scholarly journals Study on Water Cooling Performance of IGBT Module in Wind Power Converter

2021 ◽  
Author(s):  
Fei Yang ◽  
Shengting Kuai ◽  
Zhe Wang
Keyword(s):  
Wind Power ◽  
Heat Dissipation ◽  
Cooling System ◽  
Simulation Models ◽  
Mathematic Model ◽  
Cooling Capacity ◽  
Power Converter ◽  
Thermal Design ◽  
Water Cooling ◽  
Outlet Channel

Thermal design of IGBT is the key technology on wind power converter design. This paper introduced a theoretical calculation method of IGBT power loss which is applicable in wind power converter engineering applications. Meantime, the corresponding mathematic model was established. Considering the divergence of application environments as well as the characteristics of water-cooling heat dissipation, simulation models of two different inlet and outlet position radiators were built in Ansys software. And then the cooling capacity of these two types of radiators was analyzed though simulation. According to the simulation results, the ipsilateral inlet and outlet channel mode radiator was selected. After the sample production of the water cooling plate is completed, the experimental platform is built and the sample was verified. Finally, the experiment results indicated the rationality and practicability of the thermal design and simulation, which provided critical references of IGBT water cooling system design. In this paper, the performance of water cooling radiators is studied, which also provides a reference for the design of other high power electronic products.

Thermal Design and Analysis of Spacecraft During Flight Missions

2013 ◽  
Author(s):  
Ahmed M. Farag ◽  
Essam E. Khalil
Keyword(s):  
Heat Dissipation ◽  
Thermal Conditions ◽  
Thermal Control ◽  
Cooling Capacity ◽  
Low Earth Orbit ◽  
External Heat ◽  
Heat Fluxes ◽  
Thermal Design ◽  
Surface Areas ◽  
Variable Space

Thermal control system (TCS) is one of the main systems in spacecraft, which guarantees the assigned thermal conditions of all subsystems and equipment during spacecraft (SC) lifetime, and partially participation in ground thermo-stating during testing. TCS is designed according to the calculation of SC thermal budget to estimate device panels’ ability for dissipation excess heat, which is emitted by SC equipment in process of nominal operation during maximum external heat flux. Calculating radiation surface areas of equipment panels is performed to reject heat dissipation. Estimating of SC panels cooling capacity during minimum external heat fluxes is required to calculate power of heaters. SC model in Low Earth Orbit (LEO) is created by thermal desktop program, in order to launch a parametric study of the variable space parameters which would effect on SC at the LEO.

Experimental Investigation on Flow and Thermal Characteristics of a Micro Phase-Change Cooling System With a Microgroove Evaporator

2006 ◽  
Author(s):  
Xuegong Hu ◽  
Dawei Tang
Keyword(s):  
Heat Transfer ◽  
Thermal Resistance ◽  
Heat Dissipation ◽  
Cooling System ◽  
Thermal Sensitivity ◽  
Thermal Characteristics ◽  
Cooling Capacity ◽  
Input Power ◽  
Maximum Heat ◽  
Transportation Capacity

In this paper, a natural convection micro cooling system with a capillary microgroove evaporator is proposed. An experimental study on the characteristics of thermal resistance, pressure drop and heat transfer of the cooling system was carried out. Experimental results indicate that the liquid fill ratio has a significant influence on thermal resistance and heat transfer in the cooling system. Increasing system’s cooling capacity at higher input power depends on decreasing the thermal resistance between the outer surfaces of the condenser and ambient environment. Compared with a flat miniature heat pipe (FMHP) and a current fan-cooled radiator for CPU chip of Pentium IV, the present micro cooling system has a stronger heat dissipation capacity. Its best cooling performance at a surface temperature of heat source below 373K reaches 1.68×106W/m2 and the maximum heat transportation capacity is 131.8W. The novel kind of cooling system is suitable for remote cooling of those electronic parts with micro size, high power and thermal sensitivity.

