scholarly journals Design of High Distance Diameter Ratio Wireless Transmission System Based On LCC-S Compensation Network

2021 ◽  
Vol 2113 (1) ◽  
pp. 012028
Author(s):  
Aiwei Yang ◽  
Wei Xie ◽  
Tao Liu ◽  
Xiaobin He
Keyword(s):  
Power Supply ◽  
High Frequency ◽  
Power Transmission ◽  
Transmission Efficiency ◽  
Transmission System ◽  
Diameter Ratio ◽  
Wireless Transmission ◽  
Outer Diameter ◽  
Zero Current ◽  
Power Frequency

Abstract A wireless power transmission system based on LCC-S compensation network is designed. The transmission system is composed of power frequency power supply, LCC-S compensation resonant converter and DC/DC converter, and the output power supply for the battery system. Through the design of transmission coil and compensation network parameters, zero current input is realized. A wireless transmission coil with outer diameter of 47cm and spacing of 30cm is designed. A 2kW wireless transmission system prototype is built. Under 311V input, the actual transmission efficiency of high frequency inverter/wireless transmission/high frequency rectifier reaches 88.5%, and the wireless energy transmission with high distance to diameter ratio is realized.

Design of Wireless Microwave Transmission System

2013 ◽  
Vol 441 ◽  
pp. 959-962
Author(s):  
Bin Wen Huang ◽  
Yuan Jiao
Keyword(s):  
Wireless Communication ◽  
High Frequency ◽  
Transmission System ◽  
Wireless Transmission ◽  
Broadband Wireless ◽  
Microwave Transmission

As a high-frequency and broadband wireless transmission system [, wireless microwave transmission system plays an important role in wireless communication family, especially in newest WiMax and 4G technology. Wireless microwave transmission system can be separated by indoor unit (IDU) and outdoor unit (ODU). This paper is focused on the design of IDU and ODU.

scholarly journals Unilateral Route Method to Estimate Practical Mutual Inductance for Multi-Coil WPT System

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 377
Author(s):  
Seon-Jae Jeon ◽  
Sang-Hoon Lee ◽  
Dong-Wook Seo
Keyword(s):  
High Frequency ◽  
Power Transmission ◽  
Transmission Efficiency ◽  
Mutual Inductance ◽  
New Method ◽  
Parasitic Element ◽  
Parasitic Effects

Multi-coil WPT systems require mutual inductance information between coils to increase the power transmission efficiency. However, in the high frequency (HF) bands such as 6.78 MHz and 13.56 MHz, the presence of surrounding coils changes the value of the mutual inductance between the two coils due to the parasitic element effect of the coils. These parasitic effects make it harder to estimate the mutual inductance among three or more coils. In contrast to ideal mutual inductance, which has a constant value regardless of frequency and surrounding coils, we define the practical mutual inductance as the mutual inductance varied by parasitic elements. In this paper, a new method is presented to estimate the practical mutual inductance between multiple coils in the HF band. The proposed method simply configures the expression of practical mutual inductance formula because only one of two bilateral dependent voltage sources generated by mutual inductance is considered. For several coils placed along the same axis, the practical mutual inductances between coils were measured with respect to the distance between them to validate the proposed method. The practical mutual inductance obtained from the proposed method was consistent with the simulated and measured values in HF band.

scholarly journals 100 Gb/s Multicarrier THz Wireless Transmission System With High Frequency Stability Based on A Gain-Switched Laser Comb Source

2015 ◽  
Vol 7 (3) ◽  
pp. 1-11 ◽  
Author(s):  
H. Shams ◽  
T. Shao ◽  
M. J. Fice ◽  
P. M. Anandarajah ◽  
C. C. Renaud ◽  
...  
Keyword(s):  
High Frequency ◽  
Frequency Stability ◽  
Transmission System ◽  
Wireless Transmission

Design of Outdoor Unit for Wireless Microwave Transmission System

2013 ◽  
Vol 423-426 ◽  
pp. 2663-2666 ◽  
Author(s):  
Bin Wen Huang ◽  
Yuan Jiao
Keyword(s):  
High Frequency ◽  
Transmission System ◽  
Wireless Transmission ◽  
Broadband Wireless ◽  
Microwave Transmission ◽  
And Function

As a high-frequency, broadband wireless transmission system, wireless microwave transmission system is still paid attention by the whole world. The construction and function of wireless microwave transmission system is introduced in this paper. This paper focuses on the design of outdoor unit for wireless microwave transmission system.

