Design of Class DE Inverter with Second Order Constant K Band-Pass Filter

Katayama, Motoki; Häse, H.; Sekiya, Hiroo; Lü, Jianming; Yahagi, Takashi

doi:10.1093/ietfec/e90-a.10.2132

Cited by 1 publication

(2 citation statements)

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“…Unlike in the conventional half-bridge series resonant topology, Q S is independent from requirements of ZVS operation. Q S is expressed as (10) or (11) at the switching frequency f 0 .…”

Section: Design For Harmonics Suppressionmentioning

confidence: 99%

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13.56MHz Half-Bridge GaN-HEMT Resonant Inverter Achieving High Power, Low Distortion, and High Efficiency by ‘L-S Network’

Oyane

Thilak

Masuda

et al. 2022

IEICE Trans. Electron.

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This paper proposes a topology of high power, MHzfrequency, half-bridge resonant inverter ideal for low-loss Gallium Nitride high electron mobility transistor (GaN-HEMT). General GaN-HEMTs have drawback of low drain-source breakdown voltage. This property has prevented conventional high-frequency series resonant inverters from delivering high power to high resistance loads such as 50Ω, which is typically used in radio frequency (RF) systems. High resistance load causes hardswitching also and reduction of power efficiency. The proposed topology overcomes these difficulties by utilizing a proposed 'L-S network'. This network is effective combination of a simple impedance converter and a series resonator. The proposed topology provides not only high power for high resistance load but also arbitrary design of output wattage depending on impedance conversion design. In addition, the current through the series resonator is low in the L-S network. Hence, this series resonator can be designed specifically for harmonic suppression with relatively high quality-factor and zero reactance. Low-distortion sinusoidal 3kW output is verified in the proposed inverter at 13.56MHz by computer simulations. Further, 99.4% high efficiency is achieved in the power circuit in 471W experimental prototype.

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“…Unlike in the conventional half-bridge series resonant topology, Q S is independent from requirements of ZVS operation. Q S is expressed as (10) or (11) at the switching frequency f 0 .…”

Section: Design For Harmonics Suppressionmentioning

confidence: 99%

“…V CS and Q S were simulated using the computer simulation described later. L S and C S can be determined based on (10), (11), and (12).…”

Section: Design For Harmonics Suppressionmentioning

confidence: 99%