HUANG Xiaofan, LI Kangwen, DAI Ruipeng, et al. The analysis and verification of the best efficiency point of long distance wireless energy transmission System[J]. 2020,50(6):127-131.
HUANG Xiaofan, LI Kangwen, DAI Ruipeng, et al. The analysis and verification of the best efficiency point of long distance wireless energy transmission System[J]. 2020,50(6):127-131. DOI: 10.7512/j.issn.1001-2303.2020.06.25.
For the common inefficient transmission problem in the existing long distance magnetic coupling resonant wireless power transmission system,the resonant topology circuit structure,coil coupling coefficient,coil internal resistance and other factors of the transmission system are comprehensively analyzed.Impedance matching and shielding methods are adopted.Through modeling analysis of series resonance and calculation of transmission efficiency, the matching impedance value of the maximum efficiency point is obtained. The aluminum plate is used to surround the coil to reduce leakage flux,thus reducing transmission loss. Through theoretical analysis,simulation and experimental verification,the maximum wireless power transmission efficiency is 78.9% when the transmission distance is 1 meter and the impedance matching load is 53Ω.
关键词
无线电能传输长距离阻抗匹配最大效率点
Keywords
wireless power transmissionlong distanceimpedance matchingmaximum efficiency point