Thermal Management System for Press-Pack IGBT Based on Liquid Metal Coolant

Yerasimou, Yerasimos; Pickert, Volker; Dai, Siyang; Wang, Zhiqiang

doi:10.1109/tcpmt.2020.3011043

Cited by 19 publications

(4 citation statements)

References 39 publications

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“…For example, the expense of large amounts of liquid metal limits potential usage in cooling mechanisms for thermal management operation schemes. [ 167,172 ] This challenge is not unique to thermal management operations but with all liquid metal applications. Therefore, potential future work should examine ways to optimize the amount of liquid metal used in circuitry with respect to function and cost.…”

Section: Challengesmentioning

confidence: 99%

Recent Advances in Deformable Circuit Components with Liquid Metal

Bury

Chun

Koh

2021

Adv Elect Materials

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Deformable electronics, specifically those incorporating liquid metal, allow for previously inaccessible mechanical behavior and exciting new technologies. This is demonstrated by recent, promising advances in the fabrication, characterization, device performance, and applications of liquid metal electronics. Through the use of liquid metals and soft, stretchable materials, it is shown that devices that provide stretchability and improved safety and comfort between humans and machines can achieve comparable or better electrical performance than conventional alternatives. Many of the latest major advances in liquid metal electronics focus on fundamental, deformable, passive circuit components and materials including capacitors, inductors, resistors, electrodes, wires, and composite materials, such as advances in biomimicry and deformation‐based sensing using both capacitors and inductors. Liquid metal passive components and materials have led to further progress in deformable secondary devices and applications such as antennas, actuators, power sources, and thermal management devices, including mechanical tuning for antennas, self‐sensing actuators, and power sources operational under stress. While deformable liquid metal electronics are still faced with challenges, the continued expansion of the field of liquid metal circuits is dramatically altering the research landscape of reconfigurable, self‐healable, and magnetically controllable electronics and revolutionalizing the way that electronics will be used in the future.

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Section: Challengesmentioning

confidence: 99%

Recent Advances in Deformable Circuit Components with Liquid Metal

Bury

Chun

Koh

2021

Adv Elect Materials

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“…The use of liquid metal as a cooling fluid in 'low' temperature applications such as electronics is currently being developed to replace water and glycol mixtures. This concept has yet to be explored in cooling electric machines [6,12]. The eutectic mixture GaInSn (7%Ga, 20.5% In, and 12.5% Sn by volume) is a liquid metal alloy rapidly increasing in popularity as a cooling medium due to its ease of handling, excellent thermal properties, chemical compatibility with other materials, and low melting point [13].…”

Section: Introductionmentioning

confidence: 99%

“…Considering the benefits and drawbacks of the cooling medium, GaInSn can offer a high cooling performance and be driven by a stationary pump [16,17]. GaInSn has been able to reduce the system's thermal resistance by 40% in comparison to water-based systems, on this basis it is fair to predict that liquid GaInSn would be a more effective cooling medium in electric machines than water/glycol mixtures [12,18].…”

Section: Introductionmentioning

confidence: 99%

An Analysis of Liquid Metal Cooling of Electrical Machines With Windings Integrated Channels

Werner,

Ahmad,

Wrobel

et al. 2023

Proceeding of International Heat Transfer Conference 17

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Liquid cooling with water-glycol mixtures is the prevailing method for cooling electric machines due to its efficiency and cost-effectiveness. However, there is ongoing research on using liquid metal as a cooling fluid for low-temperature applications which remains largely unexplored. The eutectic mixture GaInSn (7%Ga, 20.5% In, and 12.5% Sn by volume) is gaining popularity as a cooling fluid due to its favourable properties, such as easy handling, excellent thermal characteristics, compatibility with common materials, and low melting point. This study examines the feasibility of using liquid metal in stator windings with integrated cooling channels, focusing on the thermal benefits through computational fluid dynamics (CFD) analysis. A comparison is made between a machine design with integrated cooling using alternative liquid coolants, and a baseline design that relies on the conventional water-glycol 'jacket' type cooling of the motor housing. The initial theoretical findings indicate that liquid metal offers a distinct thermal performance advantages over conventional cooling solutions. However, there are still compatibility issues, including thermal, mechanical, and electromagnetic considerations, that need to be addressed to fully exploit the potential of this approach.

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“…Moreover, liquid metal offers electrical conductivity. Therefore, it is not only applied in the fluid heat transfer field [20], [21] but also in the microwave electromagnetic field [22].…”

Section: Introductionmentioning

confidence: 99%

A High-Temperature and Frequency-Reconfigurable Multilayer Frequency Selective Surface Using Liquid Metal

et al. 2022

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A high-temperature and frequency-reconfigurable multilayer frequency selective surface (FSS) based on liquid metal is proposed in this work. After construction of a multilayer dielectric cavity with specific dielectric-shaped pillars and the injection of liquid metal (EGaIn) into each layer of the cavity, the liquid metal and dielectric pillars form a slot-type bandpass FSS, and frequency reconfiguration is realized by switching the injection layer. A prototype of the proposed FSS was designed, fabricated and measured. The measured results validated the design well. The good conductivity and fluidity of the liquid metal are utilized to realize the reconfigurable electromagnetic performance of the proposed FSS. This works in the C-band (5 GHz) and Ku band (13 GHz) and has a frequency switching time between 13.1 to 14.2 s. Moreover, due to the good thermal conductivity of liquid metal, the flowing liquid metal can take away heat, and the multilayer FSS can work as cooling plate. The heat transfer performance was investigated by numerical simulations. A 1000 • plane heat source was set on the bottom surface of the double-layer FSS. The average temperature on the top surface was 62.2 • , when the liquid metal fluid in the FSS had a speed of 1 m/s. The proposed multilayer FSS has strong potential for applications in some special application fields involving stealth and hypersonic aircraft.INDEX TERMS Multilayer FSS, frequency reconfiguration, liquid metal, heat transfer.

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Thermal Management System for Press-Pack IGBT Based on Liquid Metal Coolant

Cited by 19 publications

References 39 publications

Recent Advances in Deformable Circuit Components with Liquid Metal

Recent Advances in Deformable Circuit Components with Liquid Metal

An Analysis of Liquid Metal Cooling of Electrical Machines With Windings Integrated Channels

A High-Temperature and Frequency-Reconfigurable Multilayer Frequency Selective Surface Using Liquid Metal

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