CN105321656A - Electric reactor and power conversion device using the same - Google Patents
Electric reactor and power conversion device using the same Download PDFInfo
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- CN105321656A CN105321656A CN201510266510.8A CN201510266510A CN105321656A CN 105321656 A CN105321656 A CN 105321656A CN 201510266510 A CN201510266510 A CN 201510266510A CN 105321656 A CN105321656 A CN 105321656A
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- iron core
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Abstract
The invention provides an electric reactor and a power conversion device using the same, wherein the electric reactor enables the inductance of all phases to be equivalent. The electric reactor (100) comprises a magnetic body iron core part (6) and leads (14,15,16) which are wound on the magnetic iron core; the magnetic body iron core (6) comprises three annular parts which constitute three phases of a closed magnetic circuit, and the three annular parts are centrally provided with window parts (7,8,9); the three annular parts of the three phases are integrated through the connection part and are configured in opposition to the connection part in various direction through extending; the lead is wound on the annular part through the window part; and the electric reactor is connected between the three phase AC output which is supplied by the three phase AC motor (5) to the three phase AC inverter device (1) and the three phase AC terminal of the three-phase AC motor to reduce the noise generated by the power conversion device.
Description
Technical field
The present invention relates to reduce the reactor that noise etc. inserts in power line and the power inverter using it.
Background technology
When driving alternating current motor with the power inverter such as DC-to-AC converter, pulse voltage alternating current motor exported because of power inverter and produce noise.In order to reduce noise, in the power line of the output power to alternating current motor supply power inverter, insert reactor.
As the technology relevant to such reactor, the technology recorded in known patent document 1 and patent documentation 2.In the magnetic material core of the inductor of this technology, make the annulus plane earth configuration three-phase at central portion with window.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2009-135271 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2011-119477 publication
Summary of the invention
The problem that invention will solve
But, in the reactor of above-mentioned prior art, because make the annulus plane earth configuration three-phase at central portion with window, so when the annulus of each phase is formed respectively for preventing magnetically saturated magnetic gap, the magnetic circuit formed at the annulus of the pars intermedia being arranged in magnetic material core is subject to the impact of the magnetic gap formed respectively at the annulus being positioned at its both sides.Therefore, the inductance of each phase produces uneven.
So, the invention provides a kind of reactor and its power inverter of use that can make the inductance equalization of each phase.
For solving the technical scheme of problem
In order to solve above-mentioned problem, reactor of the present invention comprises magnetic material core portion and is wound in the wire in magnetic material core portion, magnetic material core portion comprises three annulus of AC three-phase that each comfortable central portion has window portion, that form closed magnetic circuit, three annulus of three-phase configure in mode that is integrated by bound fraction and that extend in a different direction relative to bound fraction separately, and each annulus carrys out coiled electrical conductor through window portion.
In addition, power inverter of the present invention comprise to three-phase alternating-current motor supply three-phase ac power DC-to-AC converter and be connected to DC-to-AC converter three-phase alternating current export with the three-phase alternating current terminal of three-phase alternating-current motor between reactor, reactor uses the reactor of the invention described above.
Invention effect
According to the present invention, by being set to the annulus of magnetic circuit in the magnetic material core of integration mutually by each interchange, the inductance of each phase in reactor can be easily made to become impartial.In addition, the reactor of the application of the invention, can reduce the noise that power inverter produces effectively.
Problem other than the above, structure and effect, understood by the explanation of following execution mode.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the elevator power inverter of one embodiment of the present of invention.
Fig. 2 is the front elevation of the iron core of the reactor representing the present embodiment.
Fig. 3 is the plane graph of the iron core of the reactor representing the present embodiment.
Fig. 4 is the plane graph of the reactor of the present embodiment.
Fig. 5 is the stereogram of the reactor of the present embodiment.
Fig. 6 represents magnetic circuit when to be provided with magnetic gap on iron core.
Fig. 7 represents the iron core of the reactor of a variation.
