CN202340177U

CN202340177U - Power module design for wind power converter

Info

Publication number: CN202340177U
Application number: CN201120456546XU
Authority: CN
Inventors: 谭永东; 李迪艺; 周立专; 孙文艺; 严长辉; 黎林
Original assignee: Guangdong Mingyang Longyuan Power Electronics Co Ltd
Current assignee: Guangdong Mingyang Longyuan Power Electronics Co Ltd
Priority date: 2011-11-17
Filing date: 2011-11-17
Publication date: 2012-07-18
Anticipated expiration: 2021-11-17

Abstract

The utility model discloses a power module design for a wind power converter, characterized in that it includes a power unit device IGBT and a heat dissipation component located below the power unit device IGBT, the power unit device IGBT includes a circuit board and a capacitor component electrically connected to the power unit device IGBT, the capacitor component includes an upper fixed plate and a lower fixed plate, a capacitor group is fixed between the upper fixed plate and the lower fixed plate, a laminated busbar connecting the capacitor group and the circuit board is provided on the upper fixed plate, and the laminated busbar includes an upper busbar and a lower busbar. The advantages of the utility model are: simple and compact structure, easy installation, reduced wires, reduced costs, good heat dissipation effect, positive and negative overlapping currents of the busbar offset each other, avoiding the generation of spike voltage and stray inductance.

Description

A kind of power module design that is used for wind electric converter

[technical field]

The utility model relates to a kind of power module design that is used for wind electric converter

[background technology]

Generally all be provided with power model in the existing wind electric converter, there is following defective in existing power model: complex structure, take up room, and lead is many, increases cost, installation and maintenance convenience.

[utility model content]

The purpose of the utility model is to overcome the weak point of prior art, provides a kind of simple in structure, compact, easy for installation, reduces lead, the power module design that is used for wind electric converter that reduces cost.

The purpose of the utility model is achieved in that

A kind of power module design that is used for wind electric converter; It is characterized in that it comprises power cell device IGBT and the radiating subassembly that is positioned at power cell device IGBT below; Power cell device IGBT comprises circuit board and the capacitance component that is electrically connected with power cell device IGBT; Described capacitance component comprises upper mounted plate and bottom plate; Be fixed with capacitance group between upper mounted plate and the bottom plate, described upper mounted plate is provided with the stack bus bar that is communicated with capacitance group and circuit board, and described stack bus bar comprises busbar and following busbar.

Aforesaid a kind of power module design that is used for wind electric converter; It is characterized in that described busbar down comprises three horizontal busbars, three horizontal busbars are respectively the middle busbar in middle level, the right busbar of middle level left side busbar and middle level, wherein go up busbar as positive pole; A left side, middle level busbar is as negative pole; Middle busbar is the short circuit busbar, separates with insulating paper between the positive and negative and short circuit busbar, and last busbar is that direct pressing gets up to be electrically connected with the right side, middle level busbar.

Aforesaid a kind of power module design that is used for wind electric converter is characterized in that described capacitance group is made up of a plurality of dc capacitors, and described a plurality of dc capacitors are distributed as two row, four row, circuit structure be two strings four also.

Aforesaid a kind of power module design that is used for wind electric converter; It is characterized in that the right busbar in described middle level is connected with the positive electrical of right row's dc capacitor; The right side of busbar is connected with the negative electricity of right row's dc capacitor in the middle of the middle level; The left side of busbar is connected with the positive electrical of the dc capacitor of left bank in the middle of the middle level; A left side, middle level busbar is connected with the negative electricity of the dc capacitor of left bank, and the right busbar in middle level is electrically connected with last busbar, and a left side, middle level busbar is connected with power cell device IGBT through absorbing electric capacity with last busbar.

Aforesaid a kind of power module design that is used for wind electric converter is characterized in that the right busbar in described middle level is a bar blocks.

Aforesaid a kind of power module design that is used for wind electric converter is characterized in that middle busbar in described middle level and a left side, middle level busbar are a rectangular blocks.

Aforesaid a kind of power module design that is used for wind electric converter is characterized in that described upward busbar is a square block.

The advantage of the utility model has: simple in structure, compact, easy for installation, reduce lead, and reduce cost, good heat dissipation effect, the positive and negative superposed current of busbar is cancelled each other, and avoids causing the generation of peak voltage and stray inductance.

[description of drawings]

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the stereogram of capacitance component;

Fig. 3 is the blast structural representation of Fig. 2;

Fig. 4 is the blast structural representation of Fig. 2.

