Results 21 to 30 of about 96 (94)
International Journal of Circuit Theory and Applications, EarlyView.A ramp‐based phase‐locked loop (RPLL) active rectifier operating at 40.68 MHz compensates switching delay variations to improve phase alignment. The proposed architecture achieves 90.3% peak power conversion efficiency and 98.0% voltage conversion ratio for high‐frequency wireless power transfer in implantable medical devices.
Woorim Lee +5 more
wiley +1 more source
Energy Science &Engineering, EarlyView.Bipolar configuration is a new topology in the direct current (DC) system of photovoltaic power plants, which is topologically analogous to the bipolar configuration utilised in High‐Voltage Direct Current power transmission systems. DC cable length and copper usage are reduced by 50% using a bipolar configuration.
Duško M. Tovilović +2 more
wiley +1 more source
Evaluation of DC-link voltage ripple in five-phase PWM voltage source inverters
The Journal of Engineering, 2019 This paper presents the analysis of the DC-link voltage switching ripple in five-phase PWM voltage source inverters with balanced load. The analysis is particularly important for the design and selection of a DC-link capacitor making it possible to meet ...
M. Vujacic +4 more
doaj +1 more source
Lifetime Analysis of Grid‐Tied Photovoltaic System Considering DC–DC Converter Ripple and Efficiency
Energy Science &Engineering, EarlyView.This work presents a comprehensive lifetime analysis of a two‐stage grid‐tied photovoltaic (PV) system by incorporating critical factors such as input current ripple and operating voltage variations, which are often neglected in conventional studies.
Surla Vishnu Kanchana Naresh +2 more
wiley +1 more source
Efficiency-optimised modulation technique of three-level NPC inverter
The Journal of Engineering, 2018 The three-level NPC inverter has many advantages, such as the characteristics of high output power, low device stress, and low harmonic distortion of output waveform.
Ning Li +3 more
doaj +1 more source
Energy Science &Engineering, EarlyView.This graphical abstract illustrates the evolution of wireless electric vehicle charging from unidirectional wireless power transfer to bidirectional wireless power transfer (BWPT) and toward future intelligent, autonomous wireless energy systems.
P. V. Elumalai +6 more
wiley +1 more source
Analysis of capacitive discharges in motor bearings under different operation conditions
IET Electric Power ApplicationsDespite being a well‐known problem, bearing faults are still one of the major challenges that the industry face. The growing use of voltage source inverters imposed the alertness of possible bearing damage due to their high‐frequency signals.
Sara Jammoul +5 more
doaj +1 more source
Seven-level inverter with switched capacitors
The Journal of Engineering, 2019 The seven-level (7L) inverter with a nearly sinusoidal output voltage is suitable for renewable energy conversion applications. A novel 7L inverter topology with switched capacitors is proposed here.
Xuezhi Wu +5 more
doaj +1 more source
Hybrid Inverters With Dual Switching Frequencies for Switched Reluctance Motors
Energy Science &Engineering, EarlyView.A hybrid dual‐switching‐frequency inverter for SRMs is proposed, combining SiC and IGBT devices based on rotor inductance. The method enables accurate current tracking with simple hysteresis control, significantly reducing torque ripple, vibration, and acoustic noise while cutting inverter cost compared to full‐SiC solutions.
Fares S. El‐Faouri +4 more
wiley +1 more source
Comparative research of harmonic suppression algorithm of the three-level NPC converter
The Journal of Engineering, 2018 The three-level NPC converter is an effective solution to medium-voltage and high-power electronic converters. Modulation strategy is one of research focus of the three-level NPC converter.
Li Ning, Gao Tong, Zhang Hui, Yang Ping
doaj +1 more source