CN106531424B - Water-cooled air reactor, power conversion device and wind generating set - Google Patents
Water-cooled air reactor, power conversion device and wind generating set Download PDFInfo
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- CN106531424B CN106531424B CN201611260834.1A CN201611260834A CN106531424B CN 106531424 B CN106531424 B CN 106531424B CN 201611260834 A CN201611260834 A CN 201611260834A CN 106531424 B CN106531424 B CN 106531424B
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- 238000006243 chemical reaction Methods 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 claims abstract description 222
- 238000004804 winding Methods 0.000 claims description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 95
- 239000007788 liquid Substances 0.000 claims description 13
- 239000002826 coolant Substances 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 239000004065 semiconductor Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 230000005611 electricity Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000001052 transient effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 241000276425 Xiphophorus maculatus Species 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
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Abstract
The invention provides a water-cooled air-core reactor, a power conversion device and a wind generating set. This water-cooled air-core reactor includes: the reactor comprises a reactor unit and a water-cooling heat dissipation unit, wherein the reactor unit comprises mutually independent multiphase reactors, and each phase reactor in the multiphase reactors comprises a plurality of reactor coils; the water-cooling heat dissipation unit comprises a plurality of cooling pipes which are arranged corresponding to the multiphase reactors and are arranged in a spaced mode, so that a plurality of reactor coils of each phase reactor can be respectively spirally wound on the outer walls of the plurality of cooling pipes in the axial direction, and the plurality of cooling pipes cool the reactor coils wound on the cooling pipes. The heat dissipation efficiency of a plurality of coils in the reactor can be improved, and the overall occupied space of the water-cooled air-core reactor is reduced.
Description
Technical field
The present invention relates to power electronics field more particularly to a kind of water-cooled hollow reactor, power-converting devices
And wind power generating set.
Background technology
With the development of power electronic technique, the power density of power electronic equipment, power grade are all being continuously improved, and are
Meet the performance requirement of high power electronic equipment, then must use the method for power electronic devices multiplex parallel connection (i.e.：Mould
Block parallel connection+power electronic devices is in parallel), to build the power module with more high current density, to improve power electronics dress
The power grade set.
But in the circuit of more devices parallel connection, it is uneven to be susceptible to semiconductor devices circulation, devices in parallel output current
The problem of weighing apparatus.The presence of the unbalanced electric current of parallel semiconductor device will generate semiconductor devices prodigious over-current shock, add
The damage rate of fast device, and the performance of current transformer can be reduced, power electronic equipment will eventually be hindered to higher power grade
Development.Currently, more commonly used inhibition semiconductor devices circulation, the method for solving the problems, such as current-unbalance are：It is equal by increasing
Stream reactor limits current-rising-rate to inhibit the transient state circulation of semiconductor devices by its induction reactance, to play balanced electricity
The effect of stream.Thus in the case where parallel element is more, it will usually realize dynamic using an appropriate number of equalizing reactor
It flows, by its inhibiting effect to transient unbalanced current fluctuation, makes to keep flowing between parallel branch.
The equalizing reactor of mainstream is broadly divided into two kinds at present：A kind of equalizing reactor is the coil structure by being wound on iron core
At (iron core equalizing reactor), and another equalizing reactor be made of the coil being wound on insulated support it is (hollow to flow
Reactor).Because structure and technique limit, applies at present and be all made of air-cooled mode in inside modules and radiate, so in the presence of
The problems such as reactor loss is big, volume is big, heat dissipation performance is poor, to realizing the power module unit of high current, high power density
Exploitation, there is larger limitation.Meanwhile in order to ensure the stream effect to semiconductor devices, the power electronics dress of multiple parallel
It sets that required equalizing reactor quantity is more, increases the complexity of processing and the assembling of product.
Invention content
According to an embodiment of the invention, a kind of water-cooled hollow reactor, power-converting device and wind-power electricity generation are provided
Unit can realize the radiating efficiency for improving multiple coils in reactor unit, and it is whole to reduce water-cooled hollow reactor
At least one of occupied space purpose.
According to an aspect of the invention, there is provided a kind of water-cooled hollow reactor includes：Reactor unit and water cooling
Heat-sink unit, wherein reactor unit includes mutually independent multiphase reactor, and every phase reactor in multiphase reactor includes
Multiple reactor windings；Multiple exchanges of the phase reactor are respectively constituted per the input terminal of multiple reactor windings of phase reactor
Input terminal；The ac output end of the phase reactor is constituted per the output end short circuit of multiple reactor windings of phase reactor；Water cooling
Heat-sink unit includes more cooling tubes of corresponding multiphase reactor setting, and more cooling tubes are arranged with being separated, so that per phase
Multiple reactor windings of reactor axial screw can be wound in the outer walls of more cooling tubes respectively, and more cooling tubes are to winding
It is cooled down in its reactor winding.
According to an aspect of the present invention, the number for the reactor winding that every phase reactor in reactor unit includes with
The number of phases of multiphase reactor matches；Also, the number of phases of the number of more cooling tubes also with multiphase reactor matches.
According to an aspect of the present invention, reactor unit includes two-phase reactor or three-phase reactor, corresponding, every phase
Reactor includes two reactor windings or three reactor windings；It is corresponding, water-cooling unit include two cooling tubes or
Three cooling tubes.