Fig. 8 represents the iron core of the reactor of other variation.
Embodiment
Below, based on accompanying drawing, embodiments of the invention are described.
[embodiment 1]
Fig. 1 is the circuit diagram of the major part of the elevator power inverter representing the reactor comprising one embodiment of the present of invention.
In the figure, DC-to-AC converter 1, by making the semiconductor power switch element switch such as IGBT (InsulatedGateBipolarTransistor: igbt) and commercial three-phase alternating voltage being carried out to rectification and the direct voltage that smoothly obtains is converted to alternating voltage, exports this alternating voltage from three-phase alternating current lead-out terminal U, V, W.The alternating voltage that DC-to-AC converter 1 exports is applied three-phase alternating-current motor 5 by not shown power line.
Reactor 100 is inserted in the power line and earth connection of three-phase.That is, the alternating voltage that DC-to-AC converter 1 exports applies via reactor 100 pairs of three-phase alternating-current motors 5.Reactor 100 possesses U phase terminal U1 with U2, V phase terminal V1 with V2, W phase terminal W1 and W2, earth connection terminal E1 and E2.Terminal U1, V1, W1 are electrically connected with lead-out terminal U, V, W of DC-to-AC converter 1 respectively.In addition, terminal U2, V2, W2 is electrically connected with the U phase terminal of three-phase alternating-current motor 5, V phase terminal, W phase terminal respectively.And then terminal E1, E2 are electrically connected with the earthing potential portion E of DC-to-AC converter 1, the earthing potential portion of three-phase alternating-current motor 5 respectively.
In reactor 100, as described later, form the reactor of three-phase by the magnetic material core (being only designated as below " iron core ") of one, but in FIG, conveniently, be denoted as different circuit element by function.Norm reactor function 2 is that normal mode noise reduces function, is the function of U phase conductor 14, V phase conductor 15, W phase conductor 16 realization.Common mode reactor function 3 is that common-mode noise reduces function, is the function that the iron core 6 of U phase conductor 14, V phase conductor 15, W phase conductor and three-phase realizes.In addition, the function 4 of earth connection reactor reduces the function of the noise produced in earth connection, is earthy wire 17, the function that realizes of the bound fraction 13 of the iron core 6 of three-phase.This bound fraction 13 is the total parts in the iron core portion of each phase.Thus, the iron core 6 of the one used in the reactor of three-phase is formed.
Three-phase alternating-current motor 5 rotary actuation by the alternating electromotive force come from the power inverter supply possessing DC-to-AC converter 1 and reactor 100.The revolving force of three-phase alternating-current motor 5 is passed to the rope sheave 50 of elevator hoist, and rope sheave 50 is rotated.Rope sheave 50 and angle pulley 51 are wound with main hoist cable 52.Lift car 53 and counterweight 54 are suspended in midair by main hoist cable 52 in not shown lift path.Because rope sheave 50 rotates, when main hoist cable 52 is by driving, in not shown lift path, lift car 53 is elevated.Wherein, about three-phase alternating-current motor 5, such as, permanent-magnet synchronous electric motor is applied.
The structure of reactor is below described.
Fig. 2 and Fig. 3 is front elevation and the plane graph of the iron core of the reactor representing the present embodiment respectively.
As shown in Figure 2, iron core 6 is included in central portion and possesses window portion 7,8,9 respectively and three annulus 10,11,12 forming the three-phase of closed magnetic circuit.Each annulus 10,11,12 as shown in Figure 3, above iron core 6 (below) see and roughly arrange to T-shaped.That is, annulus 10,12 configures along the imaginary line AA ' in Fig. 3, annulus 11 along by the middle portion of annulus 10,12 and the imaginary line BB ' orthogonal with imaginary line AA ' configure.That is, the longitudinal direction cross section on imaginary line AA ' i.e. the first imaginary plane configures two annulus 10,12, second imaginary plane orthogonal with the first imaginary plane configures another annulus 11 being longitudinal direction cross section on imaginary line BB '.The side close to each other of annulus 10,11,12 is combined integratedly by bound fraction 13, thus forms the iron core 6 of the one used in the reactor of three-phase.
