Papers by Manuel Pérez Donsión
This paper deals with the effects of voltage harmonics on losses and temperature rise of a three-... more This paper deals with the effects of voltage harmonics on losses and temperature rise of a three-phase squirrel cage induction motor. The paper describes measurement method for temperature and losses when the motor is fed with a rated fundamental voltage plus any harmonics from an AC power source with a programmable voltage waveform. Experimental results both of temperature and losses concerning several operating conditions are presented.
En este articulo se trata de analizar la situacion actual de la calidad de potencia en los sistem... more En este articulo se trata de analizar la situacion actual de la calidad de potencia en los sistemas de energia electrica y, a partir de ella, considerando la evolucion continuada de los semiconductores de potencia, tanto en sus caracteristicas como en la reduccion de precio a que conducira su utilizacion masiva, plantear las perspectivas futuras que se pueden prever en este campo
With three awards-recognitions over a six-year research period in the field of Engineering and Co... more With three awards-recognitions over a six-year research period in the field of Engineering and Communication Engineering, Computation, and Electronics, by the National Assessment Commission of the Research Activity of the Spanish Ministry of Education and Science (CNEAI), he is the author of nearly 100 JCR research articles, and is an attendant of multiple conferences and international research meetings (e.g., chairman and speaker in the main track), which are the result of his participation and leadership in a number of nearly 20 research projects and 40 research contracts with international companies. During his career, he has also visited and attended universities (invited professor), research institutes, and companies in France, Switzerland, Italy, and Spain. He is currently the assistant director for Strategic Planning and Postgraduate Studies in the Higher Polytechnic Engineering School of Algeciras, where he has served as the academic secretary and is responsible for students' training in companies. He is the main researcher and the founder of the Research Group in the Computational Instrumentation and Industrial Electronics (PAIDI-TIC-168), one of the most important in its disciplines among Andalusian, and is responsible for the creation of the Research Institute of Energy Engineering and Sustainability at the University of Cádiz, and the for the accreditation of the doctorate program with the same name. His research line is summarized as "Computational Intelligence and Statistical Signal Processing for Smart Measurement Systems". More precisely, his research interests include instrumentation for Industry 4.0, power quality (PQ), statistical signal processing, measurement methods, and higher-order statistics (HOS). Regarding membership, he belongs to the following associations (among others): IEEE Senior Member
Energies, 2020
We are immersed in the so-called digital energy network, continuously introducing new technologic... more We are immersed in the so-called digital energy network, continuously introducing new technological advances for a better way of life. As a consequence, numerous emerging words are relevant to this point: Internet of Things (IoT), big data, smart cities, smart grid, industry 4.0, etc. To achieve this formidable goal, systems should work more efficiently, a fact that inevitably leads to power quality (PQ) assurance. Apart from its economic losses, a bad PQ implies serious risks for machines and, consequently, for people. Many researchers are endeavouring to develop new analysis techniques, instruments, measurement methods, and new indices and norms that match and fulfil the requirements regarding the current operation of the electrical network. This book, and its associated Special Issue, offer a compilation of some of the recent advances in this field. The chapters range from computing to technological implementation, going through event detection strategies and new indices and meas...
Renewable Energy and Power Quality Journal, 2018
Renewable Energy and Power Quality Journal, 2003
The main objective of this paper consists on showing the results of the final career project made... more The main objective of this paper consists on showing the results of the final career project made in the Industrial Engineering University of Vigo and with the cooperation of a Spanish electric distribution company (Unión Fenosa), to study voltage sags and short interruptions. First, a review about some of the methods that can be applied in an industrial installation to get a satisfactory operation in any electromagnetic environment with the presence of voltage sags or short interruptions will be showed in an abridged way. Moreover, a voltage sags and short interruptions measures analysis was also made, using a series of samples registered by a distribution utility in different places along the geography of Galicia, between the years 1999 and 2002, to characterize this events, as well as search and guess the future tendencies to improve power quality in the distribution networks and, finally, establish the corresponding conclusions.
Renewable Energy and Power Quality Journal, 2008
The paper is related to the problem of creating stepped waveforms by use the generalized Fourier ... more The paper is related to the problem of creating stepped waveforms by use the generalized Fourier series. This method can be applied especially in power electronics as a tool permitting to reach AC voltage waveforms approximated to the sine wave shape. This novel approach to the synthesis of AC voltage waveforms is based on Fourier series of orthogonal functions set. Applying analytical methods and expressions given in the paper it is possible to define such optimal parameters of the waveform in order to receive the lowest harmonics content. The presented mathematical tool is very useful in designing structures and control algorithms of multilevel converters.
