The Experts below are selected from a list of 9084 Experts worldwide ranked by ideXlab platform
M Feliziani - One of the best experts on this subject based on the ideXlab platform.
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magnetic field mitigation by multiCoil Active shielding in electric vehicles equipped with wireless power charging system
IEEE Transactions on Electromagnetic Compatibility, 2020Co-Authors: Tommaso Campi, Silvano Cruciani, F Maradei, M FelizianiAbstract:A novel design of Active Coil shielding is proposed to reduce the magnetic field generated by the currents flowing into the Coils of a wireless power transfer (WPT) system for charging the batteries of an electric vehicle (EV). The main idea is to divide the traditional Active loop used to shield a source in two separate shielding Coils so as not to adversely affect the WPT performance. This concept is applied to shield the WPT Coils, and, therefore, in the proposed design, there are Active Coils placed on the ground parallel to the primary Coil of the WPT and some others on board below the vehicle, planarly located with the secondary Coil. The currents on the Active Coils are optimized in order to minimize the magnetic field in the most critical zone accessible from humans, i.e., region besides the EV and in the cabin.
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Active Coil system for magnetic field reduction in an automotive wireless power transfer system
International Symposium on Electromagnetic Compatibility, 2019Co-Authors: Tommaso Campi, Silvano Cruciani, F Maradei, M FelizianiAbstract:A novel design of Active Coils is proposed to reduce the magnetic field generated by the currents flowing into the Coils of a wireless power transfer (WPT) system for recharging the batteries of an electric vehicle (EV). The main idea is to split the traditional Active loop, in two separate shielding Coils. They have semi-annular shape and are placed on the ground pad around the WPT primary Coil. The geometry and excitation of the Active Coils are varied to minimize the magnetic field beside the Active Coils without degrading the WPT electrical performance.
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wireless charging in electric vehicles emi emc risk mitigation in pacemakers by Active Coils
IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer, 2019Co-Authors: Silvano Cruciani, Tommaso Campi, F Maradei, M FelizianiAbstract:An innovative shielding configuration of Active Coils is proposed to mitigate the magnetic field around an electric vehicle (EV) with a wireless power transfer (WPT) system during battery charging. The Active Coil is designed to reduce the risk for patients with pacemakers or similar devices produced by the time varying magnetic field generated by the 85 kHz WPT Coil currents. A numerical analysis of the magnetic field levels is carried out solving the magneto-quasi-static (MQS) equations by a FEM-based commercial tool. The calculated field which exceeds the limits of electromagnetic compatibility (EMC) and electromagnetic field (EMF) safety standards for human exposure is mitigated by Active Coils. The magnetic field levels in the environment and the induced peak-to-peak voltage in the pacing lead is predicted in presence and in absence of Active shielding.
Shi W. - One of the best experts on this subject based on the ideXlab platform.
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Integrated Solution for Electric Vehicle and Foreign Object Detection in the Application of Dynamic Inductive Power Transfer
'Institute of Electrical and Electronics Engineers (IEEE)', 2021Co-Authors: Shi W., Dong J., Soeiro, Thiago B., Bauer P.Abstract: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. However, the EVD may fail when the metallic foreign object (MFO) is present. Therefore, the desire emerges in the integration design of the EVD and foreign object detection (FOD). The FOD can ensure the reliability of the EVD as well as the highly efficient operation of the DIPT system without MFOs. In this context, this paper proposes an integrated solution to the EVD and FOD well suited for DIPT systems. The integrated solution utilizes both passive Coil sets (PCSs) and Active Coil sets (ACSs). Additionally, a novel detection resonant circuit (DRC) is proposed to realize EVD and FOD using the same Coil sets and to amplify the measurement sensitivity. The operation mechanisms, the detection Coil sets architecture, the design of the proposed resonant circuits and the detection procedure are detailed. Finally, a printed circuit board based prototype is built to validate the integrated functionality of the EVD and FOD in a DIPT prototype processing 1 kW output. Experiments considering the practical DIPT application scenarios are conducted, and the proposed detection method is able to achieve advantageously high sensitivity and no blind zone.DC systems, Energy conversion & Storag
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Detection of Metallic Foreign Objects and Electric Vehicles Using Auxiliary Coil Sets for Dynamic Inductive Power Transfer Systems
'Institute of Electrical and Electronics Engineers (IEEE)', 2020Co-Authors: Shi W., Thiago Batista Soeiro, Grazia F., Dong J., Aue P.Abstract: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 and design of the detection Coil sets topology and resonant circuits are elaborated. Finally, both circuit and magnetic field simulation are carried out. The results verify the feasibility and sensitivity of the proposed detection method.Virtual/online event due to COVID-19 Accepted author manuscriptDC systems, Energy conversion & Storag
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Detection of Metallic Foreign Objects and Electric Vehicles Using Auxiliary Coil Sets for Dynamic Inductive Power Transfer Systems
'Institute of Electrical and Electronics Engineers (IEEE)', 2020Co-Authors: Shi W., Dong J., Grazian F., Soeiro, Thiago B., Bauer P.Abstract: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 and design of the detection Coil sets topology and resonant circuits are elaborated. Finally, both circuit and magnetic field simulation are carried out. The results verify the feasibility and sensitivity of the proposed detection method.Virtual/online event due to COVID-19 Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.DC systems, Energy conversion & Storag
Bauer P. - One of the best experts on this subject based on the ideXlab platform.
