LIAO Zhijuan,FENG Qikai,WU Fan,et al.Real Eigenstate Operating Modes and Energy Efficiency Characteristic Analysis of Magnetic Coupling Wireless Power Transfer System[J].Automation of Electric Power Systems,2022,46(3):164-174.
LIAO Zhijuan,FENG Qikai,WU Fan,et al.Real Eigenstate Operating Modes and Energy Efficiency Characteristic Analysis of Magnetic Coupling Wireless Power Transfer System[J].Automation of Electric Power Systems,2022,46(3):164-174. DOI: 10.7500/AEPS20210517004.
Real Eigenstate Operating Modes and Energy Efficiency Characteristic Analysis of Magnetic Coupling Wireless Power Transfer System
the parity-time (PT) symmetric mode of magnetic coupling wireless power transfer (MC-WPT) systems is not fully understood in terms of physical principles
parameter conditions and the difference from common operating modes. Aiming at this problem
the PT-symmetric MC-WPT systems is modeled and analyzed based on the vibrational theory. It is demonstrated that the PT-symmetric mode is essentially a real eigenstate mode
and the general parameter conditions of the real eigenstate mode are derived. From the perspective of real eigenstate
the physical principles of the PT-symmetric systems based on the operational amplifier and the inverter are compared and analyzed. It is proved that the PT-symmetric system based on the operational amplifier is a self-excited oscillation system with the self-selected frequency characteristic. While the PT-symmetric system based on the inverter is essentially a forced response system and the operating frequency is given by the inverter. On this basis
the PT-symmetric system is compared with several common operating modes of the MC-WPT system
including the zero phase angle mode
magnetic resonance mode proposed by Massachusetts Institute of Technology (MIT) of USA and complex eigenstate mode. The characteristics
advantages and disadvantages of each operating mode are obtained.
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