Control Híbrido Óptimo en una Modulación de Vector Espacial (SVM) para un Inversor de Potencia Electrica

En el presente artículo se muestran los resultados generados durante la investigación del problema de control híbrido óptimo para la modulación vectorial espacial (SVM), permitiendo enfocarlo a control híbrido óptimo para la modulación de ancho de pulso (PWM). La descripción teórica se centra en el proceso de modulación por la cual permite la creación de formas de onda de corriente alterna (CA) aplicados en motores trifásicos con amplificadores de clase D. Con la presente contribuimos a la reducción de deformaciones senoidales de la corriente (distorsión armónica total, THD) producidas por el cambio rápido inherente en la implementación de nuestro algoritmo. Los resultados se observan en las simulaciones obtenidas a través del software Matlab/Simulink

Model predictive current control based on a generalised adjacent voltage vectors approach for multilevel inverters

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/163810/1/pel2bf01679.pd

A MODIFIED VIRTUAL SPACE VECTOR MODULATION TECHNIQUE FOR Z-SOURCE NPC INVERTERS

A modified virtual space vector modulation approach for the control of a Z-source neutral point clamped inverter is presented in this paper. This approach works perfectly for the traditional neutral point clamped inverter. In this paper, the effectiveness of the virtual space vector modulation technique in balancing the input capacitor voltages of the Z-source NPC inverter with no low-frequency oscillations superimposed in addition to voltage buck-boost capability is demonstrated through simulations in SABER®. A prototype converter is used to capture experimental results for validation

A Novel Blind Source Separation Algorithm and Performance Analysis of Weak Signal against Strong Interference in Passive Radar Systems

In Passive Radar System, obtaining the mixed weak object signal against the super power signal (jamming) is still a challenging task. In this paper, a novel framework based on Passive Radar System is designed for weak object signal separation. Firstly, we propose an Interference Cancellation algorithm (IC-algorithm) to extract the mixed weak object signals from the strong jamming. Then, an improved FastICA algorithm with K-means cluster is designed to separate each weak signal from the mixed weak object signals. At last, we discuss the performance of the proposed method and verify the novel method based on several simulations. The experimental results demonstrate the effectiveness of the proposed method

High-Efficiency NPC Multilevel Converter Using Super-Junction MOSFETs

Super-junction MOSFETs exhibit low on-state resistances and low switching losses. However, the reverse recovery behavior of their intrinsic diodes and their output capacitance characteristics make their deployment in freewheeling locations challenging. In this paper, a new snubber circuit arrangement has been proposed for a three-level converter to minimize the effect of the output capacitance. This is used in conjunction with diode deactivation circuitry to address the diode recovery behavior. Results are given for a three-phase three-level neutral point clamped converter running from an input voltage of 720 V and supplying a 3-kVA load. The converter operates with no forced cooling and efficiency is estimated at 99.3%. Apart from lower energy consumption, an advantage of high efficiency is a reduced converter mass due to reduced cooling requirements

A new switched DC –link capacitor based multilevel converter (SDC2MLC)

At present, one of the most common techniques for high power conversion in medium voltage applications is the use of cascaded multilevel converters. In this article, a new Switched DC-Link Capacitor Multilevel converter (SDC2MLC) with considerably few numbers of power electronics switches (IGBTs) is proposed, where keeping the total harmonic distortion (THD) of the output voltage waveforms as low as possible is desired. The proposed topology is configured using two separate basic units. Each unit consists of four switches with a series-parallel combination of isolated DC sources. The performance of the presented topology for both configurations is described. The required number of switches, power diodes, gate driver circuits and voltage stresses across the switches are compared with those of other recent published techniques. Furthermore, operation and performance of the proposed SDC2MLC are illustrated with the aid of experimental results of a single-phase 11-level converter to clarify the viability of the proposed topology

Comparative Analysis of Multilevel Converters for Medium-Voltage Applications

The electric energy demand has been steadily growing during the last century, and all forecasts indicate that it will keep growing in the following years. Within this frame, and due to all the problems that this demand increase generate in the environment, it is necessary improving the current techniques of electric energy conversion and transmission in order to increase the whole system efficiency. On the other hand, it is also necessary increasing the renewable energy resources exploitation through more efficient generation systems. According to these lines, the power electronics systems that have been installed in the last decades allowed to obtain better efficiency from the renewable natural resources like the wind or the solar power. These systems have also notably improved the quality of the power supplied, reducing the losses through what are known as power quality applications. Power converters are currently essential in any power electronics system. Within them, the multilevel converters specially suppose a breakthrough compared with the classical two level converters, as they allow obtaining voltage and current signals with lower harmonic content, what means fewer losses in high power medium voltage applications. In this Thesis a comparative study of some multilevel converter topologies normally used in high power medium voltage applications is done. The objective is analyzing in detail each topology and comparing it with the rest following different criteria, with the aim to know the advantages and drawbacks of each one and to realize which one is more suitable for each application

Memoria del II Congreso Internacional en Inteligencia Ambiental, Ingeniería de Software y Salud Electrónica y Móvil – AmITIC 2018

El 2do Congreso Internacional en Inteligencia Ambiental, Ingeniería de Software y Salud Electrónica y Móvil – AmITIC 2018, es un evento de carácter anual que reúne a investigadores, docentes y estudiantes a través de la presentación de diversos proyectos e investigaciones que aportan a cada una de las líneas de investigación y necesidades de la sociedad. La organización de este evento internacional ha estado a cargo de la Universidad Tecnológica de Panamá (UTP), Centro Regional de Chiriquí, el Grupo de Investigación en Tecnologías Computacionales Emergentes - GITCE y la Facultad de Ingeniería de Sistemas Computacionales, con el apoyo financiero de la Secretaría Nacional de Ciencia, Tecnología e Innovación (SENACYT), que año tras año confía en la labor que desarrollamos en esta casa de estudio. David, Chiriquí, Rep. de Panamá 12 al 14 de septiembre de 2018El 2do Congreso Internacional en Inteligencia Ambiental, Ingeniería de Software y Salud Electrónica y Móvil – AmITIC 2018, es un evento de carácter anual que reúne a investigadores, docentes y estudiantes a través de la presentación de diversos proyectos e investigaciones que aportan a cada una de las líneas de investigación y necesidades de la sociedad. La organización de este evento internacional ha estado a cargo de la Universidad Tecnológica de Panamá (UTP), Centro Regional de Chiriquí, el Grupo de Investigación en Tecnologías Computacionales Emergentes - GITCE y la Facultad de Ingeniería de Sistemas Computacionales, con el apoyo financiero de la Secretaría Nacional de Ciencia, Tecnología e Innovación (SENACYT), que año tras año confía en la labor que desarrollamos en esta casa de estudio. David, Chiriquí, Rep. de Panamá 12 al 14 de septiembre de 201