Analytic Thermal Design of Bitter-Type Solenoids

2015 ◽  
Vol 8 (2) ◽  
Author(s):  
W. J. Birmingham ◽  
E. M. Bates ◽  
C. A. Romero-Talamás
Keyword(s):  
Heat Dissipation ◽  
Design Method ◽  
Cooling Capacity ◽  
Thermal Design ◽  
Baltimore County ◽  
Element Analysis ◽  
University Of Maryland ◽  
Cooling Hole ◽  
Analytic Design ◽  
The University

We describe an analytic approach to designing axially water-cooled Bitter-type electromagnets with an emphasis on heat dissipation considerations. The design method here described aims to enhance the efficiency of the design process by minimizing the role of finite element analysis (FEA) software. A purely analytic design optimization scheme is prescribed for establishing the cooling hole placement. FEA software is only used to check the accuracy of analytic predictions. The analytic method derived in this paper predicts the required heat dissipation rate by approximating the volumetric joule heating profile with a smooth, continuous profile. Equations for turbulent convective heat transfer in circular ducts are generalized to model the cooling capacity of elongated cooling passages. This method is currently in use at the University of Maryland Baltimore County Dusty Plasma Laboratory to design a Bitter magnet capable of generating fields of 10 T.

Application of Micro-Tube Water-Cooling Device for the Improvement of Heat Management in Mixed White Light Emitting Diode Modules

2011 ◽  
Vol 308-310 ◽  
pp. 2422-2427 ◽  
Author(s):  
Maw Tyan Sheen ◽  
Ming Der Jean ◽  
Yu Tsun Lai
Keyword(s):  
Thermal Management ◽  
White Light ◽  
Heat Dissipation ◽  
Cooling System ◽  
Light Emitting Diode ◽  
Thermal Dissipation ◽  
Water Cooling ◽  
Cooling Device ◽  
Heat Management ◽  
Light Emitting

This paper introduces a module using the RGB-based LED design to improve the thermal management of a mixied white light LED and describes a system for heat dissipation in illuminated, high-power LED arrays. Mixed light LEDs can be produced by combining appropriate amounts of light from the red, green and blue LEDs in an array. A LED cooling system, using a micro- tube water-cooling device, was fabricated. Recycling water in the system, gave more efficient convection and the heat created by the LEDs was easily removed, in the experiments. It was shown that micro-tube water-cooling systems rendered an improvement in thermal management that effectively decreases the thermal resistance and provides very good thermal dissipation. Furthermore, the results of experiment and simulation demonstrated that a micro-tube water-cooling system is very effective in heat dissipation in LEDs and the fabrication of practical micro-water tube cooling devices for mixing light LEDs was feasible and useful

Safety P-Cycle Protection Mechanism for Smart Power Device

2013 ◽  
Vol 804 ◽  
pp. 228-232
Author(s):  
Bin Li ◽  
Ke Qing Xiong ◽  
Yi Sun ◽  
Bing Qi
Keyword(s):  
High Efficiency ◽  
Cooling System ◽  
Power Converter ◽  
Power Device ◽  
Water Cooling ◽  
Power Module ◽  
Smart Power ◽  
Protection Mechanism ◽  
Power Modules ◽  
P Cycle

Power converter with full closed loop water cooling system, works not only use water cooling characteristics of high efficiency, but also the electricity, and reducing the volume to prevent contamination. In this paper, we proposed a novel p-cycle safety protection approach that can provide rapid cycling radiating, and can restore the status of power device. For power cabinet composition, IGBT power modules and reactors is primarary radiating components, in which IGBT power modules that used for water cooling solution is modeled as the cooled automobile engine cooling system using cycling design principle. Besides, machine side and the network side of the power module is installed in separate cabinet to improve the tightness of the entire cabinet, in order to resist sandstorms.

Qualitative analysis of coupling effect of fluid velocity distribution in microchannels on the performance of the LED water cooling system

2019 ◽  
Vol 29 (10) ◽  
pp. 3893-3907
Author(s):  
Yuanlong Chen ◽  
Tingbo Hou ◽  
Xiaochao Zhou
Keyword(s):  
Velocity Distribution ◽  
High Power ◽  
Heat Dissipation ◽  
Cooling System ◽  
Fluid Velocity ◽  
Water Cooling ◽  
Content Type ◽  
Aspect Ratios ◽  
High Power Led ◽  
Water Cooling System

Purpose The purpose of this paper is to ensure adequate thermal management to remove and dissipate the heat produced by a light-emitting diode (LED) and to guarantee reliable and safe operation. Design/methodology/approach A three-dimensional (3-D) computational fluid dynamics (CFD) model was used to analyze the distribution of fluid velocities among microchannels at four different aspect ratios. Findings The results showed that at the same inlet flow rate, the larger the aspect ratio of the microchannels, the better the uniformity of the internal fluid velocity and thus better the heat dissipation performance on the surface of the high-power LED chip. In addition, the thermal performance of a high-power LED water cooling system with four different aspect ratios’ microchannel structures is further studied experimentally. Specifically, the coupling effect between the fluid velocity distribution in the microchannels and the heat dissipation performance of a high-power LED water cooling system is qualitatively analyzed and compared with the simulation results of the fluid velocity distribution. The results fully demonstrated that a larger aspect ratio of the microchannels results in better heat dissipation performance on the surface of the high-power LED chip. Originality/value Optimizing the structural parameters to facilitate a relatively uniform velocity distribution to improve the water cooling system performance may be a key factor to be considered.