According to an aspect of the present invention, reactor unit is three-phase reactor, corresponding, includes three per phase reactor
Reactor winding.
According to an aspect of the present invention, the input terminal of three reactor windings per phase reactor is respectively from water-cooling
The same side of unit is stretched out；The output end of three reactor windings per phase reactor is respectively from the same side of water-cooling unit
It stretches out.
According to an aspect of the present invention, water-cooling unit includes three cooling tubes, and every cooling tube axially divides along it
It Chan Rao not be there are three reactor winding.
According to an aspect of the present invention, every cooling tube is three-phase along three reactor windings that it axially winds respectively
A reactor winding in each phase reactor in reactor.
According to an aspect of the present invention, the diameter of every cooling tube and length are according to being wound in the multiple of every cooling tube
The winding inductance quantity and coil turn of reactor winding are calculated.
According to an aspect of the present invention, the calculation formula of the ratio of the diameter and length of every cooling tube is：
Wherein：I is the winding inductance quantity of the multiple reactor windings wound on every cooling tube, and D is that every cooling tube is straight
Diameter, N are the coil turn of the multiple reactor windings wound on every cooling tube, and L is the length of every cooling tube.
According to an aspect of the present invention, every cooling tube is the tube body with hollow structure, the shape of the cross section of tube body
Shape is round, rectangle or triangle.
According to an aspect of the present invention, water-cooling unit includes inlet and outlet, and more cooling tubes are respective
Axial both ends are connected to the water inlet of water-cooling unit and water outlet respectively so that coolant liquid body can by water inlet and
Water outlet flows separately through more cooling tubes.
According to an aspect of the present invention, water-cooling unit further includes the first water collector and the second water collector, the first collection
Hydrophone is communicated between water inlet and more cooling tubes；Second water collector is communicated between water outlet and more cooling tubes.
According to an aspect of the present invention, the company of welding between the first water collector and/or the second water collector and more cooling tubes
It connects.
According to an aspect of the present invention, the axial both ends of water-cooling unit carry out grounding respectively.
According to an aspect of the present invention, water-cooled hollow reactor further includes being separately positioned on water-cooling unit axial direction
The fixing bracket at both ends, and fixing bracket is grounded respectively.
According to another aspect of the present invention, a kind of power-converting device is additionally provided, power-converting device includes：Each other
Polyphase power module in parallel, polyphase power mould is in the block to have multiple ac output ends per phase power module；With above-mentioned water
Cold type air reactor, wherein the input terminal of multiple reactor windings in every phase reactor of multiphase reactor and multiphase work(
Rate mould multiple ac output ends in the block per phase power module connect correspondingly respectively.
According to a further aspect of the invention, a kind of wind power generating set is additionally provided, wind power generating set includes above-mentioned
Power-converting device.
To sum up, the water-cooled hollow reactor of the embodiment of the present invention is by being arranged reactor unit and water-cooling unit,
More cooling tubes are arranged in multiphase reactor in corresponding reactor unit in water-cooling unit, and will be every in multiphase reactor
Multiple reactor windings in phase reactor accordingly along the outer wall that the axial direction of cooling tube is wound in more cooling tubes, make reactance
Multiphase reactor in device unit can be integrated on a set of water-cooling unit, and to every phase electricity by way of water-cooling
Multiple coils in anti-device are cooled down.Compared to existing reactor, the water-cooled hollow reactor of the embodiment of the present invention radiates
Effect is good, and compact-sized, occupies little space.
Description of the drawings
From below in conjunction with the accompanying drawings to the present invention specific implementation mode description in the present invention may be better understood,
In：
By reading referring to the drawings to being described in detail made by non-limiting embodiment, other feature of the invention,
Objects and advantages will become more apparent upon, wherein same or analogous reference numeral indicates same or analogous feature.
Fig. 1 is the axis geodesic structure schematic diagram of water-cooled hollow reactor according to the ... of the embodiment of the present invention；
Fig. 2 is the main structure diagram of the water-cooled hollow reactor in Fig. 1；
Fig. 3 is an exemplary electronic schematic diagram of concrete application of the water-cooled hollow reactor in Fig. 1；
Fig. 4 is the backsight structural representation of the water-cooled hollow reactor in Fig. 1；
Fig. 5 is the overlooking structure diagram of the water-cooled hollow reactor of Fig. 2.
Wherein：
10- reactor units；11- the first phase reactors；111- reactor windings；112- outlet side connecting terminals；113-
Input side connecting terminal；12- the second phase reactors；121- reactor windings；122- outlet side connecting terminals；123- input sides connect
Line terminals；13- third phase reactors；131- reactor windings；132- outlet side connecting terminals；133- input side connecting terminals；
20- water-cooling units；21- cooling tubes；The first water collectors of 22-；220- water inlets；The second water collectors of 23-；230- water outlets；
24- fixing brackets；The first inversion units of 31-；The second inversion units of 32-；33- third inversion units.
Specific implementation mode
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, it is proposed that many details, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case of some details in not needing these details.Below to implementing
The description of example is just for the sake of by showing that the example of the present invention is better understood from the present invention to provide.In attached drawing and following
Description in, at least part of known features and technology are not shown, unnecessary fuzzy to avoid causing the present invention；
Also, for clarity, may be exaggerated the size of part-structure.Identical reference numeral indicates same or similar knot in figure
Structure, thus their detailed description will be omitted.In addition, feature described below, structure or characteristic can be with any suitable
Mode be incorporated in one or more embodiments.
