Steady state analysis of a capacitively coupled contactless power transfer system

Liu, Chao; Hu, Aiguo Patrick

doi:10.1109/ecce.2009.5316216

Cited by 31 publications

(4 citation statements)

References 8 publications

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“…Unlike other wireless energy transmission methods implemented on the basis of coaxial cables, this method places two synchronous permanent magnets side-by-side and uses the magnetic gear as the hub for wireless energy transmission. The main power supply to the transmitter winding becomes current [5] and generates a mechanical torque on the primary synchronous permanent magnets. Under the action of the mechanical torque, the primary permanent magnet is rotated and through mechanical interaction, torque is also generated on the secondary permanent magnet.…”

Section: Magnetic Gear Wireless Power Transfermentioning

confidence: 99%

A review of electric vehicle wireless charging technology research

Zheng

2023

ACE

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With an increasing focus on environmental protection and sustainability, electric vehicles have become the mainstream trend for future automotive development. However, the development of electric vehicles has been limited by the bottleneck of charging technology. As a result, wireless charging technology for electric vehicles is viewed as an important solution, featuring high efficiency, high power density, and low cost. Specifically, three-phase wireless charging technology offers superior advantages such as high power density, low magnetic field leakage, and high coupling tolerance, making it the major trend for future development. This paper provides an overview of wireless charging technology for electric vehicles, while highlighting the benefits of three-phase technology over single-phase alternatives.

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Section: Magnetic Gear Wireless Power Transfermentioning

confidence: 99%

A review of electric vehicle wireless charging technology research

Zheng

2023

ACE

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“…It used electric field as transfer interface which has the ability to penetrate through metal shielding environment [6][7][8]. Besides, it has good anti-interference ability of magnetic field [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Load and Coupling Variations Analysis of Capacitive Power Transfer at 6.78MHz Operating Frequency for Biomedical Implantable Device

Meor,

Yusop,

Saat

et al. 2023

Elektrika

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This paper presents the design and analysis of load and coupling variations for a current Wireless Power Transfer (WPT) technique, known as Capacitive Power Transfer (CPT). Due to its strength, CPT becomes an effective and essential alternative to conservative technique, which is Inductive Power Transfer (IPT). It can compete IPT in industrial demand since it has a small number of component usage, uncomplicated topology, increases electromagnetic interference (EMI) shielding performance and robust to surrounding metallic elements. Class E power amplifier with the presence of π1b matching resonant circuit is applied in this work as a high frequency ac power source since it has the ability to perform dc-to-ac inversion efficiently. It supports the CPT system to attain a maximum power transmission. MATLAB software is used to design and simulate the CPT circuit; and the analysis is made up from the results. This proposed system able to generate 1W of output power by maintaining up to 98% efficiency at 6.78MHz operating frequency for Biomedical Implantable Device application. The analysis of load variation is in the range of 50Ω until 1kΩ; meanwhile for coupling variation is between 1mm to 15mm.

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“…Inductive energy transfer systems utilize the magnetic field around a current carrying wire at very low frequencies to wirelessly couple one or more secondary systems [10]. A capacitive energy transfer system is another way to develop CET systems, which employs electric field rather than magnetic field [11,12]. Due to the nature of the electric field coupling, capacitive energy transfer has the potential to penetrate through metal barriers and to reduce power losses as well as electromagnetic interference [12].…”

Section: Introductionmentioning

confidence: 99%

“…A capacitive energy transfer system is another way to develop CET systems, which employs electric field rather than magnetic field [11,12]. Due to the nature of the electric field coupling, capacitive energy transfer has the potential to penetrate through metal barriers and to reduce power losses as well as electromagnetic interference [12].…”

Section: Introductionmentioning

confidence: 99%

Contactless and selective energy transfer to a bistable micro-actuator using laser heated shape memory alloy

Zaidi¹,

Lamarque²,

Prelle³

et al. 2012

Smart Mater. Struct.

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Contactless energy transfer (CET) methods offer great flexibility in the design of complex micro-systems. This paper reports a laser based contactless and selective energy transfer method. A compliant bistable micro-actuator (curved beam of size 25 mm × 1.5 mm × 0.508 mm) is actuated between its two stable positions using the laser heated shape memory alloy (SMA) active elements (size: 3 mm × 1 mm × 0.1 mm). The switching time of the actuator turns out to be 0.5 s for d 0 equal to 700 µm and a laser power of 90 mW (d 0 is half of the total stroke length). The paper also demonstrates the selective energy transfer technique to the SMA active elements by depositing silver based optical filters directly onto the SMA active elements. A successful demonstration is presented for four wavelengths, 532, 660, 785, and 980 nm, using different values of d 0 for the bistable micro-actuator. Finally, a long-term test is performed to highlight the thermo-mechanical effect on the selective addressing capability of the optical filters.

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Steady state analysis of a capacitively coupled contactless power transfer system

Cited by 31 publications

References 8 publications

A review of electric vehicle wireless charging technology research

A review of electric vehicle wireless charging technology research

Load and Coupling Variations Analysis of Capacitive Power Transfer at 6.78MHz Operating Frequency for Biomedical Implantable Device

Contactless and selective energy transfer to a bistable micro-actuator using laser heated shape memory alloy

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