Analysis and Design of Class-E<sub>
                     <i>M</i>
                  </sub> Power Amplifier at Subnominal Operation

Li, Tian; Li, Mingyu; Dai, Zhijiang; Li, Li; Jin, Yi; Xu, Changzhi; Shi, Weimin; Pang, Jingzhou; Cao, Hailin

doi:10.1109/tcsi.2022.3202816

Cited by 3 publications

(2 citation statements)

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“…The phase-modulated reactance adjusts the phase shift of the output current of the main and auxiliary circuits. The duty ratios of the main and auxiliary circuits are 0.5 and 0.25 as presented in [17]. The ZVS Class-E amplifier and the ZVS Class-E frequency doubler can be used in the auxiliary circuit, the latter has higher power transmission efficiency, and can enable the overall circuit to be more efficient.…”

Section: Circuit Analysis Of the Suboptimum Class-e M /F 3 Resonant I...mentioning

confidence: 99%

“…Nevertheless, the Class-E M topologies in [12], [13], [14], [15], [16], and [17] suffer from a rather high peak switching voltage factor of 4.3, which is about 20% higher than the Class-E commonly, i.e., 3.6, which will limit their widespread application in power electronic circuits. The Class-F inverter can solve the problem of the high drain-to-source voltage of the Class-E M inverter greatly [18].…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Design of the Suboptimum Class-E_M/F₃ Resonant Inverter

Yang,

Li,

Liu

et al. 2023

IEEE Access

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In this paper, the analysis and design method for the suboptimum Class-E M /F 3 inverter (i.e., only the zero-voltage switching (ZVS), the zero-voltage-derivative switching (ZVDS), the zero-current switching (ZCS) conditions are satisfied) with a duty ratio D =0.5 are presented. In the proposed design method, a new design parameter K called the slope of switch current (when the switch turns off) is introduced for defining the suboptimum degree and the distance from the optimum condition. By using the design method of the soft switching resonant inverter, the third harmonic filter circuit is innovatively introduced to reduce the current flowing through the parallel capacitor of the main circuit, and greatly reduce the peak switching voltage of the main circuit and auxiliary circuit. And the circuit waveforms and design equations can be derived in detail. Compared with the conventional Class-E M inverter, the proposed inverter can offer the much lower peak switching voltage and higher efficiency. To verify the validity of the proposed method, a Class-E M /F 3 inverter operating at 1MHz is designed using the IRFZ24N transistor. The experimental results show that the output power of the new inverter is 15.138W, the efficiency reaches 96.4%, and the peak switching voltage of the main circuit and auxiliary circuit is reduced by 29.3% and 15.6%, respectively. The PSpice-simulation results and the experimental measurement results of the designed inverter are agreed with the analytical results, which verified the effectiveness of the proposed design method. INDEX TERMSClass-E M /F 3 inverter, suboptimum, low peak switching voltage, high efficiency, ZVS, ZVDS, ZCS.

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Section: Circuit Analysis Of the Suboptimum Class-e M /F 3 Resonant I...mentioning

confidence: 99%