Study on efficiency of different topologies of magnetic coupled resonant wireless charging system

Cui, Shujie; Liu, Zhen Zhen; Hou, Yanjin; Zeng, Hao; Yue, Zhou; Liang, Likai

doi:10.1088/1755-1315/93/1/012064

Cited by 13 publications

(8 citation statements)

References 1 publication

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“…Depending on the LC connection for both the transmitter and the receiver, four major topologies may be obtained: Series‐series (S/S), series‐parallel (S/P), parallel‐series (P/S), and parallel‐parallel (P/P) compensated systems. Each type of circuit topology has advantages and disadvantages in the WPT system [73, 74].…”

Section: Basic Topologies Of Wireless Power Transfer Systemsmentioning

confidence: 99%

“…Likewise, for the S/S and P/S topologies, the current passes through the coil and the load is consistent. In contrast, for S/P and P/P, there is a difference between the currents [74, 81].…”

Section: Basic Topologies Of Wireless Power Transfer Systemsmentioning

confidence: 99%

“…and parallel-parallel (P/P) compensated systems. Each type of circuit topology has advantages and disadvantages in the WPT system [73,74].…”

Section: Basic Topologies Of Wireless Power Transfer Systemsmentioning

confidence: 99%

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Near‐field wireless power transfer used in biomedical implants: A comprehensive review

Mahmood

Gharghan

Soliman

2022

IET Power Electronics

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Wireless power transfer (WPT) techniques have been utilized in various biomedical applications to overcome the challenges of battery capacity and lifetime, and high-cost surgical interventions, using biomedical implants (BMIs) and biomedical sensors (BMSs), including deep brain stimulators, capsule endoscopes, pacemakers, and cardiac monitoring sensors. In this article, near-field WPT methods in BMIs and BMSs, including magnetic resonator coupling (MRC), inductive coupling (IC), and capacitive coupling (CC), are reviewed, and some biomedical applications of these methods are highlighted. The applications of WPT have been explored in recent years to enhance the major performance metrics of BMIs. The main topologies of MRC-WPT are presented, and the main mathematical models related to each type were extracted from previous studies and detailed here. Additionally, the main performance metrics and results achieved, along with their suggested biomedical applications, are summarized in a comparison table. Some challenges and limitations of using WPT in the biomedical field and suggestions for improving the efficiency of WPT for biomedical applications are also discussed. Furthermore, future trends in WPT-based BMIs are also highlighted.

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Section: Basic Topologies Of Wireless Power Transfer Systemsmentioning

confidence: 99%

Section: Basic Topologies Of Wireless Power Transfer Systemsmentioning

confidence: 99%

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Near‐field wireless power transfer used in biomedical implants: A comprehensive review

Mahmood

Gharghan

Soliman

2022

IET Power Electronics

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“…The capacitor value to be set depends on the resonant frequency of power transfer [15]. The resonant frequency is the same as the switching frequency in this circuit [16].The receiver coil will have a capacitor connected as per the decided frequency of power transfer. The next system is the BMS which involves the rectifier stage and necessary protection circuitrythe output of which is finally provided to the LiPo battery.…”

Section: System Schemementioning

confidence: 99%

Wireless charging scheme for medium power range application systems

Karthikeyan

Koley

Bagchi

et al. 2020

IJPEDS

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Wireless power transmission (WPT) has attracted a wide variety of subjects in various disciplines and has also become a highly active research field due to its capacity to facilitate charging systems. Wireless power transmission will be compulsory to use soon as this technology enables electrical energy to be transmitted from a power source to an electrical load over an air gap without connecting wires. Wireless power transmission has been developed in the low power (1W to 10W) and high power (100W-500W) region. While the low power region development focuses on powering medical transplants and mobile charging, the higher end of the power spectrum is being developed for the electric vehicle (EV) applications. However medium power range (10W to 100W) is relatively unexplored due to lack of proper applications. The commercial WPT scheme is mainly used for the charging of lithium-ion batteries. Sensitive medium power loads like Lithium Polymer (LiPo) batteries do not have a wireless modular charging system. This paper discusses a proposed scheme for wireless charging of medium-range loads. LiPo batteries are used as the targeted charging load. A minimalistic approach has been considered while designing the electronics for efficiency improvement and a compact, modular scheme. The proposed scheme has been developed for drone and robotics applications and the results are validated.

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“…(1) According to [24][25][26][27][28] the SP topology ensures greater power transfer efficiency than the other topologies in WPT applications. (2) The serial topology in the transmitter circuit is appropriate with the Class-E power amplifier topology since the chosen Class-E power amplifier has a tuning capacitor in parallel and a tuning capacitor in series [29,30] reducing the complexity of the system.…”

Section: Equivalent Electrical Circuit Of the Proposed Ric Wpt Systemmentioning

confidence: 99%

A Modified Wireless Power Transfer System for Medical Implants

et al. 2019

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Wireless Power Transfer (WPT) is a promising technique, yet still an experimental solution, to replace batteries in existing implants and overcome the related health complications. However, not all techniques are adequate to meet the safety requirements of medical implants for patients. Ensuring a compromise between a small form factor and a high Power Transfer Efficiency (PTE) for transcutaneous applications still remains a challenge. In this work, we have used a resonant inductive coupling for WPT and a coil geometry optimization approach to address constraints related to maintaining a small form factor and the efficiency of power transfer. Thus, we propose a WPT system for medical implants operating at 13.56 MHz using high-efficiency Complementary Metal Oxide-Semiconductor (CMOS) components and an optimized Printed Circuit Coil (PCC). It is divided into two main circuits, a transmitter circuit located outside the human body and a receiver circuit implanted inside the body. The transmitter circuit was designed with an oscillator, driver and a Class-E power amplifier. Experimental results acquired in the air medium show that the proposed system reaches a power transfer efficiency of 75.1% for 0.5 cm and reaches 5 cm as a maximum transfer distance for 10.67% of the efficiency, all of which holds promise for implementing WPT for medical implants that don’t require further medical intervention, and without taking up a lot of space.

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Study on efficiency of different topologies of magnetic coupled resonant wireless charging system

Cited by 13 publications

References 1 publication

Near‐field wireless power transfer used in biomedical implants: A comprehensive review

Near‐field wireless power transfer used in biomedical implants: A comprehensive review

Wireless charging scheme for medium power range application systems

A Modified Wireless Power Transfer System for Medical Implants

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