Electric Power Converters

2016 ◽  
pp. 1-61
Keyword(s):  
Electric Power ◽  
Power Converters ◽  
Electrical Energy ◽  
Electrical Machines ◽  
The Other ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
The World ◽  
Energy Conversion Systems ◽  
Electrical Motors

In this book, we discuss reliability in electrical energy converters. The first step is introducing these devices and recognizing their main functions as well as their importance. Electrical energy conversion systems consist of two main parts: Electrical machines and Power electronic converters. Electrical machines are used for converting electrical energy to mechanical one in the generator state and vice-versa in the motor state. To emphasize the importance of these devices, it may be noted that electrical motors consume about half of the total generated electrical energy in the world. On the other hand, power electronic converters are essential equipments which are used for electrical energy conditioning. These equipments have observed considerable growth in modern industries in recent years. Because energy conditioning allows us to use energy with higher efficiency and better performance, in this chapter, importance of electric power converters in modern industries is presented. The aim of this presentation is showing the dependence of various industrial functions to conversion of electric power. Basic relations of various electrical machines as well as power electronic converters are presented. In each section, some typical industrial examples are presented. This background will be used in the next chapters for reliability calculation and improvement. In fact, this chapter is an introduction on reasons of writing an individual book about reliability of electric power converters.

scholarly journals Experimental Measurement of Conducted Emissions Generated by Static Converters in Common and Differential Modes

2021 ◽  
Vol 23 (3) ◽  
pp. 273-279
Author(s):  
Helima Slimani ◽  
Abdelhakim Zeghoudi ◽  
Abdelber Bendaoud ◽  
Abdeldjalil Reguig ◽  
Baghdadi Benazza ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Experimental Measurement ◽  
Experimental Measurements ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Static Converters ◽  
Energy Conversion Systems ◽  
Conducted Emissions

The commutation of semiconductors and their interactions with parasitic elements linked to the environment is known to be the main source of interferences conducted in power electronic converters. Thus, identifying these sources of interferences in commutation cells and determining the level of these conducted emissions generated in energy conversion systems presents a major challenge for designers. In this work, a study of the electromagnetic interferences (EMI) generated by the association of serial rectifier-chopper connected to a Line Impedance Stabilization Network (LISN) is proposed, in which a determination of these interferences is presented in both common and differential modes. All simulations are carried out using the LT-spice software and the results obtained are validated by experimental measurements realized at APELEC laboratory (University of Sidi Bel-Abbes, Algeria).

scholarly journals New Design of Quarry Gravitricity

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Samir REMLI ◽  
Djouama MOHAMED ◽  
Benselhoub AISSA ◽  
Rachid KHEBBAB ◽  
Nacereddine FELLOUH
Keyword(s):  
Third World ◽  
Electric Energy ◽  
Electrical Energy ◽  
The Other ◽  
Open Pit ◽  
Open Pit Mines ◽  
Environmental Consequences ◽  
The Third ◽  
The World ◽  
The Third World

The consumption of electric energy in open pit mines or quarries maybe can achieve the consumption of all inhabitants of a city which it is according to their size and production of ore. in the other hand, View that the demand crescent of energy electric in the world, the limits of energetic resources in the third world, the increase of prizes operation and the maintenance of classic energy, the environmental consequences of classic energy and the benefic for using the autonomy system for production of electricity incites for searching the other sources responds the demands, To do this, we propose in this work a system equipped by generator for the creation of electrical energy resulting from the traffic of trucks in open pit mines whom situated in mountainous reliefs as knows a new kind of gravitricity.

scholarly journals Efficiency analysis of photovoltaic systems

2020 ◽  
Vol 154 ◽  
pp. 05003
Author(s):  
Ewa Golisz ◽  
Krzysztof Korpysz ◽  
Olga Rutkowska ◽  
Szymon Głowacki ◽  
Andrzej Bryś
Keyword(s):  
Total Yield ◽  
Electrical Energy ◽  
Efficiency Analysis ◽  
Computational Method ◽  
The Other ◽  
Energy Yield ◽  
South West ◽  
The World ◽  
East West ◽  
Main Factor

The goal of the study was to analyse the efficiency of two existing photovoltaic micro-installations with the power of approx. 40 kWp. The main factor differing the two installations being analysed was the arrangement of modules in relation to the sides of the world, one is south-west and the other is east-west. The total yield of electrical energy in 2017 from the south-west installation was higher and amounted to 34980 kWh. For the east-west installation the amount of energy generated was equal to 31180 kWh. 4 methods of forecasting electrical energy yield were discussed. Simple computational method proved to be the best method for both installations.

scholarly journals Geographic and technical floating photovoltaic potential

2018 ◽  
Vol 22 (Suppl. 3) ◽  
pp. 831-841 ◽  
Author(s):  
Giuseppe Tina ◽  
Raniero Cazzaniga ◽  
Marco Rosa-Clot ◽  
Paolo Rosa-Clot
Keyword(s):  
Energy Demand ◽  
Electrical Energy ◽  
The Other ◽  
Solar Irradiation ◽  
Floating Structures ◽  
The World ◽  
Water Surfaces ◽  
Innovative Solution ◽  
Large Water ◽  
Photovoltaic Plants

The photovoltaic geographic potential (PVGP) is defined as the fraction of the solar irradiation received on the land available for a photovoltaic facility. The area of this usable land is calculated by a suitability factor which is determined by a variety of different geographical constraints. We extend this kind of analysis to floating photovoltaic (FPV) structures and consider the use of water surfaces with the same definitions and notations used to define the PVGP for systems installed on the ground. Results are very promising because of the large water surfaces available and because of the possibility to build floating structures which are more compact than land based photovoltaic plants. In fact, using just 1% of natural basins areas to install FPV plants, about 25% of the world electrical energy demand (in 2014) can be supplied. The PVGP is evaluated for two PVF raft geometries: one is a typical shed structure, the other is an innovative solution named gable.

scholarly journals Special Issue “Advances in Control of Power Electronic Converters”

2021 ◽  
Vol 11 (10) ◽  
pp. 4585
Author(s):  
Oswaldo Lopez-Santos ◽  
Germain Garcia
Keyword(s):  
Control Systems ◽  
Power Converters ◽  
State Of The Art ◽  
Industrial Applications ◽  
Power Electronic ◽  
Special Issue ◽  
Power Electronic Converters ◽  
And Control ◽  
Power Generation Systems ◽  
Proper Operation

The use of power converters has grown in the last years with the advances in photovoltaic and wind based power generation systems, and the progress in modern concepts such as microgrids and electric mobility. A consequence has been the development of devices allowing for the exchange of energy among different distribution buses, and feeding AC or DC loads from low DC voltage levels, whose proper operation is achieved by means of specialized control systems. Simultaneously, the power converters used for conventional industrial applications have evolved thanks to the application of new control methods, and the combination of these with well-established techniques. This special issue contributes theoretical and practical advances to the state-of-the-art field at the crossroads of power electronics and control systems. The seven included papers cover particular applications requiring either DC–DC, DC–AC or AC–DC conversion stages.

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