
Mutually differ the single-phase alternating voltage of 120o phase place with desired frequency, its one end is connected with each other as neutral point, separately
One end is connected with each terminal of ac motor 4 respectively.That is, electric by U phase power converter 3U, V phase power converter 3V and W phase
Force transducer 3W constitutes the power converter of three-phase.Hereinafter, the internal structure of U phase power converter 3U is illustrated.Further,
The internal structure of V phase power converter 3V and W phase power converter 3W is substantially same structure with U phase power converter 3U, because of
This omits their explanation.
U phase power converter 3U has unit inverter 5U1～5U6.Fig. 2 is identical with these unit inverter structures
The circuit structure diagram of unit inverter 5.Utilize diode rectifier circuit 51 and direct current smoothing capacity device 52, will be from input transformation
The convert alternating current of the secondary windings of device 2 is unidirectional current, and is transformed to have optional frequency, electricity by single-phase inverter circuit 53
The single-phase alternating current of pressure.Single-phase inverter circuit 53 is will to be respectively provided with 2 positive side brachium pontis of switch element and 2 minus side brachium pontis
Bridge and constitute.
From each secondary windings of secondary windings group 2U1 to each unit inverter of unit inverter 5U1,5U2,5U3
Feed, is connected in series as illustrated in fig. 1 by their single-phase output.Similarly, from each secondary windings of secondary windings group 2U2
To each unit Inverter Fed of unit inverter 5U4,5U5,5U6, by their the single-phase output company of series connection as shown in figure
Connect.One end of one end of the output of unit inverter 5U1 and the output of unit inverter 5V1,5W1 of other phases be connected with each other and
Form neutral point.One end of one end of the output of unit inverter 5U3 and the output of unit inverter 5U4 is via shutter 6U phase
Connect.Further, one end of the output of unit inverter 5U6, via shutter 7U, is connected with the U phase terminal of ac motor 4.
One end of one end (neutral point) of the output of unit inverter 5U1 and the output of unit inverter 5U4 is via opening and closing
Device 8U is connected.Further, one end of the output of unit inverter 5U3 is inverse with unit via shutter 9U and paralleing reactor 10U
The one end of the output becoming device 5U6 is connected, and the midpoint of paralleing reactor 10U is connected with the U phase terminal of ac motor 4.Under
In the face of action illustrates.By unit inverter 5U1～5U6,5V1～5V6, each whole serial phases of output of 5W1～5W6
In the case of Lian, shutter 6U, 6V, 6W is made to connect with 7U, 7V, 7W the most in FIG so that it is in the case of his shutter disconnects,
Become the power-converting device of voltage that former output has added up to the output voltage gained of 6 unit inverters.By this connection
It is referred to as series connected mode.
On the other hand, make shutter 6U, 6V, 6W and 7U, 7V, 7W disconnect, making shutter 8U, 8V, 8W and 9U, 9V, 9W
In the case of connection, such as, in U phase, it is connected in series the synthesis output of the inverter group of unit inverter 5U1,5U2,5U3
Synthesis with the inverter group being connected in series unit inverter 5U4,5U5,5U6 is output into via paralleing reactor 10U also
The state that connection connects, gives the U phase voltage of ac motor 4.To V phase, W phase too.It is referred to as being connected in parallel by this connection
Pattern.In this is connected in parallel pattern, relative to aforesaid series connected mode, it is possible to obtain rated output voltage be half,
Output-current rating power-converting device at double.
In the case of the pattern of being connected in parallel, at U phase power converter portion 3U, V phase power converter portion 3V and W phase power converter
Each inverter group in portion 3W output side be respectively arranged to suppress current imbalance paralleing reactor 10U, 10V and
10W.But it is also possible in the case of current imbalance not composition problem, omit these paralleing reactors 10U, 10V and 10W.
It addition, in FIG, the primary side of input tranformer 2 is divided in such as U phase secondary windings group 2U1 and secondary
Around group 2U2, using 3 windings as a group, and it is made mutually to have phase shift so that at series connected mode and being connected in parallel
The polyphase rectifier circuit all under pattern with same phase shift is set up.But not necessarily have to so do, it is also possible to freely select input
The phase shift of the secondary windings of transformator 2.