Pulse-Driving Based Magnetic Coupling Resonant Wireless Power Transmission System Research

2011 ◽  
Vol 378-379 ◽  
pp. 539-542
Author(s):  
Qiang Wang ◽  
Hong Li
Keyword(s):  
Optimization Design ◽  
Power Transmission ◽  
Magnetic Coupling ◽  
Transmission Efficiency ◽  
Transmission System ◽  
System Research ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Power Transmission System ◽  
Magnetic Resonances

This paper analyses and designs a kind of pulse-driving based wireless power transmission system via coupled magnetic resonances. It analyzes the influence of the related parameters on the transfer efficiency and transfer power of the system. The experiment tests the proposed wireless power transmission system, and the results show that the above relevant parameters should be comprehensively considered, in order to achieve the optimization design of the transmission efficiency or transmission power. The experiment results also show the validity of the theoretical analysis.

scholarly journals Loader power-split transmission system based on a planetary gear set

2018 ◽  
Vol 10 (1) ◽  
pp. 168781401774773 ◽  
Author(s):  
Chang Lyu ◽  
Zhao Yanqing ◽  
Lyu Meng
Keyword(s):  
Output Power ◽  
Fuel Economy ◽  
Power Transmission ◽  
Planetary Gear ◽  
Torque Converter ◽  
Transmission Efficiency ◽  
Transmission System ◽  
Mechanical Transmission ◽  
Power Split ◽  
Hydraulic Torque Converter

In hydraulic mechanical transmission loaders, a hydraulic torque converter can prevent an engine from stalling due to overloading of the loader during the spading process; however, the hydraulic torque converter also reduces the loader’s fuel economy because of its low transmission efficiency. To address this issue, the study designs an output-power-split transmission system that is applied to a hybrid loader. The designed transmission system removes the hydraulic torque converter in the power transmission system of a traditional loader and adopts a planetary gear set with a compact structure as the dynamic coupling element, thus allowing the output power of the loader to be split transmitted. During shoveling, the loader power-split transmission system based on a planetary gear set can prevent the motor from plugging and over-burning under conditions that ensure that the traction does not decrease. In addition, the transmission efficiency and loader fuel economy are higher in the proposed transmission system than in the power transmission system of a traditional loader. The test results show that the transmission efficiency of the designed system was 13.2% higher than that of the traditional hydraulic mechanical transmission loader.

Three-phase receiving coil of wireless power transmission system for gastrointestinal robot

2017 ◽  
Vol 31 (32) ◽  
pp. 1750277 ◽  
Author(s):  
Z. W. Jia ◽  
T. Jiang ◽  
Y. Liu
Keyword(s):  
Power Transmission ◽  
Asynchronous Motor ◽  
Animal Experiments ◽  
Transmission Efficiency ◽  
Transmission System ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Power Transmission System ◽  
Three Phase

Power shortage is the bottleneck for the wide application of gastrointestinal (GI) robot. Owing to the limited volume and free change of orientation of the receiving set in GI trace, the optimal of receiving set is the key point to promote the transmission efficiency of wireless power transmission system. A new type of receiving set, similar to the winding of three-phase asynchronous motor, is presented and compared with the original three-dimensional orthogonal coil. Considering the given volume and the space utilization ratio, the three-phase and the three-orthogonal ones are the parameters which are optimized and compared. Both the transmission efficiency and stability are analyzed and verified by in vitro experiments. Animal experiments show that the new one could provide at least 420 mW power in volume of [Formula: see text] with a uniformity of 78.3% for the GI robot.

scholarly journals Performance verification test of coaxial centrifugal clutch for motorcycle transmission system

2021 ◽  
Vol 2141 (1) ◽  
pp. 012008
Author(s):  
Zih-Chun Dai
Keyword(s):  
Power Transmission ◽  
Combustion Engine ◽  
Type System ◽  
Transmission Efficiency ◽  
Transmission System ◽  
Unstable State ◽  
Performance Verification ◽  
Variable Transmission ◽  
Output Efficiency ◽  
Dry Clutch

Abstract With the popularization of motorcycles, the demand for motorcycles is getting higher and higher. Therefore, the improvement of power output, the reduction of pollutants discharged, the replacement of waste, the improvement of efficiency and the reduction of fuel use, are also relatively important. Stop-and-go on urban driving will keep the clutch in a state of being engaged and not engaged. The clutch cannot be engaged and is constantly worn. The output efficiency of the CVT belt-type continuously variable transmission system clutch used in the transmission is only about 70~80%. Transmission efficiency. Furthermore, since the traditional CVT belt-type system clutch mainly relies on the action of the centrifugal roller to change the reduction ratio, when encountering different driving conditions and need to accelerate and decelerate, this will make the working area of the internal combustion engine in an unstable state. The matching structure between the automatic clutch weight and the telescopic spring in the reciprocating separation state and the fitted state is replaced, which effectively reduces the problem of uneven contact surfaces of the plates in the past, and prevents the elastic aging from affecting the uniform transmission of power, resulting in the entire dry clutch The life span of the engine is improved and the efficiency of power transmission is maintained, thereby reducing fuel consumption and producing more complete engine power. Therefore, the “Design Performance Verification of Coaxial Contact Centrifugal Ball Clutch” is proposed mainly to verify that the coaxial contact centrifugal ball clutch has better performance than the CVT belt-type clutch.

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