scholarly journals Field – Circuit Model of Wireless Transmission Power System using Ω–T–T0 Formulation

2018 ◽  
Vol 19 ◽  
pp. 01015
Author(s):  
Milena Kurzawa ◽  
Rafał M. Wojciechowski
Keyword(s):  
Field Model ◽  
Power Transmission ◽  
Circuit Model ◽  
Wireless Transmission ◽  
Wireless Power ◽  
Vector Potentials ◽  
High Frequency Transformer ◽  
Air Core ◽  
Scalar Magnetic Potential ◽  
Model Equations

The paper discusses the field-circuit model of the wireless power transmission system (WPTS) with the air-core high-frequency transformer. While working on the field model, a formulation which uses scalar magnetic potential Ω and electric vector potentials T and T0 was implemented. Model equations were provided. The system which consists of magnetically coupled coils connected with the elements of external circuits was taken into consideration. The selected results of simulation calculations were presented. The obtained results of simulation calculations were compared with the results of measurements obtained at a laboratory post.

scholarly journals Investigation and Modeling of Multi-Node Body Channel Wireless Power Transfer

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 156
Author(s):  
Yuxuan Huang ◽  
Jian Zhao ◽  
Wenyu Sun ◽  
Huazhong Yang ◽  
Yongpan Liu
Keyword(s):  
High Efficiency ◽  
Power Transmission ◽  
Wireless Body Area Network ◽  
Wireless Power Transfer ◽  
Circuit Model ◽  
Area Network ◽  
Power Transfer ◽  
Wireless Power ◽  
Received Power ◽  
Simulation Parameters

Insufficient power supply is a huge challenge for wireless body area network (WBAN). Body channel wireless power transfer (BC-WPT) is promising to realize multi-node high-efficiency power transmission for miniaturized WBAN nodes. However, the behavior of BC-WPT, especially in the multi-node scenario, is still lacking in research. In this paper, the inter-degeneration mechanism of a multi-node BC-WPT is investigated based on the intuitive analysis of the existing circuit model. Co-simulation in the Computer Simulation Technology (CST) and Cadence platform and experiments in a general indoor environment verify this mechanism. Three key factors, including the distance between the source and the harvester, frequency of the source, and area of the ground electrodes, are taken into consideration, resulting in 15 representative cases for simulation and experiments studies. Based on the simulation parameters, an empirical circuit model to accurately predict the received power of multiple harvesters is established, which fits well with the measurement results, and can further provide guidelines for designs and research on multi-node BC-WPT systems.

Wireless Charging System for Electric Vehicles

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
K. Paramesh ◽  
R.P. Neriya ◽  
M.V. Kumar
Keyword(s):  
Electric Vehicles ◽  
Power Transmission ◽  
Wireless Transmission ◽  
Electric Load ◽  
Wireless Charging ◽  
Electrical Load ◽  
Wireless Power ◽  
Charging System ◽  
Electrical Devices ◽  
Resonance Coupling

Wireless power transmission (WPT) is popular and gaining technology finding its application in various fields. The power is transferred from a source to an electrical load without the need of interconnections. WPT is useful to power electrical devices where physical wiring is not possible or inconvenient. The technology uses the principle of mutual inductance. One of the future applications finds in automotive sector especially in Electric Vehicles. This paper deals with research and development of wireless charging systems for Electric vehicles using wireless transmission. The main goal is to transmit power using resonance coupling and to build the charging systems. The systems deal with an AC source, transmission coil, reception coil, converter and electric load which are battery.

scholarly journals Transmission Distance Improvement of a Two-Coil Magnetic Resonance Wireless Power Transmission System Using Transformers

2021 ◽  
Vol 21 (4) ◽  
pp. 329-335
Author(s):  
Chang-Jin Lee ◽  
Se-Hoon Kim ◽  
Wan-Il Kim ◽  
Kwang-Cheol Ko
Keyword(s):  
Magnetic Resonance ◽  
Power Transmission ◽  
Transmission System ◽  
Circuit Analysis ◽  
Experimental Results ◽  
Wireless Transmission ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Transmission Distance ◽  
Simulation Results

In this paper, a two-coil magnetic resonance wireless transmission system is studied to improve the transmission distance using transformers. A conventional two-coil and four-coil wireless power transmission (WPT) system as well as a two-coil WPT system with transformers are analyzed comparatively via circuit simulations and experiments. Circuit analysis was used to predict the transmission distance with the highest efficiency. To verify the improvement in the transmission distance of the proposed system, transformers with inductance values of 80, 100, and 140 μH were fabricated and analyzed through experiments and simulations. A maximum S21 parameter of 0.76 was noted when the inductance was 80 μH and the transmitting distance was 4 cm. The experimental results almost matched the simulation results. From the experiments, it was shown that the transmitting distance of a WPT system can be adjusted by using transformers. Additionally, it was found that the transmitting distance is inversely proportional to the transformer inductance, and the efficiency of the WPT system decreases with the transmitting distance.

scholarly journals Wireless Energy Transmission Link Optimization considering Microwave Energy Relay

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Yuanming Song ◽  
Yajie Liu ◽  
Xu Yang
Keyword(s):  
Power Transmission ◽  
Microwave Energy ◽  
Wireless Transmission ◽  
Planning Model ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Energy Transmission ◽  
Long Distance ◽  
Widespread Application ◽  
Transmission Link

