13 research outputs found
Wind Power
This book is the result of inspirations and contributions from many researchers of different fields. A wide verity of research results are merged together to make this book useful for students and researchers who will take contribution for further development of the existing technology. I hope you will enjoy the book, so that my effort to bringing it together for you will be successful. In my capacity, as the Editor of this book, I would like to thanks and appreciate the chapter authors, who ensured the quality of the material as well as submitting their best works. Most of the results presented in to the book have already been published on international journals and appreciated in many international conferences
A Review of Resonant Converter Control Techniques and The Performances
paper first discusses each control technique and then gives experimental results and/or performance to highlights their merits. The resonant converter used as a case study is not specified to just single topology instead it used few topologies such as series-parallel resonant converter (SPRC), LCC resonant converter and parallel resonant converter (PRC). On the other hand, the control techniques presented in this paper are self-sustained phase shift modulation (SSPSM) control, self-oscillating power factor
control, magnetic control and the H-∞ robust control technique
Decision support for participation in electricity markets considering the transaction of services and electricity at the local level
[EN] The growing concerns regarding the lack of fossil fuels, their costs, and their
impact on the environment have led governmental institutions to launch energy
policies that promote the increasing installation of technologies that use
renewable energy sources to generate energy. The increasing penetration of
renewable energy sources brings a great fluctuation on the generation side,
which strongly affects the power and energy system management. The control of
this system is moving from hierarchical and central to a smart and distributed
approach. The system operators are nowadays starting to consider the final end users (consumers and prosumers) as a part of the solution in power system
operation activities. In this sense, the end-users are changing their behavior from
passive to active players. The role of aggregators is essential in order to empower
the end-users, also contributing to those behavior changes. Although in several
countries aggregators are legally recognized as an entity of the power and energy
system, its role being mainly centered on representing end-users in wholesale
market participation.
This work contributes to the advancement of the state-of-the-art with
models that enable the active involvement of the end-users in electricity markets
in order to become key participants in the management of power and energy
systems. Aggregators are expected to play an essential role in these models,
making the connection between the residential end-users, electricity markets,
and network operators. Thus, this work focuses on providing solutions to a wide
variety of challenges faced by aggregators.
The main results of this work include the developed models to enable
consumers and prosumers participation in electricity markets and power and
energy systems management. The proposed decision support models consider
demand-side management applications, local electricity market models,
electricity portfolio management, and local ancillary services.
The proposed models are validated through case studies based on real data.
The used scenarios allow a comprehensive validation of the models from
different perspectives, namely end-users, aggregators, and network operators.
The considered case studies were carefully selected to demonstrate the characteristics of each model, and to demonstrate how each of them contributes
to answering the research questions defined to this work.[ES] La creciente preocupación por la escasez de combustibles fósiles, sus costos
y su impacto en el medio ambiente ha llevado a las instituciones
gubernamentales a lanzar políticas energéticas que promuevan la creciente
instalación de tecnologías que utilizan fuentes de energía renovables para
generar energía. La creciente penetración de las fuentes de energía renovable trae
consigo una gran fluctuación en el lado de la generación, lo que afecta
fuertemente la gestión del sistema de potencia y energía. El control de este
sistema está pasando de un enfoque jerárquico y central a un enfoque inteligente
y distribuido. Actualmente, los operadores del sistema están comenzando a
considerar a los usuarios finales (consumidores y prosumidores) como parte de
la solución en las actividades de operación del sistema eléctrico. En este sentido,
los usuarios finales están cambiando su comportamiento de jugadores pasivos a
jugadores activos. El papel de los agregadores es esencial para empoderar a los
usuarios finales, contribuyendo también a esos cambios de comportamiento.
Aunque en varios países los agregadores están legalmente reconocidos como una
entidad del sistema eléctrico y energético, su papel se centra principalmente en
representar a los usuarios finales en la participación del mercado mayorista.
Este trabajo contribuye al avance del estado del arte con modelos que
permiten la participación activa de los usuarios finales en los mercados eléctricos
para convertirse en participantes clave en la gestión de los sistemas de potencia
y energía. Se espera que los agregadores desempeñen un papel esencial en estos
modelos, haciendo la conexión entre los usuarios finales residenciales, los
mercados de electricidad y los operadores de red. Por lo tanto, este trabajo se
enfoca en brindar soluciones a una amplia variedad de desafíos que enfrentan los
agregadores.
Los principales resultados de este trabajo incluyen los modelos
desarrollados para permitir la participación de los consumidores y prosumidores
en los mercados eléctricos y la gestión de los sistemas de potencia y energía. Los
modelos de soporte de decisiones propuestos consideran aplicaciones de gestión
del lado de la demanda, modelos de mercado eléctrico local, gestión de cartera
de electricidad y servicios auxiliares locales.