The noun of locality of middle appearance described below is direction shown in figure, is not the water-cooled hollow electricity to the present invention
The concrete structure of anti-device is defined.In the description of the present invention, it is also necessary to explanation, unless otherwise specific regulation and limit
Fixed, term " installation ", " connected ", " connection " shall be understood in a broad sense, and can also be detachably to connect for example, it may be being fixedly connected
It connects, or is integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected.For the ordinary skill in the art, visual concrete condition understands above-mentioned term in the present invention
Concrete meaning.
Water-cooled hollow reactor provided in an embodiment of the present invention can be applied in electric device or system, be connected to
The output end or input terminal of the power module of multiple parallel connections are come by its inhibiting effect to transient unbalanced current fluctuation
Inhibit the transient state circulation of the semiconductor devices in power module, and current-rising-rate is limited by its induction reactance, can play
Weigh the effect of each parallel branch electric current, to realize dynamic current equalizing, makes the effect that current balance is kept between each parallel branch.And by
In being provided with water-cooling unit in air reactor, therefore the water-cooled hollow reactor of the embodiment of the present invention can be to reality
The reactor of existing current balance function is cooled down well.
For a better understanding of the present invention, with reference to the water-cooled hollow reactors according to the ... of the embodiment of the present invention of Fig. 1 to 5
It is described in detail.
Fig. 1 is the axis geodesic structure schematic diagram of water-cooled hollow reactor according to the ... of the embodiment of the present invention.As shown in Figure 1, root
According to one embodiment of the present of invention, water-cooled hollow reactor includes reactor unit 10 and water-cooling unit 20, wherein electricity
Anti- device unit 10 includes mutually independent multiphase reactor, and every phase reactor in multiphase reactor includes multiple reactor lines
Circle.Water-cooling unit 20 includes more cooling tubes 21 of corresponding multiphase reactor setting, and more cooling tubes 21 are separated cloth
It sets, so as to which cooling tube 21 can be wound in along more 21 axial screws of cooling tube respectively per multiple reactor windings of phase reactor
Outer wall, every cooling tube 21 cools down the reactor winding for being wound in the cooling tube 21.
The water-cooled hollow reactor of the embodiment of the present invention passes through the multiphase reactor in corresponding reactor unit 10 as a result,
More cooling tubes 21 are set in water-cooling unit 20, and more cooling tubes 21 are arranged with being separated, with can will be more
Multiple reactor windings of every phase reactor in phase reactor are accordingly wound to along the axial screw of more cooling tubes 21 cold
But the outer wall of pipe 21, by the cooling liquid that is flowed through in more cooling tubes 21 and the reactor winding for being wound in 21 outer wall of cooling tube into
Row indirect heat exchange contacts, and to take away the heat of reactor winding generation, is cooled down to reactor winding.
Due to being cooled down by the way of water cooling to reactor winding in the embodiment of the present invention, compared to existing air-cooled
Reactor good heat dissipation effect, and the larger device of radiating requirements need not be directed to, large volume of air cooling equipment is separately provided,
So the water-cooled hollow reactor that the present invention implements power can save occupied space.Also, it is dissipated by an integrated water cooling
Hot cell 20 cools down whole reactor unit 10, further saves the occupied space of water-cooled hollow reactor,
So as to optimize the size for the electric device for applying water-cooled hollow reactor, while the water-cooled hollow of the embodiment of the present invention
The structure of reactor is simple, easy to process.
Reactor unit 10 includes multiphase reactor in above-described embodiment, and all includes multiple reactor lines per phase reactor
Circle, also, the number of phases phase of the number and multiphase reactor for the reactor winding for including per phase reactor in reactor unit 10
Match.Correspondingly, the number of the cooling tube 21 in water-cooling unit 20 also needs to match with the number of phases of multiphase reactor,
Between specific corresponding to mode ask specific example as described below.
Please also refer to Fig. 2 and Fig. 3, wherein Fig. 2 is the main structure diagram of the water-cooled hollow reactor in Fig. 1；
Fig. 3 is an exemplary electronic schematic diagram of concrete application of the water-cooled hollow reactor in Fig. 1.First, according to water cooling
The application principle of the reactor unit 10 of formula air reactor illustrates the composition of reactor unit 10.
As shown in Figures 2 and 3, wherein according to an embodiment of the present invention, reactor unit 10, which has been shown in particular, has three
Phase reactor, respectively：First phase reactor 11, the second phase reactor 12 and third phase reactor 13.It is shown in Fig. 3 go out water
In one concrete application example of cold type air reactor, water-cooled hollow reactor is applied to tool, and there are three power in parallel
In the electric device of module.First phase reactor 11, the second phase reactor 12 and third phase reactor 13 respectively include three electricity
Anti- device coil, wherein three reactor windings 111 of the first phase reactor 11 are three U phase coils；Second phase reactor 12
Three reactor windings 121 are three V phase coils；Three reactor windings 131 of third phase reactor 13 are three W phase lines
Circle.