With the widespread application of intelligent unmanned units and the development of wireless energy transmission technology, it has become an urgent requirement in the field of using wireless power transmission to extend the continuous working time of unmanned units. To improve the wireless transmission energy efficiency in practical application as much as possible based on the current development level of wireless transmission technology, this paper first enumerates and analyzes existing wireless energy supply methods and shows that microwave wireless energy transmission technology is most suitable in this study. Then, the necessity of power transmission relay in long-distance microwave wireless power transmission is discussed. Based on the idea of microwave energy relay transmission, the paper constructs a microwave wireless transmission link planning model which considers power relay and uses the evolutionary algorithm to solve the wireless transmission link planning model with two-layer optimization. Finally, the results show that, when the wireless transmission distance exceeds a certain threshold, adding relay nodes to the link can improve the energy transmission efficiency from the power supply node to the power receiving node.

scholarly journals A Systematic Review of Wireless Transmission System

2021 ◽  
pp. 66-79
Author(s):  
A. M. Aibinu ◽  
J. A. Ojo ◽  
I. A. Adeyemo ◽  
T. A. Folorunso ◽  
I. G. Adebayo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Review Paper ◽  
Power Transmission ◽  
Comprehensive Evaluation ◽  
Transmission Mechanism ◽  
Wireless Transmission ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Comprehensive Review ◽  
Advantages And Disadvantages

Wireless transmission of energy has gained immense attention and importance in the heart of researchers over the years. Many attempts to make it a widely used technology have been done. However, this has not been successful or fruitful. Hence, the need for a comprehensive review of the mechanisms and techniques by harmonizing the findings of various researchers cohesively and adeptly. Thus, this review paper presents a comprehensive evaluation of the research works in wireless power transmission from the time of Andre-Marie Ampere in 1826 till date. The transmission mechanism and techniques used were concisely discussed as well as technologies that have incorporated wireless power transmission into their system. The study closes with a conclusive review of the challenges, and limitations faced, the application, advantages, and disadvantages, of wireless power transmission.

scholarly journals Design of High-Power High-Efficiency Wireless Charging Coils for EVs with MnZn Ferrite Bricks

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Yuyu Zhu ◽  
Zuming Wang ◽  
Xin Cao ◽  
Li Wu
Keyword(s):  
High Power ◽  
High Efficiency ◽  
Power Transmission ◽  
Transmission Efficiency ◽  
Wireless Transmission ◽  
Wireless Charging ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Quality Factors ◽  
Transmission Distance

In wireless power transmission systems, the inductance, equivalent resistance, and quality factors of the coils are the main factors that influence the system’s transmission efficiency. When designing high-power wireless charging coils for electric vehicles (EVs), ferrite bricks that increase magnetic flux can be selected to increase the self-inductance of the coils, improving the wireless transmission distance and transmission efficiency. In this paper, the effects of the ferrite bricks, the size of the coils, the charging distance, and many other factors in real applications have been extensively studied. After theoretical analysis and simulation, the wireless transmission system has been fabricated and measured. The measured and simulated results are in good agreement. High-power high-efficiency wireless power transmission has been achieved for EVs compared with many other previous literatures.

scholarly journals Wireless Power and Signal Transmission Based on Time-sharing Multiplexing for WPT System

2021 ◽  
Vol 252 ◽  
pp. 01023
Author(s):  
Xiaorui Wu ◽  
Wenlan Gong ◽  
Jing Xiao ◽  
Shaonan Chen ◽  
Ning Wu
Keyword(s):  
Power Transmission ◽  
Transmission Rate ◽  
Signal Transmission ◽  
Transmission Efficiency ◽  
Wireless Transmission ◽  
Transmission Time ◽  
Time Sharing ◽  
Wireless Power ◽  
Practical Applications ◽  
The Relationship

In wireless power transfer (WPT) systems, wireless transmission of signals is particularly important for some practical applications. An effective approach of signal and energy synchronous transmission based on time-sharing multiplexing of the same coupled coil is proposed in this paper. Using the same coupled coil, the signal transmission is carried on when interruption of power transmission happens. To realize the proposed method, the relationship between power transmission time and signal transmission time is provided to obtain the optimal transmission process of the power and signal. Besides, the power transmission efficiency (PTE) and the signal transmission rate (STR) are analyzed. Finally, the effectiveness of the proposed method is verified by the experiment.

scholarly journals Wireless Transmission of Solar Power

2021 ◽  
Vol 9 (VII) ◽  
pp. 3009-3017
Author(s):  
Ajay Bhardwaj
Keyword(s):  
Solar Energy ◽  
Solar Power ◽  
Power Transmission ◽  
Copper Wire ◽  
Electrical Energy ◽  
Energy System ◽  
Wireless Transmission ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Nikola Tesla

The Solar Power Satellite (SPS) is an energy system that collects solar energy in the upper atmosphere and transfers it to the ground. It has been seen as one of the best ways to alleviate the problem of future electricity needs. In the times to come, wireless power transmission will be used as it requires less maintenance and numerous other benefits. Solar energy is used for wireless power transmission. The wireless transmission concept was first realized by Nikola Tesla. Wireless transmission can bring about a noticeable change in the field of electrical engineering, which can lead to the fact that traditional copper wire is no longer used. For this project we used renewable energy as a source for wireless energy transmission. The DC output voltage of the solar cell is increased with a step-up converter and converted into oscillating signals. These oscillating signals are amplified via an amplifier and then supplied to the transmitting coil. By operating at the resonant frequency and achieving good coupling between the transmitter and receiver coils, electrical energy is transmitted between the transmitter and receiver due to the Magnetic resonance.

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