In the traditional Class E inverter [1, 2, 3], the input inductor LF acts as a choke, while the tuned load network (CF, LS,CS, R) is selected to both deliver power to the load resistor R and shape the switch voltage vDS to provide zero-voltage switching (ZVS) and zero dv/dt turn on of the switch.
In addition to load sensitivity, conventional Class E power inverters require the switching transistor to withstand substantial voltage stress. Eliminating harmonics at the switch node is a primary method currently employed to address this issue.
We present a design methodology yielding class E inverter designs that are effective across a wide load resistance range. We focus on identifying the resonant frequencies and characteristic impedances of the key resonant networks in the circuit, and provide guidance of how circuit performance is modified by adjusting these parameters.
Because the load network is used to shape the switch voltage trajectory, the traditional Class E inverter is highly sensitive to variations in load resistance [2, 4], and tends to deviate substantially from zero-voltage switching for load variations of more than about a factor of two or three in resistance.
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To simultaneously resolve both load sensitivity and high voltage stress—two persistent challenges in Class E design—this paper proposes a novel clamped load …
This paper presents a comparative analysis of the class E and selected enhanced class E inverters, namely, the second and third harmonic group of class EFn, E/Fn and the …
In the MHz frequency range, both class-D and class-E inverters, which boast theoretical efficiencies approaching 100%, have captured signicant at-tention as high-frequency power …
This paper presents the design, simulation, and experimental validation of a load-independent class E inverter tailored for biomedical implant applications.
An Isolated Constant-Current ZVS Class-E Inverter with Coupled-Inductors. The Bradley Department of Electrical and Computer Engineering College of Engineering Virginia …
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Abstract—This paper presents the circuit design and magnetic integration of push-pull class-E inverters for wireless power transfer (WPT) up to megahertz. The design criterion for achieving …
We describe some recent research advances and implementations of class-E rec-tifiers and dc-to-dc converters at ultrahigh frequency (UHF) and beyond.
Class E resonant power amplifier (or inverter) is often applied to design a high frequency switching power converter. The zero voltage switching …
Class E resonant power amplifier (or inverter) is often applied to design a high frequency switching power converter. The zero voltage switching (ZVS) or zero current switching (ZCS)...
Abstract—Single-switch inverters such as the conventional class E inverter are often highly load sensitive, and maintain zero-voltage switching over only a narrow range of …
Class E inverter is the most widely used single ended switching inverter in the high frequency field. However, due to the existence of resonant network, the inv
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