Inductive &amp; Capacitive Wireless Power Transfer System

Mazli, Mohamad Syafiq; Fauzi, Wan Noor Nadira Wan; Khan, Sheroz; Aznan, Khairil Azhar; Nataraj, Chandrasekharan; Adam, Ismahayati; Kadir, Kushsairy; Musse, Mohamud Ahmed; Yaacob, Mashkuri

doi:10.1109/iccce.2018.8539263

Cited by 3 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A schematic block representation of a CWPT system is shown in Figure 1. The architecture is similar to an IWPT system [14,15], but coupling among the primary and secondary sides is based on the electric field, rather than the magnetic field. A primary inverter impresses a highfrequency alternative voltage to the transmission circuit.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Zero Voltage Switching Condition in Class-E Inverter for Capacitive Wireless Power Transfer Applications

Corti

Reatti

et al. 2021

Energies

View full text Add to dashboard Cite

This paper presents a complete design methodology of a Class-E inverter for capacitive wireless power transfer (CWPT) applications, focusing on the capacitance coupling influence. The CWPT has been investigated in this paper, because most of the literature refers to inductive power transfer (IWPT). However, CWPT in perspective can result in lower cost and higher reliability than IWPT, because it does not need coils and related shields. The Class-E inverter has been selected, because it is a single switch inverter with a grounded MOSFET source terminal, and this leads to low costs and a simple control strategy. The presented design procedure ensures both zero voltage switching (ZVS) and zero derivative switching (ZDS) conditions at an optimum coupling coefficient, thus enabling a high transmission and conversion efficiency. The novelties of the proposed method are that the output power is boosted higher than in previous papers available in the literature, the inverter is operated at a high conversion efficiency, and the equivalent impedance of the capacitive wireless power transfer circuit to operate in resonance is exploited. The power and the efficiency have been increased by operating the inverter at 100 kHz so that turn-off losses, as well as losses in inductor and capacitors, are reduced. The closed-form expressions for all the Class-E inverter voltage and currents waveforms are derived, and this allows for the understanding of the effects of the coupling coefficient variations on ZVS and ZDS conditions. The analytical estimations are validated through several LTSpice simulations and experimental results. The converter circuit, used for the proposed analysis, has been designed and simulated, and a laboratory prototype has been experimentally tested. The experimental prototype can transfer 83.5 W at optimal capacitive coupling with operating at 100 kHz featuring 92.5% of the efficiency, confirming that theoretical and simulation results are in good agreement with the experimental tests.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Lower cost: CWPT does not need expensive magnetic cores and Litz wires to reduce the parasitic resistance due to skin and proximity effects [15,16]. The power is transferred through low-cost metallic plates.…”

mentioning

confidence: 99%

Zero Voltage Switching Condition in Class-E Inverter for Capacitive Wireless Power Transfer Applications

Corti

Reatti

et al. 2021

Energies

View full text Add to dashboard Cite

show abstract

Near-Field Wireless Power Transfer Technology for Unmanned Aerial Vehicles: A Systematical Review

Mou

Gladwin

Jiang

et al. 2023

IEEE J. Emerg. Sel. Top. Ind. Electron.

View full text Add to dashboard Cite

Unmanned Aerial Vehicles (UAVs) technology has seen a significant boost in the past ten years and has been widely adopted in entertainment, rescue, intelligent transportation, notouch delivery, environmental monitoring and other real world applications. However, the ranging limitation due to the shortage of battery energy capacity remains a major issue hindering further development of UAVs. Wireless power transfer (WPT) technology is a new technology of great potentials in improving the endurance of UAVs. The integration of WPT into UAV not only activates the recharging of UAVs batteries, but also enables UAVs to recharge other devices. Moreover, wireless charging technology allows the device to be fully enclosed and suitable for harsh weather conditions. This paper presents a comprehensive review in regard to the state-of-the-art of nearfield WPT technologies for UAV charging, including technologies characteristics, design issues, as well as multiple case studies. A comparative analysis of existing technologies are also presented, associated with key future research discussions of WPT for UAVs.

show abstract

Unified Theory of Series, Parallel and LCL/CLC Resonant Circuits in Inductive Power Transfer and Capacitive Power Transfer

Namiki,

Imura,

Hori

2024

IEEJ Journal IA

View full text Add to dashboard Cite

This paper provides a general and systematic comparison of the transmission characteristics of series, parallel and LCL/CLC resonant circuits of both Inductive Power Transfer (IPT) and Capacitive Power Transfer (CPT) . The transmission characteristics are CC/CV characteristic, efficiency, and output power when the power source is a voltage source or a current source. In terms of maximum efficiency, it was found to be common regardless of the transmission method or circuit. In terms of output power, it was found that when using a voltage source, high power was obtained by setting the transmitter side to S in IPT and the transmitter side to S or CLC in CPT. It was also found that when using a current source, high power was obtained by setting the transmitter side to P or LCL in IPT and the transmitter side to P in CPT. Furthermore, it was found that IPT obtains high power when the transmitter side circuit has the CV characteristic and CPT obtains high power when the transmitter side circuit has CC characteristic.

show abstract

Inductive & Capacitive Wireless Power Transfer System

Cited by 3 publications

References 10 publications

Zero Voltage Switching Condition in Class-E Inverter for Capacitive Wireless Power Transfer Applications

Zero Voltage Switching Condition in Class-E Inverter for Capacitive Wireless Power Transfer Applications

Near-Field Wireless Power Transfer Technology for Unmanned Aerial Vehicles: A Systematical Review

Unified Theory of Series, Parallel and LCL/CLC Resonant Circuits in Inductive Power Transfer and Capacitive Power Transfer

Contact Info

Product

Resources

About