Results 51 to 60 of about 1,432 (200)
Energy Reports, 2023 This paper presents a method to estimate the components of the PEM electrolyzer voltage with the dynamic input current. The total voltage can be divided into reversible voltage and irreversible voltage that the former always can be described as a ...
Kai Jing, Chang Liu
doaj +1 more source
Impact of parasitic and load current on the attenuation of motor terminal overvoltage in SiC-based drives [PDF]
, 2022 In SiC-based adjustable speed drives, the high voltage slew rate (/) of the switching transitions results in excessive overvoltage at the motor terminals due to the reflected voltages across the drive power cables. Besides the cable length, the switching
Wenzhi Zhou (6575999) +2 more
core +2 more sources
Energies, 2022 High-speed EMUs (electric multiple-units) frequently pass through the phase-separation zone during operation. Overvoltage generated during the operation of the vehicle-mounted circuit breaker has a long duration and high waveform steepness, which ...
Jixing Sun +5 more
doaj +1 more source
Characterization and Lifetime Projection of GaN HEMTs Under Repetitive Overvoltage Switching
, 2023 Transient voltage overshoot is a common phenomenon in GaN high electron mobility transistors (HEMTs) under high slew rate switching conditions. The dynamic parametric instability under such stress is a critical concern for GaN applications.
Strittmatter, Robert +9 more
core +1 more source
Estimation of New Weighted Controlled Switching Overvoltage by RBFN Model [PDF]
Journal of Operation and Automation in Power Engineering, 2020 Mitigating switching overvoltages (SOVs) and conducting well-suited insulation coordination for handling stresses are very important in UHV transmission Lines. The best strategy in the absence of arresters is controlled switching (CS). Although elaborate
M. Hasanpour +2 more
doaj +1 more source
Advanced Electronic Materials, EarlyView.This study represents one of the systematic demonstrations of a screen‐printed, flexible WO3‐based supercapacitor, exhibiting excellent charge‐storage performance for powering wearable electronics. The device shows a specific capacitance of 3.44 F g−1 and an energy density of 0.302 Wh kg−1 at 0.05 mA, which enable to operate multiple wearable ...
Jithin Kanathedath +6 more
wiley +1 more source
THE RESONANT OVERVOLTAGE IN NON-SINUSOIDAL MODE OF MAIN ELECTRIC NETWORK
Electrical engineering & Electromechanics, 2018 Purpose. The resonant overvoltage arises in main electrical networks as a result of random coincidence of some parameters of circuit and its mode and it may exist for a relatively long time.
V. G. Kuznetsov +4 more
doaj +1 more source
High Voltage, EarlyView.ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang +5 more
wiley +1 more source
Investigation of IGBT switching energy loss and peak overvoltage using digital active gate drives
, 2017 This paper presents an experimental investigation of the switching energy loss and peak overvoltage occurring in a half-bridge Insulated Gate Bipolar Transistor (IGBT) converter which is switched using an Active Gate Drive. A range of voltage profiles is
Rogers, D +5 more
core +1 more source
, 2022 Surge-energy and overvoltage ruggedness of power devices are desired in many power applications. For the GaN high-electron-mobility transistor (HEMT), a device without avalanche capability, its surge-energy and overvoltage ruggedness are both determined ...
Li, Qiang +3 more
core +1 more source