Results 21 to 30 of about 3,160,518 (299)
Applied Sciences, 2021 In variable speed applications, the cycloconverter-based AC to AC power conversion technique has gained more attention among researchers and academics than the traditional rectifier-inverter-based AC to AC power conversion process.
Tariqul Islam +3 more
doaj +1 more source
Frequency-domain-based complete loss model for 10 kV/1 MW solid-state transformer
The Journal of Engineering, 2019 This study proposes a frequency-domain-based loss model for dual active bridge (DAB) inside modular multi-level cascaded solid-state transformer (SST). Previously, the loss model is mainly derived in the time domain and requires enormous modelling effort.
Tao Liu +6 more
doaj +1 more source
Electrical engineering & Electromechanics, 2023 Introduction. This research presents a simple single-phase pulse-width modulated 7-level inverter topology for renewable system which allows home-grid applications with electric vehicle charging.
E. Parimalasundar +3 more
doaj +1 more source
Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections
High Voltage, 2018 DC–DC modular multilevel converter (DC–DC MMC) is an attractive candidate for high-voltage DC (HVDC) interconnections since it can provide the required voltage matching, galvanic isolation and flexible power control abilities.
Shanshan Zhao, Yu Chen, Li Peng
doaj +1 more source
Analysis of Switched Capacitor Losses in Polar and Quadrature Switched Capacitor PAs [PDF]
IEEE Transactions on Circuits and Systems II: Express Briefs, 2020 This brief derives the efficiency limitations of switched capacitor power amplifiers (SCPAs) due to switched capacitor (SC) losses during charging and discharging of their capacitor arrays. Polar modulation is covered, as well as quadrature modulation both with clock duty cycles of 50% (Q50) and 25% (Q25).
Joep Zanen +2 more
openaire +1 more source
IEEE Access, 2023 Transformerless grid-connected inverters have attained a lot of research interest in renewable energy interface applications, due to certain promising properties like greater efficiency, light weight, affordable price, and tolerable power density.
Sudipto Mondal +3 more
doaj +1 more source
IEEE Access, 2019 Aim at reducing switching loss (SL) of neutral-point clamped three-level inverter (NPC TLI) as much as possible, a novel SL minimized discontinuous pulse width modulation (SLMDPWM) strategy is proposed in this paper.
Weidong Jiang +4 more
doaj +1 more source
IGBT Power Module Design for Suppressing Gate Voltage Spike at Digital Gate Control
IEEE Access, 2023 This paper clarifies the effect of gate inductance $L_{g}$ inside IGBT modules on gate voltage spikes when a digital gate driver is employed. Three IGBT modules with different $L_{g}$ were fabricated to implement double pulse tests by conventional ...
Zaiqi Lou +5 more
doaj +1 more source
, 2021 La trattazione riguarda i benefattori, i donatori che hanno deciso a Bologna di contribuire al bene comune non tramite le tradizionali istituzioni caritatevoli, quali ospedali, conventi e monasteri, ma anche attraverso l’investimento dei loro beni nel ...
Edward Loss
core +1 more source
Evaluation of Frequency and Temperature Dependence of Power Losses Difference in Parallel IGBTs
IEEE Access, 2020 With the development of high power converters, safe operation of IGBT modules with parallel chips is of increasing importance. IGBT can work normally in safe range in the initial operation even if current imbalance is happening.
Jianxiong Yang +3 more
doaj +1 more source