Model of Induction Heater on Permanent Magnets Using Wind Energy

Grigorash, O. V.; Kirichenko, Anna; Pigarev, Kirill V.

doi:10.1109/icieam.2019.8743026

Cited by 4 publications

(7 citation statements)

References 4 publications

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“…The alternating magnetic field induces a voltage, which leads to the flow of eddy currents in the conducting material and as a result to the dissipation of heat. Magnetic conductors dissipate additional heat through the effect of magnetic hysteresis [78]. Alternatively, the permanent magnets can be rotated around a static conductor, resulting in the same induction heating effect.…”

Section: Induction-based Windthermal Conversionmentioning

confidence: 99%

“…Most of the authors refer to this concept as "eddy currents" [10,59,[69][70][71]76]. Further denominations are "induction heater" [78], "induction retarder" [9], "electromagnetic induction" [34,38,39], and "magnetic vortex" [28].…”

Section: Induction-based Windthermal Conversionmentioning

confidence: 99%

“…Apparently, three researcher groups independently analyzed permanent eddy current magnets applying the finite element method [60,69,70,[72][73][74]76]. The optimal design of small-scale vertical-axis induction-based [78] and friction-based [66,67] windthermal converters were determined. It is important to note that the windthermal converter shall match the wind turbine's torque-speed characteristic.…”

Section: Technology Maturity Of Windthermal Convertersmentioning

confidence: 99%

“…In most of these applications, a central multimegawatt heat storage is proposed to stabilize the heat supply. The heat can be distributed via district heating or directly used as process heat for different industries, e.g., paper mills [29], greenhouses [26], breweries/distilleries [9], seawater desalination [31], oil fields [28], wine making, cattle farms, and tea processing [78]. Wind-powered thermal energy systems can also supply electricity to the grid when compromising a thermal engine (e.g., an organic Rankine cycle) to generate electricity.…”

Section: Windthermal Application Scenariosmentioning

confidence: 99%

“…They make up to 15% of the total costs and up to 6% of the total weight of wind power converters [101]. In the absence of these requirements and conditions resulting from the use of generators, the following opportunities for windthermal turbines are identified: grid-independent operation [27,39,48], dispensability of gearboxes [54,76,102], operation at a wider range of wind speeds [27,31,38,46,48,53,78,91,102], less noises and fewer vibrations than conventional wind turbines due to lower turbine speeds [54,102], lower costs [9,34,60,102], lower nacelle weight [9,38,76,102], easier maintenance, and smaller breakdown possibility [76,102]. A novel transmission system can tenfold the transmission distance of district heating pipelines [27].…”

Section: Swot Analysis Strengthsmentioning

confidence: 99%

See 4 more Smart Citations

State of the art of windthermal turbines: A systematic scoping review of direct wind-to-heat conversion technologies

Neumeier

Cöster

Pais

et al. 2021

Journal of Energy Resources Technology

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Windthermal turbines convert wind directly into thermal energy. Albeit it is an uncharted field of research, the overall system efficiency and costs of fully developed windthermal turbines are promising; since they can contribute to a sustainable energy transition. We identify the current state of the art of windthermal conversion principles, technology maturity, applications, substitutes, advantages and disadvantages. To scope relevant literature, we follow the Joanna Briggs Institutes selection and screening process resulting in 61 relevant publications from which we identified three main conversion types, namely compression-, friction-, and induction-based windthermal devices. These devices can directly supply thermal energy for space heating or industrial processes, work as a component of wind-powered thermal energy systems, short WTES, or can substitute any conventional or renewable heat device. Although heat is the lowest form of energy, windthermal applications could provide cheap renewable energy that can be stored easily enhancing security of supply. However, these technologies are currently on laboratory-scale, and we suggest scaling up the existing prototypes to engineering-scale. Finally, due to a missing general terminology, we propose to establish one of the terms windthermal energy, ventothermal energy or anemothermal energy to distinguish these specific wind energy conversion technologies.

