Design and optimization of high frequency (250 kHz) planar transformer for micro solar converter application

Ahmad, Muhammad Kamal; Ali, Muhammad Saqib; Majid, Abdul; Saleem, Jawad; Kazmi, Syed Muhammad Raza

doi:10.1109/cpe.2018.8372533

Cited by 2 publications

(6 citation statements)

References 11 publications

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“…Heat generation localized on the skin depth. This effect was commonly used in induction heating of a workpiece [10,11,13,24]. Preferential heating by skin effect.…”

Section: ∆= 2 𝜔𝜇𝛾mentioning

confidence: 99%

“…Where ω, µ, and γ are angular frenquency, permeability, and conductivity. According to Lenz's law, the induced current is always in the opposite direction to the imposed current, which eventually leads to the current in the conductor tending to approach the surface of the conductor [10][11][12]24]. Eddy currents are loops of electrical current within a conductor resulting from a changing magnetic field [24,25].…”

Section: ∆= 2 𝜔𝜇𝛾mentioning

confidence: 99%

“…This effect occurs under high-frequency current (100 kHz) and it was typically used to generate overheating by promoting an interaction between magnetic fields. Eddy currents result in preferential current distribution [11,13,24].…”

Section: ∆= 2 𝜔𝜇𝛾mentioning

confidence: 99%

“…Wheeler et al [10] investigated the skin effect as early as 1942, and he also proposed a mathematical formulation for different configurations and operating frequencies. Ahmad et al [11] analyzed the skin effect in detail by proposing computer models. The proximity effect occurring at high frequency (>100 kHz) with applications in pipe welding was analyzed in Ref.…”

mentioning

confidence: 99%

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Magnetic Field Generated during Electric Current-Assisted Sintering: From Health and Safety Issues to Lorentz Force Effects

Deng

Dong

Boi

et al. 2020

Metals

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In the past decade, a renewed interest on electromagnetic processing of materials has motivated several investigations on the interaction between matter, electric and magnetic fields. These effects are primarily reconducted to the Joule heating and very little attention has been dedicated to the magnetic field contributions. The magnetic field generated during electric current-assisted sintering has not been widely investigated. Magnetism could have significant effects on sintering as it generates significant magnetic forces, resulting in inductive electrical loads and preferential heating induced by overlapping magnetic fields (i.e., proximity effect). This work summarizes the magnetic field effects in electric current-assisted processing; it focuses on health and safety issues associated with large currents (up to 0.4 MA); using FEM simulations, it computes the self-generated magnetic field during spark plasma sintering (SPS) to consolidate materials with variable magnetic permeability; and it quantifies the Lorentz force acting at interparticle contact points. The results encourage one to pay more attention to magnetic field-related effects in order to engineer and exploit their potentials.

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“…Heat generation localized on the skin depth. This effect was commonly used in induction heating of a workpiece [10,11,13,24]. Preferential heating by skin effect.…”

Section: ∆= 2 𝜔𝜇𝛾mentioning

confidence: 99%

Section: ∆= 2 𝜔𝜇𝛾mentioning

confidence: 99%

Section: ∆= 2 𝜔𝜇𝛾mentioning

confidence: 99%

mentioning

confidence: 99%

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Magnetic Field Generated during Electric Current-Assisted Sintering: From Health and Safety Issues to Lorentz Force Effects

Deng

Dong

Boi

et al. 2020

Metals

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“…Similarly to the works mentioned above, which focus only on building physics aspects, the studies assessing electrical architectures for BIPV systems do not consider the building envelope in great detail [22], [23]. The development and simulation of power electronic models such as micro-inverters and -converters are often implemented in tools such as MATLAB-Simulink [24], [25] , ANSYS [26] or Spice [27]. Power converters are necessary to transform the PV power output from DC to AC or to condition it to a stable DC voltage level, allowing thus a safe connection to the grid.…”

Section: Background and Motivationmentioning

confidence: 99%

Modeling and validation of a DC/DC power converter for building energy simulations: Application to BIPV systems

et al. 2019

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European legislation on building performance and energy efficiency pushes the shift towards minimizing the environmental footprint of buildings. Buildingintegrated photovoltaics (BIPV) is a promising technology that can accelerate the transition to energy-neutral buildings. Quantifying the potential of BIPV is crucial and one means of obtaining those results is through simulation. The state-of-the-art tools offer either thermal or electrical specialization; in particular, balance of system components (BOS) such as power converters have not been studied in detail within the building simulations BIPV domain. In this paper, a multi-physics model of a BIPV integrated DC/DC converter is developed in the Modelica language, taking into account the thermal and electrical couplings inherent to power electronic systems. The model has been validated using representative outdoor BIPV measurements and a DC/DC converter prototype. It has been found that the proposed model provides reasonable accuracy and outperforms an equivalent power conditioning model in TRNSYS. To demonstrate the model's functionality, two case studies are performed. First, the temperature-dependence of the converter's efficiency and losses is quantified and analyzed and, second, the prominent contributors to the converter losses are identified and discussed.

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Design and optimization of high frequency (250 kHz) planar transformer for micro solar converter application

Cited by 2 publications

References 11 publications

Magnetic Field Generated during Electric Current-Assisted Sintering: From Health and Safety Issues to Lorentz Force Effects

Magnetic Field Generated during Electric Current-Assisted Sintering: From Health and Safety Issues to Lorentz Force Effects

Modeling and validation of a DC/DC power converter for building energy simulations: Application to BIPV systems

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