IEEE Transactions on Power Electronics

Gate-Drive Power Supply With Decayed Negative Voltage to Solve Crosstalk Problem of GaN Synchronous Buck Converter

June 4, 2020Yu Chen; Ruwen Wang; Xinmin Liu; Yong KangLetters

Gallium-Nitride (GaN) transistor suits for high switching frequency condition to build high power density converters. However, it suffers from crosstalk problem especially in bridge-structure applications, that is, the fast voltage changing of the switching node causes a positive or negative voltage spike on the gate-source voltage of GaN transistor, which results in false turn-on and […]

Characterization of 3.3-kV Reverse-Blocking SiC Modules for Use in Current-Source Zero-Voltage-Switching Converters

June 4, 2020X. Han, L. Zheng, R.P. Kandula, K. Kandasamy, D. Divan, and M. SaeedifardDiscrete and Integrated Semiconductors

Characterization of 3.3-kV Reverse-Blocking SiC Modules for Use in Current-Source Zero-Voltage-Switching Converters Silicon carbide (SiC) MOSFETs with ratings of 3.3 to 15 kV represent a dramatic improvement over available silicon devices, enabling the realization of medium-voltage converters in demanding applications such as solid-state transformers. Typical voltage-source converter configurations realize significant reduction in switching loss with […]

Chart Design Method for Multicoil Resonant Wireless Power Transfer Systems

June 4, 2020Z. Kaczmarczyk, K. Bodzek, K. Frania, and A. RuszczykPassive Components and Materials

Chart Design Method for Multicoil Resonant Wireless Power Transfer Systems A chart design method for multicoil resonant wireless power transfer (MC-RWPT) systems is presented in this article. MC-RWPT system is described by a matrix model, which in combination with the coupling calculation method and after applying the optimization procedure, is used to determine the design […]

Grid Inertia Support Enabled by Smart Loads

June 2, 2020Y. Qi, T. Yang, J. Fang, Y. Tang, K. R. R. Potti, and K. RajashekaraControl in Power Electronics

Grid Inertia Support Enabled by Smart Loads The increasing penetration of renewable energy resources (RESs) leads to a continuous displacement of synchronous generators. Since the grid integration of RESs is usually achieved through inertialess power converters, the system inertia reduces and the power system frequency stability is compromised. Consequently, unexpected generator tripping, load shedding, and […]

Analysis of Sector Update Delay and Its Effect on Digital Control Three-Phase Six-Switch Buck PFC Converters With Wide AC Input Frequency

June 2, 2020Q. Chen, J. Xu, Z. Tao, H. Ma, and C. ChenControl in Power Electronics

Analysis of Sector Update Delay and Its Effect on Digital Control Three-Phase Six-Switch Buck PFC Converters With Wide AC Input Frequency In this article, the sector update delay (SUD) of the digital control three-phase six-switch (3 ph-6 s) buck power factor correction (PFC) converter is analyzed. SUD of 3 ph-6 s buck PFC converter results […]

Analytical Model to Study Hard Turn-off Switching Dynamics of SiC mosfet and Schottky Diode Pair

June 1, 2020S.K. Roy and K. BasuDiscrete and Integrated Semiconductors

Analytical Model to Study Hard Turn-off Switching Dynamics of SiC mosfet and Schottky Diode Pair Fast switching transient of SiC mosfet may lead to prolonged oscillations, spurious turn on, large device stress, and high amount of electromagnetic interference generation. For an optimal layout and gate driver design, study of switching dynamics is important. This article […]

Zero-Voltage-Switching Single-Phase Full-Bridge Inverter With Active Power Decoupling

May 29, 2020M. Chen, Z. Ye, Y. Chen, and D. XuLow-Power Converters

Zero-Voltage-Switching Single-Phase Full-Bridge Inverter With Active Power Decoupling Single-phase zero-voltage-switching (ZVS) inverter with wide bandgap devices has higher efficiency and power density. However, the dc-side capacitor of the inverter will suffer double line frequency ripple and reduces the lifetime of the dc bus capacitor. Active power decoupling (APD) is an effective method to replace the […]

Low-Frequency Oscillation in Electric Railway Depot: A Comprehensive Review

May 29, 2020Haitao Hu; Yi Zhou; Xin Li; Ke LeiPower Quality and Utilities

The wide adoption of a new type of electric trains results in multiple frequency-scale instability problems, such as low-frequency oscillation (LFO), harmonic resonance, and harmonic instability. Among them, LFO has been commonly reported at electric railway depots with multiple-energized electric trains around the whole world, thus attracting widespread research attention. LFOs cause adverse effects on […]

Investigation of the Power Factor of Magnetic-Field Modulated Brushless Double-Rotor Machine

May 28, 2020J. Bai, J. Liu, G. Liu, Y. Liu, and P. ZhengRenewable Energy

Investigation of the Power Factor of Magnetic-Field Modulated Brushless Double-Rotor Machine The magnetic-field modulated brushless double-rotor machine (MFM-BDRM), getting rid of brush and slip ring, is a preferable selection for the power splitting device in hybrid electric vehicles. In practical application, however, the MFM-BDRM is facing the challenge of low power factor owing to its […]

An Isolated Bidirectional Microinverter Based on Voltage-in-Phase PWM-Controlled Resonant Converter

May 28, 2020H. Wu, X. Tang, J. Zhao, and Y. XingLow-Power Converters

An Isolated Bidirectional Microinverter Based on Voltage-in-Phase PWM-Controlled Resonant Converter A single-stage single-phase isolated bidirectional microinverter based on a voltage-in-phase pulsewidth modulation (VIP-PWM)-controlled resonant converter is proposed in this article. With the VIP-PWM control, the voltage conversion ratio of the resonant converter can be regulated from zero to infinity, theoretically, which means the VIP-PWM is […]