One example of the PWM figure under series connected mode shown in Fig. 3.As it can be seen, in this example embodiment, benchmark is become
Triangular wave carrier in positive side and minus side 6 grades skew, composition amounts to the PWM figure triangular wave carrier 20 of 12 grades, by by it
Compare with voltage reference sine wave 30 and generate pwm pulse figure, constituent parts inverter is constituted single-phase inverter
The break-make of switch element is controlled.In the case of the pattern of being connected in parallel, the triangular wave becoming benchmark as illustrated in fig. 4 carries
Ripple is in positive side and minus side 3 grades skew, and composition amounts to the PWM figure triangular wave carrier 21 of 6 grades, by carrying out it and voltage reference
The comparison of sinusoidal wave 31 and generate pwm pulse figure, constituent parts inverter is constituted the leading to of switch element of single-phase inverter
Break and be controlled.3 grades of skews in this are connected in series quantity corresponding to inverter group.In the case of the pattern of being connected in parallel,
Owing to becoming parallel circuit, it is preferred, therefore, that such as make the switch figure of unit inverter 5U1,5U2,5U3 and unit inverse
The switch figure becoming device 5U4,5U5,5U6 is formed as phase diagram shape.Therefore, in the case of the pattern of being connected in parallel, by PWM figure from
The state of Fig. 3 switches to the state of Fig. 4 so that send the gating signal of 2 groups of identical figures concurrently.
Embodiment 2
Fig. 5 is the circuit structure diagram of the power-converting device that embodiments of the invention 2 relate to.Each portion to the present embodiment 2
Point, the part same symbol identical with each several part of the power-converting device that the embodiments of the invention 1 of Fig. 1 relate to is shown
Go out, and the description thereof will be omitted.The present embodiment 2 difference from embodiment 1 is, input tranformer 2A is belonged to each secondary windings
The number of the secondary windings of group is changed to 2 from 3, and therewith from 6, the number of units of the unit inverter of each phase is changed to 4
Platform.
Action in the case of the action of the present embodiment 2 and embodiment 1 is the most identical.In embodiment 1, it is being connected in series mould
In formula, output has been added the phase voltage of 6 unit inverter 6 gained, becomes the output electricity of its half in the pattern of being connected in parallel
Pressure, but in the present embodiment 2, in series connected mode, output has been added the phase voltage of 4 unit inverter gained, in parallel connection
Connection mode becomes the output voltage of its half.
In the present embodiment 2, illustrate to decrease the example of the quantity of the unit inverter of each phase relative to embodiment 1, but
Otherwise the structure increasing the quantity of the unit inverter of each phase is the most substantially set up.Thus, by suitably selecting the unit of each phase
The quantity of inverter, it becomes possible to obtain the power-converting device of such as 6kV/3kV output or the power converter dress of 4kV/2kV output
Put.
Embodiment 3
Fig. 6 is the circuit structure diagram of the major part of the power-converting device that embodiments of the invention 3 relate to.Said
Major part be U phase power converter portion, the diagram of other parts is omitted.Each several part to the present embodiment 3, with this of Fig. 1
The part same symbol that each several part in the U phase power converter portion of the power-converting device that bright embodiment 1 relates to is identical illustrates,
And the description thereof will be omitted.The present embodiment 3 difference from embodiment 1 is: add unit in U phase power converter portion 3UB inverse
Become device 5U7,5U8 and 5U9, be changed to the structure of 9 from the structure of 6 unit inverters；By additional shutter 11U, 12U,
13U and become the structure that can be connected in parallel 3 groups of unit inverters；And paralleing reactor 10U is changed to 3 with corresponding
Platform paralleing reactor 10UA, 10UB, 10UC.
In the present embodiment 3, for U phase, connecting shutter 6U, 7U and 11U, and disconnecting the situation of other shutters
Under, become the power-converting device of voltage that former output has added up to the output voltage gained of 9 unit inverters.Although saving
Omit diagram, but to V phase, W phase (series connected mode) too.