[embodiment]

A kind of power module design that is used for wind electric converter; It is characterized in that it comprises power cell device IGBT 1 and the radiating subassembly 2 that is positioned at power cell device IGBT 1 below; Power cell device IGBT 1 comprises circuit board 11 and the capacitance component 3 that is electrically connected with power cell device IGBT 1; Described capacitance component 3 comprises upper mounted plate 31 and bottom plate 32, is fixed with capacitance group 33 between upper mounted plate 31 and the bottom plate 32, and described upper mounted plate 31 is provided with stack bus bar; Described stack bus bar comprises busbar 34 and following busbar 35; Described upward busbar 34 is a square block, and described busbar 35 down comprises three horizontal busbars, and three horizontal busbars are respectively the middle busbar 351 in middle level, the right busbar 353 of middle level left side busbar 352 and middle level.The right busbar 353 in described middle level is a bar blocks.Busbar 351 is a rectangular blocks with a left side, middle level busbar 352 in the middle of the described middle level.

IGBT is the abbreviation of insulated gate bipolar transistor; Power cell device IGBT just is meant IGBT module, the compound full-control type voltage driven type power semiconductor of being made up of BJT (double pole triode) and MOS (insulating gate type field effect tube).

Capacitance group 33 is made up of a plurality of dc capacitors 331, and described a plurality of dc capacitors are distributed as two row, four row, circuit structure be two strings four also.

The right busbar 353 in middle level is connected with the positive electrical of right row's dc capacitor; The right side of busbar 351 is connected with the negative electricity of right row's dc capacitor in the middle of the middle level; The left side of busbar 531 is connected with the positive electrical of the dc capacitor of left bank in the middle of the middle level; A left side, middle level busbar 352 is connected with the negative electricity of the dc capacitor of left bank, and the right busbar 353 in middle level is electrically connected with last busbar 34, and a left side, middle level busbar is connected with power cell device IGBT 1 through absorbing electric capacity 4 with last busbar 34.

Claims

1. A power module design for a wind power converter, characterized in that it comprises a power unit device IGBT (1) and a cooling assembly (2) positioned below the power unit device IGBT (1), the power unit device IGBT (1) ) includes a circuit board (11) and a capacitor assembly (3) electrically connected to the power unit device IGBT (1), the capacitor assembly (3) includes an upper fixed plate (31) and a lower fixed plate (32), and the upper fixed plate A capacitor group (33) is fixed between the board (31) and the lower fixing board (32), and the upper fixing board (31) is provided with a stacked busbar connecting the capacitor group (33) and the circuit board (11) , the laminated busbar includes an upper busbar (34) and a lower busbar (35).

2. The design of a power module for a wind power converter according to claim 1, wherein said lower busbar (35) comprises three horizontally arranged busbars, three horizontally arranged busbars They are the middle intermediate busbar (351), the middle left busbar (352) and the middle right busbar (353), in which the upper busbar (34) is used as the positive pole, the middle left busbar (351) is used as the negative pole, and the middle busbar (351) is used as the negative pole. The row (351) is a short-circuit busbar, and the positive and negative busbars and the short-circuit busbar are separated by insulating paper, and the upper busbar (34) and the middle layer right busbar (353) are directly pressed and electrically connected.

3. A kind of power module design for wind power converter according to claim 2, it is characterized in that described capacitor group (33) is made up of a plurality of DC capacitors (331), and described a plurality of DC capacitors (331) are distributed as two rows and four columns, and the circuit structure is two strings and four parallels.

4. The design of a power module for a wind power converter according to claim 3, characterized in that the middle right busbar (353) is electrically connected to the positive pole of the right DC capacitor, and the middle middle busbar The right side of (351) is electrically connected to the negative electrode of the DC capacitor of the right row, the left side of the middle layer middle busbar (531) is electrically connected to the positive electrode of the DC capacitor of the left row, and the DC capacitor of the middle layer left busbar (352) is connected to the left row. The negative electrode of the capacitor is electrically connected, the middle right busbar (353) is electrically connected to the upper busbar (34), and the middle left busbar and the upper busbar (34) are connected to the power unit device IGBT (1) through the absorption capacitor (4).

5. A power module design for a wind power converter according to claim 2, characterized in that the middle right busbar (353) is a strip-shaped block.

6. A power module design for a wind power converter according to claim 2, characterized in that the middle middle busbar (351) and the middle left busbar (352) are a rectangular block.

7. A power module design for a wind power converter according to claim 2, characterized in that the upper busbar (34) is a square block.