Proceedings ArticleDOI
Modeling of magnetic flux in multi-winding toroidal core high frequency transformers using 3D reluctance network model
Mohammad Jafari,Zahra Malekjamshidi,Md. Rabiul Islam,Jianguo Zhu +3 more
- pp 413-418
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TLDR
In this paper, a 3D reluctance network is introduced for modelling of magnetic flux distribution and estimation of self and leakage inductances of multi-winding toroidal core high frequency transformer, and the effective factors on accuracy of model and computation time are studied and the results are compared with experimentally measured parameters to verify the accuracy.Abstract:
Multi-winding transformers as main part of multiport phase shift converters play an important role in integration of renewable energy sources, storage device and loads. The range of power transfer in multi-port phase shift converters particularly depends on the leakage inductance of multi-winding transformer. Numerical analysis such as 2D and 3D finite element methods have been widely used in analysis of magnetic structures and estimation of leakage inductance although their computation time is the main issue especially in online and iterative design processes. In this paper, a 3D reluctance network is introduced for modelling of magnetic flux distribution and estimation of self and leakage inductances of multi-winding toroidal core high frequency transformer. The proposed network is formed in cylindrical coordination, according to the geometrical shape of toroidal core. The effective factors on accuracy of model and computation time are studied and the results are compared with experimentally measured parameters to verify the accuracy of model.read more
Citations
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A pwm plus phase-shift control bidirectional dc/dc converter
TL;DR: In this paper, a PWM plus phase-shift control bidirectional DC/DC converter is proposed, which combines PWM control and phase shift control to reduce current stress and both conducting and switching loss.
Proceedings ArticleDOI
Power flow control and ZVS analysis of three limb high frequency transformer based three-port DAB
TL;DR: In this paper, power characterization for independent power flow of three-port DAB using modulation control, and ZVS scenario study under the modulation control have been realized and experimental results have been obtained for 500V dc input voltages and 1000V dc output voltage at 8.2kW of power.
Proceedings ArticleDOI
Technical issues of sizing Lead-Acid batteries for application in residential renewable energy systems
TL;DR: In this article, the procedure of calculating required capacity of lead acid battery for a residential based renewable energy system is explained, where the basic required stored energy is defined using averaged load energy demand and renewable energy generation profiles.
Proceedings ArticleDOI
Decoupled power flow using phase shift control and ZVS cases for a three limb high frequency transformer based three-port DAB integrating PV and energy storage
TL;DR: The work presented in this paper focuses on the decoupled power flow control using phase shift control technique and resulting ZVS scenarios for three-limb high frequency transformer enabled three port Dual Active Bridge(DAB) converter, integrating PV and Energy Storage(ES).
Proceedings ArticleDOI
A Medium Frequency Transformer Design Tool with Methodologies Adapted to Various Structures
TL;DR: A comprehensive and generic medium frequency transformer (MFT) design methodology is presented, which can be applied to many transformer structures, and can give insights on the best technological choices to be used for MFTs, and also shows significant differences in performance between structures.
References
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Journal ArticleDOI
Transformer-Coupled Multiport ZVS Bidirectional DC–DC Converter With Wide Input Range
TL;DR: In this article, a duty ratio control method is proposed to extend the ZVS operating range when input voltages vary widely, and the three-port dc-dc converters are implemented and tested for a fuel cell and supercapacitor system.
Journal ArticleDOI
A PWM plus phase-shift control bidirectional DC-DC converter
TL;DR: In this article, a pulsewidth modulation (PWM) plus phase-shift control bidirectional dc-dc converter is proposed to reduce current stress and conduction losses, and to expand ZVS range.
Journal ArticleDOI
An Improved Magnetic Equivalent Circuit Model for Iron-Core Linear Permanent-Magnet Synchronous Motors
TL;DR: In this article, an improved magnetic equivalent circuit for calculation of the teeth and yoke flux densities in linear permanent-magnet synchronous motors (LPMSMs) is presented, where the magnetic saturation of iron core is considered by nonlinear elements and an iterative procedure is used to update these elements.
Journal ArticleDOI
3-D Magnetic Equivalent Circuit Framework for Modeling Electromechanical Devices
Marco Amrhein,Philip T. Krein +1 more
TL;DR: In this paper, the authors present a 3D MEC modeling approach based on a variable-sized reluctance network distribution for force calculation and modeling of moving objects, and two experimental case studies, a soft-ferrite inductor and an induction machine, are presented.
A pwm plus phase-shift control bidirectional dc/dc converter
TL;DR: In this paper, a PWM plus phase-shift control bidirectional DC/DC converter is proposed, which combines PWM control and phase shift control to reduce current stress and both conducting and switching loss.