CN209283104U - Rectification inverter circuit component and frequency converter - Google Patents

Abstract

The utility model discloses a kind of rectification inverter circuit component and frequency converters, the rectification inverter circuit component is in frequency converter (100), the rectification inverter circuit component includes IGBT module (42) and multiple capacitance modules (51), the capacitance module (51) includes the multiple capacitors (512) of capacitive stack busbar (516) and setting on the capacitive stack busbar (516), the IGBT module (42) includes the multiple IGBT (421) of IGBT stack bus bar (422) and setting on the IGBT stack bus bar (422), the capacitive stack busbar (516) and the IGBT stack bus bar (422) are connected with each other and in same electrical planes.The frequency converter of the utility model is connected by being formed between IGBT stack bus bar and capacitive stack busbar without drop, it is in two kinds of stack bus bars in same electrical plane, greatly reduce stray inductance, to effectively improve the quality parameter of rectification inverter circuit component and the functional reliability of frequency converter.

Description

Rectification inverter circuit component and frequency converter

Technical field

The utility model relates to converter technology fields.

Background technique

The spuious of busbar is influenced whether for connecting the structure design of the busbar of IGBT, capacitor and diode in frequency converter The size and its qualitative reliability of inductance and calorific value, and this be measure frequency converter can reliability service key parameter.But It is complicated for connecting the connection structure of busbar of IGBT, capacitor and diode in existing frequency converter, it is easy to produce biggish Stray inductance is not sufficiently stable so as to cause the working performance of frequency converter, therefore it is necessary to the connection structure works to busbar at this stage It advanced optimizes.

Utility model content

In view of the above drawbacks of the prior art or insufficient, the utility model provides a kind of rectification inverter circuit component and change Frequency device, the connection structure concision and compact between stack bus bar, can effectively reduce stray inductance, to effectively improve commutation inversion electricity The quality parameter of road component.

To achieve the above object, the utility model provides a kind of rectification inverter circuit component, is used in frequency converter, described Rectification inverter circuit component includes IGBT module and multiple capacitance modules, and the capacitance module includes capacitive stack busbar and setting Multiple capacitors on the capacitive stack busbar, the IGBT module include that IGBT stack bus bar and setting are folded in the IGBT Multiple IGBT on layer busbar, the capacitive stack busbar and the IGBT stack bus bar are connected with each other and are in same electrical property and put down On face.

Optionally, the capacitive stack busbar and the IGBT stack bus bar are rectangle busbar, and multiple capacitors are folded Layer busbar is successively arranged side by side along the same side of the IGBT stack bus bar and the side about the same side is vertically divided equally Line is arranged symmetrically.

Optionally, the rectification inverter circuit component includes the multiple diodes for being connected to the capacitive stack busbar, more A diode, multiple IGBT and multiple capacitors are symmetrically arranged at the two of the side perpendicular bisector Side.

Optionally, the anode and the cathode anode and cathode with the IGBT stack bus bar respectively of the capacitive stack busbar It is connected, the cathode for the multiple diodes being arranged in parallel is connected to the capacitive stack busbar.

Optionally, the IGBT stack bus bar includes IGBT stack bus bar first side and IGBT stack bus bar second side Side, the capacitive stack busbar include capacitive stack busbar first side and capacitive stack busbar second side, and the IGBT is folded Layer busbar first side, IGBT stack bus bar second side, capacitive stack busbar first side and the capacitor Stack bus bar second side is parallel to each other；

Wherein, multiple IGBT are successively intervally arranged along IGBT stack bus bar first side, the capacitive stack It forms a fixed connection between busbar first side and IGBT stack bus bar second side, multiple diodes are along the electricity Hold stack bus bar second side to be successively arranged side by side, multiple capacitors on the capacitive stack busbar are in rectangular arrangement.

Optionally, in the orientation that IGBT stack bus bar first side is arranged successively, multiple IGBT, The total span of multiple capacitors and multiple diodes on multiple capacitive stack busbars is equal.

Optionally, the IGBT stack bus bar with a thickness of 5mm~10mm.

Optionally, the capacitance module includes first capacitor module and the second capacitance module, the first capacitor module and Second capacitance module is arranged symmetrically in the two sides of the side perpendicular bisector, and the capacitive stack busbar includes described The second capacitive stack busbar in first capacitor stack bus bar and second capacitance module in one capacitance module；

Wherein, the number of the IGBT is 3, on the first capacitor stack bus bar and the second capacitive stack busbar The number of the capacitor be 6, the number of the diode is 9, the side perpendicular bisector be located in the middle The symmetrical bisector of the IGBT is overlapped.

In addition, the utility model additionally provides a kind of frequency converter using above-mentioned rectification inverter circuit component.

