Nonlinear optimal on-line heat-dissipation control methodology in electronic devices

Jang, Horng-Yuan; Cheng, Chung-Hsin

doi:10.1016/j.ijheatmasstransfer.2008.11.002

Cited by 28 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The SNOM transmission and reflection-mode maps over the same region are presented in Figure 3b,c respectively, while panel d shows the temperature profile of the sample. A local optical absorption profile can be determined using the near-field transmission and reflectance signals to determine the local temperature profile and be used to calculate the local thermal expansion maps from 𝛼 f (x 0 ,y 0 ) in Equation (5). TEC maps of ML-G platelets are presented in Figure 3e-i for frequencies 𝜔 = 100, 200, 400, and 700 Hz, respectively.…”

Section: Sparse Multilayer Graphene (Ml-g) Platelets On Glassmentioning

confidence: 99%

“…With critical advances in integrated power electronics, [1] there has been a tremendous demand for nanoscale thermal management in the pursuit of miniaturization and integration of submicrometric components preserving high power density, for DOI: 10.1002/admi.202300806 example for applications in telecommunications, aircraft engines, and renewable and sustainable energy storage. [2][3][4] The need for heat dissipation is essential in many of such applications [5] as it assists in preserving the efficiency and lifespan of the circuitry components. Heat spreaders and heat sinks are typically integrated for the purpose of discharging local thermal buildup from long device operation times.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Contactless Scanning Near‐Field Optical Dilatometry Imaging at the Nanoscale

Wong,

Ezugwu,

Fanchini

2024

Adv Materials Inter

View full text Add to dashboard Cite

To date, there are very few experimental techniques, if any, that are suitable for the purpose of acquiring quantitative maps of the thermal expansivity of 2D materials and nanostructured thin films with nanoscale lateral resolution in spite of huge demand for nanoscale thermal management, for example in designing integrated circuitry for power electronics. Besides, contactless analytical tools for determining the thermal expansion coefficient (TEC) are highly desirable because probes in contact with the sample significantly perturb any thermal measurements. Here, ω‐2ω near‐field thermoreflectance imaging is presented as a novel, all‐optical, and contactless technique to map the TEC at the nanoscale with precision. Testing of this technique is performed on nanogranular films of gold and multilayer graphene (ML‐G) platelets. With ω‐2ω near‐field thermoreflectance, it is demonstrated that the TEC of Au is higher at the metal‐insulator interface, with an average of (17.12 ± 2.30) ×10−6 K−1 in agreement with macroscopic techniques. For ML‐G, the average TEC is (−5.77 ± 3.79) x10−6 K−1 and is assigned to in‐plane vibrational bending modes. A vibrational‐thermal transition from graphene to graphite is observed, where the TEC becomes positive as the ML thickness increases. The nanoscale method here reported demonstrates results in excellent agreement with its macroscopic counterparts, as well as superior capabilities to probe 2D materials and interfaces.

show abstract

Section: Sparse Multilayer Graphene (Ml-g) Platelets On Glassmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Contactless Scanning Near‐Field Optical Dilatometry Imaging at the Nanoscale

Wong,

Ezugwu,

Fanchini

2024

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…P M = (I DSrms ) 2 R DSon (18) In addition to improving the energy conversion efficiency of the converter through the improvement of the material itself, the thermal loss brought about by the current also occupies an important part of the energy loss, therefore, some researchers stand on the electro-thermal point of view to study the energy consumption of the converter. Part of the energy stored in the power electronics converter to inhibit hardware temperature rise, to meet both the application for the demand for power and focus on the control of electric heat, Wayne Weaver et al proposed a kind of multi-objective planning problem with constraints, in order to satisfy the objective function to achieve the minimum power loss at the same time, the converter will be kept stable for the operation of the temperature requirements and other relevant factors will be used as boundary conditions or constraints, which will be more effective in evaluating the energy consumption of power electronics converter [32][33][34][35].…”

Section: Switching and Conduction Lossesmentioning

confidence: 99%

A review of energy losses in power electronics converters and developments in related application fields

Liu,

Zhang,

Sun

et al. 2024

Eng. Solut. Mech. Mar. Struct. Infrastruct.

View full text Add to dashboard Cite

In recent years, the world has been paying more and more attention to the power electronics converter in the power system. The power electronics converter has made great development in its own structure and control strategy, but there are still concerns of significant energy consumption and insufficient energy saving in many fields of application, the purpose of this paper is to let researchers grasp the current situation of the power electronics converter research and advance the development of the industry. Firstly, we review and evaluate some relevant methods that can evaluate the energy consumption of power electronic converters and introduce several cases of improving the topology in order to achieve energy saving. Afterwards, we introduce and summarize the development and application of power electronic converters in specific scenarios. The review and discussion presented in this paper concludes with some limitations and concerns in the current development of power electronics converters.

show abstract

“…In many transient convective heat transfer problems, the unknown time-varying thermal boundary conditions (BCs) are difficult to be measured directly [1], yet whose online estimation is essential for improving the stability and performance of the thermal system in various engineering applications, such as aerospace thermal protection [2], chip cooling [3],…”

Section: Introductionmentioning

confidence: 99%

Model validation for structural dynamics in the aero-engine design process

Zang

Ewins

2009

Front. Energy Power Eng. China

View full text Add to dashboard Cite

A model validation technique in structural dynamics and its application in aero-engine development is introduced. The concept and the approaches of model validation based on reference data supplied from experimental tests or from supermodel simulation are discussed in detail. An aero-engine component is used as an example to demonstrate the validation using the experimental test and supermodel information, respectively. A satisfactory agreement with both approaches is achieved, and finally, a strategy of model validation for the whole engine model is introduced.

show abstract

Nonlinear optimal on-line heat-dissipation control methodology in electronic devices

Cited by 28 publications

References 18 publications

Contactless Scanning Near‐Field Optical Dilatometry Imaging at the Nanoscale

Contactless Scanning Near‐Field Optical Dilatometry Imaging at the Nanoscale

A review of energy losses in power electronics converters and developments in related application fields

Model validation for structural dynamics in the aero-engine design process

Contact Info

Product

Resources

About