Influence of coil shapes on temperature distribution in induction heating process

Patil, Mayur; Choubey, Rahul Kumar; Jain, Prashant K.

doi:10.1016/j.matpr.2022.08.376

Cited by 15 publications

(13 citation statements)

References 20 publications

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“…The following equations are for the frequency-transient analysis in this situation, in which 32,[45][46][47][48] Subdomain Ω 1 and Ω 3 :…”

Section: Electromagnetic Heatingmentioning

confidence: 99%

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Effect of standoff distance on printability of aluminum 5356 alloy through extrusion-based metal additive manufacturing using induction heating

Choubey,

Jain

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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Induction heating as a heat source in extrusion-based metal additive manufacturing (EMAM) is gaining popularity due to its inherent benefits as a safe, clean, and precise heating source. Metal wire as a feedstock material is economically viable and highly efficient in terms of material utilization compared to powder feedstock materials. The combination of induction heating with metal wire as a feedstock through an EMAM system has been investigated in this article. The article aims to identify the standoff distance for printing aluminum 5356 in EMAM using induction heating ( Figure 1 ). In induction heating-based AM, it is crucial to identify the standoff distance between the extruder and substrate to maintain a constant extruder tip temperature and ensure a consistent liquid/solid fraction ratio for uniform material deposition. The approach adopted in this article is to perform electromagnetic and thermal multifield coupling model simulations of extruder with the substrate through a two-dimensional axe-symmetrical model using COMSOL multiphysics. The simulation model analyzed the extruder tip temperature at variable standoff distance cases during extruder heating and material deposition processes. A practical approach for thermal cartography has been used to identify extruder tip temperature during experimentation using an infrared imager. The extruder tip temperature results obtained through simulation have been compared with experimental results and found to be in close agreement with each other. A favorable temperature range of 575–625 °C is obtained through a standoff distance of 2.0 mm compared to other standoff distances taken for the study.

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“…The following equations are for the frequency-transient analysis in this situation, in which 32,[45][46][47][48] Subdomain Ω 1 and Ω 3 :…”

Section: Electromagnetic Heatingmentioning

confidence: 99%

“…The following equations can be used to represent subdomains and boundaries 32,[45][46][47][48][49] :…”

Section: Thermal Heatingmentioning

confidence: 99%

Effect of standoff distance on printability of aluminum 5356 alloy through extrusion-based metal additive manufacturing using induction heating

Choubey,

Jain

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…This EMF generates an alternating current (eddy current). Then, the basic principle of IH system is based on the creation of an eddy current within the workpiece when a conductive element is immersed in a variable magnetic field [16], the restriction of these currents due to the resistance of the material dissipates the energy and generates heat in the workpiece as shown in Figure 1.…”

Section: Basic Principle Of Induction Heatingmentioning

confidence: 99%

Efficiency Considerations of LLC Resonant Converter for Induction Heating Application

Houam¹,

Zaamouche²,

Daouadi³

et al. 2022

EJEE

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Due to the high efficiency, high power density and low EMI provided by the LLc resonant converter, it has been widely used by researchers in many fields such as induction heating (IH). This converter is based on a resonant circuit consisting of a capacitor (Cr) and two inductors Lr, Lm operating in wide output load regulating ranges for the purpose of achieving good efficiency for very high power systems using a high operating frequency. This paper aims to present a half-bridge LLC resonant converter based on power supplies for IH applications. The analysis contains five components: half bridge inverter, resonant tank, high frequency transformer, rectifier and coil. The switching bridge generates a square waveform to excite the LLC resonant tank, which will produce a resonant sinusoidal current which is transferred to the secondary of the converter through a high-frequency transformer. as it scales the voltage up or down according to the output requirements. The load represented by the equivalent circuit of the coil and work-piece is fed by the current transformed by the rectifiers. This paper provides an improved knowledge of the control of the output power for high-temperature applications through numerical simulation Considering that the load parameters and resonant frequency vary substantially throughout the system operation. The results of testing demonstrated that the proposed scheme and assembly has good efficiency, and it is well suited for magnetic induction heating systems.

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“…Induction heating (IH) is an efficient technique to generate very high temperatures for a wide range of applications, such as industrial heating (brazing and melting of steel) and domestic cooking applications [1,2]. Every application has a unique operating frequency that is determined by the shape of the workpiece and the required skin depth [3,4].…”

Section: Introductionmentioning

confidence: 99%

Single-Stage LLC Resonant Converter for Induction Heating System with Improved Power Quality

Kumar,

Goswami,

Sadhu

et al. 2024

Electricity

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This paper proposes a single-stage direct AC to high-frequency (HF) AC resonant converter based on LLC configuration for induction heating (IH) systems or HF applications. Unlike conventional converters for IH systems, the proposed topology converts the utility frequency to HF AC in a single stage without using a DC link inductor and capacitors and takes the advantages of LLC configuration. Additionally, it improves the power factor to 0.9–1, lowers the THD (3.2% experimentally), and protects against the high-frequency components. An embedded control scheme was designed to keep the HF current oscillating at a resonant frequency, ensuring zero-voltage switching. The operating principle of the proposed topology was investigated using mathematical equations and equivalent circuits. Finally, it was verified using computer simulation, and an experimental prototype of 1.1 kW was developed to demonstrate the proposed topology’s uniqueness.

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Influence of coil shapes on temperature distribution in induction heating process

Cited by 15 publications

References 20 publications

Effect of standoff distance on printability of aluminum 5356 alloy through extrusion-based metal additive manufacturing using induction heating

Effect of standoff distance on printability of aluminum 5356 alloy through extrusion-based metal additive manufacturing using induction heating

Efficiency Considerations of LLC Resonant Converter for Induction Heating Application

Single-Stage LLC Resonant Converter for Induction Heating System with Improved Power Quality

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