Optionally, the frequency converter includes cabinet body, and the periphery wall of the cabinet body is equipped with the contactor mounting box of evagination, institute It states and contactor is installed in the box chamber of contactor mounting box, the rectification inverter circuit component is mounted on the cabinet chamber of the cabinet body In.

Connected between IGBT module and capacitance module in the frequency converter of the utility model by respective stack bus bar It connects, i.e., is equipped with IGBT stack bus bar in IGBT module, capacitive stack busbar is equipped in capacitance module, the two is connected with each other.Wherein, It there's almost no the relative fall in structure between IGBT stack bus bar and capacitive stack busbar interconnected, can be considered and be in In same electrical property plane, therefore the stray inductance in stack bus bar is very small, is conducive to the product for improving rectification inverter circuit component Matter performance, and then improve the functional reliability of frequency converter.

Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.

Detailed description of the invention

Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:

Fig. 1 is that the internal structure for the frequency converter for being formed with circulating current channel in specific embodiment of the present utility model is shown It is intended to；

Fig. 2 is the top view that the frequency converter of main cabinet and secondary cabinet is equipped in specific embodiment of the present utility model；

Fig. 3 is another top view of the frequency converter in Fig. 2, and main cabinet front door body is in the open state；

Fig. 4 is the rearview of the frequency converter in Fig. 2；

Fig. 5 is the structural schematic diagram that the frequency converter of contactor mounting box is equipped in specific embodiment of the present utility model, Contactor is mounted in contactor mounting box at this time；

Fig. 6 is another structural schematic diagram of the frequency converter in Fig. 5, and contactor is split out from contactor mounting box at this time；

Fig. 7 is the sectional view of the frequency converter in Fig. 5；

Fig. 8 is the top view of the frequency converter in Fig. 5；

Fig. 9 is another structural schematic diagram of the frequency converter in Fig. 5, illustrates the internal structure of contactor mounting box；

Figure 10 is another structural schematic diagram of the frequency converter in Fig. 9, and contactor mounting box is torn open from box body mounting hole at this time Out；

Figure 11 is the rear perspective view of the frequency converter in Fig. 9；

Figure 12 is another rear perspective view of the frequency converter in Figure 11, and contactor mounting box is torn open from box body mounting hole at this time Out；

Figure 13 is the perspective view of the contact modules of the frequency converter in Fig. 5；

Figure 14 is the Structure explosion diagram of the contact modules in Figure 13；

Figure 15 is the main view of the rectification inverter circuit component in specific embodiment of the present utility model；

Figure 16 is the Structure explosion diagram of the rectification inverter circuit component in Figure 15；

Figure 17 is the side view of the rectification inverter circuit component in Figure 15；

Figure 18 is the Structure explosion diagram of the rectification inverter circuit component in Figure 17.

Specific embodiment

It is described in detail below in conjunction with specific embodiment of the attached drawing to the utility model embodiment.It should be understood that It is that specific embodiment described herein is merely to illustrate and explains the utility model embodiment is not limited to this reality Use new embodiment.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the utility model embodiment, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, Bottom " be usually for direction shown in the drawings for either for vertically, vertically or gravity direction on for each component Mutual alignment relation describes word.

The utility model is described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiment.

As shown in Figure 1, the utility model provides a kind of frequency converter 100.The frequency converter 100 includes cabinet body 1, air cooling equipment With muti-piece air-duct clapboard 2.Wherein, cabinet chamber is separated into multiple module chambers by muti-piece air-duct clapboard 2, is distinguished in multiple module chambers Different modules is installed, and the air-duct clapboard 2 of modules chamber is equipped with respective module chamber air inlet and module Chamber air outlet.By the way that the structure is arranged, circulating current channel, the arrow direction in figure can be formed in the cabinet chamber of frequency converter 100 Indicate the airflow direction in the circulating current channel in one embodiment.In addition, being equipped in the circulating current channel for dropping The air cooling equipment of temperature dehumidifying, which may include blower 66 and the cool-down dehumidification radiator 31 for cool-down dehumidification.

In the course of work of frequency converter 100, the functional module in some module chambers can generate heat.At this point, air-cooled Device is also at working condition, and the cold wind being discharged from the air outlet of air cooling equipment can pass through modules chamber air inlet and module Chamber air outlet flows in different module chambers, and is finally back to the exhausting end of air cooling equipment, to be formed above-mentioned Circulating current channel for cooling.

As it can be seen that air cooling equipment is to continue to the cool-down dehumidification effect of each functional module due to the presence in circulating current channel And it is stable, and it is relatively independent between modules chamber, it can guarantee have suitable working environment in each chamber always Temperature reduces functional module and crosses the risk of thermal damage, to prolong its service life, while the reliability of frequency converter can also be made big It is big to improve.

In addition, compared with existing frequency converter, under the premise of reaching same heat dissipation effect, the frequency conversion of the utility model The exhaust air rate of air cooling equipment in device 100 is smaller, this means that the operating noise of the air cooling equipment of the utility model is smaller, and Smaller volume can be designed to, to save the production installation cost of frequency converter 100.

