CN201975982U

CN201975982U - IGBT (Insulated Gate Bipolar Translator) module of high-power converter

Info

Publication number: CN201975982U
Application number: CN2011201038188U
Authority: CN
Inventors: 姜碧光; 矫财东; 谢贤定
Original assignee: ZHEJIANG EIFESUN ENERGY TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG EIFESUN ENERGY TECHNOLOGY Co Ltd
Priority date: 2011-04-11
Filing date: 2011-04-11
Publication date: 2011-09-14
Anticipated expiration: 2021-04-11

Abstract

The utility model provides an integrated IGBT (Insulated Gate Bipolar Translator) module of a high-power converter, which has convenience in maintenance and assembly, and can reduce stray inductance and solve the problem of poor heat radiation of an IGBT power module. The IGBT module comprises a base, a direct-current side supporting capacitor, an IGBT power module, a heat-radiating slice, a direct-current side bus anode copper bar, a direct-current side bus cathode copper bar and an alternating-current side output copper bar, wherein an anode and a cathode of the direct-current side supporting capacitor are respectively connected with the direct-current side bus anode copper bar and the direct-current side bus cathode copper bar, the direct-current end of the IGBT power module is connected with the direct-current side bus anode copper bar and the direct-current side bus cathode copper bar respectively, the alternating-current end of the IGBT power module is connected with the alternating-current side output copper bar; the direct-current side bus anode copper bar, the direct-current side bus cathode copper bar and the alternating-current side output copper bar are respectively installed on the surface of the base, both opposite side surfaces of the base are communicated to form a heat-radiating air channel, the direct-current side supporting capacitor and the heat-radiating slice are respectively installed at both sides of the heat-radiating air channel, the IGBT power module is in contact with the heat-radiating slice, and the extending direction of the heat-radiating slice is the same as the direction of the heat-radiating air channel.

Description

High-power converter IGBT module

Technical field

The utility model relates to the power model in the power inverter conversion, is specifically related to wherein incorporate IGBT module.

Background technology

In fields such as wind power generation, frequency converter, photovoltaic generations; usually can use powerful insulated gate bipolar transistor IGBT(Insulated Gate Bipolar Transistor); its two kinds of advantages with GTR and MOSFET are the little and saturation pressure reduction of driving power, thereby are extensively used.Because the IGBT module usually is operated in frequent on off state, general switching frequency is all more than 1Khz, can produce bigger heat, therefore heat dissipation problem is more outstanding, and because the heat that the support electric capacity (electrochemical capacitor or thin-film capacitor) of its inside is produced, influence the performance that supports electric capacity owing to can't in time dispersing, and then influence the characteristic of power device in internal system.Therefore, the heat radiation of properly settling the IGBT module is very necessary.

Summary of the invention

In order to overcome the heat radiation aspect technological deficiency of above-mentioned existing IGBT module, the utility model provides a kind of high-power converter IGBT module that maintains easily assembling of integration, not only stray inductance can be reduced as far as possible, and the heat dissipation problem of IGBT power model can be solved.

High-power converter IGBT module provided by the utility model, comprise base, DC side supports electric capacity, the IGBT power model, fin, the anodal copper bar of DC side bus, DC side bus negative pole copper bar and AC side output copper bar, the both positive and negative polarity that described DC side supports electric capacity connects anodal copper bar of DC side bus and DC side bus negative pole copper bar respectively, the dc terminal of described IGBT power model connects anodal copper bar of DC side bus and DC side bus negative pole copper bar respectively, the interchange end of described IGBT power model connects AC side output copper bar, the anodal copper bar of described DC side bus, DC side bus negative pole copper bar and AC side output copper bar are installed in respectively on the surface of base, the relative two sides of base connect and form heat dissipation wind channel, described DC side support electric capacity and fin are installed in the both sides of heat dissipation wind channel respectively, described IGBT power model contacts with fin, and the bearing of trend of described fin is identical with the direction of heat dissipation wind channel.

Advantage of the present utility model is: integral body is made modularization, can make things convenient for producers to assemble, raise labour efficiency, can also make things convenient for the later stage I﹠M, so not only help to reduce preventive maintenance time, and help to reduce production costs.To support electric capacity and separate, and support electric capacity and IGBT power model and dispel the heat separately, can prevent that heat that above-mentioned device produces from transmitting mutually and disturb with the IGBT power model.It is shorter that relative two sides by base connect the heat dissipation wind channel path of formed IGBT inside modules, heat can be in the inner stagnation of base, can make full use of blower fan, thereby make cold wind effectively take away heat by heat dissipation wind channel fast, reduce the temperature of IGBT power model and support electric capacity, thereby can prolong the life-span of device, satisfy the requirement of equipment operation and reduce cost.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Description of drawings

Fig. 1 is the three-dimensional view of high-power converter IGBT module embodiment of the present utility model.