Thermal Performance Analysis Based on Micro-Channel Structure of Heat Sink

2011 ◽  
Vol 697-698 ◽  
pp. 579-584
Author(s):  
Hai Gang Sun ◽  
Yong Zhou
Keyword(s):  
Thermal Performance ◽  
Heat Sink ◽  
Cooling System ◽  
Heat Stability ◽  
Electronic System ◽  
Cooling Capacity ◽  
Thermal Design ◽  
Channel Structure ◽  
Normal Operation ◽  
Large Power

Thermal performance determines the normal operation of electronic circuits and power devices. The required cooling capacity is always increasing with the abroad application of electronic system. Especially in high frequency and large power fields, the defection of fan-cooled radiator comes out. By comparison, liquid cooling system possesses better heat stability and conductivity, which not only improves the stability of system, but also reduces the working costs greatly. Cooling capacity of heat sink is mainly determined by the inner mechanical structure, it is necessary to study the different influences of related structure, so as to guide the structural design of heat sink effectively. Based on thermal analysis by changing a single structure parameter, the structural influences on thermal performance are discussed, and the acquired conclusions are of great importance in thermal design practice of heat sink.

scholarly journals Investigation on Thermal Characteristics of the Oil-Circulating Hydraulic Energy Storage System for Hybrid Mining Trucks

2021 ◽  
Vol 9 ◽  
Author(s):  
Tong Yi ◽  
Fei Ma ◽  
Chun Jin ◽  
Jichao Hong ◽  
Yanbo Liu
Keyword(s):  
Energy Storage ◽  
Heat Dissipation ◽  
Cooling System ◽  
Storage System ◽  
Thermal Characteristics ◽  
Energy Storage System ◽  
Thermal Design ◽  
Installation Space ◽  
Cooling Power ◽  
Transfer Model

The improved hydraulic energy storage system (IHESS) is a novel compact hydraulic ESS with only 10% of oil and 64.78% of installation space of the regular ones. However, its novel circulating structure and lightweight material result in poor heat dissipation. The thermodynamic and heat transfer model of IHESS with an oil-circulating layout is proposed. Based on the mining trucks’ dynamic model, thermal characteristics of IHESSs with different parameters under the actual and simplified working conditions are studied and the factors causing overheating are analyzed. Finally, a feasible thermal design is put forward, and its efficiency is analyzed. The simulation shows that more accumulators and higher recovery power lead to higher system temperature and vice versa. Under the standard simplified working condition at 40°C ambient temperature, the highest oil temperature reached is 93.13°C. About 90% of the generated heat is converted into the internal energy of nitrogen and oil. On this basis, by adopting an energy-saving passive cooling system with a cooling power of 6.68 kW, the highest temperature of the oil drops to 52.79°C and 28% of the generated heat is released through the cooling system.

scholarly journals Performance Simulation Analysis of Modular Heat Dissipation Unit

2022 ◽  
Vol 2160 (1) ◽  
pp. 012063
Author(s):  
Lining Yang ◽  
Xiaoxia Sun ◽  
Tao Zhang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Water Temperature ◽  
Heat Dissipation ◽  
Simulation Analysis ◽  
Cooling System ◽  
Cooling Capacity ◽  
Power Sources ◽  
Cooling Unit ◽  
Main Engine

Abstract In this paper, GT suite software is used to model the cooling system of military special vehicles with multiple power sources. The power drive system is composed of main engine, auxiliary engine and four hub motors. By constructing modular cooling unit, the volume of radiator and the layout of cooling unit are changed. While the total volume of radiator is unchanged, the cooling capacity of cooling system is improved. Firstly, the problem is simplified and modeled by high-temperature and low-temperature double circuit. The main engine with power of 600kW and auxiliary engine with power of 200kW are combined into a high-temperature circuit. The water temperature of the circuit is higher, about 90 ºC; Four hub motors with power of 440kw and their electrical components are combined into a low temperature circuit. The water temperature of this circuit is about 60 ºC. By modifying the volume, layout and number of radiators, the temperature of the dual circuit is analyzed, and it is found that when the total radiator volume remains the same, the cooling effect of the multi-radiator layout is better.

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