To sum up, the frequency converter 100 of the utility model has good heat dissipation effect, operating noise small and production installation cost Low advantage.

In some embodiments, module chamber includes the cool-down dehumidification mould for installing above-mentioned cool-down dehumidification radiator 31 Block chamber 3, certainly, air cooling equipment are also mountable in other module chambers, without the cool-down dehumidification module being separately provided Chamber 3.Since air cooling equipment can generate lasting vibration during the work time, to minimize the vibration to frequency converter bring Cool-down dehumidification module chamber 3, can be preferably provided at the bottom position of cabinet chamber, or further by adverse effect, will be air-cooled The bottom position of cool-down dehumidification module chamber 3 is arranged in device, to improve the overall stability of frequency converter 100.

It, can be based on being separated out module chamber as much as possible with air-duct clapboard 2 as few as possible to save production cost Principle determines required partition quantity.Furthermore the relative position and connectivity structure between each module chamber of reasonable Arrangement are wanted, with The gas-flow resistance in circulating current channel is minimized, accelerates the heat transfer rate in channel, to further increase radiating efficiency.

Therefore, in the above-described embodiment, the cabinet body 1 of frequency converter can be set to rectangular-shape, and utilizes air-duct clapboard 2, cabinet body top panel, cabinet floor plate, cabinet body front panel, cabinet body rear panel and one of cabinet body side panel limit jointly Cool-down dehumidification module chamber 3.Further, other air duct can be also equipped between cabinet body front panel and cool-down dehumidification radiator 31 Partition 2, user is after opening cabinet body front panel, due to the barrier of the air-duct clapboard 2, can avoid directly touching cool-down dehumidification heat dissipation Device 31.

As it can be seen that can effectively save the quantity of air-duct clapboard 2 by using the different panels of cabinet body 1 as partition, and will The avris position in 1 inner cavity of cabinet body is arranged in cool-down dehumidification module chamber 3, can convenient for other module chambers reasonable Arrangement and Connection.

In addition, air cooling equipment may include blower 66 and cool-down dehumidification radiator 31, the cool-down dehumidification radiator 31 is settable In the air draft side or exhausting side of blower 66.Under the driving of blower 66, pass through the low temperature gas after cooling of cool-down dehumidification radiator 31 Body can quickly be flowed along circulation airflow channel.And in the above-described embodiment, cool-down dehumidification radiator 31 is mountable in blower Between 66 and 1 side panel of cabinet body or blower 66 is mountable between 1 side panel of cool-down dehumidification radiator 31 and cabinet body, and or Cool-down dehumidification radiator 31 and the blower 66 described in person are installed on the air-duct clapboard.

Further, the module chamber air outlet of the cool-down dehumidification module chamber 3 and module chamber air inlet Mouth is setting up and down on the air-duct clapboard 2 of the cool-down dehumidification module chamber 3, and the blower 66 is mounted on the cooling and removes On the module chamber air inlet of wet module chamber 3.The reason of structure is arranged is, blower 66 is avoided to dissipate cool-down dehumidification Condensed water on hot device 31 is blown in other module chambers, prevents other function module from short circuit occur, to improve frequency converter 100 Stability and reliability.Alternatively, when blower 66 is possible to the condensed water on cool-down dehumidification radiator 31 being blown to other modules In the case where chamber, corresponding water-stop structure can be additionally set.

It below will be using the arragement construction of each module chamber of the frequency converter 100 in illustrating as the example to the utility model Property explanation, in fact, the modules chamber in the frequency converter 100 of the utility model may be configured as other different arrangement knots Structure, but must assure that the circulating current channel for being formed in 1 inner cavity of cabinet body and being used for cool-down dehumidification.

As shown in Figure 1, module chamber further includes the first functional module chamber 4, the second functional module chamber 5, third function Module chamber 6 and the 4th functional module chamber 7.First functional module chamber 4, the second functional module chamber 5 and third function Energy module chamber 6 is from top to bottom set gradually and the left and right sides is adjacent to cool-down dehumidification module chamber 3 and the 4th function mould respectively Block chamber 7.

Wherein, the first functional module chamber 4, the second functional module chamber 5 and third functional module chamber 6 pass through respective Air-duct clapboard 2 on ventilation hole (i.e. above-mentioned module chamber air inlet or module chamber air outlet) respectively with cool-down dehumidification mould Block chamber 3 is connected to the 4th functional module chamber 7.

Under the working condition of frequency converter 100, the cold wind being discharged from the air draft side of air cooling equipment is from cool-down dehumidification cavity block After room 3 is blown out, it is divided into two-way to flow to the first functional module chamber 4 and the second functional module chamber 5 respectively.And then, from First functional module chamber 4 and the cold wind of the second functional module chamber 5 blowout converge to the 4th functional module chamber 7.Then, from The cold wind of 4th functional module chamber 7 blowout by being back to the exhausting side of air cooling equipment after third functional module chamber 6, thus Complete primary complete airflow circulating flowing.