Illustratively, above-mentioned electric device is inverter comprising the first inversion unit 31, second being connected in parallel to each other is inverse
Become unit 32 and third inversion unit 33, wherein each inversion unit is by six IGBT (Insulated Gate Bipolar
Transistor, insulated gate bipolar transistor) composition IGBT parallel connection bridge-type output circuit, three inversion units form three
Phase bridge-type output circuit.The ac output end of bridge arm in parallel in first inversion unit 31 respectively with the first phase reactor 11 three
The input terminal of a U phase coils connects；And then short circuit constitutes final three-phase to the output end of three U phase coils of the first phase reactor 11
The A phase output terminals of exchange.The ac output end of bridge arm in parallel in second inversion unit 32 respectively with the second phase reactor 12
The input terminal connection of three V phase coils；And then short circuit constitutes final three to the output end of three V phase coils of the second phase reactor 12
The mutually B phase output terminals of exchange.The ac output end of bridge arm in parallel in third inversion unit 33 respectively with third phase reactor 13
Three W phase coils input terminal connection；Then short circuit constitutes final three to the output end of three W phase coils of third phase reactor 13
The mutually C phase output terminals of exchange.
The direct current on common DC bus is converted to three intersections by the power module of multiple parallel connections in inverter as a result,
Galvanic electricity, and be filtered by reactor unit 10 and export three-phase alternating current after stream process.Therefore, this hair
The water-cooled hollow reactor of bright embodiment can effectively be inhibited because of parallel algorithm, electricity by reactor unit 10 therein
The transient state circulation between semiconductor devices caused by power electronic device characteristics are inconsistent, and significantly reduce the multiple of parallel connection
The nonuniform fluid of power module, improves and flows effect, and the electric current of each parallel branch output in power module is made to keep in balance.And
And since the inductance value of water-cooled hollow reactor is smaller, the volume of the electric power equipment using it is reduced, cost is reduced.
As shown in Fig. 2, corresponding above-mentioned reactor unit 10, water-cooling unit 20 includes three cold cooling tubes 21, often
Equidirectional spiral winding has an electricity of the out of phase reactor in three-phase reactor to root cooling tube 21 successively respectively in axial direction
Anti- device coil.Specifically, as shown in Fig. 2, in the present embodiment, water-cooling unit 20 includes three cooling tubes 21, and every cold
But pipe 21 is the tube body with hollow structure, whole cylinder structure.Three cooling tubes 21 each other along longitudinally side by side
Arrangement, and three cooling tubes 21 are independent of one another, so that two adjacent cooling tubes 21 form certain gap each other.
Water-cooling unit 20 includes total water inlet 220 and total water outlet 230, two end faces of every cooling tube 21 axially
On be respectively arranged with inlet and outlet.Respective water inlet and water outlet are accordingly connected to by three cooling tubes 21 respectively
To water inlet 220 and water outlet 230, with external storage cool down liquid liquid storage container (such as：Condenser) connection, cooling
But liquid is flowed separately through in three cooling tubes 21 via water inlet 220 and water outlet 230 and is exchanged heat.The embodiment of the present invention is to cold
But the concrete type of liquid is not limited, and can be the coolant liquid for realizing water cooling form.
In one alternate embodiment, water-cooling unit 20 further includes the first water collector 22 and the second water collector 23, and
One water collector 22 is respectively with an axial side end for water inlet 220 and more cooling tubes 21 (under direction of observation shown in Fig. 2
End) it is connected；Second water collector 23 is respectively with the axial end side of water outlet 230 and more cooling tubes 21 (shown in Fig. 2
The upper end of direction of observation) it is connected.Specifically, in the present embodiment, the first water collector 22 is identical with 23 structure of the second water collector,
It is hollow pipe structure.In direction of observation shown in Fig. 2, the first water collector 22 is located under water-cooling unit 20
End, one end of the first water collector 22 are the water inlet 220 of water-cooling unit 20, and the other end of the first water collector 22 is respectively with three
The water inlet of root cooling tube 21 is connected.The coolant liquid body in external liquid storage container can be via water-cooling unit 20 as a result,
It flows into three cooling tubes 21.In direction of observation shown in Fig. 2, the second water collector 23 is located at the upper of water-cooling unit 20
End, one end of the second water collector 23 are the water outlet 230 of water-cooling unit 20, and the other end of the second water collector 23 is respectively with three
The water outlet of root cooling tube 21 is connected.Flowing through the coolant liquid body in three cooling tubes 21 as a result, can return via water outlet 230
Into external liquid storage container, circulating cooling is carried out.In an alternative embodiment, it the first water collector 22 and/or second catchments
It uses and is welded to connect between device 23 and more cooling tubes 21.Preferably, the first water collector 22 and the second water collector 23 and more it is cold
But it is all made of and is welded to connect between pipe 21, so that integrated structure is integrally formed in water-cooled hollow reactor.
By the way that the first water collector 22 and the second water collector 23 are arranged in water-cooling unit 20, can make cooling liquid from
Water inlet 220 is flowed at the first water collector 22 of lower end and is further dispersed in every cooling tube 21, each cooling
Pipe 21 is all independent one, can individually carry out cooling effect.And the cooling liquid flowed through from three cooling tubes 21,
It is flowed out by water outlet 230 after finally converging at the second water collector 23 positioned at upper end.And every cooling tube 21 will be respective
Inlet and outlet tandem to the first water collector 22 and the second water collector 23, so that junction is all concentrated in together, to collect
Middle maintenance.Also, cooling tube 21 and the first water collector 22 and the second water collector 23 are attached respectively by welding
Mode, ensure that the sealing of pipeline and compression strength in water-cooling unit 20, avoid in connection procedure occur it is multiple
Interface and the problem of be easy to cause leakage, to the security reliability of lifting system.
