Unlock instant, AI-driven research and patent intelligence for your innovation.

A composite cooling system dedicated to AC-DC-AC inverters

A technology of cooling system and frequency conversion system, which is applied in the direction of cooling/ventilation/heating transformation, conversion equipment for intermediate conversion to direct current conversion, electrical components, etc., and can solve the difficulty, adaptability, structure, size, and stability of adding two sets of systems The efficiency and economy can not meet the diversity, the frequency converter is hot and other problems, so as to improve the adaptability of the system power supply, enhance the adaptability of the environment, and reduce the complexity of the power supply.

Active Publication Date: 2017-06-16
CHAJNA MAJNING DRAJVS EHND AUTOMEHJSHN KO
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the self-heating of high-power AC-DC-AC inverters is relatively severe, and the air-cooled heat dissipation system of the inverter alone cannot meet the heat dissipation requirements. The use of an external water-cooled heat dissipation system will increase the volume of the system and increase two Difficulty in Coordinated Control of a System
In order to solve these problems, some system solutions have been proposed and have achieved certain results; at this stage, the air-cooled heat dissipation system of the AC-DC-AC inverter itself is limited by the volume of the inverter, and the heat dissipation capacity is limited, which cannot meet the environmental conditions of the inverter. The heat dissipation requirements required for stable operation in harsh occasions; when an external water cooling system is used to dissipate heat for the inverter, the system structure is complex and bulky, which limits the application of high-power inverters to a certain extent; in addition, the existing technology The current water cooling system has been unable to meet the diversity of applications in the existing technology in terms of adaptability, structure, size, stability, economy, etc., and is not convenient for large-scale promotion and use. Therefore, a new technology is urgently needed solutions to the above technical problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A composite cooling system dedicated to AC-DC-AC inverters
  • A composite cooling system dedicated to AC-DC-AC inverters
  • A composite cooling system dedicated to AC-DC-AC inverters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] see figure 1 , a composite cooling system dedicated to AC-DC-AC inverters, the composite cooling system includes a frequency conversion system and a cooling system; the frequency conversion system and the cooling system communicate through RS485 and CAN bus; the cooling system includes The main circulation pump, the inner composite radiator, the outer composite radiator and the slow-flow heating tank; the main circulation pump, the inner composite radiator, the outer composite radiator and the slow-flow heating tank are connected through pipelines; the cooling system also includes a control system; the main circulation pump, the inner composite radiator, the outer composite radiator and the slow-flow heating tank are all connected to the control system; the main pump outlet pressure sensor PS1 is arranged between the outer composite radiator and the main circulation pump; A main pump water inlet pressure sensor PS3 is set between the main circulation pump and the slow ...

Embodiment 2

[0018] see figure 1 , figure 2 , as an improvement of the present invention, the frequency conversion system includes an AC-DC-AC converter, a first inverter I1, a second inverter I2, and the first inverter I1 is in phase with the main circulation pump M1 The second inverter I2 is connected to the fan M2 in the external composite radiator, and the fan of the external composite radiator is also a fan of the converter cabinet of the frequency converter. The rest of the structures and advantages are the same as in Implementation 1.

Embodiment 3

[0020] see figure 1 , image 3 , as an improvement of the present invention, the slow-flow heating tank includes a slow-flow tank and a U-shaped DC heater, the U-shaped DC heater 1 is arranged in the slow-flow tank 2, and the U-shaped DC heater 1 Take power directly through the DC bus of the AC-DC-AC inverter, reducing the complexity of the system power supply; the slow-flow heating tank buffers the water flow through the slow-flow tank, and cooperates with the main circulation pump to control the flow rate and pressure, and is heated by U-shaped direct current Compared with the traditional water cooling system, the slow-flow heating tank reduces the functions of degassing, replenishing air, and replenishing water in the balance box, and simplifies the structure to reduce the volume; the fan of the external composite radiator is controlled by frequency conversion, and the cooling can be controlled. The cooling power of the system realizes the energy saving of the whole syste...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a special composite type cooling system for an alternating-current-alternating frequency converter. The special composite type cooling system comprises a frequency conversion system and a cooling system, wherein the frequency conversion system is communicated with the cooling system through RS485 and CAN buses; the cooling system comprises a main circulating pump, an inner composite heat dissipater, an outer composite heat dissipate and a slow flow heating tank; the main circulating pump, the inner composite heat dissipater, the outer composite heat dissipater and the slow flow heating tank are connected through pipelines; the cooling system further comprises a control system; the main circulating pump, the inner composite heat dissipater, the outer composite heat dissipater and the slow flow heating tank are connected with the control system; a main pump water discharging pressure sensor PS1 is arranged between the outer composite heat dissipater and the main circulating pump; a main pump water feeding pressure sensor PS3 is arranged between the main circulating pump and the slow flow heating tank; a water supply pressure sensor PS2 and a water supply temperature sensor TS1 are arranged between the outer composite heat dissipater and the inner composite heat dissipater.

Description

technical field [0001] The invention relates to a cooling system, in particular to a composite cooling system dedicated to an AC-DC-AC frequency converter, and belongs to the technical field of power electronics and intelligent control. Background technique [0002] AC-DC-AC inverters have been widely used in many industries, and their capacity is getting bigger and bigger. However, the self-heating of high-power AC-DC-AC inverters is relatively severe, and the air-cooled heat dissipation system of the inverter alone cannot meet the heat dissipation requirements. The use of an external water-cooled heat dissipation system will increase the volume of the system and increase two The difficulty of coordinating and controlling the set of systems. In order to solve these problems, some system solutions have been proposed and have achieved certain results; at this stage, the air-cooled heat dissipation system of the AC-DC-AC inverter itself is limited by the volume of the inverte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/44H05K7/20
CPCH02M5/44H05K7/20927
Inventor 谭国俊李浩徐世周何凤有吴轩钦
Owner CHAJNA MAJNING DRAJVS EHND AUTOMEHJSHN KO