CN204696938U - A frequency converter component - Google Patents

Abstract

The utility model provides a frequency converter component, which includes an IPM power module, a busbar and a capacitor, and the capacitor and the IPM power module are connected to the busbar respectively, and also includes a heat dissipation air duct, a capacitor installation box, a busbar protective cover and a fixed The heat dissipation air duct is fixedly connected with the capacitor installation box. There are heat dissipation holes on the side wall of the heat dissipation air duct. The fixed block is fixedly connected to the side wall of the heat dissipation air duct and is located above the heat dissipation holes. On the fixed block, and one end of the IPM power module extends into the heat dissipation hole of the cooling air duct, the capacitor is installed in the capacitor installation box, and the busbar protective cover is set on the busbar; there is a slot on the fixed block, and the fixed block The side wall is provided with a pressing screw hole connected with the slot; the side wall of the heat dissipation air duct is provided with a handle. In the utility model, the vertically upward heat dissipation air duct improves the heat dissipation efficiency of the IPM power module, and the installation positions of the bus bars and capacitors are close to the IPM power module, so that the structure is compact and the stray inductance is reduced.

Description

A frequency converter component

Technical field:

The utility model relates to a frequency converter assembly, which belongs to the technical field of air blowers.

Background technique:

The frequency converter used for the 300KW maglev blower is a high-power (300KW) high-speed (600HZ) frequency converter. In the structural design process of the high-power high-speed frequency converter, it is necessary to consider comprehensively: (1) The heat dissipation of the power device (the temperature of the power device directly affects (2) Connection stress of power devices (stress will directly cause fatal damage to power devices); (3) Distributed capacitance and stray inductance (affecting electrical performance and operating efficiency of equipment).

Utility model content:

The utility model provides a frequency converter component in order to solve the above-mentioned existing problems in the prior art.

The technical solutions adopted in the utility model include: a frequency converter assembly, including an IPM power module, a busbar and a capacitor, and the capacitor and the IPM power module are respectively connected to the busbar correspondingly, and it also includes a cooling air duct and a capacitor installation box , busbar protection cover and fixing block, the heat dissipation air duct is fixedly connected with the capacitor installation box, the side wall of the heat dissipation air duct is provided with heat dissipation holes, the fixing block is fixedly connected on the side wall of the heat dissipation air duct, and is located in the heat dissipation hole Above, the terminal of the IPM power module is fixedly connected to the fixed block, and one end of the IPM power module extends into the cooling hole of the cooling air duct, the capacitor is set in the capacitor installation box, and the busbar protection cover is set on the busbar , The fixed block is provided with a slot, and the side wall of the fixed block is provided with a pressing screw hole communicating with the slot; the side wall of the heat dissipation air duct is provided with a handle.

Further, the busbar protective cover is fixedly connected with a mounting column, and the busbar protective cover is arranged on the busbar through the mounting column.

The utility model has the following beneficial effects:

(1) The vertically upward heat dissipation air duct in the utility model improves the heat dissipation efficiency of the IPM power module, and the installation position of the busbar and capacitor is close to the IPM power module, which has a compact structure and reduces stray inductance;

(2) The capacitor and the busbar are connected in a stacked manner to make the structure more compact and reduce the appearance of stray inductance;

(3) A fixed block is added to the wiring of the IPM power module, which reduces the bearing capacity of the input and output pins of the IPM power module, thus protecting the IPM power module from damage and improving the safety and reliability of use.

Description of drawings:

Fig. 1 is a structural schematic diagram of the frequency converter assembly of the present invention.

Fig. 2 is another structural schematic diagram of the frequency converter assembly of the present invention.

in:

1-IPM power module; 2-busbar; 3-capacitor; 4-cooling air duct; 5-capacitor installation box; 6-busbar protective cover; 7-fixing block; 41-cooling hole; 42-handle; Mounting column; 71-presses the threaded hole.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is further described.

Please refer to Figure 1 and Figure 2, the inverter assembly of the utility model includes an IPM power module 1, a busbar 2 and a capacitor 3, and the capacitor 3 and the IPM power module 1 are connected to the busbar 2 respectively. The utility model is to make the IPM power module 1. The installation structure between the busbar 2 and the capacitor 3 is more compact, thereby reducing the stray inductance. There is a cooling air duct 4 for installing the IPM power module 1 and a capacitor installation box 5 for installing the capacitor 3. The cooling air The channel 4 is fixedly connected to the capacitor installation box 5 , the IPM power module 1 is arranged on the side wall of the heat dissipation air channel 4 , and the capacitor 3 is arranged in the capacitor installation box 5 . A heat dissipation hole 41 is provided on the side wall of the heat dissipation air duct 4 , and one end of the IPM power module 1 extends into the heat dissipation air duct 4 through the heat dissipation hole 41 .

In order to better fix and connect the IPM power module 1 to the side wall of the heat dissipation air duct 4 in the utility model, a fixed block 7 is fixedly connected to the side wall of the heat dissipation air duct 4 and above the heat dissipation holes 41. The fixed block 7 A slot (not shown in the figure) is provided on the top, and a compression threaded hole 71 communicating with the slot is provided on the side wall of the fixed block 7 . The terminals of the IPM power module 1 are plugged into the slots of the fixing block 7 , and the terminals of the IPM power module 1 are pressed against the slots of the fixing block 7 by screwing screws into the screw holes 71 .

In order to better protect the busbar 2, the utility model is provided with a mounting column 61 and a busbar protective cover 6 on the busbar 2, and the busbar protective cover 6 is arranged on the busbar 2 through the mounting column 61. The busbar 2 and the capacitor 3 in the utility model are connected in a laminated manner, which makes the structure more compact and reduces the appearance of stray inductance.

In order to facilitate the handling of the inverter assembly of the present utility model, a handle 42 is provided on the side wall of the cooling air duct 4 .

The above is only a preferred embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements can be made without departing from the principle of the utility model, and these improvements should also be regarded as the present invention. Protection scope of utility model.

Claims (2)

1. A frequency converter assembly, comprising an IPM power module (1), a busbar (2) and a capacitor (3), the capacitor (3) and the IPM power module (1) are respectively connected to the busbar (2), It is characterized in that it also includes a heat dissipation air duct (4), a capacitor installation box (5), a busbar protection cover (6) and a fixing block (7), and the heat dissipation air duct (4) and the capacitor installation box (5) are fixed connected, the side wall of the heat dissipation air duct (4) is provided with a heat dissipation hole (41), the fixed block (7) is fixedly connected to the side wall of the heat dissipation air duct (4), and is located above the heat dissipation hole (41), the The terminal of the IPM power module (1) is fixedly connected to the fixed block (7), and one end of the IPM power module (1) extends into the heat dissipation hole of the heat dissipation air duct (4), and the capacitor (3) is arranged in the capacitor installation box (5), the busbar protection cover (6) is set on the busbar (2), the fixed block (7) is provided with a slot, and the side wall of the fixed block (7) is provided with the plug The grooves communicate with each other to press the threaded holes (71), and the side wall of the heat dissipation air passage (4) is provided with a handle (42). 2. A frequency converter assembly according to claim 1, characterized in that: the busbar protective cover (6) is fixedly connected with a mounting column (61), and the busbar protective cover (6) passes through the mounting column (61) is arranged on the busbar (2).