According to one embodiment of present invention, as shown in Fig. 2, the first phase reactor 11, the second phase reactor 12 and third
13 respective three reactor windings of phase reactor are abreast helically wound around the outer wall of three cooling tubes 21 respectively so that are scheming
Direction of observation shown in 2, sequentially the first phase of spiral winding is electric successively from top to bottom in an axial direction on first cooling tube 21 from right to left
One W phase line of one U phase coil of anti-device 11, a V phase coil of the second phase reactor 12 and third phase reactor 13
Circle.And sequentially one of the first phase of spiral winding reactor 11 successively from top to bottom in an axial direction on second cooling tube 21 from right to left
One W phase coil of U phase coils, a V phase coil of the second phase reactor 12 and third phase reactor 13.Similarly, from right to left
On third root cooling tube 21 in an axial direction from top to bottom successively sequentially a U phase coil of the first phase of spiral winding reactor 11,
One V phase coil of the second phase reactor 12 and a W phase coil of third phase reactor 13.
In addition, the input terminal of three reactor windings of every phase reactor in three-phase reactor is respectively from water-cooling list
The ac input end for constituting the phase reactor is stretched out in the same side of member 20；And the output of three reactor windings per phase reactor
The ac output end that simultaneously short circuit constitutes the phase reactor is stretched out in end from the same side of water-cooling unit 20 respectively.Specifically, such as
Direction of observation shown in Fig. 2, three reactor windings, 111 respective one end of the first phase reactor 11 is respectively from water-cooling list
The left side of member 20 is stretched out, and three input side connecting terminals 113 is constituted, so that three U phase coils of reactor winding 111 can divide
It is not connect with the output end of the first inversion unit 31 by three input side connecting terminals 113；And the three of the first phase reactor 11
The 111 respective other end of a reactor winding is stretched out from the right side of water-cooling unit 20 respectively, constitutes three outlet side wiring
Terminal 112 so that three U phase coils of reactor winding 111 can respectively by three 112 short circuits of outlet side connecting terminal,
And constitute the ac output end (that is, A phase output terminals of three-phase alternating current) of the first phase reactor 11.
Similarly, three reactor windings 121 of the second phase reactor 12 stretch out in the left side of water-cooling unit 20, respectively
Three input side connecting terminals 123 are constituted, so that three V phase coils of reactor winding 121 mutually can be defeated by three respectively
Enter side terminal 123 to connect with the output end of the second inversion unit 32；Three reactor windings 121 stretch out in water-cooling list
The right side of member 20, respectively constitutes three outlet side connecting terminals 122, so that three V phase coils of reactor winding 121 can divide
Not by three 122 short circuits of outlet side connecting terminal, the ac output end of the second phase reactor 12 is constituted (that is, the B of three-phase alternating current
Phase output terminal).Three reactor windings 131 of third phase reactor 13 stretch out in the left side of water-cooling unit 20, respectively structure
At three input side connecting terminals 133, so that three W phase coils of reactor winding 131 can pass through three input sides respectively
Connecting terminal 133 is connect with the output end of third inversion unit 33；Three reactor windings 131 stretch out in water-cooling unit 20
Right side, three outlet side connecting terminals 132 are respectively constituted, so that three W phase coils of reactor winding 131 can lead to respectively
Three 132 short circuits of outlet side connecting terminal are crossed, constitute the ac output end of third phase reactor 13 (that is, the C phases of three-phase alternating current are defeated
Outlet).
The every cooling tube 21 in water-cooling unit 20 is equidirectional successively respectively in axial direction as a result, is wound with three-phase reactor
One reactor winding of the different phase reactors in device, that is, can be by each three coils in three-phase reactor in water cooling tube
On correspondingly along coaxial arrangement.Due to 120 degree of the phase mutual deviation of the three-phase alternating current steady-state current exported by three-phase reactor,
So the magnetic field that three reactor windings being coaxially disposed on same root cooling tube 21 generate is in identical axis direction, because
This, the steady magnetic field that three reactors generate can cancel out each other, to reduce the reactor unit of water-cooled hollow reactor
10 pairs of extraneous steady magnetic field interference generated, and then ensure that water-cooled hollow reactor can more effectively limit semiconductor devices
(IGBT) transient state circulation in parallel, and each branch of mould parallel connection in the block is made to keep flowing.
In addition, the water-cooled hollow reactor of the embodiment of the present invention passes through to the multiphase reactor in reactor unit 10
Multiple coils cooled down by the way of water cooling, enable coolant liquid body from the water inlet positioned at 20 lower end of water-cooling unit
Mouthful flow into cooling tube 21 in, and from positioned at 20 upper end of water-cooling unit water outlet outflow, so as to hold it is current-carrying
Multiple reactor windings fully exchange heat.Therefore water-cooled hollow reactor can inhibit effective because of parallel algorithm, electric power
Electronic device characteristics are inconsistent, and caused semiconductor devices generates transient state circulation and same the problems such as unbalanced dynamic current
When, the radiating efficiency of reactor winding is improved, avoids, as previous reactor, due to that cannot radiate well, and leading to heat
Amount accumulation, ultimately causing fault influences Operation of Electric Systems.And the line footpath that reactor winding can be effectively reduced, from
And reduce the occupied space of water-cooled hollow reactor.It is compact-sized by the way that multiphase reactor is processed into integral component,
And the assembling process of water-cooled hollow reactor is simplified, to make the electric device using water-cooled hollow reactor be easy to group
Dress and maintenance, improve the production and processing technology of electric device.