Wherein, annulus 10,11,12 and bound fraction are made up of the laminated body of silicon steel plate, amorphous magnetic strip, entirety (bulk) magnetic material.
Three annulus 10,11,12 of three-phase are roughly the same shape and roughly the same size, and annulus 10,12 makes its width w
10, w
12direction as one man configure, annulus 11 makes its thickness t
11direction and the width w of annulus 10,12
10, w
12direction as one man configure.
Iron core 6 has width (w
10, w
11, w
12) direction from bound fraction 13 respectively to different directions extend the annulus 10,11,12 that configures, therefore each window portion 7,8,9 is adjacent near the bound fraction 13 of each annulus 10,11,12.That is, each while combined by bound fraction 13 of 3 rectangle frame bodies of each annulus 10,11,12 is formed.
Fig. 4 and Fig. 5 is plane graph and the stereogram of the reactor of the present embodiment respectively.Reactor 100 Fig. 2, the iron core 6 shown in 3 are formed.Thus the iron core 6 shown in Fig. 4 is equivalent to the iron core 6 shown in Fig. 3.
Reactor 100 has iron core 6, the wire of the three-phase that the annulus of iron core 6 reels and U phase conductor 14, V phase conductor 15, W phase conductor 16, and the earthy wire reeled at the bound fraction of iron core 6 and earth connection 17.
As shown in Figure 4,5, U phase conductor 14 reels through window portion 7 at annulus 10.Terminal U1, U2 of U phase conductor 14 are connected (with reference to figure 1) with the U phase terminal of the U phase output terminals of DC-to-AC converter 1, the winding of three-phase alternating-current motor 5 respectively.V phase conductor 15 reels through window portion 8 at annulus 11.Terminal V1, V2 of V phase conductor 15 are connected (with reference to figure 1) with the V phase terminal of the V phase output terminals of DC-to-AC converter 1, the winding of three-phase alternating-current motor 5 respectively.W phase conductor 16 reels through window portion 9 at annulus 11.Terminal W1, W2 of W phase conductor 16 are connected (with reference to figure 1) with the W phase terminal of the W phase output terminals of DC-to-AC converter 1, the winding of three-phase alternating-current motor 5 respectively.
In the present embodiment, each wire 14,15,16 is wound on the part relative with bound fraction 13 in each annulus 10,11,12.Wherein, the performance of each number of turn of wire 14,15,16 and the reactor of requirement correspondingly suitably sets.
As shown in Figure 5, earth connection 17, at the bound fraction 13 of each annulus 10,11,12, reels through each window portion 7,8,9 of all of its neighbor.Terminal E1, E2 of earth connection 17 are connected (with reference to figure 1) with the earthing potential portion of DC-to-AC converter 1, the earthing potential portion of three-phase alternating-current motor 5 respectively.
Reactor 100, by winding, the winding of V phase conductor 15, the winding of W phase conductor 16 of above-mentioned U phase conductor 14, has the norm reactor function 2 shown in Fig. 1.In addition, reactor 100, by these windings with by the magnetic-coupled annulus 10,11,12 of bound fraction 13, has the common mode reactor function 3 shown in Fig. 1.And then reactor 100 passes through winding and the bound fraction 13 of earth connection 17, has the function 4 of the earth connection reactor shown in Fig. 1.
As mentioned above, in the reactor 100 of the present embodiment, by being set to the annulus of magnetic circuit in the iron core of integration mutually by each interchange, the inductance of each phase can be easily made to become impartial.
Fig. 6 represents the magnetic circuit of each phase when the annulus of the iron core of above-described embodiment is provided with magnetic gap.Wherein, in Fig. 6, for ease of comparing each magnetic circuit, make the transversely arranged expression of the front elevation of each annulus, and wire only depicts a circle.Wherein, to "×" and " " expression sense of current of wire note.In addition, dotted line represents magnetic circuit, the arrow of dotted line note is represented to the direction of magnetic flux.