Specifically, frequency converter 100 include the master control borad 41 that is arranged in the first functional module chamber 4 and IGBT module 42, It the capacitance module 51 that is arranged in the second functional module chamber 5, the diode 65 being arranged in third functional module chamber 6 and connects Tentaculum 61 and the breaker 71 being arranged in the 4th functional module chamber 7, and in third functional module chamber 6 and the 4th function Reactor 9 can be additionally provided between module chamber 7.

It should be noted that IGBT module 42, capacitance module 51 and diode 65 are calorific value in frequency converter 100 Relatively large functional module needs to avoid the environment temperature in individual module chamber excessively high by three functional modules two Two are spaced apart.

Therefore, IGBT module 42 is arranged in the first functional module chamber 4 frequency converter 100 in embodiment illustrated In, by capacitance module 51 be arranged in the second functional module chamber 5 and by diode 65 be arranged in third functional module chamber 6 In.

Further, since the volume of capacitance module 51 and breaker 71 is relatively large, and according to safety requirement, breaker 71 need independent isolating to be arranged.Therefore capacitance module 51 is provided separately in the second functional module chamber 5, and breaker 71 is then It is provided separately in the 4th functional module chamber 7.

And the lesser functional module of volume and calorific value can combination settings be in the same chamber according to the actual situation.Such as In said structure, can be by master control borad 41 and 42 combination settings of IGBT module in the first functional module chamber 4, and it can be by two Pole pipe 65 and 61 combination settings of contactor are in third functional module chamber 6.

And for reactor 9, since its volume is relatively large, bottom position (third function mould can be disposed at Between block chamber 6 and the 4th functional module chamber 7) to increase mounting stability, to make each functional module in frequency converter 100 With relatively reasonable arragement construction.

IGBT module 42 biggish for calorific value and diode 65, it is scattered to further increase can be also respectively set radiator Thermal velocity, the radiator can be microchannel heat sink or gilled radiator etc., wherein microchannel heat sink is equipped with for supplying The micro-channel flat of refrigerant circulation.

Further, it is also possible to determine its module chamber air inlet and module chamber according to the different heat amount of disparate modules chamber The pore size of air outlet, alternatively, the pore size of module chamber air inlet and module chamber air outlet is set as adjusting in real time Section, to keep the temperature in each module chamber uniform, avoids generating condensation because of local overcooling in cabinet chamber, avoids circuit element short Road, to improve the reliability of frequency converter 100.

In one embodiment, as shown in Figures 2 to 4, frequency converter 100 includes main cabinet 11 and secondary cabinet 12.Wherein, main cabinet 11 Positioned at frequency converter 100 front side and be built-in with functional module, it is intracavitary that circulating current channel above-mentioned is formed in main cabinet.12, secondary cabinet It is spaced from each other between the rear side of frequency converter 100, main cabinet 11 and secondary cabinet 12 by major-minor cabinet spacing board 13.In addition, frequency converter 100 It further include frequency converter cooling system, including the secondary cabinet cooling device being arranged in secondary cabinet 12.

By being equipped with cavity main cabinet 11 spaced apart from each other and secondary cabinet 12 in frequency converter 100, so that the function of frequency converter 100 Module and cooling device can be separately mounted in main cabinet chamber and secondary cabinet chamber, to realize that subregion is arranged, be conducive to simplify cabinet chamber Interior structure and raising reliability.In addition, functional module and cooling device can dismount independently of each other and have biggish dismounting empty Between, it is easily installed maintenance, cost can be effectively saved, improve production maintenance efficiency.

For the frequency converter 100 of rectangular-shape comprising the outer housing of rectangular shape, at this time major-minor cabinet spacing board 13 Setting is separated out main cabinet 11 and secondary cabinet 12 in the outer housing with, and main cabinet 11 includes main cabinet front door body 111, and secondary cabinet 12 includes pair cabinet Back shroud 121.

As it can be seen that can individually open main cabinet front door body 111, secondary cabinet chamber when needing dismounting that the component in main cabinet chamber is arranged in In component it is unaffected.When needing dismounting that the component in secondary cabinet chamber is arranged in, then secondary cabinet back shroud 121 can be individually opened, Component at this time in main cabinet chamber is unaffected.Alternatively, main cabinet front door body 111 and secondary cabinet back shroud 121 can also be opened simultaneously, with same When the component in main cabinet chamber and secondary cabinet chamber is dismounted, to effectively improve disassembly efficiency.