According to one embodiment of present invention, the size of the cooling tube 21 of water-cooling unit 20, that is, cooling tube 21 it is straight
Diameter and length can be calculated according to winding inductance quantity, the coil turn for the multiple reactor windings being wound on every cooling tube 21
It obtains.Specifically, the diameter of cooling tube 21 and the ratio of length can be calculated by the inductance value parameter equation of reactor unit 10
It obtains：
In formula (1)：I is multiple reactor windings for being wound on every cooling tube 21 (that is, coaxial cloth in the present embodiment
Three reactor windings set) winding inductance quantity, D be every 21 diameter of cooling tube (i.e. coil is formed after being wrapped in cooling tube
Diameter), N is that (i.e. coil is wrapped in every cooling tube for the coil turns of the multiple reactor windings wound on every cooling tube 21
The number of turns of upper formation), L is length (the axial direction length formed on every cooling tube after coil winding of every cooling tube 21
Degree).Therefore, the parameter of the coil in each phase reactor of corresponding reactor unit 10, you can be calculated by formula (1) cold
But the ratio of the diameter of pipe 21 and length further can also be according to reserved for water-cooled hollow reactor in electric device
Accommodating space reasonably select water-cooling unit 20 cooling tube 21 size.Cooling in certain water-cooling unit 20
The size of pipe 21 can also be directly determined according to the accommodating space in electric device, as long as and can be by multiphase reactor
Multiple reactor windings of each phase are respectively along the outer wall that the axial screw of cooling tube 21 is wound in more cooling tubes 21.
In an alternative embodiment, the axial both ends of water-cooling unit 20 carry out grounding respectively.Fig. 4 is figure
The backsight structural representation of water-cooled hollow reactor in 1；Fig. 5 is that the plan structure of the water-cooled hollow reactor of Fig. 2 is shown
It is intended to, as shown in Figure 4 and Figure 5, illustratively, water-cooled hollow reactor further includes being separately positioned on 20 axis of water-cooling unit
To the fixing bracket 24 at both ends, fixing bracket 24 is angle platy structure, which includes two side plates, and two side plates pass through
A respective lateral edges are according to certain angle connection (for example, by using welding or integral type connection type), so that fixed
Water-cooled hollow reactor can be fixed on corresponding electric device by holder 24 by two side plates of corner board structure respectively
In accommodating space.Specifically, a fixing bracket 24 in two fixing brackets 24 passes through one of its angle platy structure
The lateral surface of side plate is connect with the end of the axial side of three cooling tubes 21 in water-cooling unit 20 using welding manner,
Lateral surface of another fixing bracket 24 by one of its angle platy structure side plate and three in water-cooling unit 20
The end of the axial other side of root cooling tube 21 is connected using welding manner, so that water-cooled hollow reactor can be filled in electric power
It is fixed in setting.Also, it is connected to the fixing bracket 24 at the axial both ends of water-cooling unit 20 while being grounded, in cooling
When liquid flows through water-cooling unit 20, the charge caused by the magnetic field of reactor unit 10 can be released in earth point
It puts, ensure that the cooling liquid in water-cooling unit 20 is in ground potential, avoid due to cooling liquid is electrically charged to water cooling
Heat-sink unit 20 causes to corrode, and the problem of had an impact in itself to water-cooling unit 20.
In the above-described embodiments, three groups of cooling tubes 21 are arranged along longitudinally side by side each other, but the implementation of the present invention
Example is not limited to this.In other examples, three groups of cooling tubes 21 can also be in triangle disposition arrangement adjacent to each other, and
It is arranged each other mutually separatedly, so as to form certain gap between adjacent cooling tube 21.In this way, equally can be by three
The respective multiple reactor windings of phase reactor, which are respectively screw, to be wound on three cooling tubes 21, to be carried out to reactor winding
It is cooling, and the water inlet 220 of water-cooling unit 20 and water outlet 230 can be according to the setting sides in above-described embodiment at this time
Formula is arranged.In addition, canoe of multiple coils on more cooling tubes 21 that multiphase reactor includes can also be with reference to existing
Coil canoe at some air reactor ontologies can equally be realized to multiple reactors in reactor unit 10
Coil carries out the purpose of water cooling, and ensures that reactor unit 10 can inhibit the transient state circulation of semiconductor devices and keep respectively simultaneously
It is flowed between connection branch.
In the above-described embodiments, cooling tube 21, the first water collector 22 and the second water collector 23 are cylindrical tube structure
(there is circular cross section), but the embodiment of the present invention is not limited to this, in other examples, water-cooling list
Cooling tube 21, the first water collector 22 and the second water collector 23 of member 20 can also be horizontal with rectangular, rectangle or triangle
The pipe structure in section, and its longitudinal length can also be according to the accommodating sky of the electric device of application water-cooled hollow reactor
Between be configured.