The annulus 10,11,12 of the iron core 6 shown in Fig. 6, in order to prevent the magnetic saturation of iron core, is respectively arranged with magnetic gap g1, g2, g3 that magnetic gap length is roughly equal.At annulus 10, in the part outside the part that removing is adjacent with bound fraction 13, Fig. 6, magnetic gap g1 is set in the part relative with bound fraction 13, forms magnetic circuit 18 as shown in phantom in FIG..At annulus 11, in the part outside the part that removing is adjacent with bound fraction 13, Fig. 6, magnetic gap g2 is set in the part relative with bound fraction 13, forms magnetic circuit 19 as shown in phantom in FIG..At annulus 12, in the part outside the part that removing is adjacent with bound fraction 13, Fig. 6, magnetic gap g3 is set in the part relative with bound fraction 13, forms magnetic circuit 20 as shown in phantom in FIG..
Like this, the magnetic gap arranged in each magnetic circuit 18,19,20 is respectively one, does not exist at the adjacent magnetic gap shared mutually.In addition, the magnetic gap length of magnetic gap g1, g2, g3 is equal.Thus, the inductance of each phase can not produce inequality and become impartial.
And then, by the reactor of the embodiment shown in Fig. 2 ~ 6 is used for power inverter, the noise that power inverter and the electric motor drive system that is made up of power inverter and three-phase alternating-current motor produce effectively can be reduced.In addition, because can shielding device be reduced, so power inverter and electric motor drive system miniaturization can be made.Thus, in the power inverter and electric motor drive system of the elevator shown in Fig. 1, its installation space can be reduced, therefore, it is possible to make elevator save space.
Fig. 7 represents the iron core of the reactor of the variation of above-described embodiment.The iron core 6 of this variation be included in central portion same with the embodiment shown in Fig. 3 possesses window portion 7,8,9 and three annulus 10,11,12 forming the three-phase of closed magnetic circuit respectively.In addition, the iron core 6 of this variation is different from the embodiment shown in Fig. 3, each annulus 10,11,12 as shown in Figure 7, above iron core 6 (below) see and roughly arrange to Y shape.That is, annulus 10,11,12 above iron core 6 (below) see time, extend radially from bound fraction 13.The direction that adjacent loop extends is in the angle of roughly 120 degree, and three annulus 10,11,12 of three-phase symmetrically configure.In addition, although the diagram of omission, other structures such as wire and winding thereof are identical with the embodiment of Fig. 3.
Fig. 8 represents the iron core of the reactor of other variation of above-described embodiment.The iron core 6 of this variation be included in central portion same with the embodiment shown in Fig. 3 possesses window portion 7,8,9 and three annulus 10,11,12 forming the three-phase of closed magnetic circuit respectively.In addition, the iron core 6 of this variation is different from the embodiment shown in Fig. 3, is also included in central portion and possesses window portion 21 and the annulus 22 forming the earth connection of closed magnetic circuit.At this annulus 22, the wire of earth connection reels through window portion 21.And, each annulus 10,11,12,22 as shown in Figure 8, above iron core 6 (below) see and roughly configure crosswise.In addition, although the diagram of omission, other structures such as the wire of three-phase and winding thereof are identical with the embodiment of Fig. 3.
According to these variation, the inductance of each phase can be made equally easily to become impartial.And then, by the reactor of these variation is used for power inverter, effectively can reduce the noise of power inverter and electric motor drive system generation, and power inverter and electric motor drive system miniaturization can be made.And then, in the power inverter and electric motor drive system of elevator, its installation space can be reduced, therefore, it is possible to make elevator save space.
In addition, the present invention is not limited to above-described embodiment and variation, comprises other various variation.Such as, above-described embodiment describes in detail for ease of the present invention being described with understanding, and is not limited to all structures that must possess explanation.In addition, for a part for the structure of embodiment and variation, can add, delete, replace other structures.
