A5028516857- Electric Motor Design and Analysis
- Magnetic Bearings and Levitation Dynamics
- Magnetic Properties and Applications
- Multilevel Inverters and Converters
- Sensorless Control of Electric Motors
- Wind Turbine Control Systems
- Fault Detection and Control Systems
- Machine Fault Diagnosis Techniques
- Real-time simulation and control systems
- Microgrid Control and Optimization
- Induction Heating and Inverter Technology
- Steroid Chemistry and Biochemistry
- Non-Destructive Testing Techniques
- Marine Sponges and Natural Products
- Manufacturing Process and Optimization
- Power Transformer Diagnostics and Insulation
- Model-Driven Software Engineering Techniques
- Magnetic Properties of Alloys
- Bioactive Compounds and Antitumor Agents
- Hydraulic and Pneumatic Systems
- Phytochemical Studies and Bioactivities
- Islanding Detection in Power Systems
- Innovative Energy Harvesting Technologies
- Superconducting Materials and Applications
- Electrical Contact Performance and Analysis
Mondragon University
2016-2025
University of the Basque Country
2013
Universidade da Coruña
2007-2009
PharmaMar (Spain)
2008
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this paper, the behavior of a doubly fed induction generator (DFIG) is studied under unbalanced grid voltage conditions. It shown that if no special control efforts are employed, deteriorated, basically due to two reasons: electromagnetic torque oscillations and nonsinusoidal current exchange with grid. These phenomena first analyzed theoretically as function stator active reactive...
In this paper, a new predictive direct torque control (DTC) strategy of the doubly fed induction machine (DFIM) is presented. It especially designed to operate at considerably low constant switching frequency, reducing electromagnetic and rotor flux ripples, in order provide good steady-state fast dynamic performances. This convenient for high power drive generator applications, with restricted frequency. The DFIM connected grid by stator two level voltage source converter. addition, method...
Control of the brushless doubly fed machine (BDFM) based on traditional multiple reference frames is complex. To simplify control scheme, a new and simpler derivation dq model BDFM proposed, leading to unified-reference-frame model. This way, simple can be established, which could an interesting tool for control-synthesis tasks. In order determine unified model, restrictions related operation, as well exact rotor-cage configuration, have been considered. The proposed has validated by several...
A new vector control algorithm for the brushless doubly fed machine (BDFM) has been developed. The goal of BDFM is to achieve a similar dynamic performance induction (DFIM), exploiting well-known motor philosophy. For this purpose, recently developed unified reference-frame model used develop strategy. theoretical considerations design, loops tuning and limits are shown. In addition, practical experimental implementation Experimental results in prototype confirm good performances type control.
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this paper, a new predictive direct power control (DPC) technique is presented for the doubly fed induction machine (DFIM). Based on control, strategy able to operate at considerably low constant switching frequencies and allows it perform ripple minimization technique, in order improve steady-state transient response behaviors of machine. addition definition, paper includes conceptual...
In this paper, a detailed methodology for the design and characterization of cooling systems oriented to electrical machines is presented. Different kinds tools such as lumped-parameter models computational fluid dynamics (CFD) simulations are combined all together in order achieve accurate designs with reduced time consumptions. It well known that CFD can be very arduous they take too much time. work out these drawbacks, work, several procedures analyze by described detail. For instance, it...
This paper presents a new application of the predictive direct power control (P-DPC) for doubly fed induction machine. The P-DPC deals with several main characteristics which makes it very suitable high power-medium voltage generation systems where total harmonic distortion generating is relevant: three-level NPC converter presenting low and constant switching frequency feeds rotor by means an intermediate inductive filter. developed takes into account filter in prediction stage as part...
<div class="section abstract"><div class="htmlview paragraph">The automotive industry is amidst an unprecedented multi-faceted transition striving for more sustainable passenger mobility and freight transportation. The rise of e-mobility coming along with energy efficiency improvements, greenhouse gas non-exhaust emission reductions, driving/propulsion technology innovations, a hardware-software-ratio shift in vehicle development road-based electric vehicles. Current R&amp;D...
