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Green Energy Efficient Wired and Wireless Charging Techniques for IoT Enabled Healthcare Systems
Published in Gurjit Kaur, Akanksha Srivastava, Green Communication Technologies for Future Networks, 2023
Arshpreet Singh, Yaman Parashar
The principle of charging techniques, currently available applications, and design of charging system with respect to architectures, hardware designs, and implementations are explained in this section. Moreover, we present the wireless power propagation models for non-radiative charging systems. Wireless charging is a technology that allows transmission of power from one device to another through air. But what we usually do not know is its sub classified techniques, standards, detail description about their working components, their limitations and challenges that they might face according to a particular type of application. With the rapid technological advancement in the wireless charging sector, the dependency on portable battery powered device has come to a halt. However, despite a number of advantages, there also exist a number of challenges that this technology is facing, which are in regard to size, power management, and implementation. Therefore, in this chapter we have tried to give our readers a comprehensive overview on the working of this technology as a whole, its importance in IoT enabled healthcare systems, technical advancement in networking applications etc. Apart from all this, we further provide a brief introduction to the challenges that the current biomedical systems are facing while setting up or implementing the wireless charging technologies. At last, we provide a brief to the potential architectures that can be adopted after dealing with the issues, challenges, and limitations that we have discussed in this chapter.
A Novel Internet of Things Access Architecture of Energy-Efficient Solar Battery Charging System for Mobile Phones
Published in Lavanya Sharma, Pradeep K Garg, From Visual Surveillance to Internet of Things, 2019
Wireless charging works by exchanging the energy from the charger to a recipient attached to the back of a cell phone through electromagnetic acceptance. The charger utilizes an acceptance loop to make a substituting electromagnetic field, which the receiver coil in the cell phone converts again into power to be bolstered into the battery. The charger and cell phone regularly must be close to each other and effectively adjusted to the highest point of each other. Charging at a distance has huge market potential for wireless charging with charging pads.
Electric Vehicles
Published in Hussein T. Mouftah, Melike Erol-Kantarci, Smart Grid, 2017
Wireless charging is an emerging technology that uses time-varying magnetic fields to transfer electric power over an air interface to charge an electrical load (Figure 13.3). With an interoperability industry standard (SAEJ2954), wireless charging of PEVs has become a tangible reality. Wireless charging is possible when the PEV is on the move, or stationary.
High-Power Converters and Challenges in Electric Vehicle Wireless Charging – A Review
Published in IETE Journal of Research, 2023
S. Kodeeswaran, M. Nandhini Gayathri, P. Sanjeevikumar, Rafael Peña-Alzola
In a wireless charging system, the power is transferred from the primary circuit (transmitter) to the secondary circuit (receiver) through one of the following methods: inductive charging, capacitive charging, permanent magnet charging, and resonant inductive charging. The inductive charging is the most widely used wireless charging method in electric vehicles. Due to the magnetic field produced between the coils, the power is transferred from one side to another through mutual induction. The inductive charging method has attained a total power transfer efficiency of 96% [1]. On the other hand, the capacitive charging system uses high-frequency converters and induces the electric fields to transmit the power from ground to the vehicle side. The two pairs of capacitive plates are used to form a coupler which induces the electric fields. Due to induced electric fields, the capacitive charging system can transfer power even through a small gap between the transmitter and receiver plates. Also no misalignment problem occurs [2]. The resonant inductive charging and permanent magnet charging methods are suitable for electric vehicle charging, but not preferred much due to the high cost for implementation. If any fault or damage in the system occurs, it is relatively complicated to replace [3]. Usually, wireless charging is efficient when the distance between the charging device and the target device is ranging from 150 to 300 mm, and utilizes frequencies in kHz to MHz range.