Such as, at the annulus of iron core, the position of coiled electrical conductor also can suitably be changed with the position arranging magnetic gap.
Description of reference numerals
1 ... DC-to-AC converter
5 ... three-phase alternating-current motor
6 ... iron core
7,8,9 ... window portion
10,11,12 ... annulus
13 ... bound fraction
14 ... U phase conductor
15 ... V phase conductor
16 ... W phase conductor
18,19,20 ... magnetic circuit
21 ... window portion
22 ... annulus
50 ... rope sheave
51 ... angle pulley
52 ... main hoist cable
53 ... lift car
54 ... counterweight
100 ... reactor.
Claims (10)
1. comprise magnetic material core portion and be wound in the reactor of wire in described iron core portion, it is characterized in that:
Described magnetic material core portion comprises three annulus of AC three-phase that each comfortable central portion has window portion, that form closed magnetic circuit,
Three annulus of described three-phase configure in mode that is integrated by bound fraction and that extend in a different direction relative to described bound fraction separately,
Described each annulus to reel described wire through described window portion.
2. reactor as claimed in claim 1, is characterized in that:
On described bound fraction, three annulus described window portion separately through described three-phase reels the wire of earth connection.
3. reactor as claimed in claim 1 or 2, is characterized in that:
In described closed magnetic circuit, there is magnetic gap.
4. reactor as claimed in claim 3, is characterized in that:
Described magnetic gap portion is arranged on the position relative with described bound fraction in three annulus of described three-phase.
5. the reactor according to any one of Claims 1 to 4, is characterized in that:
Above described magnetic material core portion, three annulus roughly T-shaped ground configuration of described three-phase.
6. the reactor according to any one of Claims 1 to 4, is characterized in that:
Above described magnetic material core portion, three annulus roughly Y shape ground configuration of described three-phase.
7. reactor as claimed in claim 1, is characterized in that:
Described magnetic material core portion also comprises the earth connection annulus for the earthy wire that reels.
8. reactor as claimed in claim 7, is characterized in that:
Above described magnetic material core portion, three annulus and the described earth connection annulus of described three-phase roughly configure crosswise.
9. a power inverter, it comprise to three-phase alternating-current motor supply three-phase ac power DC-to-AC converter and be connected to described DC-to-AC converter three-phase alternating current export with the three-phase alternating current terminal of described three-phase alternating-current motor between reactor, the feature of described power inverter is:
Described reactor is the reactor according to any one of claim 1 ~ 8.
10. power inverter as claimed in claim 9, is characterized in that:
Described three-phase alternating-current motor drives elevator hoist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-129822 | 2014-06-25 | ||
| JP2014129822A JP6228515B2 (en) | 2014-06-25 | 2014-06-25 | Reactor and power conversion device using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105321656A true CN105321656A (en) | 2016-02-10 |
Family
ID=55227137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510266510.8A Pending CN105321656A (en) | 2014-06-25 | 2015-05-22 | Electric reactor and power conversion device using the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6228515B2 (en) |
| CN (1) | CN105321656A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109243762A (en) * | 2018-09-29 | 2019-01-18 | 中冶京诚工程技术有限公司 | Magnet ring anti-interference method and device |
| CN113990625A (en) * | 2021-11-03 | 2022-01-28 | 浙江飞旋科技有限公司 | High-frequency large-capacity power electronic unit parallel device and carrier multiplexing method |
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| EP1914868A1 (en) * | 2006-10-20 | 2008-04-23 | Vacon Oyj | Filtering choke arrangement for a frequency converter |
| CN102009881A (en) * | 2009-09-08 | 2011-04-13 | 株式会社安川电机 | Elevator control device and control method thereof |
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| CN113990625A (en) * | 2021-11-03 | 2022-01-28 | 浙江飞旋科技有限公司 | High-frequency large-capacity power electronic unit parallel device and carrier multiplexing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016009769A (en) | 2016-01-18 |
| JP6228515B2 (en) | 2017-11-08 |
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