CN201466981U - Heat pipe type high efficiency wind power inverter power module - Google Patents

Abstract

The heat pipe type high-efficiency wind power frequency converter power module described in the utility model includes a base plate, a heat pipe radiator is fixed at the rear of the base plate, a blower is arranged at the bottom of the heat pipe radiator, an air induction pipe is arranged at the top, and an air extraction pipe is arranged in the air induction pipe machine. During its operation, the heat emitted by the power device is conducted to the heat pipe radiator through the base plate, and under the action of the blower at the bottom of the heat pipe radiator, the heat is dissipated into the air duct, and then under the action of the exhaust fan in the air duct, The heat is quickly drawn to the outside of the inverter cabinet. The heat pipe type wind power inverter power module not only has the cooling effect of water cooling but also has the simple structure of air cooling. The heat dissipation efficiency of the module enhances the reliability of the power device operation, and at the same time reduces the overall design cost and design risk of the system, and its comprehensive cost performance is relatively high.

Description

Heat pipe type high efficiency wind power inverter power module

technical field

The utility model relates to a wind power frequency converter, in particular to a component part of the wind power frequency converter—a power module, specifically a heat pipe type high-efficiency wind power frequency converter power module.

Background technique

As a key component of the wind power inverter, the power module is responsible for the function of changing the electric energy from AC to DC and DC to AC; usually, the power module of the wind power inverter adopts a water-cooled or air-cooled structure, and the water-cooled structure is suitable for High power inverter module. The power module of the air-cooled structure includes a housing composed of a front plate, two side plates and a bottom plate, a base plate is fixed between the two side plates, IGBT power components are fixed on the base plate, and a radiator composed of heat sinks is fixed on the rear of the base plate , the lower part of the radiator is fixed with a fan. During operation, the heat generated by the IGBT power components is conducted to the heat sink formed by the heat sink through the base plate, and the fan cools the heat sink by air. Because the power module of the existing air-cooled structure uses a heat sink type radiator, the cooling effect is poor, so the air-cooled structure has advantages in the power module of the low-power inverter, and for the power module of the medium-power inverter, the two The cooling structure has certain disadvantages in terms of overall cost performance of the system. At present, the power modules of medium-power inverters are mostly solved by parallel connection of small-power air-cooling units, but this brings technical difficulties in parallel connection of power modules, and system reliability will be affected. At the same time, the air flow generated by the fan in the power module of the existing air-cooled structure is divergent (that is, it cannot flow to the outside of the cabinet according to the fixed air path), so that in the wind power inverter, the hot air flow generated by the fan in the power module will affect the wind power frequency converter. adverse effects on other electrical components in the appliance.

Utility model content

The utility model aims to solve the problem that the existing water-cooling and air-cooling structures are not suitable for medium-power frequency converter power modules, especially the cooling effect of the existing air-cooling structure is poor and the divergent wind flow generated will affect other electrical components in the wind power frequency converter. To solve the problem of adverse effects, a heat pipe type high-efficiency wind power inverter power module is provided.

The utility model is realized by adopting the following technical scheme: the heat pipe type high-efficiency wind power inverter power module includes a shell composed of a front plate, a left side plate, a right side plate and a bottom plate, and a The substrate, the IGBT power component is fixed on the front of the substrate, and the radiator is fixed on the rear. The radiator is a heat pipe radiator, and a blower is arranged at the bottom of the heat pipe radiator. An exhaust fan is arranged in the air duct.

During the operation of the heat pipe type high-efficiency wind power inverter power module described in the utility model, the heat emitted by the power device is transferred to the heat pipe radiator through the heat dissipation substrate, and the heat is dissipated to the air induction pipe under the action of the blower at the bottom of the heat pipe radiator After that, under the action of the exhaust fan in the induced air duct, the heat is quickly drawn to the outside of the inverter cabinet.

The heat pipe type high-efficiency wind power inverter power module described in the utility model not only has the cooling effect of water cooling but also has a simple structure of air cooling, and at the same time avoids the technical difficulties caused by the complex system of water cooling structure and the parallel connection of air cooling structure , which improves the heat dissipation efficiency of the inverter power module, improves the operating environment of high-power IGBT devices, enhances the reliability of power device operation, and reduces the overall design cost and design risk of the system, and its comprehensive cost performance is relatively high.

Description of drawings

Figure 1 is a front view of the heat pipe type high-efficiency wind power inverter power module with a casing;

Figure 2 is a three-dimensional schematic diagram of a heat pipe type high-efficiency wind power inverter power module with a left side plate, no right side plate, and a front plate;

Figure 3 is a three-dimensional schematic diagram of a heat pipe type high-efficiency wind power inverter power module with a left side panel and an exhaust fan, without a right side panel, a front panel, and an air duct;

Fig. 4 is the right view of Fig. 2;

Fig. 5 is the front view of Fig. 3;

Fig. 6 is a right side view of Fig. 3 .

In the attached drawings: 1- hoisting hole, 2- front panel, 3- viewing window, 4- pulley, 5- air duct, 6- heat pipe radiator, 7- blower, 8- heater, 9- left side panel, 10-base plate, 11-temperature sensor, 12-temperature switch PTC, 13-IGBT power part; 14-base plate, 15-capacitor composite busbar, 16-exhauster fan.

Detailed ways

The specific embodiment of the present utility model will be further described in conjunction with accompanying drawing now.

