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Development of a water quality index using a fuzzy logic: A case study for the sorocaba river
(2010-11-25)
Due to growing urbanization and industrialization, the environment is suffering from pollution of rivers, degradation of soils and deteriorated air quality. Quality indices appear to be useful to evaluate the conditions ...
Robust control applied to power flow control in single-phase inverter with LCL filter, using droop control and D-stability
(2012-12-01)
This paper proposes a new methodology to control the power flow between a distributed generator (DG) and the electrical power distribution grid. It is used the droop voltage control to manage the active and reactive power. ...
Control of three-phase PWM boost rectifiers using proportional-resonant controllers
(2018-06-25)
Voltage-oriented vector control (VOC) using proportional-integral controllers is an attractive control method for three-phase PWM rectifiers, due to relative ease of implementation, being one of the most used methods. ...
Inversor CS Boost monofásico em aplicações com fontes renováveis
(2010-12-01)
This paper presents a new methodology for the operation and control of a single-phase current-source (CS) Boost Inverter, considering that the conventional current-source inverter (CSI) has a right-half-plane (RHP) zero ...
Wavelets in the computed evaluation of mammographic accreditation phantom images
(2013-04-16)
This paper presents a novel approach to the computed assessment of a mammographic phantom device. The approach shown here is fully automated and is based on the automatic selection of the region of interest, in the use of ...
Cooperative control of power quality compensators in microgrids
(2021-04-01)
This paper proposes a consensus-based distributed control scheme, augmented by the conservative power theory for compensating imbalance and harmonics at the Common Connection Point (PCC). The consensus algorithm allows to ...
Image quality evaluation of chest for computed radiography
(2013-04-16)
The daily-to-day of medical practice is marked by a constant search for an accurate diagnosis and therapeutic assessment. For this purpose the doctor serves up a wide variety of imaging techniques, however, the methods ...
Bond tests and on-site structural concrete quality control
(2010-01-01)
Quality control of structural concrete has been conducted for decades using the axial compression test. The Pull-Out Bond test is suggested here as an alternative to the axial compression test of concrete. Well known and ...
AC-DC three-phase multipulse converter with boost DC-DC stage and constant hysteresis control
(2011-12-28)
This work proposes a new three-phase multipulse rectifier based on the delta autotransformer connection with DC-DC Boost stages and constant hysteresis control which has the objective of providing a reliable DC bus for ...
Analysis of quality in Brazilian e-commerce (B2C)
(Springer-verlag Berlin, 2010-12-14)
The business world has changed the way how people think and act on products and services. In this context, the most recent amendment of the scenarios of retail operations has been the use of technology in sales and ...