A Review of High Frequency Power Converters and Related Technologies

Wang, Yijie; Lucía, Óscar; Zhang, Zhe; Gao, Shanshan; Guan, Yueshi; Xu, Dianguo

doi:10.1109/ojies.2020.3023691

Cited by 54 publications

(18 citation statements)

References 100 publications

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“…For this reason, it is critical to monitor the quality of the produced electric current, especially when the production embeds power electronics. Power electronics can operate under a wide range of switching conditions, starting at about 1 kHz and going up to several megahertz [1]. The requirement for higher-efficiency electrical grids and lower emissions of traditional power frequency harmonics has led to the emission of frequency components in the range of 2 kHz to 150 kHz [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Design of a Supraharmonic Monitoring System Based on an FPGA Device

Barkas

Ioannidis

Kaminaris

et al. 2022

Sensors

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During the last few decades, the poor quality of produced electric power is a key factor that has affected the operation of critical electrical infrastructure such as high-voltage equipment. This type of equipment exhibits multiple different failures, which originate from the poor electric power quality. This phenomenon is basically due to the utilization of high-frequency switching devices that operate over modern electrical generation systems, such as PV inverters. The conduction of significant values of electric currents at high frequencies in the range of 2 to 150 kHz can be destructive for electrical and electronic equipment and should be measured. However, the measuring devices that have the ability of analyzing a signal in the frequency domain present the ability of analyzing up to 2.5 kHz–3 kHz, which are frequencies too low in comparison to the high switching frequencies that inverters, for example, work. Electric currents at 16 kHz were successfully measured on an 8 kWp roof PV generator. This paper presents a fast-developed modern measuring system, using a field programmable gate array, aiming to detect electric currents at high frequencies, with a capability for working up to 150 kHz. The system was tested in the laboratory, and the results are satisfactory.

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Section: Introductionmentioning

confidence: 99%

Design of a Supraharmonic Monitoring System Based on an FPGA Device

Barkas

Ioannidis

Kaminaris

et al. 2022

Sensors

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“…The three main structures for realizing a resonant inverter are shown in Fig. 1, namely: series resonant tank, parallel resonant tank, and series-parallel resonant tank [6]. Half-bridge and Full-bridge are the conventional-used topologies for realizing resonant converters [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Small Signal Modeling of Five-Level Series Resonant Inverter

et al. 2021

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This paper explains the implementation of a small-signal model for a new five-level series resonant inverter structure. The proposed circuit combines the advantages of multilevel inverters and the characteristics of the physical phenomena, resonance. The small-signal model offers the possibility to design a linearized linear time-invariant (LTI) model around an equilibrium point based on first order Taylor series. After that, the performance of the proposed five-level series resonant inverter and its smallsignal model are evaluated in MATLAB/Simulink environment. Compared with a MATLAB model generated using the system identification toolbox, the developed small-signal model exhibited a good accuracy in frequency and time domains. In addition, a hardware test bench is developed to validate the proposed model. Both simulation and experimental results shows that the proposed multilevel resonant inverter is very interesting for high-voltage high-frequency applications. As a perspective, from the results obtained, we suggest the use of small-signal AC analysis for multilevel series resonant inverter modeling. The paper contains rich information of the recently used tools for dynamic systems modeling and analysis of nonlinear processes that can be applied for the modeling and analysis of other power electronics inverters.INDEX TERMS AC analysis of dynamic nonlinear system, five-level series resonant inverter, inverter mathematical model, multilevel inverter simulation, model of inverter, small-signal modeling.

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“…For any switch-mode power converter it is important to evaluate the losses that are generated in the circuit. Lower losses lead to higher efficiencies and may lead tighter packed converters [4,5]. For switch-mode power converters these losses are primarily catogorized into two topics: switching losses and conduction losses.…”

Section: Introductionmentioning

confidence: 99%

Enhancement Mode GaN-FETs in Extreme Temperature Conditions, Part II: Dynamic Parasitic Parameters

Duraij

Xiao

Zsurzsan

et al. 2021

Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT)

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Parasitic components in eGaN-FETs impact the dynamic performance of switching stages. The capacitances seen, primarily on the output characteristics, of these devices are a main contributor towards switching losses and therefor converter efficiency. Additionally, the threshold voltage of the device has an impact towards the switching speed and therefore the efficiency of a power stage. This study shows the impact of extreme temperatures towards the parasitics that impact the switching behaviour of a power stage. A literature research is conducted exploring the various mechanisms and temperature dependancies, which are then related towards transient operations of eGaN-FETs. A device was chosen to perform measurements on output-, reverse transfer capacitance and threshold voltage while increasing temperature from 100°C op to 225°C. The presented results show a large impact of temperature in these parasisic elements that show that high temperature switch-mode power converters need additional design work to ensure switching performance and lifetime.

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A Review of High Frequency Power Converters and Related Technologies

Cited by 54 publications

References 100 publications

Design of a Supraharmonic Monitoring System Based on an FPGA Device

Design of a Supraharmonic Monitoring System Based on an FPGA Device

Analysis and Small Signal Modeling of Five-Level Series Resonant Inverter

Enhancement Mode GaN-FETs in Extreme Temperature Conditions, Part II: Dynamic Parasitic Parameters

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