In addition, frequency converter 100 further includes the main cabinet partition as air-duct clapboard 2, which is cool-down dehumidification module Partition between chamber 3 and functional module chamber, 100 cooling system of frequency converter further include being installed on cool-down dehumidification module chamber 3 Interior cool-down dehumidification radiator 31.

Further, be equipped in functional module chamber the multiple IGBT421 being arranged laterally at a spacing and transversely it is continuous simultaneously Multiple diodes 65 that arrangement is set, multiple IGBT421 and multiple diodes 65 are vertically periodically installed at major-minor cabinet spacing board 13 Front side plate face on.Secondary cabinet cooling device includes the diode radiating device being arranged in the rear side plate face of major-minor cabinet spacing board 13 122 and multiple IGBT radiators 123.

Interval region of multiple IGBT421 on major-minor cabinet spacing board 13 is subcooled and generates condensation in order to prevent, will be multiple IGBT radiator 123 is accordingly set as laterally spaced arrangement and contraposition is arranged one by one along the longitudinal direction with multiple IGBT421, i.e., IGBT radiator 123 is in split type arrangement.And diode 65 is the parallel-connection structure being transversely continuously arranged side by side, therefore by two poles Tube radiator 122 is provided accordingly to the strip in laterally consecutive extension and aligns cloth with multiple diodes 65 along the longitudinal direction It sets, i.e., diode radiating device 122 is arranged in continous way, to realize that the IGBT421's and diode 65 big to calorific value is special Heat dissipation.

Further, microchannel heat sink can be used in IGBT radiator 123 and diode radiating device 122, the microchannel Radiator includes the micro-channel flat for circulating for refrigerant, and heat exchange area is big, and cooling efficiency is higher, is conducive to improve The reliability of IGBT421 and diode 65.

IGBT421 can be designed to long bulk by some producers, and in the frequency converter 100 of the present embodiment, length is block-like IGBT421 vertically puts installation.At this point, can be incited somebody to action to improve the heat transfer area of IGBT radiator 123 to improve cooling efficiency The micro-channel flat of IGBT radiator 123 is accordingly set as in vertical long blocky.

At this point, setting split type arragement construction for IGBT radiator 123, prevent multiple IGBT421 in master in addition to being Interval region on secondary cabinet spacing board 13 is subcooled and generates other than condensation, it is also contemplated that longer wider micro-channel flat is difficult to add Work molding.And even with the IGBT radiator 123 of split type arrangement for, length also should not be too big, therefore can will The vertical extension of the micro-channel flat of IGBT radiator 123 is preferably arranged to not less than 200mm.

In addition, in projection along the longitudinal direction, multiple diodes 65 are fallen to increase heat exchange area to improve cooling efficiency In the outer outline area for entering diode radiating device 122, IGBT421 is fallen into the outer outline area of corresponding IGBT radiator 123.

On the other hand, it can set diode radiating device 122 and multiple IGBT radiators 123 to about major-minor cabinet interval The vertical centerline of plate 13 is arranged symmetrically, and keeps structure more uniform rationally, beautiful.

Specifically, frequency converter cooling system further include the refrigerant inlet being arranged on the outer wall of secondary cabinet 12 and refrigerant exit with And the refrigerant pipe between refrigerant inlet and refrigerant exit is set.Wherein, refrigerant pipe includes flowing through multiple IGBT radiators 123 multiple IGBT refrigerant pipes flow through the diode refrigerant pipe of diode radiating device 122 and flow through cool-down dehumidification radiator 31 cool-down dehumidification refrigerant pipe.Multiple IGBT refrigerant pipes, diode refrigerant pipe and cool-down dehumidification refrigerant pipe parallel connection are set It sets, guarantees the heat dissipation effect to each heat generating components.

Further, it is respectively equipped on IGBT refrigerant pipe, diode refrigerant pipe and cool-down dehumidification refrigerant pipe corresponding Throttling set, the cold medium flux in refrigerant pipe is adjusted for the difference according to calorific value, to realize intelligentized cold But it radiates.

In addition, gilled radiator can also be used in diode radiating device 122 and IGBT radiator 123, but need to be equipped with wind Machine is to take away rapidly the heat in secondary cabinet chamber.It in other words, may include a variety of radiating modes in secondary cabinet cooling device, such as air-cooled scattered Heat or refrigerant heat dissipation, will regard different situations in design and determine most suitable radiator structure.

In one embodiment, as shown in Fig. 5 to Figure 14, frequency converter 100 includes cabinet body 1 and multiple contactors 61, cabinet body 1 Periphery wall be equipped with the contactor mounting box 19 that outwardly protrudes, multiple contactors 61 be installed in contactor mounting box 19 with Circuit element in electrical isolation cabinet body 1.

By the way that above-mentioned contactor mounting box is arranged, contactor 61 can be made to be isolated from other circuit elements being mounted in cabinet chamber Part effectively avoids generating interference to the light current component in cabinet chamber, to effectively improve the job stability and reliability of frequency converter.

