Results 51 to 60 of about 28,429 (228)
CES Transactions on Electrical Machines and SystemsSensorless control of switched reluctance motors (SRMs) often requires a hybrid mode combining low-speed pulse injection methods and high-speed model-based estimation. However, pulse injection causes unwanted audible noises and torque ripples.
Zifeng Chen +5 more
doaj +1 more source
Investigation of Motor Current Signature Analysis in Detecting Unbalanced Motor Windings of an Induction Motor with Sensorless Vector Control Drive [PDF]
, 2015 Maintaining the efficiency of AC motors in site equipment is important, given the increasing cost of energy. Reduction of motor efficiency from baseline manufacturer data can go undetected until total failure of the equipment is experienced.
Ashari, Djoni +3 more
core +1 more source
Voltage Sensorless Grid-Forming Power Converters
2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL), 2020 During the years, synchronization systems in power converter control has been mainly used for estimating the phase angle and the magnitude of the grid voltage, this estimated information is usually used for droop control strategies to ensure power sharing among power converters.
Tarraso Martínez, Andrés +3 more
openaire +1 more source
Are seizure forecasts and cycles better than chance? What chance?
Epilepsia, EarlyView.Abstract Objective There is a growing synergy between the lines of research on cycles in epilepsy and seizure forecasting. It has been conjectured, for instance, that incorporating information about significant seizure cycles into forecasting algorithms can lead to a better‐than‐chance forecasting performance.
Ralph G. Andrzejak +4 more
wiley +1 more source
Cost-Effective Predictive Flux Control for a Sensorless Doubly Fed Induction Generator
IEEE Access, 2019 The paper introduces a cost effective predictive flux control (PFC) approach for a sensorless doubly fed induction generator (DFIG). The base operation of the proposed PFC depends on controlling the rotor flux (α-β) components using a cost ...
Mahmoud A. Mossa +3 more
doaj +1 more source
Robust Sensorless Model-Predictive Torque Flux Control for High-Performance Induction Motor Drives
Mathematics, 2021 This paper introduces a novel sensorless model-predictive torque-flux control (MPTFC) for two-level inverter-fed induction motor (IM) drives to overcome the high torque ripples issue, which is evidently presented in model-predictive torque control (MPTC).
Ahmed G. Mahmoud A. Aziz +2 more
doaj +1 more source
On extended Kalman filters with augmented state vectors for the stator flux estimation in SPMSMs [PDF]
, 2010 The demand for highly dynamic electrical drives, characterized by high quality torque control, in a wide variety of applications has grown tremendously during the past decades.
Boel, René +2 more
core +2 more sources
Design of a Hydroelectronic Solar‐Tracking System for Solar Panels
Energy Science &Engineering, EarlyView.A prototype of a passive solar‐tracking system utilizing buoyant force based on water level was developed, and its MATLAB/Simulink model was implemented. This study is expected to encourage researchers to design solar‐tracking mechanisms using metals with different thermal expansion coefficients, air, oil, and other fluids. ABSTRACT This study presents
Ufuk Süğürtin, Türker Fedai Çavuş
wiley +1 more source
Sensorless MPPT Algorithms for PV Systems in Partially Shaded Scenarios
Eletrônica de PotênciaThis manuscript presents current sensorless algorithms for maximum power point tracking (MPPT) in partially shaded photovoltaic (PV) systems. The necessity of a current sensor is eliminated with the use of mathematical modeling of the power electronics ...
Guilherme M. S. Martines +4 more
doaj +1 more source
An analysis of the benefits of signal injection for low-speed sensorless control of induction motors
, 2015 We analyze why low-speed sensorless control of the IM is intrinsically difficult, and what is gained by signal injection. The explanation relies on the control-theoretic concept of observability applied to a general model of the saturated IM.
Combes, Pascal +3 more
core +3 more sources