A Power-Efficient CMOS Active Rectifier with Circuit Delay Compensation for Wireless Power Transfer Systems

2018 ◽  
Vol 38 (3) ◽  
pp. 947-966 ◽  
Author(s):  
Sajjad Shahsavari ◽  
Mehdi Saberi
Keyword(s):  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Delay Compensation ◽  
Power Efficient ◽  
Active Rectifier ◽  
Circuit Delay

scholarly journals A Novel Single-switch Phase Controlled Wireless Power Transfer System

Electronics ◽  
2018 ◽  
Vol 7 (11) ◽  
pp. 281 ◽  
Author(s):  
Xin Liu ◽  
Nan Jin ◽  
Xijun Yang ◽  
Khurram Hashmi ◽  
Dianguan Ma ◽  
...  
Keyword(s):  
Wireless Power Transfer ◽  
Phase Control ◽  
Constant Current ◽  
Power Transfer ◽  
Wireless Power ◽  
Effective Implementation ◽  
Active Rectifier ◽  
Switching Patterns ◽  
Control Scheme ◽  
Wireless Power Transfer System

Battery charging is a fundamental application of Wireless Power Transfer (WPT) systems that requires effective implementation of Constant Current (CC) and Constant Voltage (CV) power conduction modes. DC-DC converters used in WPT systems utilize large inductors and capacitors that increase the size and volume of the system in addition to causing higher DC losses. This work proposes a novel single-switch active rectifier for phase controlled WPT systems that is smaller in volume and weight as compared to conventional WPT topologies. The proposed method simplifies the control scheme using improved Digital Phase Control (DPC) and Analog Phase Control (APC) to realize the CC and CV power transfer modes. Furthermore, it prevents forward voltage losses in Silicon Carbide (SiC) switches and shoot through states with improved switching patterns. Simulation studies and experimental results are added to verify the effectiveness of the proposed methodology.

Evaluation of Maximum Lifetime Power Efficient Routing in Ad hoc Network Using Magnetic Resonance Concept

2019 ◽  
Vol 13 (3) ◽  
pp. 256-260 ◽  
Author(s):  
Manish Bhardwaja ◽  
Anil Ahlawat
Keyword(s):  
Ad Hoc Network ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Power Efficient ◽  
Maximum Lifetime ◽  
Battery Power ◽  
Mobile Ad Hoc

Background: A mobile Ad-hoc Network is a network in which each node is independent of all other nodes of the network. In MANETs, nodes do not have proper infrastructure. The power source of the Mobile Ad-hoc network is battery power. As we all know, battery power has a certain limit and problems. Objective: The main objective of this manuscript is to resolve the power problem of nodes of mobile ad hoc networks and increase the lifetime of the network. Methods: This paper implements the concept of wireless power transfer between the nodes of Adhoc network and transfers the power to these nodes wirelessly and uses the maximum lifetime power efficient routing algorithm (MLPER) to reduce the consumption of power used by the nodes. The wireless power transfer can be achieved with the help of one type of near-field techniques called magnetic resonance which works at the same resonance frequency. This technique is nonradiative in nature. Results: This paper reduces the problem of power of the ad hoc network nodes nearly 70 to 80 % from the traditional concept used for lifetime optimization of these nodes. Conclusion: In this manuscript, performance optimization can be analysed with the help of AODV (Ad hoc On-Demand Distance Vector Routing Protocol) on-demand routing protocol. This manuscript shows that the proposed algorithm gives significant better results than AODV protocol with some performance metrics. We revised some patents relating to Wireless power transfer.

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