Fig. 2 is the plan view of high-power converter IGBT module embodiment of the present utility model.

Embodiment

As Fig. 1, shown in Figure 2, high-power converter IGBT module embodiment of the present utility model, comprise base 1, DC side supports electric capacity 2, IGBT power model 7, fin 10, the anodal copper bar 4 of DC side bus, DC side bus negative pole copper bar 5 and AC side output copper bar 9, the both positive and negative polarity that DC side supports electric capacity 2 connects anodal copper bar 4 of DC side bus and DC side bus negative pole copper bar 5 respectively, the dc terminal of IGBT power model 7 connects anodal copper bar 4 of DC side bus and DC side bus negative pole copper bar 5 respectively, the interchange end of IGBT power model 7 connects AC side output copper bar 9, also connecting IGBT drive plate 8 on the IGBT power model 7, IGBT drive plate 8 mainly comprises various interface, be used for detecting, drive IGBT and protection IGBT: detecting unit is used for detecting the working condition of IGBT, and failure alarm signal is provided; Driver element is used to provide drive signal and drives IGBT power model 7; Protection IGBT unit mainly is to be used for cutting off the IGBT drive signal, to reach the purpose of protection IGBT.IGBT drive plate 8, the anodal copper bar 4 of DC side bus, DC side bus negative pole copper bar 5 and AC side output copper bar 9 are installed in respectively on the surface of base 1, the relative two sides of base 1 connect and form heat dissipation wind channel 11, and DC side supports that electric capacity 2 and fin 10 are installed in the both sides of heat dissipation wind channel 11 respectively and respectively towards the air inlet of heat dissipation wind channel 11.The DC side of present embodiment is installed in with supporting electric capacity 2 marshallings and is beneficial to the air communication mistake in the heat dissipation wind channel 11, and IGBT power model 7 contacts with fin 10 after being coated with the last layer heat dissipating silicone grease, and the bearing of trend of fin 10 is identical with the direction of heat dissipation wind channel 11.Air-flow enters into embodiment inside from heat dissipation wind channel 11 1 side openings, and process heat dissipation wind channel 11 is taken away the heat on DC side support electric capacity 2 and the fin 10, leaves embodiment from heat dissipation wind channel 11 relative opposite side openings then.

In order further to make high-power converter IGBT module embodiment steady operation, between the dc terminal both positive and negative polarity of IGBT power model 7, be provided with DC side and absorb electric capacity 6, DC side absorbs electric capacity 6 and is positioned on the surface of base 1.DC side absorbs the stray inductance that electric capacity 6 can reduce the embodiment DC side, thereby improves the overall operation stability of embodiment.

Claims

1. high-power converter IGBT module, comprise base (1), DC side supports electric capacity (2), IGBT power model (7), fin (10), the anodal copper bar (4) of DC side bus, DC side bus negative pole copper bar (5) and AC side output copper bar (9), the both positive and negative polarity that described DC side supports electric capacity (2) connects anodal copper bar (4) of DC side bus and DC side bus negative pole copper bar (5) respectively, the dc terminal of described IGBT power model (7) connects anodal copper bar (4) of DC side bus and DC side bus negative pole copper bar (5) respectively, the interchange end of described IGBT power model (7) connects AC side output copper bar (9), the anodal copper bar (4) of described DC side bus, DC side bus negative pole copper bar (5) and AC side output copper bar (9) are installed in respectively on the surface of base (1), it is characterized in that: the relative two sides of described base (1) connect and form heat dissipation wind channel (11), described DC side support electric capacity (2) and fin (10) are installed in the both sides of heat dissipation wind channel (11) respectively, described IGBT power model (7) contacts with fin (10), and the bearing of trend of described fin (10) is identical with the direction of heat dissipation wind channel (11).

2. high-power converter IGBT module according to claim 1 is characterized in that: be provided with DC side between the dc terminal both positive and negative polarity of described IGBT power model (7) and absorb electric capacity (6), DC side absorbs electric capacity (6) and is positioned on the surface of base (1).