Renewable Energy and Power Quality Journal, 2008
Renewable Energy and Power Quality Journal, 2009
The aim of this paper is to measure the quality of power coming from the wind power plant to the ... more The aim of this paper is to measure the quality of power coming from the wind power plant to the electrical distribution network. The quality of electrical energy includes many parameters but the main thesis target is to measure a harmonic frequency of current. I used the program Matlab for the simulation of the connection between the wind power plant and the electrical network. I simulated startup of the wind turbine and changes of wind flowing. Obtained data were plotted on graphs which show harmonic frequencies of current based on these changes.
Renewable Energy and Power Quality Journal, 2010
This paper focuses on the evaluation of the economic consequences of a lack of power quality in t... more This paper focuses on the evaluation of the economic consequences of a lack of power quality in the industrial sector. The term Power Quality includes, in general, a set of boundary conditions which allow electrical systems connected to the grid to function in their intended manner, without significant loss of performance or life. Therefore, the operation of the power system outside these boundaries directly impacts on the economic performance of the whole system. The evaluation of the economical loses derived of this fact has been matter of several studies, mostly applied to individual cases, with calculation methodologies either too complicated to be applicable, either needing a large input of data most dealing with confidentiality issues or either based on particular cases and impossible to extrapolate. The methodology proposed in this paper is relativelly easy to apply, covers a large range of cases and is based on data directly retrieved from estatistics of the Spanish government free downladable and free of confidentiality issues. An example of the application of this methodology and an analysis of the results is also provided.
Renewable Energy and Power Quality Journal, 2010
This paper addresses some of the effects of running an electric motor near and in the saturation ... more This paper addresses some of the effects of running an electric motor near and in the saturation zone of the electromagnetic hysteresis curve, namely mechanical effects such as mechanical vibrations and rotation speed apart from the classic electrical and thermal effects. Mechanical vibrations are intrinsically characteristic of rotating machines, and other turbomachine characteristics, such as rotor unbalance, nonlinearity and shaft variable stiffness can introduce severe disturbances in the operation of the machine. Rotation speed is also affected by electric parameters, when the mechanical machine is connect to an electric machine, meaning both the electric machine type and the process by which it is driven affects both the value of speed and its constancy.
Renewable Energy and Power Quality, 2016
From an analysis of electric energy consumption of different buildings of the University of Vigo,... more From an analysis of electric energy consumption of different buildings of the University of Vigo, it has been designed the integration of a microgrid and its elements, distributed generation, energy storage, security and control systems and applications of a Smart Campus. Distributed generation of electricity is based on the integration of renewable energy sources, especially solar photovoltaic and wind energies, aided by the installation of a hydrogen fuel cell, which is produced out of energetic overproduction of the aforementioned sources by two electrolyzers. In order to avoid the consequences of randomness of wind and solar sources, an energy storage system has been installed. It stores hydrogen produced when overproduction takes place, in order to be able to transform it into electricity when power needs of the microgrid demand it, through a hydrogen fuel cell. Generation and energy storage will be regulated by a security and control system, which will also be responsible for the management and integration of several apps of the Smart Campus. Besides, the implementation in the microgrid of these different apps of the Smart campus, charging spots for electrical cars, parking management, and replacement of conventional lighting by an intelligent and independent system based on renewable energy will be taken into consideration in this study.
Renewable Energy and Power Quality Journal, 2017
Finite element analysis is widely used in engineering, and has for some time been used in modelli... more Finite element analysis is widely used in engineering, and has for some time been used in modelling the behaviour of an induction motor. Limitations and challenges of this approach will be addressed over a case-study commercial 0,37 kW, 4-pole squirrel-cage induction motor simulated using two-dimensional software FEMM. A few notes on the consideration of rotor skew and harmonic distortion in such a model are also included.
The International Journal of Acoustics and Vibration, 2017
This work presents a model-based algebraic approach to robust parameter estimation in uncertain d... more This work presents a model-based algebraic approach to robust parameter estimation in uncertain dynamics rotating machinery. The approach evades some mathematical intricacies of the traditional stochastic methods, proposing an affordable Jeffcott-model-based scheme with several easy-to-implement computational advantages for processing a real-world rotor frequency response or orbit. Therefore, it takes out the dynamic parameters from one of the orbit's resonant humps when the multistage rotor orbit shape behaves closely to the Jeffcott-model orbit. This occurs for a valuable array of cases. The approach applies the spatial 2-norm looking forward to the correlation between the analytical Jeffcott-orbit model and the experimental rotor's orbit hump, handling the normalized frequency ratio. Experimental results are also included to face this method with real-world rotating machinery orbits.
Renewable Energy and Power Quality Journal, 2006
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Papers by Manuel Pérez Donsión