In some embodiments, cabinet body 1 and contactor mounting box 19 are square, and the cabinet body rear panel of cabinet body 1 is equipped with The box body mounting hole 18 of rectangle, contactor mounting box 19 extend back from the aperture peripheral wall of box body mounting hole 18, contactor installation The box chamber of box 19 is connected to the cabinet chamber of cabinet body 1.As it can be seen that contactor mounting box 19 to be arranged in the rear of cabinet body 1, can make to contact Device 61 is isolated from the circuit element in cabinet chamber, and the overall structure of cabinet body can be made more reasonable.

It, can be by the box of contactor mounting box 19 to guarantee that contactor mounting box 19 has enough space contactors 61 The thickness of chamber along the longitudinal direction is set as not less than 250mm.

To simplify structure, the contactor mounting box 19 of evagination can be connected to box by relatively simple connection types such as welding Body mounting hole 18, and there is no other fixed structures between contactor mounting box 19 and cabinet body 1.In the case, box body can be pacified The lower area of cabinet body rear panel is arranged in dress hole 18, to guarantee the Assembly stability of contactor mounting box 19.

When frequency converter 100 is equipped with above-mentioned main cabinet 11 and secondary cabinet 12, contactor mounting box 19 is mounted on major-minor cabinet interval It on plate 13 and extends back, which is located in the cabinet chamber of secondary cabinet 12.At this point, diode radiating Device 122 and IGBT radiator 123 are arranged along the longitudinal direction with diode 65 and IGBT421 contraposition respectively and are interval in contactor Mounting box 19 is arranged.For example, IGBT radiator 123, diode radiating device 122 and contactor mounting box 19 can from top to bottom successively Arranged for interval.In addition, diode refrigerant pipe and IGBT refrigerant pipe get around 19 cabling of contactor mounting box arrangement, to make Structure arrangement in secondary cabinet chamber is more reasonable.

When being equipped with above-mentioned circulating current channel in frequency converter 100, since contactor mounting box 19 is preferably provided at cabinet The lower area of body rear panel, therefore the box chamber of contactor mounting box 19 is connected to third functional module chamber 6.Become in assembling When frequency device 100, contactor 61 is first installed in contactor mounting box 19, then the function in third functional module chamber 6 is installed again It can module.

In some embodiments, frequency converter 100 includes being equipped with multiple contactors 61, contactor mounting bracket 62, contactor The contact modules of busbar 63 and contactor output busbar 64 are inputted, contactor mounting bracket 62 is in strip and is equipped with along length The carriage mounting plate face 621 that direction extends.Wherein, contactor input busbar 63 and contactor output busbar 64 are separately mounted to prop up Frame installs the two sides of plate face 621 in the width direction, and length direction of multiple contactors 61 along carriage mounting plate face 621 is arranged successively And it is located between contactor input busbar 63 and contactor output busbar 64.

When assembling frequency converter 100, above-mentioned contact modules can then be reloaded into cabinet chamber first in the exterior completion of machine In.In this way, having biggish operating space when assembling contact modules, and carried out in narrow cabinet cavity space without narrow Assembly is conducive to improve assembly efficiency and speed of production.

To reduce assembly difficulty, it can be equipped with and extend transversely and plate face forward extends out in the box chamber of contactor mounting box 19 Box chamber support plate 191, and the contactor mounting bracket 62 of strip transversely puts and including along carriage mounting plate face 621 The mounting leg 622 stretched out backward.When installing contact modules, its mounting leg 622 can be first passed through and be supported on the support of box chamber On plate 191, to realize pre-determined bit assembly, then contact modules are fixed in box chamber by fastener again.It fills herein With in the process, assembly crewman need not use always hand steered steady contact modules, therefore assembly difficulty substantially reduces, and be conducive to improve and pacify Fill efficiency.

In one embodiment, as shown in FIG. 15 to 18, a kind of rectification inverter circuit component is provided, can be used in becoming In frequency device 100.The rectification inverter circuit component includes IGBT module 42 and multiple capacitance modules 51, and capacitance module 51 includes capacitor Stack bus bar 516 and the multiple capacitors 512 being arranged on capacitive stack busbar 516, IGBT module 42 include IGBT stack bus bar 422 and multiple IGBT421 for being arranged on IGBT stack bus bar 422.Wherein, capacitive stack busbar 516 and IGBT stack bus bar 422 are connected with each other and in same electrical plane.

It should be noted that being in, same electrical plane is not necessarily referring to capacitive stack busbar 516 and IGBT stack bus bar 422 must Surely on identical structural plan.In fact, allowing capacitive stack busbar along the direction perpendicular to the plate face of busbar There are a certain range of drops between 516 and IGBT stack bus bar 422, but as long as drop between the two is smaller, can incite somebody to action Capacitive stack busbar 516 and IGBT stack bus bar 422 are considered as in same electrical plane.And in the present embodiment, as long as electric Hold the superposition thickness that the drop between stack bus bar 516 and IGBT stack bus bar 422 is not more than two busbars, the two can be regarded For in same electrical plane.