In addition, the inlet and outlet of every cooling tube 21 can not also be arranged on end face axially, as long as
Two end positions axial in cooling tube 21 are set.For example, in other examples, cooling tube 21 can also be at it
It is correspondingly arranged inlet and outlet at the periphery wall of axial both ends position.In addition, in the above-described embodiments, water-cooling list
The water inlet 220 and water outlet 230 of member 20 are separately positioned on the axial both ends positions of three cooling tubes 21, but the present invention
Embodiment is not limited to this.In other examples, the water inlet 220 of water-cooling unit 20 and water outlet 230 can be with
It is arranged simultaneously in the same end of axial direction of three cooling tubes 21, at this point, water inlet 220 and the needs of water outlet 230 are separately positioned on
At two cooling tubes 21 on the outermost side.
Show that reactor unit 10 has the first phase reactor 11, the second phase reactor 12 and the in above-described embodiment
The case where 13 three-phase reactor of three-phase reactor, but the embodiment of the present invention is not limited to this.In other examples, electric
Anti- device unit 10 can also include two-phase reactor or four phase reactors etc., and the reactance specifically included in reactor unit 10
The number of phases of device needs to be determined according to module number in parallel in actual electric device, that is, electric per phase in reactor unit 10
Anti- device needs to correspond with each power module being connected in parallel to each other.
In addition, in the above-described embodiments, every phase reactor in reactor unit 10, i.e. the first phase reactor 11, second
Phase reactor 12 and third phase reactor 13 include respectively three reactor windings, but the embodiment of the present invention is not limited to
This.In other examples, corresponding when reactor unit 10 includes two-phase reactor, include two per phase reactor
A reactor winding.Correspondingly, water-cooling unit 20 includes two cooling tubes 21, four reactor windings of two-phase reactor
The winding of the reactor winding of the three-phase reactor in canoe and above-described embodiment on the outer wall of two cooling tubes 21
Mode is similar.Respective two coils of two-phase reactor can be correspondingly wound in respectively on identical cooling tube 21 or
On different cooling tubes 21, preferably respective two reactor windings of two-phase reactor are correspondingly wound in respectively different
On cooling tube 21, the steady magnetic field that two-phase reactor is formed can be made to cancel out each other in this way, to reduce water-cooled hollow reactor
The steady magnetic field interference that the external world is formed.
According to one embodiment of present invention, a kind of power-converting device is additionally provided, power-converting device includes：Each other
Polyphase power module and water-cooled hollow reactor in parallel.Polyphase power mould is in the block to have multiple exchanges per phase power module
Output end, multiple reactors in every phase reactor of the multiphase reactor in the reactor unit 10 of water-cooled hollow reactor
The input terminal of coil is connect correspondingly respectively with the polyphase power mould ac output end in the block per phase power module.
According to one embodiment of present invention, a kind of wind power generating set is additionally provided, which includes upper
The power-converting device stated, wherein the power-converting device is rotor-side converter.
To sum up, the water-cooled hollow reactor of the embodiment of the present invention is by being arranged reactor unit 10 and water-cooling unit
20, the multiphase reactor in corresponding reactor unit 10 is arranged more cooling tubes 21 in water-cooling unit 20, and by multiphase
In reactor accordingly more coolings are wound in along the axial screw of cooling tube 21 per multiple reactor windings in phase reactor
On the outer wall of pipe 21, the multiphase reactor in reactor unit 10 is set to be integrated on a set of water-cooling unit 20, and lead to
The mode for crossing water-cooling cools down multiple coils in every phase reactor.Compared to existing reactor, the present invention is implemented
The water-cooled hollow reactor good heat dissipation effect of example, and it is compact-sized, it occupies little space.
The present invention can realize in other specific forms, without departing from its spirit and essential characteristics.Therefore, current reality
Apply example be all counted as being exemplary rather than in all respects it is limited, the scope of the present invention by appended claims rather than on
Description definition is stated, also, falls into the meaning of claim and whole in the range of equivalent change to be included in this
Among the range of invention.Also, the different technologies feature occurred in different embodiments can be combined, to obtain beneficial to effect
Fruit.Those skilled in the art will be understood that and realize revealed on the basis of studying attached drawing, specification and claims
The embodiment of other variations of embodiment.
Claims (17)
1. a kind of water-cooled hollow reactor, which is characterized in that including：Reactor unit (10) and water-cooling unit (20),
Wherein,
The reactor unit (10) includes mutually independent multiphase reactor, every in the multiphase reactor (11,12,13)
Phase reactor includes multiple reactor windings (111,121,131)；The multiple reactor winding per phase reactor
The input terminal of (111,121,131) respectively constitutes multiple ac input ends of the phase reactor；It is described described per phase reactor
The output end short circuit of multiple reactor windings (111,121,131) constitutes the ac output end of the phase reactor；
The water-cooling unit (20) includes more cooling tubes (21) of corresponding multiphase reactor (11,12, the 13) setting,
The more cooling tubes (21) arrange with being separated so that it is described per phase reactor multiple reactor windings (111,121,
131) axial screw it can be wound in the outer walls of the more cooling tubes (21) respectively, the more cooling tubes (21) are to being wound in
Its reactor winding is cooled down.
2. water-cooled hollow reactor according to claim 1, which is characterized in that the institute in the reactor unit (10)
The number for stating the reactor winding that every phase reactor includes and the number of phases of the multiphase reactor (11,12,13) match；
Also, the number of the more cooling tubes (21) and the number of phases of the multiphase reactor (11,12,13) match.
