Analysis of magnetically coupled wireless power transfer between two resonators based on power conservation

Investigation of Single-Input Multiple-Output Wireless Power Transfer Systems Based on Optimization of Receiver Loads for Maximum Efficiencies

“…As we have first assumed, the coupling coefficients between the Tx and Rx loops are considerably larger than those between the two adjacent Rx loops. This explains why the efficiencies obtained from the closed-form expressions (20) and 21, neglecting the coupling coefficients between the two adjacent Rx loops, agree well with those obtained from the numerical optimization and measurements.…”

“…and         2 3 3 1 3 2 3 3 3 2 2 3 3 1 2 [19,20]. The total efficiency ƞ t is the sum of (11) and (12), and is given by…”

“…The expressions (20) and (21) are the extensions of (9) and (10) for the SISO system. When N = 1, (20) and (21) reduces to (9) and (10), respectively. Table 1 shows the optimum load resistances (R L,opt ) for different number of receivers.…”

“…The solid lines are obtained from the GA optimization using the measured circuit values summarized in Table 2. The dashed lines show the efficiencies from the closed-form expression (20). The square symbols show the measured efficiencies using a twoport network analyzer (Fig.…”

Realization of Optimum Loads for Maximum WPT Efficiencies Using Multi-Turn Receiving Coil

“…본 논문에서는 수신 코일의 권선 수를 늘려서 수신 코일의 최적 부하저항을 증가시 킴으로써 가급적 2-coil 시스템에서 최대 전력을 전송할 수 있는 구체적인 방안을 제시한다. [8] .…”