CN201616756U

CN201616756U - Converter power module body device

Info

Publication number: CN201616756U
Application number: CN2009202609822U
Authority: CN
Inventors: 马丹军
Original assignee: Emerson Network Power Co Ltd
Current assignee: Vertiv Tech Co Ltd
Priority date: 2009-11-27
Filing date: 2009-11-27
Publication date: 2010-10-27
Anticipated expiration: 2019-11-27

Abstract

The utility model relates to a converter power module body device which includes a plurality of independent IGBT modules and a plurality of independent capacitance modules as well as a connecting busbar used for connecting the IGBT modules and the capacitance modules; the connecting busbar includes a first side and a second side which are mutually vertical; the capacitance modules are connected with the first side and are mutually parallel; the IGBT modules are connected with the lower part of the second side and are mutually parallel. The power module body device is divided into a plurality of capacitance modules and a plurality of IGBT modules; the sizes and the weights of each capacitance module and each IGBT module are lower and each module can be independently maintained, thus effectively reducing the maintenance cost and the maintenance difficulty.

Description

A kind of current transformer power module main body apparatus

Technical field

The utility model relates to current transformer, especially is applied to the high-power air-cooled current transformer power module main body apparatus of wind energy system.

Background technology

In wind energy system, because the particularity of its place environment, more and more higher to the requirement of current transformer, these are mainly reflected in the following aspects:

1, current transformer environment for use very severe adds the restriction of current transformer installation environment and equipment, and maintenance cost can sharply increase, and needs current transformer to have higher reliability in order to reduce maintenance cost;

2, the structure of current transformer is more and more compacter, and volume is more and more littler, and this makes that the power density of power density, especially power section of current transformer is more and more higher, requires current transformer to have good radiator structure;

3, for the ease of on-site maintenance, for the IGBT module and capacitance module requirement the carrying out modularized design of rapid wear in the current transformer.

In existing wind energy system, IGBT module, capacitance module and the fan assembly of current transformer become one, become one power model, this causes whole module volume bigger, need bigger space when safeguarding, simultaneously also cause the weight of whole module bigger, possible superelevation 70-80Kg, bring very big difficulty to maintenance, any one IGBT pipe or bus capacitor in the big module are damaged, whole module need be unloaded maintenance, these have all caused existing current transformator power module maintenance cost higher.In addition, in the power model of the current transformer of existing wind energy system, net side form piece with being connected of rotor-side module positive and negative busbar be discrete, the stray inductance amount is higher.

The utility model content

The technical problems to be solved in the utility model is, at the above-mentioned maintenance cost height of power model of the current transformer of prior art, defective difficult in maintenance, provides a kind of maintenance cost current transformer power module main body apparatus low, easy to maintenance.

The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of current transformer power module main body apparatus, comprise a plurality of independent IGBT modules and a plurality of independent capacitance module, and the busbar that is connected that is used to connect IGBT module and capacitance module, described connection busbar comprises orthogonal first limit and second limit; Described capacitance module is connected on described first limit, is parallel to each other between the capacitance module; Described IGBT module is connected on described second limit, is parallel to each other between the IGBT module.

In a kind of current transformer power module main body apparatus described in the utility model, form the first air-cooled passage between the adjacent capacitance module, form the second air-cooled passage between the adjacent IGBT module.

In a kind of current transformer power module main body apparatus described in the utility model, described capacitance module comprises bus capacitor, bus capacitor case and electric capacity busbar, described bus capacitor is installed in the described bus capacitor case, described bus capacitor links to each other with the electric capacity busbar, described electric capacity busbar be connected busbar and link to each other.

In a kind of current transformer power module main body apparatus described in the utility model, have the fixedly auricle that is used for fixing capacitance module on the described bus capacitor case, described auricle is provided with installing hole.

In a kind of current transformer power module main body apparatus described in the utility model, described bus capacitor case is provided with handle.

In a kind of current transformer power module main body apparatus described in the utility model, described IGBT module comprises IGBT, IGBT busbar, IGBT radiator and radiator case, described IGBT and IGBT radiator are installed in the radiator case, and described IGBT busbar connects IGBT and is connected busbar.

In a kind of current transformer power module main body apparatus described in the utility model, have the fixedly auricle that is used for fixing the IGBT module on the described radiator case, described auricle is provided with installing hole.

In a kind of current transformer power module main body apparatus described in the utility model, described radiator case is provided with handle.

In a kind of current transformer power module main body apparatus described in the utility model, described IGBT busbar is a stack bus bar.

Implement a kind of current transformer power module main body apparatus of the present utility model, have following beneficial effect:

1, power module main body apparatus be divided into a plurality of capacitance modules and IGBT module, each module can be safeguarded separately, effectively reduces maintenance cost and maintenance difficulties;

2, first limit that is connected the connection busbar that a plurality of capacitance modules are parallel, second limit that is connected the connection busbar that a plurality of IGBT modules are parallel, the erect-type structure of this module can effectively be utilized width spaces, is air-cooled passage between the module, passage is shorter, and windage is less;

3, the volume and weight of each capacitance module of power module main body apparatus and IGBT module is all smaller, and installation and maintenance is all very convenient;

4, the IGBT busbar of IGBT module adopts stack bus bar, can reduce the stray inductance of busbar.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the schematic perspective view of the embodiment of current transformer power module main body apparatus of the present utility model;

Fig. 2 is the front view of the embodiment of current transformer power module main body apparatus of the present utility model;

Fig. 3 is the left view of the embodiment of current transformer power module main body apparatus of the present utility model.

Embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, an embodiment for current transformer power module main body apparatus of the present utility model, it is the current transformator power module main body of 2MW wind energy system, this current transformator power module main body comprises 6 capacitance modules 10 and six IGBT modules 20, and be used to connect capacitance module 10 and IGBT module 20 be connected busbar 30, six IGBT modules 20 are divided into 3 net side form pieces (three the IGBT modules in left side) and 3 rotor-side modules (three modules in right side), each capacitance module 10 and IGBT module all are independent modules, can be single pull down maintenance.Connect busbar 30 and comprise orthogonal first limit 31 and second limit 32, six capacitance modules 10 are connected on first limit 31 that connects busbar 30, be parallel to each other between the capacitance module 10, form the first air-cooled passage 41 between the adjacent capacitor module 10, six IGBT modules 20 are connected the below on second limit 32 that connects busbar 30, be parallel to each other between the IGBT module 20, form the second air-cooled passage 42 between the adjacent capacitor module 10.In current transformator power module main body of the present utility model, owing to be divided into a plurality of capacitance modules 10 and IGBT module 20, effectively reduced the volume and weight of each module, reduced difficulty and the cost safeguarded.The erect-type structure of this module can also effectively be utilized width spaces, and the air-cooled passage length between the module is shorter, and windage is less, can guarantee effective cooling of module, and the type of cooling of preceding blowing or back air draught is all more suitable.

In the present embodiment, capacitance module 10 comprises bus capacitor 11, bus capacitor case 12 and electric capacity busbar 13, each capacitance module 10 has a plurality of bus capacitors 11, bus capacitor 11 is contained in the bus capacitor case 12, electric capacity busbar 13 connection bus electric capacity 11 be connected busbar 30, for convenience capacitance module 10 is fixed on the rack, bus capacitor case 12 is provided with fixedly auricle 121, fixedly auricle 121 is provided with installing hole 112, in addition, the installation and maintenance of capacitance module 10 for convenience also is provided with handle 123 on bus capacitor case 12.

In the present embodiment, IGBT module 20 comprises IGBT21, IGBT busbar 22, IGBT radiator (not shown) and radiator case 23, IGBT21 and IGBT radiator are installed in the radiator case 23, IGBT busbar 22 connects IGBT21 and is connected busbar 30, for convenience IGBT module 20 is fixed on the rack, radiator case 23 is provided with fixedly auricle 231, fixedly auricle is provided with installing hole 232, in addition, the installation and maintenance of IGBT module 20 for convenience also is provided with handle 233 on radiator case 23.IGBT busbar 22 is a stack bus bar, and existing relatively discrete busbar has less stray inductance.

In this example, capacitance module 10 is positioned at the top of IGBT module 20, also can adopt IGBT module 20 up in actual applications, capacitance module 10 below structure.

In conjunction with the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the present utility model.

Claims

1. current transformer power module main body apparatus, it is characterized in that, comprise a plurality of independent IGBT modules and a plurality of independent capacitance module, and the busbar that is connected that is used to connect IGBT module and capacitance module, described connection busbar comprises orthogonal first limit and second limit; Described capacitance module is connected on described first limit, is parallel to each other between the capacitance module; Described IGBT module is connected on described second limit, is parallel to each other between the IGBT module.

2. current transformer power module main body apparatus according to claim 1 is characterized in that, forms the first air-cooled passage between the adjacent capacitance module, forms the second air-cooled passage between the adjacent IGBT module.

3. current transformer power module main body apparatus according to claim 1 and 2, it is characterized in that, described capacitance module comprises bus capacitor, bus capacitor case and electric capacity busbar, described bus capacitor is installed in the described bus capacitor case, described bus capacitor links to each other with the electric capacity busbar, described electric capacity busbar be connected busbar and link to each other.

4. current transformer power module main body apparatus according to claim 3 is characterized in that, has the fixedly auricle that is used for fixing capacitance module on the described bus capacitor case, and described auricle is provided with installing hole.

5. current transformer power module main body apparatus according to claim 4 is characterized in that, described bus capacitor case is provided with handle.

6. current transformer power module main body apparatus according to claim 1, it is characterized in that, described IGBT module comprises IGBT, IGBT busbar, IGBT radiator and radiator case, described IGBT and IGBT radiator are installed in the radiator case, and described IGBT busbar connects IGBT and is connected busbar.

7. current transformer power module main body apparatus according to claim 6 is characterized in that, has the fixedly auricle that is used for fixing the IGBT module on the described radiator case, and described auricle is provided with installing hole.

8. current transformer power module main body apparatus according to claim 7 is characterized in that described radiator case is provided with handle.

9. current transformer power module main body apparatus according to claim 6 is characterized in that, described IGBT busbar is a stack bus bar.