Results 11 to 20 of about 4,229 (191)

Initial Rotor Position Detection of Induction Machines Using Feedforward Sensorless Saliency Separation

open access: yesPower Electronics and Drives, 2021
The use of induction machine spatial saliencies for sensorless vector control in the proximity of zero electrical frequency has been extensively researched over the last few decades. A robust technique to extract machine saliencies is called voltage step
Montero Eduardo Rodriguez   +2 more
doaj   +1 more source

Modeling and Simulation of a Turbine Access System with Three-Axial Active Motion Compensation

open access: yesJournal of Marine Science and Engineering, 2023
As an essential transportation equipment for personnel to access offshore wind plants, the safety and stability of the turbine access system (TAS) have gained increasing significance.
Jingfu Wang   +5 more
doaj   +1 more source

High-Bandwidth Hysteresis Compensation of Piezoelectric Actuators via Multilayer Feedforward Neural Network Based Inverse Hysteresis Modeling

open access: yesMicromachines, 2021
This paper proposes a feedforward and feedback combined hysteresis compensation method for a piezoelectric actuator (PEA) based on the multi-layer feedforward neural network (MFNN) inverse model.
Yanding Qin   +3 more
doaj   +1 more source

Speed Control of Load Torque Feedforward Compensation Based on Linear Active Disturbance Rejection for Five-Phase PMSM

open access: yesIEEE Access, 2019
This study focuses on the speed control problem of a five-phase permanent magnet synchronous motor (PMSM) in the presence of a variable load torque and unknown model parameters.
Zhi Kuang   +3 more
doaj   +1 more source

Coordinated control of active disturbance rejection and grid voltage feedforward for grid‐connected inverters

open access: yesIET Power Electronics, EarlyView., 2022
This paper introduces the research on the inductance‐capacitor‐capacitor‐inductance grid‐connected inverter using active disturbance rejection and grid voltage feedforward coordinated control technology. The pade approximation is performed on the inductance‐capacitor‐capacitor‐inductance filter to derive the first‐order discretization mathematical ...
Guang‐Xin Zhong   +4 more
wiley   +1 more source

An Improved Dual-Loop Feedforward Control Method for the Enhancing Stability of Grid-Connected PV and Energy Storage System Under Weak Grids

open access: yesFrontiers in Energy Research, 2022
Although the stability of the grid-connected photovoltaics (PV) and energy storage systems under weak grids has been widely researched, the classical improvement methods focus more on suppressing the harmonics introduced by the phase-locked loop (PLL ...
Chunxu Li   +4 more
doaj   +1 more source

Robust synthesis of feedforward compensators

open access: yesIEEE Transactions on Automatic Control, 1999
Summary: The design of a feedforward compensator for robust \({\mathcal H}_\infty\) or \({\mathcal H}_2\) performance under structured uncertainty is considered. For linear time-invariant uncertainty, a convex method based on linear matrix inequalities (LMI's) across the frequency variable is given.
Paganini, Fernando, Giusto, Alvaro
openaire   +3 more sources

Current Harmonic Suppression Algorithm for Asymmetric Dual Three-Phase PMSM

open access: yesApplied Sciences, 2020
Based on the vector space decomposition (VSD) transformation, the currents of an asymmetric dual three-phase permanent magnet synchronous motor (ADT-PMSM) with isolated neutral points are decoupled into the torque, producing α-ß components in ...
Zhihong Wu   +4 more
doaj   +1 more source

Multiharmonic rf feedforward system for beam loading compensation in wide-band cavities of a rapid cycling synchrotron

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2011
For the acceleration of very high intensity protons in the 3 GeV rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex (J-PARC), the beam loading compensation in the rf accelerating cavities is implemented.
Fumihiko Tamura   +9 more
doaj   +1 more source

Multislope PI Modeling and Feedforward Compensation for Piezoelectric Beam [PDF]

open access: yesMathematical Problems in Engineering, 2020
The hysteresis nonlinearity greatly reduces the tracking precision of piezoceramic actuators for expected displacement in a high-accuracy positioning system. In order to effectively compensate the hysteresis for piezoelectric ceramics, a novel modeling method, namely, multislope PI (Prandtl–Ishlinskii) was proposed.
Ming Xu   +3 more
openaire   +2 more sources

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