Searched for: subject%3A%22Inductive%255C+power%255C+transfer%22
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Manur, Suraj (author)
The integration of renewable energy systems into the grid brings new and unique propositions involving the integration of power electronic inverter based solutions into the High Voltage (HV) grid. Thus a need arises to test the HV components with unconventional waveforms which can be satisfied by the Arbitrary Waveshape Generator (AWG). Two such...
master thesis 2023
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Grazian, F. (author)
Wireless charging has the potential to speed up the transition to electric vehicles (EVs) because it is intrinsically a user-friendly technology. Furthermore, it is essential when charging completely autonomous EVs, and it enables the charging of EVs in motion without using overhead cables. The most common technology used in EV wireless charging...
doctoral thesis 2023
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Grazian, F. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
Light-duty electric vehicles (EVs) typically have a rated voltage of either 400 or 800 V. Especially when considering public parking infrastructures or owners with multiple EVs, e.g., car rental companies, EV wireless chargers must efficiently deliver electric power to both battery options. For this purpose, this article proposes an advanced...
journal article 2023
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Grazian, F. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
The lithium-ion battery of an electric vehicle (EV) is typically rated at either 400 or 800 V. When considering public parking infrastructures, EV wireless chargers must efficiently deliver electric power to both battery options. This can be normally achieved by regulating the output voltage through a dc-dc converter at the cost of higher...
journal article 2023
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de la Garza Cuevas, César (author)
Wireless charging technology, in particular, Inductive Power Transfer (IPT), has been evolving during the last decades, and it’s starting to become attractive for electric mobility applications. The working principle of the IPT technology is based on two coils separated by an air gap and magnetically coupled together; since the medium to...
master thesis 2022
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Shi, W. (author), Dong, J. (author), Soeiro, Thiago B. (author), Deng, Junjun (author), Riekerk, C. (author), Bauer, P. (author)
Resonant circuits are commonly used in inductive power transfer (IPT) systems for the charging of electric vehicles because of the high power efficiency. Transient behaviors of the resonant circuits, which play a significant role in the design and analysis of IPT systems, are cumbersome to model analytically because of the high-order. This...
journal article 2022
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Grazian, F. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
Wireless charging must be highly efficient throughout the entire battery charging profile to compete in the electric vehicle (EV) industry. Thus, optimum load matching is commonly used: it operates at the equivalent load that maximizes the efficiency, which depends on the coil's alignment. In this article, the optimum load is made independent...
journal article 2022
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Grazian, F. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
Nowadays, inductive power transfer (IPT) with magnetic resonance is the most used method for high-power wireless battery charging applications. Once the topology of the compensation network and the operating frequency are selected, there are infinite combinations of the circuit equivalent inductance and compensation capacitance values resonating...
conference paper 2022
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Grazian, F. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
This paper investigates the interoperability of the proposed voltage/current doubler (V/I-D) converter used for wireless charging of electric vehicles (EVs), which achieves high efficiency when charging both 400V and 800V batteries at the same power. Nominally, the V/I-D converter employs bipolar pads (BPP) at both the primary and the secondary...
conference paper 2022
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Shi, W. (author), Dong, J. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
One of the challenges with the dynamic inductive power transfer (DIPT) technique is the electric vehicle detection (EVD) that helps the DIPT system to control the power supply of the transmitter. The EVD method applying auxiliary coils is a promising candidate because the flat shape of the auxiliary coils is suitable for the compact design....
journal article 2021
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Grazian, F. (author), Soeiro, Thiago B. (author), van Duijsen, P.J. (author), Bauer, P. (author)
In wireless charging systems, the H-bridge converter's switching frequency is set close to the system's natural resonance for achieving optimized zero voltage switching (ZVS). Variations to the system's natural resonance are commonly tracked by following the changes in the resonant current's polarity, i.e., current zero-crossings. The main...
journal article 2021
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Riekerk, C. (author), Grazian, F. (author), Soeiro, Thiago B. (author), Dong, J. (author), Bauer, P. (author)
The increase in popularity of electric vehicles (EVs) and the pursuit of user convenience makes wireless power transfer (WPT) an attractive technology for the charging of batteries. The usage of WPT in e-transportation is not straightforward because the current standardization limits the allowed operating frequency range and magnitude of the...
conference paper 2021
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Shi, W. (author), Grazian, F. (author), Bandyopadhyay, S. (author), Dong, J. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
This paper aims to investigate the dynamic charging performance of an 11 kW dynamic inductive power transfer (DIPT) system. First, a multi-objective optimization (MOO) method is proposed to find the Pareto front of the DD charging pad. Then, the optimal design with a 96.82% efficiency is selected as the target design for the DIPT system....
conference paper 2021
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Grazian, F. (author), van Duijsen, P.J. (author), Roodenburg, B. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
In inductive power transfer applications that use resonant compensation networks, the commonly employed H-bridge inverter should be kept operating in soft-switching to ensure high power efficiency and low irradiated electromagnetic noise. To achieve so, the zero-crossing detection circuit for the resonant current or voltage must be fast and...
conference paper 2020
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Shi, W. (author), Grazian, F. (author), Dong, J. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
This paper proposes a new method of electric vehicles detection (EVD) and foreign objects detection (FOD) for dynamic inductive power transfer (DIPT) systems. The proposed detection method applies both passive coil sets (PCSs) and active coil sets (ACSs) to achieve both EVD and FOD with a high detection sensitivity. The operation mechanisms...
conference paper 2020
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Grazian, F. (author), Shi, W. (author), Soeiro, Thiago B. (author), Dong, J. (author), Bauer, P. (author)
In inductive power transfer applications, it is possible to ensure high efficiency of the main coils by operating at the optimum load. Since the optimum load depends on the coupling between the main coils, the operation needs to be adapted to match this case at different alignment conditions. This paper proposes a method to keep the optimum load...
conference paper 2020
document
Shi, W. (author), Grazian, F. (author), Dong, J. (author), Soeiro, Thiago B. (author), Bauer, P. (author)
This paper aims to investigate the radiated magnetic field by 11 kW inductive power transfer (IPT) systems used for the charging of electric vehicles. Two reference designs suggested by SAE J2954 are studied. Both designs are analysed to obtain the coils winding currents, and 3D FEM models are built in COMSOL without considering the car chassis,...
conference paper 2020
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Grazian, F. (author), Shi, W. (author), Soeiro, Thiago B. (author), Dong, J. (author), van Duijsen, P.J. (author), Bauer, P. (author)
Industrial wireless charging systems use standardized coils to guarantee interoperability between different manufacturers. In combination with these coils, the compensation network can still be designed and optimized. This paper explains the step-by-step design of the compensation network for a 7.7 kW wireless charging system (power class WPT2),...
conference paper 2020
document
Vermeer, W.W.M. (author), Bandyopadhyay, S. (author), Bauer, P. (author)
Since the power transfer efficiency in inductive power transfer (IPT) systems is directly related to the coupling of the transformer, coil misalignment can drastically decrease the efficiency. In this paper a misalignment tolerant control scheme is proposed which tracks the maximum power transfer efficiency point under misalignment. It does this...
conference paper 2020
document
Grazian, F. (author), Shi, W. (author), Soeiro, Thiago B. (author), Dong, J. (author), van Duijsen, P.J. (author), Bauer, P. (author)
In high-power wireless battery charging that uses inductive power transfer, a considerable amount of power losses are located in the transmitter and receiver coils because they carry high resonant currents and typically have a loose coupling between them which increases eddy current losses. Therefore, the nominal operation needs to be chosen...
conference paper 2020
Searched for: subject%3A%22Inductive%255C+power%255C+transfer%22
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