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Integrated Solution for Electric Vehicle and Foreign Object Detection in the Application of Dynamic Inductive Power Transfer
'Institute of Electrical and Electronics Engineers (IEEE)', 2021Co-Authors: Shi W., Dong J., Soeiro, Thiago B., Bauer P.Abstract: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. However, the EVD may fail when the metallic foreign object (MFO) is present. Therefore, the desire emerges in the integration design of the EVD and foreign object detection (FOD). The FOD can ensure the reliability of the EVD as well as the highly efficient operation of the DIPT system without MFOs. In this context, this paper proposes an integrated solution to the EVD and FOD well suited for DIPT systems. The integrated solution utilizes both passive Coil sets (PCSs) and Active Coil sets (ACSs). Additionally, a novel detection resonant circuit (DRC) is proposed to realize EVD and FOD using the same Coil sets and to amplify the measurement sensitivity. The operation mechanisms, the detection Coil sets architecture, the design of the proposed resonant circuits and the detection procedure are detailed. Finally, a printed circuit board based prototype is built to validate the integrated functionality of the EVD and FOD in a DIPT prototype processing 1 kW output. Experiments considering the practical DIPT application scenarios are conducted, and the proposed detection method is able to achieve advantageously high sensitivity and no blind zone.DC systems, Energy conversion & Storag
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Detection of Metallic Foreign Objects and Electric Vehicles Using Auxiliary Coil Sets for Dynamic Inductive Power Transfer Systems
'Institute of Electrical and Electronics Engineers (IEEE)', 2020Co-Authors: Shi W., Dong J., Grazian F., Soeiro, Thiago B., Bauer P.Abstract: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 and design of the detection Coil sets topology and resonant circuits are elaborated. Finally, both circuit and magnetic field simulation are carried out. The results verify the feasibility and sensitivity of the proposed detection method.Virtual/online event due to COVID-19 Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.DC systems, Energy conversion & Storag
Tommaso Campi - One of the best experts on this subject based on the ideXlab platform.
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magnetic field mitigation by multiCoil Active shielding in electric vehicles equipped with wireless power charging system
IEEE Transactions on Electromagnetic Compatibility, 2020Co-Authors: Tommaso Campi, Silvano Cruciani, F Maradei, M FelizianiAbstract:A novel design of Active Coil shielding is proposed to reduce the magnetic field generated by the currents flowing into the Coils of a wireless power transfer (WPT) system for charging the batteries of an electric vehicle (EV). The main idea is to divide the traditional Active loop used to shield a source in two separate shielding Coils so as not to adversely affect the WPT performance. This concept is applied to shield the WPT Coils, and, therefore, in the proposed design, there are Active Coils placed on the ground parallel to the primary Coil of the WPT and some others on board below the vehicle, planarly located with the secondary Coil. The currents on the Active Coils are optimized in order to minimize the magnetic field in the most critical zone accessible from humans, i.e., region besides the EV and in the cabin.
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Active Coil system for magnetic field reduction in an automotive wireless power transfer system
International Symposium on Electromagnetic Compatibility, 2019Co-Authors: Tommaso Campi, Silvano Cruciani, F Maradei, M FelizianiAbstract:A novel design of Active Coils is proposed to reduce the magnetic field generated by the currents flowing into the Coils of a wireless power transfer (WPT) system for recharging the batteries of an electric vehicle (EV). The main idea is to split the traditional Active loop, in two separate shielding Coils. They have semi-annular shape and are placed on the ground pad around the WPT primary Coil. The geometry and excitation of the Active Coils are varied to minimize the magnetic field beside the Active Coils without degrading the WPT electrical performance.
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wireless charging in electric vehicles emi emc risk mitigation in pacemakers by Active Coils
IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer, 2019Co-Authors: Silvano Cruciani, Tommaso Campi, F Maradei, M FelizianiAbstract:An innovative shielding configuration of Active Coils is proposed to mitigate the magnetic field around an electric vehicle (EV) with a wireless power transfer (WPT) system during battery charging. The Active Coil is designed to reduce the risk for patients with pacemakers or similar devices produced by the time varying magnetic field generated by the 85 kHz WPT Coil currents. A numerical analysis of the magnetic field levels is carried out solving the magneto-quasi-static (MQS) equations by a FEM-based commercial tool. The calculated field which exceeds the limits of electromagnetic compatibility (EMC) and electromagnetic field (EMF) safety standards for human exposure is mitigated by Active Coils. The magnetic field levels in the environment and the induced peak-to-peak voltage in the pacing lead is predicted in presence and in absence of Active shielding.
Mitsuru Ueda - One of the best experts on this subject based on the ideXlab platform.
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living anionic polymerization of 4 vinyltriphenylamine for synthesis of novel block copolymers containing low polydisperse poly 4 vinyltriphenylamine and regioregular poly 3 hexylthiophene segments
Macromolecules, 2009Co-Authors: Tomoya Higashihara, Mitsuru UedaAbstract:We have developed a living anionic polymerization of 4-vinyltriphenylamine (VTPA) in tert-butylbenzene at 25 °C or tetrahydrofuran at −78 °C initiated with sec-butyllithium in the absence of any additives based on a high-vacuum (10−6 Torr) technique. Lithium naphthalenide could also initiate the polymerization of VTPA to generate difunctional living PVTPA. The molecular weights of poly(VTPA) (PVTPA) were proportionally increased up to around 30 K by increasing the feed ratio of VTPA to the initiator, while keeping very low polydispersities (PDIs) of less than 1.1. A new series of block copolymers, PVTPA-b-poly(methyl methacrylate) and polystyrene (PS)-b-PVTPA-b-PS, have been successfully synthesized by exploiting the living nature of PVTPA. We were also successful in synthesizing novel and optoelectrically Active Coil−rod−Coil triblock copolymers comprised of regioregular poly(3-hexylthiophene) (P3HT) and PVTPA segments. Their characterization as well as thermal and optical properties have been investigat...