As shown in Figure 1, the heat pipe type high-efficiency wind power inverter power module includes a housing composed of a front panel 2, a left panel 9, a right panel and a bottom panel 14, as shown in Figures 2 and 3, the left panel 9 and the A substrate 10 is fixed between the right side plates, an IGBT power component 13 is fixed on the front of the substrate 10, a heat pipe radiator 6 is fixed on the rear, a blower 7 is arranged at the bottom of the heat pipe radiator 6, and a blower 7 is arranged on the top of the heat pipe radiator 6. The air-introducing duct 5 is provided with an exhaust fan 16 in the air-introducing duct 5 . The left side plate 9 and the right side plate serve as the supporting components of the entire heat pipe type wind power inverter power module, the air induction pipe 5, the heat pipe radiator 6, the blower 7, the substrate 10, the IGBT power component 13, the capacitor composite busbar 15, and the exhaust fan 16 are placed between the left side plate 9 and the right side plate.

Described heat pipe radiator is existing known product, and it is made of heat pipe and shell. During specific implementation, the heat pipes in the heat pipe radiator are installed on the substrate at a certain inclination angle, and the heat pipe radiator 6 is provided with a supporting shell, which covers all the heat pipes, and the shell is fixed on the substrate 10 . A blower 7 is provided at the bottom of the shell of the heat pipe radiator 6, and an air induction pipe 5 is provided on the top shell, and an exhaust fan 16 is fixed inside the air induction pipe 5. Such a structure just makes an independent power module in the heat pipe type wind power inverter power module. cooling channels.

As shown in Figures 2 and 5, during the operation of the power module of the heat pipe type high-efficiency wind power inverter, the heat emitted by the power components such as the IGBT power component 13 and the capacitor composite busbar 15 is conducted to the heat pipe radiator 6 through the substrate 10. Under the effect of the blower 7 at the bottom of the radiator 6, the heat is dissipated into the air-introduction duct 5, and then under the action of the exhaust fan 16 in the air-induction duct 5, the heat is quickly drawn to the outside of the inverter cabinet. Because the heat dissipation channel is an independent heat dissipation channel, the heat dissipation airflow generated by the blower 7 in the power module of the heat pipe type wind power inverter follows a fixed air path, that is, after the heat dissipation airflow flows through the heat pipe radiator 6 to the air induction pipe 5, the heat is quickly drawn to the outside of the drive cabinet. In this way, the cooling air flow will not have adverse effects on other electrical components in the power module of the heat pipe type wind power inverter.

In order to improve the functions of the heat pipe type high-efficiency wind power inverter power module, as shown in Fig. Ventilation holes are set at the bottom as the air intake channel of the power module; holes are opened on the rear side of the isolation plate of the reactor room as the air intake channel of the power unit.

In order to improve the functions of the heat pipe type high efficiency wind power inverter power module, a hoisting hole 1 is provided on the top of the heat pipe type wind power inverter power module, and a pulley 4 is provided on the bottom plate 14, as shown in Figures 1, 2, and 3. Using the hoisting hole 1, the overall on-site assembly of the power module can be conveniently completed. The pulley 4 supports the entire power module, and can push the power module of the heat pipe type wind power inverter into a standard cabinet as a whole, which is helpful for the assembly of large parts of the inverter.

In order to improve the functions of the power module of the heat pipe type high-efficiency wind power inverter, a protection device is installed on the power module of the heat pipe type high-efficiency wind power inverter, as shown in Figures 4 and 6. The protection device is the temperature sensor 11 arranged on the substrate 10 And the temperature switch PTC12 and the heater 8 arranged on the left side plate 9. When the power module of the heat pipe type wind power inverter is started, it is controlled according to the temperature signal detected by the temperature sensor 11 on the substrate 10. When the heat pipe type high efficiency wind power inverter When the temperature inside the power module is lower than the preset temperature, the temperature signal output by the temperature sensor 11 is sent to the corresponding control circuit. Start in a low temperature environment; when the substrate 10 exceeds the predetermined temperature, the temperature switch PTC12 is automatically disconnected, the power module stops working, and cooling is performed to prevent the IGBT power component 13 from being damaged due to excessive temperature.

Claims (4)

1. heat pipe type power module of high-efficient wind power frequency converter, comprise the shell that constitutes by header board (2), left plate (9), right plate and base plate (14), between left plate (9) and right plate, be fixed with substrate (10), substrate (10) front portion is fixed with IGBT power component (13), the rear portion is fixed with radiator, it is characterized by: described radiator is heat-pipe radiator (6), be provided with hair-dryer (7) in the bottom of heat-pipe radiator (6), the top of heat-pipe radiator (6) is provided with air inducing pipeline (5), is provided with air exhauster (16) in the air inducing pipeline (5).

2. heat pipe type power module of high-efficient wind power frequency converter as claimed in claim 1 is characterized by: described header board (2) middle part is provided with viewing window (3), and the bottom is provided with ventilation hole.

3. heat pipe type power module of high-efficient wind power frequency converter as claimed in claim 1 is characterized by: described heat pipe type wind-powered electricity generation transducer power module top is provided with hole for hoist (1), and pulley (4) is set on the base plate (14).

4. as claim 1 or 2 or 3 described heat pipe type power module of high-efficient wind power frequency converter; it is characterized by: it also comprises protective device, and described protective device is for being arranged on temperature sensor (11) and the temperature switch PTC (12) on the substrate (10) and being arranged on heater (8) on the left plate (9).

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