Los modelos propuestos son validan mediante estudios de casos basados en
datos reales. Los escenarios utilizados permiten una validación integral de los
modelos desde diferentes perspectivas, a saber, usuarios finales, agregadores y
operadores de red. Los casos de estudio considerados fueron cuidadosamente
seleccionados para demostrar las características de cada modelo y demostrar
cómo cada uno de ellos contribuye a responder las preguntas de investigación
definidas para este trabajo
A Review of Resonant Converter Control Techniques and The Performances
paper first discusses each control technique and then gives experimental results and/or performance to highlights their merits. The resonant converter used as a case study is not specified to just single topology instead it used few topologies such as series-parallel resonant converter (SPRC), LCC resonant converter and parallel resonant converter (PRC). On the other hand, the control techniques presented in this paper are self-sustained phase shift modulation (SSPSM) control, self-oscillating power factor
control, magnetic control and the H-∞ robust control technique
State-Feedback Controller Based on Pole Placement Technique for Inverted Pendulum System
This paper presents a state space control technique for inverted pendulum system using simulation and real experiment via MATLAB/SIMULINK software. The inverted pendulum is difficult system to control in the field of control engineering. It is also one of the most important classical control system problems because of its nonlinear characteristics and unstable system. It has three main problems that always appear in control application which are nonlinear system, unstable and non-minimumbehavior
phase system. This project will apply state feedback controller based on pole placement technique which is capable in stabilizing the practical based inverted pendulum at vertical position. Desired design specifications which are 4 seconds settling time and 5 % overshoot is needed to apply in full state feedback controller based on pole placement technique. First of all, the mathematical model of an inverted pendulum system is derived to obtain the state space representation of the system. Then, the design phase of the State-Feedback Controller can be conducted after linearization technique is
performed to the nonlinear equation with the aid of mathematical aided software such as Mathcad. After that, the design is simulated using MATLAB/Simulink software. The controller design of the inverted pendulum system is verified using simulation and experiment test. Finally the controller design is compared with PID controller for benchmarking purpose
OBSERVER-BASED-CONTROLLER FOR INVERTED PENDULUM MODEL
This paper presents a state space control technique for inverted pendulum system. The system is a common classical control problem that has been widely used to test multiple control algorithms because of its nonlinear and unstable behavior. Full state feedback based on pole placement and optimal control is applied to the inverted pendulum system to achieve desired design specification which are 4 seconds settling time and 5% overshoot. The simulation and optimization of the full state feedback controller based on pole placement and optimal control techniques as well as the performance comparison between these techniques is described comprehensively. The comparison is made to choose the most suitable technique for the system that have the best trade-off between settling time and overshoot. Besides that, the observer design is analyzed to see the effect of pole location and noise present in the system
State-Feedback Controller Based on Pole Placement Technique for Inverted Pendulum System
This paper presents a state space control technique for inverted pendulum system using simulation and real experiment via MATLAB/SIMULINK software. The inverted pendulum is difficult system to control in the field of control engineering. It is also one of the most important classical control system problems because of its nonlinear characteristics and unstable system. It has three main problems that always appear in control application which are nonlinear system, unstable and non-minimumbehavior
phase system. This project will apply state feedback controller based on pole placement technique which is capable in stabilizing the practical based inverted pendulum at vertical position. Desired design specifications which are 4 seconds settling time and 5 % overshoot is needed to apply in full state feedback controller based on pole placement technique. First of all, the mathematical model of an inverted pendulum system is derived to obtain the state space representation of the system. Then, the design phase of the State-Feedback Controller can be conducted after linearization technique is
performed to the nonlinear equation with the aid of mathematical aided software such as Mathcad. After that, the design is simulated using MATLAB/Simulink software. The controller design of the inverted pendulum system is verified using simulation and experiment test. Finally the controller design is compared with PID controller for benchmarking purpose
Real-Time Optimal Control Technique of A Rotary Inverted Pendulum System
This paper presents a real time control technique to stabilize inverted pendulum in the vertical upright
position. Stabilize the inverted pendulum is a classical control problem that could be related to some
problems in industrial applications. Two common problems that always been encountered by inverted
pendulum system is unstable behavior and nonlinear. This lead to numerous studies on the control
algorithm to balance the inverted pendulum system in the vertical upright position. Generally, inverted
pendulum is mounted on DC motor and is equipped with sensor to measure angular displacement.
Inverted pendulum has the same analogy with human that try to balance a broomstick using fingertip.
Balancing the Inverted Pendulum requires a good control system. Therefore an optimal control
technique is proposed to achieve desired design requirement which are less than 5% overshoot and
less than 5 seconds settling time. The controller is optimized to achieve the best performance result.
Finally the performance of the controller is compared with PID controller as a benchmark
A SIMULATION STUDY OF STATE-FEEDBACK CONTROL METHOD FOR ELECTRO HYDRAULIC SERVO MODEL
Electro hydraulic servo system is used by many industries due to its ability to impart large forces.
It also has advantage in term of fast response and robustness. The electro hydraulic system suffered
from errors of the transient response which are steady state error, settling time and the ripples. It
is crucial to design a controller for the system to ensure the reliability of the system. Aiming at the
characteristic of the system, steady state feedback control method is designed to compensate the
error. The analysis of the system is done based on the transient response specifically on the actuator
part. MATLAB Simulink is used as the simulation software to evaluate the force performance of
state feedback controller method. The steady state error, settling time and ripple are observed and
recorded for each controller. Three methods is applied, which are full feedback, state feedback with
feed forward and integral control are compared with proportional, integral and derivatives (PID)
controller. The result of each controller shows the differences performance. Based on the simulation
results, the feedforward technique is found to be the best control technique for the electro hydraulic
servo system due to the requirement performance such as percent overshoot, settling time, rise time
and zero steady state error. This good result will directly benefit industries that use electro hydraulic
system as their actuator for production machines