3. water-cooled hollow reactor according to claim 2, which is characterized in that the reactor unit (10) includes two
Phase reactor or three-phase reactor (11,12,13), it is corresponding, it is described to include two reactor windings or three per phase reactor
Reactor winding；Corresponding, the water-cooling unit (20) includes two cooling tubes (21) or three cooling tubes (21).
4. water-cooled hollow reactor according to claim 3, which is characterized in that the reactor unit (10) is three-phase
Reactor (11,12,13), it is corresponding, it is described to include three reactor windings (111,121,131) per phase reactor.
5. water-cooled hollow reactor according to claim 4, which is characterized in that described per described in three of phase reactor
The input terminal of reactor winding (111,121,131) is stretched out from the same side of the water-cooling unit (20) respectively；It is described every
The output end of three reactor windings (111,121,131) of phase reactor is respectively from the water-cooling unit (20)
The same side is stretched out.
6. water-cooled hollow reactor according to claim 5, which is characterized in that the water-cooling unit (20) includes
Three cooling tubes (21), the every cooling tube (21) along its axial winding respectively there are three the reactor winding (111,
121,131).
7. water-cooled hollow reactor according to claim 6, which is characterized in that the every cooling tube (21) is along its axis
It is each phase in the three-phase reactor (11,12,13) to three reactor windings (111,121,131) wound respectively
A reactor winding in reactor.
8. water-cooled hollow reactor according to any one of claims 1 to 7, which is characterized in that the every cooling tube
(21) diameter and length are according to the multiple reactor winding (111,121,131) for being wound in the every cooling tube (21)
Winding inductance quantity and coil turn be calculated.
9. water-cooled hollow reactor according to claim 8, which is characterized in that the diameter of the every cooling tube (21)
Calculation formula with the ratio of length is：
Wherein：I is the winding inductance quantity of the multiple reactor windings (111,112,113) wound on every cooling tube (21), and D is
Every cooling tube (21) diameter, N are the coil of the multiple reactor windings (111,121,131) wound on every cooling tube (21)
The number of turns, L are the length of every cooling tube (21).
10. according to claim 1-7 any one of them water-cooled hollow reactors, which is characterized in that the every cooling tube
(21) it is the tube body with hollow structure, the shape of the cross section of the tube body is round, rectangle or triangle.
11. water-cooled hollow reactor according to claim 10, which is characterized in that water-cooling unit (20) packet
Include water inlet (220) and water outlet (230), the respective axial both ends of the more cooling tubes (21) respectively with the water-cooling
The water inlet (220) and the water outlet (230) of unit (20) are connected to, so that coolant liquid body can pass through the water inlet
Mouth (220) and the water outlet (230) flow separately through the more cooling tubes (21).
12. water-cooled hollow reactor according to claim 11, which is characterized in that the water-cooling unit (20) is also
Including the first water collector (22) and the second water collector (23), first water collector (22) be communicated in the water inlet (220) with
And between the more cooling tubes (21)；Second water collector (23) is communicated in the water outlet (230) and more described
Between cooling tube (21).
13. water-cooled hollow reactor according to claim 12, which is characterized in that first water collector (22) and/
Or it is welded to connect between second water collector (23) and the more cooling tubes (21).
14. water-cooled hollow reactor according to claim 1, which is characterized in that the water-cooling unit (20)
Axial both ends carry out grounding respectively.
15. water-cooled hollow reactor according to claim 14, which is characterized in that the water-cooled hollow reactor is also
Fixing bracket (24) including being separately positioned on the axial both ends of the water-cooling unit (20), and the fixing bracket (24)
It is grounded respectively.
16. a kind of power-converting device, which is characterized in that the power-converting device includes：
The polyphase power module being connected in parallel to each other, the polyphase power mould is in the block to be exported per phase power module with multiple exchanges
End；With
Such as claim 1 to 15 any one of them water-cooled hollow reactor, wherein the multiphase reactor (11,12,13)
Every phase reactor in multiple reactor windings (111,121,131) input terminal and the polyphase power mould it is in the block per phase
Multiple ac output ends of power module connect correspondingly respectively.
17. a kind of wind power generating set, which is characterized in that the wind power generating set includes electric power as claimed in claim 16
Converting means.
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| CN201611260834.1A CN106531424B (en) | 2016-12-30 | 2016-12-30 | Water-cooled air reactor, power conversion device and wind generating set |
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| CN109036807A (en) * | 2018-09-10 | 2018-12-18 | 安徽兆晟新能源科技有限公司 | A kind of Multiple coil magnetic coupling reactor |
| CN112065671B (en) * | 2020-08-24 | 2021-05-18 | 江苏财经职业技术学院 | Temperature control method of liquid-cooled wind generating set |
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| JP6055306B2 (en) * | 2012-12-27 | 2016-12-27 | 川崎重工業株式会社 | Reactor |
| DE102013105120B4 (en) * | 2013-05-17 | 2019-09-26 | Reo Inductive Components Ag | Electrical and inductive components |
| CN203519779U (en) * | 2013-10-12 | 2014-04-02 | 北京赛德高科铁道电气科技有限责任公司 | Detection apparatus of three-phase inverter power module |
| CN104599825B (en) * | 2015-02-21 | 2016-10-05 | 许玉蕊 | Three-phase electromagnetic balanced energy conservation reactor |
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