Three unusual new steroid thioesters, parathiosteroids A−C (1a−3a), were isolated from the 2-propanol extract of soft coral Paragorgia sp. collected in Madagascar. Their structures, determined by detailed spectroscopic analysis, confirmed synthesis and represent first isolation natural steroids bearing a C22 thioester their side chain. These compounds displayed cytotoxicity against panel three human tumor cell lines at micromolar level. The preparation several analogues revealed...
This paper deals with the development of analysis tools for axial-flux permanent-magnet machines. Normally, study this kind machine involves three-dimensional (3-D) finite element method (FEM) (FEM-3-D) due to 3-D nature magnetic problem. As it is widely known, FEM-3-D software could take too much time, and both definition solving processes problem may be very arduous. In paper, a novel procedure synchronous machines proposed. consists in combination 2-D FEM simulations analytical models...
The design of Synchronous Reluctance Motor (SynRM) has a lot variables. There are some difficulties to proper rotor-flux barrier geometry. It is necessary obtain an optimized geometry get the satisfactory results torque ripple, average torque, etc. SynRM new motor topology but in electrical railway applications not working yet. mature this application Induction (IM). main contribution paper compare both motors and answer about if we can use replacing IM whose advantages disadvantages...
Due to the increasing importance of reliability and availability electric traction drives in Railway applications, early detection faults has become an important key for drive manufacturers. Sensor are sources failures. Among different fault diagnosis approaches, this article integral strategy sensors is presented. Such composed observer-based approach direct current (DC)-link voltage catenary sensors, a frequency analysis motor phase hardware redundancy solution speed sensors. None them...
Induction machines have been key components in the industrial sector for decades, owing to different characteristics such as their simplicity, robustness, high energy efficiency and reliability. However, due stress harsh working conditions they are subjected many applications, prone suffering breakdowns. Among most common failure modes, bearing failures stator winding can be found. To a lesser extent, High Resistance Connections (HRC) also investigated. Motor power connection mechanisms may...
In this paper, a predictive direct torque control strategy with constant switching frequency of brushless doubly fed machine is presented. Firstly, the classical for has been developed, obtaining voltage vector table. The table developed analyzing flux and derivates each as function winding angle. order to employ frequency, applied. Reduced ripple implemented improve behavior at frequency. Simulation results show effectiveness proposed algorithm.
This letter proposes a rotor flux amplitude reference generation strategy for doubly fed induction machine based wind turbines. It is specially designed to address perturbations, such as voltage dips, keeping controlled the torque of turbine, and considerably reducing stator overcurrents during faults. In addition, direct control that provides fast dynamic response accompanies overall turbine. Despite fact proposed does not totally eliminate necessity typical crowbar protection this kind...
A new vector control algorithm for the brushless doubly-fed machine (BDFM) has been developed. The goal of BDFM is to achieve same or higher dynamic performance as wound rotor machine, exploiting well known induction motor philosophy. For this purpose a unified reference-frame model preferred. This paper exploits leading some interesting coupling properties and allowing high response. All work tested validated in an experimental prototype.
This paper presents a stability analysis of the brushless doubly-fed machine (BDFM) under closed loop scalar current control (CLSCC). The recently developed unified reference-frame dq model leads to an invariant small signal reflecting dynamic BDFM CLSCC. Theoretical shows stable behavior along all operation range. result is confirmed by experimental set-up. It concluded that CLSCC becomes simplest alternative any real application
Due to the importance of sensors in railway traction drives availability, sensor fault diagnosis has become a key point order move from preventive maintenance condition-based maintenance. Most research works are limited detection and isolation, but only few them analyze types faults, such as offset or gain, with aim reconfiguring implement tolerant system. This article is based on fusion model-based data-driven techniques. First, an observer-based approach, using Sliding Mode observer,...
In this paper, a direct torque control strategy for the brushless doubly fed machine is presented. The classical machines has been developed, obtaining voltage vector table. table developed analyzing flux and derivatives each as function of winding angle. Two types simulations have done, one an ideal case other practical implementation. Simulation results show effectiveness proposed algorithm.
Electric parameters of interior permanent magnet (PM) synchronous machines have a non linear characteristic due to saturation effects. Thus, d-q axes inductances are not constant, but they vary depending on the load conditions and current phase angle. Generally, this kind machine is characterized by cross-magnetization effect between so that an ideal uncoupled model suitable represent performance motor. In work steady state coupled which takes into account these linearities presented. An PM...