Comparative Performance and Assessment Study of a Current-Fed DC-DC Resonant Converter Combining Si, SiC, and GaN-Based Power Semiconductor Devices

Rodríguez-Benítez, Óscar Miguel; Ponce-Silva, Mario; Aquí-Tapia, Juan Antonio; Claudio-Sánchez, Abraham; Vela-Valdés, Luis Gerardo; Lozoya-Ponce, Ricardo Eliú; Cortés-García, Claudia

doi:10.3390/electronics9111982

Cited by 7 publications

(5 citation statements)

References 51 publications

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“…At higher frequencies, such as 6.78 MHz, switching losses become dominant, significantly reducing the efficiency of the system and increasing power losses on the transistor. To this aim, gallium nitride (GaN) transistors were considered (model EPC2023) [31][32][33][34]. To drive the four GaN MOSFETs of the bridge, two independent square signals were used.…”

Section: Resultsmentioning

confidence: 99%

Coil Design of a Wireless Power-Transfer Receiver Integrated into a Left Ventricular Assist Device

et al. 2021

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This study deals with the design of a near-field wireless power transfer (WPT) system applied to a left ventricular assist device (LVAD) to treat patients with heart-failure problems. An LVAD is an implanted electrically driven pump connected to the heart and is traditionally powered by batteries external to the human body via a percutaneous driveline cable. The main challenge of wirelessly powering an LVAD implanted deep in the human body is to transfer relatively high power with high efficiency levels. Here the optimal design of the primary and secondary WPT coils is proposed to improve the performance of the WPT, avoiding possible safety problems of electromagnetic fields (EMF). As a main result, an average power of 5 W is continuously delivered to the LVAD by the WPT system working at 6.78 MHz with a total (DC–to–DC) efficiency of approximately 65% for the worst-case configuration.

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Section: Resultsmentioning

confidence: 99%

Coil Design of a Wireless Power-Transfer Receiver Integrated into a Left Ventricular Assist Device

et al. 2021

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“…𝑡 𝑜𝑛 = 𝑄 𝐼 𝐺𝑜𝑛 (12) 𝑡 𝑜𝑓𝑓 = 𝑄 𝐼 𝐺𝑜𝑓𝑓 (13) The switching losses referred to the diode are related to reverse recovery. Therefore, due to the use of SiC technology devices, which present zero reverse recovery charge, it will be disregarded in this paper.…”

Section: Losses Analysis For the Implemeted Boost Convertersmentioning

confidence: 99%

Analysis of SiC and SiC-Cascode MOSFET in the design of power electronics converters for more electric aircrafts

Eleodoro

Barbosa

Lima

et al. 2022

IJPEDS

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<span>Wideband gap (WBG) semiconductors have developed rapidly in recent years, enabling greater efficiency and power density in the design of power electronics converters for several areas of application. In this sense, this work analyzes the efficiency and specificities of silicon carbide (SiC) technologies and their cascode topology (SiC-Cascode), operating at high switching frequencies. The analyzes are performed using a Boost converter designed for conversion systems in the more-electric aircraft (MEA) context, where the alternating current (AC) power systems can operate at fixed frequency (115V/400Hz), or at variable frequency (115V/360-800Hz), such as observe in Boeing 787, and the direct current (DC) power system can operate with a DC bus of 400 V and +/-270 V are normally used. To validate the project, computer simulations were performed and a 1.0kW prototype was built in the laboratory. The performance analyses demonstrates that 97.5% of efficiency is achieved at 500 kHz switching frequency.</span>

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“…A study on system stability revealed that the overlap time affects the system stability, but it is not explained in detail [14]. A study compared losses due to overlap time in different power devices and analyzed the degree of loss reduction in different power device combinations [15]. A natural soft-commutation PWM scheme reduces the overlap duration by achieving natural soft commutation during the switching process, but it only considers the unity power factor [16].…”

Section: Introductionmentioning

confidence: 99%

A Novel Overlap-Time Effect Suppression for Current Source Converter

Ding

Yuan

et al. 2022

Energies

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In order to ensure the continuity of the DC-side inductor current, current source converter (CSC) needs to add overlap time between the drive signals, but the overlap time will introduce low order (mainly fifth and seventh) harmonics to the grid current, which seriously degrade the harmonic performance of grid current. At present, some research has been conducted to theoretically analyze and mitigate the overlap-time effect in CSC, including the use of positive-slope sawtooth wave or negative-slope sawtooth wave as the carrier wave, turning on the switch early or delaying turning it off, and eliminating the deviation effect by compensation algorithms, etc. However, existing overlap-time suppression schemes takes the nearest three vector synthesis reference vector scheme as the object of study, in other words, the effect of overlap time on the non-nearest three-vector synthesis reference vector scheme has not been considered. To address these issues, this paper takes the non-nearest three-vector synthesis reference vector scheme as the object of study to analyze the effect of overlap time on the driving signal and establishes the quantitative relationship between the current harmonics introduced in the grid current and overlap time through Fourier decomposition. Then, the design process of the proposed improved space vector modulation by constructing freewheeling channels to replace the overlap time is presented in detail. Finally, simulation and experimental results verify that the overlap-time suppression effect of the proposed scheme is about 100%.

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Comparative Performance and Assessment Study of a Current-Fed DC-DC Resonant Converter Combining Si, SiC, and GaN-Based Power Semiconductor Devices

Cited by 7 publications

References 51 publications

Coil Design of a Wireless Power-Transfer Receiver Integrated into a Left Ventricular Assist Device

Coil Design of a Wireless Power-Transfer Receiver Integrated into a Left Ventricular Assist Device

Analysis of SiC and SiC-Cascode MOSFET in the design of power electronics converters for more electric aircrafts

A Novel Overlap-Time Effect Suppression for Current Source Converter

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