Results 21 to 30 of about 1,361,235 (280)
Novel Bearing Current Suppression Approach in Doubly-Fed Induction Generators
IEEE Access, 2019 Doubly-fed induction generators (DFIGs) are widely used in the wind power generation systems. However, due to the use of the power electronic devices, such as insulated gate bipolar transistor (IGBT), it is inevitable to generate a non-zero common mode ...
Ruifang Liu +3 more
doaj +1 more source
Voltage calculation on low voltage feeders with distributed generation [PDF]
, 2014 Includes bibliographical references.The increasing levels of greenhouse gas emission and the continued depletion of fossil fuels have been the driving factors for power utilities to utilize renewable energy sources for power generation.
Namanya, Emmanuel
core +1 more source
IEEE Access, 2021 Compared with silicon (Si) IGBTs, silicon carbide (SiC) MOSFETs have much faster switching speeds and high switching frequency operation capability, enabling compact and high-efficiency motor drive systems.
Yipu Xu +4 more
doaj +1 more source
机车电传动, 2020 After the adoption of SiC device in traction converter for rail transit, the design of traction system will be negatively affected by the high switching speed and high switching frequency of power switch devices.
Yongjian ZHI +5 more
doaj
WLI, XPS and SEM/FIB/EDS Surface Characterization of an Electrically Fluted Bearing Raceway
LubricantsElectrical bearing currents may disturb the performance of the bearings via electro-corrosion if they surpass a limit of ca. 0.1 to 0.3 A/mm2. A continuous current flow, or, after a longer time span, an alternating current or a repeating impulse-like ...
Omid Safdarzadeh +4 more
doaj +1 more source
Energies, 2020 Adjustable speed drives use Pulse Width Modulation (PWM) to switch DC-bus voltage for the synthesis of three-phase voltages to provide power to the permanent magnet synchronous motor (PMSM).
Muhammad Aqil, Jun-Hyuk Im, Jin Hur
doaj +1 more source
A 3D Reduced Common Mode Voltage PWM Algorithm for a Five-Phase Six-Leg Inverter
Machines, 2023 Neutral point voltage control converters (NPVCC) are being considered for AC drive applications, where their additional degree of freedom can be used for different purposes, such as fault tolerance or common mode voltage (CMV) reduction.
Markel Fernandez +5 more
doaj +1 more source
Wind Turbine Generator Reliability: An Exploration of the Root Causes of Generator Bearing Failures [PDF]
, 2013 Increasing the availability of multi-megawatt wind turbines (WT) is necessary if the cost of energy generated by wind is to be reduced. Reliability surveys have shown that WT generator bearings have a relatively high failure rate, with failures happening
WHITTLE, MATTHEW
core
Energy optimization of multiprocessor systems on chip by voltage selection
, 2007 Dynamic voltage selection and adaptive body biasing have been shown to reduce dynamic and leakage power consumption effectively. In this paper, we optimally solve the combined supply voltage and body bias selection problem for multiprocessor systems with
Eles, Petru Ion, +9 more
core +1 more source
Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations
Pediatric Blood &Cancer, EarlyView.ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan +18 more
wiley +1 more source