By the way that above structure is arranged, in capacitive stack busbar 516 and IGBT stack bus bar 422 in same electrical plane Stray inductance it is minimum, greatly enhance its anti-electromagnetic interference capability, reduce the damage of the electric elements due to caused by voltage breakdown Probability, impedance can be additionally reduced, to reduce calorific value and power loss.To sum up, above structure is conducive to improve The quality parameter of rectification inverter circuit component, and then improve the functional reliability of frequency converter.

It further, can be female by capacitive stack busbar 516 and IGBT lamination to make the simple for structure compact of circuit unit Row 422 is disposed as rectangle busbar, multiple capacitive stack busbars 516 along the same side of IGBT stack bus bar 422 successively side by side It is arranged and the side perpendicular bisector 425 about the same side is arranged symmetrically.Under such configuration, while being conducive to electric current each Evenly dispersed flowing on block stack bus bar.

Specifically, rectification inverter circuit component includes the multiple diodes 65 for being connected to capacitive stack busbar 516, and multiple two Pole pipe 65, multiple IGBT421 and multiple capacitors 512 are symmetrically arranged at the two sides of above-mentioned side perpendicular bisector 425, Similarly, the circuit element on stack bus bar realizes centering arrangement, keeps structure arrangement uniformly compact, is conducive to uniform point of electric current Diffusing is dynamic.

Wherein, the anode of capacitive stack busbar 516 and cathode respectively with the positive and cathode phase of IGBT stack bus bar 422 Connect, and the cathode for the multiple diodes 65 being arranged in parallel is connected to capacitive stack busbar 516.

Further, IGBT stack bus bar 422 includes IGBT stack bus bar first side 423 and IGBT stack bus bar second Side 424, capacitive stack busbar 516 include capacitive stack busbar first side 517 and capacitive stack busbar second side 518, IGBT stack bus bar first side 423, IGBT stack bus bar second side 424, capacitive stack busbar first side 517 and electricity Hold stack bus bar second side 518 to be parallel to each other.

Wherein, multiple IGBT421 are successively intervally arranged along IGBT stack bus bar first side 423, capacitive stack busbar It forms a fixed connection between a side 517 and IGBT stack bus bar second side 424, multiple diodes 65 are along capacitive stack busbar Second side 518 is successively arranged side by side, and multiple capacitors 512 on capacitive stack busbar 516 are in rectangular arrangement.As it can be seen that herein Under circuit structure, it is the connection realized between high current, high voltage component using lesser busbar space, can effectively reduce life Produce cost.

It is multiple IGBT421, multiple in addition, in the orientation that IGBT stack bus bar first side 423 is arranged successively The total span of multiple capacitors 512 and multiple diodes 65 on capacitive stack busbar 516 is equal, further makes electric current point Cloth is uniform.Simultaneously as multiple IGBT421 dispersed placements, the plate face area of IGBT stack bus bar 422 is larger.Therefore, in IGBT Under the plate face area of stack bus bar 422 and the biggish situation of the electric current wherein passed through, IGBT stack bus bar 422 can be set to thickness Relatively thin busbar is spent, equally can satisfy the demand of heat dissipation and overcurrent, is more advantageous to reduction stray inductance.Therefore, work as IGBT When stack bus bar 422 is arranged to the busbar of thinner thickness, 5mm~10mm can be set by its thickness.

In one embodiment, capacitance module 51 includes first capacitor module and the second capacitance module, first capacitor module The two sides of side perpendicular bisector 425 are arranged symmetrically in the second capacitance module, capacitive stack busbar 516 includes first capacitor mould The second capacitive stack busbar in first capacitor stack bus bar and the second capacitance module in block.

Wherein, the number of IGBT421 is 3, the capacitor 512 on first capacitor stack bus bar and the second capacitive stack busbar Number be 6, the number of diode 65 is 9, side perpendicular bisector 425 be located in the middle the symmetrical of IGBT421 Bisector is overlapped.

It should be noted that above-mentioned rectification inverter circuit component can be applicable in different types of frequency converter, including this Frequency converter 100 in the different embodiments of text.It is installed for example, the rectification inverter circuit component may be provided at the above-mentioned contactor that is equipped with In the frequency converter 100 of box 19, since the contactor 61 of frequency converter 100 is mounted in contactor mounting box 19, cabinet is intracavitary Assembly space surplus is larger.Therefore, even if capacitive stack busbar 516 and IGBT stack bus bar in rectification inverter circuit component 422 in same electrical plane, have enough spaces also to accommodate the rectification inverter circuit component, therefore need not in cabinet chamber Part busbar is set to avoid contactor 61, to guarantee that the drop between capacitive stack busbar 516 and IGBT stack bus bar is smaller.