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Section: Induction-based Windthermal Conversionmentioning

confidence: 99%

Section: Induction-based Windthermal Conversionmentioning

confidence: 99%

Section: Technology Maturity Of Windthermal Convertersmentioning

confidence: 99%

Section: Windthermal Application Scenariosmentioning

confidence: 99%

Section: Swot Analysis Strengthsmentioning

confidence: 99%

See 3 more Smart Citations

State of the art of windthermal turbines: A systematic scoping review of direct wind-to-heat conversion technologies

Neumeier

Cöster

Pais

et al. 2021

Journal of Energy Resources Technology

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Thermal Power Calculation of Interior Permanent Magnet Eddy Current Heater Using Analytical Method

Lu,

Zhang,

Hong

2024

Processes

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This paper presents an interior permanent magnet eddy current heater (IPMECH) that can be driven by wind turbine, which can realize the direct conversion of wind energy to thermal energy. A power analysis method for the IPMECH is proposed. The key to this method is to consider the influence of the skin effect on the distribution of eddy currents based on Coulomb’s law, Maxwell’s equation, and the Lorentz force law. Firstly, the equivalent magnetic circuit model is established, and the mathematical analytical expressions of air gap magnetic flux density (MFD), torque and thermal power of the IPMECH are derived. Then, the air gap MFD, torque and thermal power of the IPMECH are calculated, respectively. Finally, the analytical method (AM) is verified by the finite element method (FEM) and experiments. The results show that the proposed AM is sufficient to calculate the air gap MFD and thermal power of the IPMECH. The AM provides a quick and easy way to optimize and design an IPMECH.

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Research on the Mechanism of Thermal Power Enhancement in an Interior Permanent Magnet Eddy Current Heater Driven by Wind

Lu,

Zhou,

Hong

et al. 2024

Processes

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This article uses numerical simulation methods to study the comprehensive influences of the stator structure and materials on the thermal power of an interior permanent magnet eddy current heater (IPMECH). By analyzing the air-gap magnetic flux density (MFD), stator MFD, thermal power, and torque at different rotational speeds, the mechanism of thermal power enhancement has been revealed in depth. The results indicate that the armature magnetic field (MF) generated by the eddy current produces a magnetization effect on the side of its rotation direction, but the MF in the stator will be weakened in general, and this effect becomes more significant with the increase in the rotational speed. The stator material of the IPMECH has higher permeability, which has higher thermal power and torque, and a lower proportion of high-order harmonics, which is beneficial for reducing the radial vibration of the IPMECH. A permanent magnet with high remanence can increase the thermal power and torque of the IPMECH. Reducing the length of the air gap is beneficial for improving the thermal power, but it also increases the harmonic MFD. The rotational speed is 200 rpm, the air gap is 0.1 mm and 2 mm, and the thermal power is 1.12 kW and 0.35 kW, respectively. The fundamental amplitudes of the 0.1 mm and 2 mm air-gap lengths are 0.94 T and 0.64 T, respectively, and the 3rd harmonic Bi* values are 0.24 and 0.18, respectively. At rotational speeds of 200 rpm, 800 rpm, and 1600 rpm, the δPmax values are 17 mm, 11 mm, and 8 mm, respectively. When designing a heater, the higher the rotational speed, the smaller the stator wall thickness should be.

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Model of Induction Heater on Permanent Magnets Using Wind Energy

Cited by 4 publications

References 4 publications

State of the art of windthermal turbines: A systematic scoping review of direct wind-to-heat conversion technologies

State of the art of windthermal turbines: A systematic scoping review of direct wind-to-heat conversion technologies

Thermal Power Calculation of Interior Permanent Magnet Eddy Current Heater Using Analytical Method

Research on the Mechanism of Thermal Power Enhancement in an Interior Permanent Magnet Eddy Current Heater Driven by Wind

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