On the other hand, disconnect shutter 6U, 7U and 11U, and in the case of connecting shutter 8U, 9U, 12U, 13U, at U
Xiang Zhongcheng is the synthesis output of the inverter group of unit inverter 5U1,5U2,5U3, the inversion of unit inverter 5U4,5U5,5U6
The synthesis output of the synthesis output of device group and the inverter group of unit inverter 5U7,5U8,5U9 is respectively via balance reactance
The state that device 10UA, 10UB and 10UC are connected in parallel, gives the U phase voltage of ac motor 4.Although the diagram of omission, but to V
Phase, W phase (are connected in parallel pattern) too.
Can obtain relative to series connected mode being connected in parallel in pattern of the present embodiment 3, rated output voltage is
1/3rd, output-current rating is the power-converting device of three times.
Further, in the case of the pattern of being connected in parallel, when current imbalance does not constitutes problem, it is convenient to omit balance reactance
The situation of device is as the situation of embodiment 1.
It is explained above several embodiments of the present invention, but these embodiments propose as an example, are not
Want to limit invention scope.These new embodiments can be implemented in other various modes, can be main without departing from invention
Carry out various omission in the range of purport, replace and change.These embodiments or its deformation are included in invention scope or master
In purport, and it is also contained in the scope of the invention described in right and equalization thereof.
Such as, have been described that unit inverter in embodiment 1 is situation and the unit inversion in example 2 of 18
Device is the situation of 12, but as long as be K is set to the integer more than or equal to 2 and the quantity of unit inverter be any 3K i.e.
Can.When K=1, the serial number of inverter group is 1.Further, when as K=3 the unit in power converter portion of the most each phase
In the case of inverter quantity is odd number, the number of units of the unit inverter of an inverter group under the pattern of being connected in parallel is set to
(K-1) 1/2nd of platform.Further, the number of units of the unit inverter of other series connections is set to than its number of units of many 1
?.Further, in this case, relative to series connected mode, being connected in parallel the rated voltage of pattern is as being three during K=3
/ mono-, being 2/5ths in this wise less than or equal to 1/2nd during K=5, this point should be noted that.
It addition, in the case of example 3, the unit inverter quantity in the power converter portion of each phase is if not being more than or equal to
Just being false for 3, therefore K needs to be greater than equal to 3.This situation can also be at the unit inverter number in the power converter portion of each phase
In the case of amount is not the multiple of 3, by the platform of the suitably unit inverter of the selected inverter group being connected in parallel under pattern
Number obtains the current-carrying capacity of 3 times, but voltage becomes smaller than equal to 1/3rd, it is therefore desirable to note.
If being set to more than or equal to 4, then can also be set to than embodiment 3 by quantity K of the unit inverter of inverter group
Three be connected in parallel more be connected in parallel be connected in parallel pattern.In the case of Gai, as long as switching to the pattern of being connected in parallel,
That is, it is that K unit inverter is divided into multiple groups within the possible range, the output of the unit inverter in this group is connected even
Connect, and be connected in parallel pattern by what the output-parallel of these multiple inverter groups connected.
If it addition, arranging each paralleing reactor short circuit making paralleing reactor 10UA, 10UB and 10UC in embodiment 3
Shutter, it becomes possible to carry out the switching with or without paralleing reactor by the switching of shutter.
If additionally, the most such as connect shutter 8U, shutter 11U and shutter 7U, and disconnecting other opening and closings
Device, then can obtain current-carrying capacity and will not become but rated voltage is 2/3rds relative to series connected mode power converter
Device.
For the suitable application area of the power-converting device of embodiment, testing equipment having been carried out ac motor etc. etc
Explanation, but be not limited to this.Even if in the case of be applicable to the driving means of the ac motor of general industry equipment,
The power-converting device of rated output voltage can be changed, it is also possible to give full play to when the ambient conditions such as scrap build there occurs change
Its function flexibly.