The optional embodiment of the utility model embodiment, still, the utility model is described in detail in conjunction with attached drawing above Embodiment be not limited to the above embodiment in detail can in the range of the technology design of the utility model embodiment A variety of simple variants are carried out with the technical solution to the utility model embodiment, these simple variants belong to the utility model reality Apply the protection scope of example.

It is further to note that specific technical features described in the above specific embodiments, in not lance It in the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the utility model is implemented No further explanation will be given to various combinations of possible ways for example.

In addition, any combination can also be carried out between a variety of different embodiments of the utility model embodiment, as long as It equally should be considered as the utility model embodiment disclosure of that without prejudice to the thought of the utility model embodiment.

Claims (10)

1. a kind of rectification inverter circuit component, in frequency converter (100), which is characterized in that the rectification inverter circuit component Including IGBT module (42) and multiple capacitance modules (51), the capacitance module (51) includes capacitive stack busbar (516) and sets Multiple capacitors (512) on the capacitive stack busbar (516) are set, the IGBT module (42) includes IGBT stack bus bar (422) and multiple IGBT (421) on the IGBT stack bus bar (422), the capacitive stack busbar (516) and institute be set IGBT stack bus bar (422) are stated to be connected with each other and in same electrical plane.

2. rectification inverter circuit component according to claim 1, which is characterized in that the capacitive stack busbar (516) and The IGBT stack bus bar (422) is rectangle busbar, and multiple capacitive stack busbars (516) are along the IGBT stack bus bar (422) same side is successively arranged side by side and the side perpendicular bisector (425) about the same side is arranged symmetrically.

3. rectification inverter circuit component according to claim 2, which is characterized in that the rectification inverter circuit component includes It is connected to multiple diodes (65) of the capacitive stack busbar (516), multiple diodes (65), multiple IGBT (421) and multiple capacitors (512) are symmetrically arranged at the two sides of the side perpendicular bisector (425).

4. rectification inverter circuit component according to claim 3, which is characterized in that the capacitive stack busbar (516) Anode and cathode are connected with the anode and cathode of the IGBT stack bus bar (422) respectively, multiple two poles being arranged in parallel The cathode of pipe (65) is connected to the capacitive stack busbar (516).

5. rectification inverter circuit component according to claim 3, which is characterized in that IGBT stack bus bar (422) packet Include IGBT stack bus bar first side (423) and IGBT stack bus bar second side (424), the capacitive stack busbar (516) Including capacitive stack busbar first side (517) and capacitive stack busbar second side (518), the IGBT stack bus bar first Side (423), IGBT stack bus bar second side (424), capacitive stack busbar first side (517) and described Capacitive stack busbar second side (518) is parallel to each other；

Wherein, multiple IGBT (421) are successively intervally arranged along IGBT stack bus bar first side (423), the electricity Hold and forms a fixed connection between stack bus bar first side (517) and IGBT stack bus bar second side (424), Duo Gesuo It states diode (65) to be successively arranged side by side along capacitive stack busbar second side (518), the capacitive stack busbar (516) On multiple capacitors (512) be in rectangular arrangement.

6. rectification inverter circuit component according to claim 5, which is characterized in that along the IGBT stack bus bar first In the orientation that side (423) is arranged successively, on multiple IGBT (421), multiple capacitive stack busbars (516) The total span of multiple capacitors (512) and multiple diodes (65) is equal.

7. rectification inverter circuit component according to claim 6, which is characterized in that the IGBT stack bus bar (422) With a thickness of 5mm~10mm.

8. the rectification inverter circuit component according to any one of claim 3~7, which is characterized in that the capacitor mould Block (51) includes first capacitor module and the second capacitance module, the first capacitor module and the symmetrical cloth of the second capacitance module It sets in the two sides of the side perpendicular bisector (425), the capacitive stack busbar (516) includes in the first capacitor module First capacitor stack bus bar and second capacitance module in the second capacitive stack busbar；

Wherein, the number of the IGBT (421) is 3, the first capacitor stack bus bar and the second capacitive stack busbar On the number of the capacitor (512) be 6, the number of the diode (65) is 9, the side perpendicular bisector (425) it is overlapped with the symmetrical bisector for being located in the middle the IGBT (421).

9. a kind of frequency converter, which is characterized in that the frequency converter (100) include according to claim 1~any one of 8 described in Rectification inverter circuit component.

10. frequency converter according to claim 9, which is characterized in that the frequency converter (100) includes cabinet body (1), the cabinet The periphery wall of body (1) is equipped with the contactor mounting box (19) of evagination, is equipped in the box chamber of the contactor mounting box (19) Contactor (61), the rectification inverter circuit component are mounted in the cabinet chamber of the cabinet body (1).