The explanation of reference
1 alternating current power supply
2,2A input tranformer
2U1,2U2,2V1,2V2,2W1,2W2,2AU1,2AU2,2AV1,2AV2,2AW1,2AW2 secondary windings group
3U, 3UA, 3UB U phase power converter portion
3V, 3VA V phase power converter portion
3W, 3WA W phase power converter portion
4 ac motors
5、5U1、5U2、5U3、5U4、5U5、5U6、5U7、5U8、5U9、5V1、5V2、5V3、5V4、5V5、5V6、5W1、
5W2,5W3,5W4,5W5,5W6 unit inverter
6U, 6V, 6W shutter
7U, 7V, 7W shutter
8U, 8V, 8W shutter
9U, 9V, 9W shutter
10U, 10V, 10W, 10UA, 10UB, 10UC paralleing reactor
11U, 11V, 11W shutter
12U, 12V, 12W shutter
13U, 13V, 13W shutter
20,21 PWM figure triangular wave
30,31 voltage references are sinusoidal wave
51 diode rectifier circuits
52 direct current smoothing capacity devices
53 single-phase inverter circuit
Claims (7)
1. a power-converting device, it is characterised in that including:
Input tranformer, connects alternating current power supply on armature winding, and has 3K secondary windings, and it is whole that K is greater than equal to 2
Number, and
The power converter portion of one phasor of 3 phase voltages using K unit inverter to export three-phase respectively, described unit is inverse
Become device to be connected one to one with described secondary windings, the single-phase AC voltage of output expected frequency,
Each described power converter portion is configured to switch to series connected mode and be connected in parallel pattern,
Described series connected mode is the pattern output of described K unit inverter being connected in series,
The described pattern of being connected in parallel is that described K unit inverter is divided into multiple groups, defeated by the unit inverter in this group
Go out to be connected in series, and the pattern that the output-parallel of these multiple inverter groups is connected,
In described series connected mode, the triangular wave carrier becoming benchmark offsets in positive side and minus side K level, by amounting to
The PWM figure triangular wave carrier of 2K level and voltage reference sine wave compare and generate the first pwm pulse figure,
Being connected in parallel in pattern described, the triangular wave carrier becoming benchmark offsets in positive side and minus side, and the quantity of skew
It is the serial number of the unit inverter of described inverter group, by by the PWM figure triangle of the 2 of this serial number times of quantity
Wave carrier signal and voltage reference sine wave compare and generate the second pwm pulse figure,
Based on described first pwm pulse figure or the second pwm pulse figure, the switch element of described unit inverter is carried out
Break-make controls.
Power-converting device the most according to claim 1, it is characterised in that
The described pattern of being connected in parallel is the output of the substantially half quantity by being connected in series described K unit inverter
The operation mode that the output of inverter group is connected in parallel with each other.
Power-converting device the most according to claim 1, it is characterised in that
K is greater than the integer equal to 3,
The described pattern of being connected in parallel be 1/3 quantity by being connected in series described K unit inverter output and
The operation mode that the output of the inverter group become is connected in parallel with each other.
Power-converting device the most according to claim 1, it is characterised in that
Being connected in parallel in pattern described, each outlet side in described inverter group is provided with paralleing reactor.
Power-converting device the most according to claim 1, it is characterised in that
Being connected in parallel in pattern described, switching gating figure, so that each gating figure of described inverter group is formed as identical.
Power-converting device the most according to claim 1, it is characterised in that
The secondary windings quantity of formation of described input tranformer is identical with the serial number of the unit inverter of described inverter group
Group, make the phase offset between secondary windings according to each of which group, to reduce the higher hamonic wave of input side.
Power-converting device the most according to claim 1, it is characterised in that
Described power-converting device is the supply unit for testing ac 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 CN103947098A (en) | 2014-07-23 |
| CN103947098B true CN103947098B (en) | 2016-11-16 |
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| 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) |
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| 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 |
| 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 |
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- 2012-11-12 CN CN201280057152.4A patent/CN103947098B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103947098A (en) | 2014-07-23 |
| WO2013077206A1 (en) | 2013-05-30 |
| JP2013110843A (en) | 2013-06-06 |
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