Electrical Measurement. Characterization of a fluorescent lamp and power factor correction. Construction, characterization, with final verification of a single-phase transformer (50 VA).
Knowing how to use the main instruments present in a laboratory for electrical engineering.
Knowing how to check the requirements of safety and reliability of apparatus and electrical systems.
At the end of the course the student is able to understand and use the
main instruments present in a laboratory for electrical installations and
electrical, simulate and analyze the electrical circuits through the use of
software.
Prerequisites
Physics II
Electric Circuits
Teaching Methods
Lectures with the aid of handouts provided by the teacher.
Laboratory exercises.
Design projects by students, assisted by the teacher.
intermediate tests
Evaluation of project works also through oral discussion.
Oral examination.
Course program
International System for Units. Setting a Measurement and Interpretation of Results. Measurement uncertainty. Laboratory samples, traceability of calibration.
Computer simulation of electrical and electronic circuits. Procedure
Simulation: Simulation with broad signals, small signal simulation,
behavior of the open loop system, the details of the study
commutations. Analysis-oriented circuit simulator (PSPICE). Simulators
oriented to the resolution of equations of operation (MATLAB). Techniques
resolution in the time domain. Work and Fourier analysis. Analysis
distorted regime.
Characterization of a fluorescent lamp and power factor correction. Measurement of the resistance of the reactor. Measurement of the impedance of the reactor at 50 Hz to 50 Hz Determination of the reactance Carryover of the parameters at the operating temperature. Measure of the current and lamp voltage, the voltage of the reactor and the power absorbed. Harmonic analysis of voltage and current consumption. Measurement of the current and voltage of ignition. Determination of power factor correction and its insertion. Harmonic analysis of voltage and current input with power factor correction system.
Construction, characterization, with final verification of a single-phase transformer (50 VA). Measurement of winding resistance. Measurement of voltage ratio at no load. No-load test.
Tracking of the graphs relating to the current, power and power factor in relation to the supply voltage in the load test. Short-circuit test. Tracking of the graphs relating to the voltage, power and power factor in relation to the supply current in the short circuit test. Separation of losses in the copper and reporting parameters at operating temperature. Determination by calculation of the efficiency and voltage drop. Experimental verification of the efficiency and voltage drop. Tracking of the graphs relating to the yield and the voltage drop as a function of the load.
Characterization of a three-phase induction motor. Measurement of winding resistance. No-load test (with separation of iron losses and mechanical). Short-circuit test. Determination of the equivalent parameters and carry the same operating temperature. Tracing the circular chart.
Inrush currents and power factor correction of three-phase asynchronous motors. Measurement of current, voltage and power consumption at load. Harmonic analysis of voltage and current consumption. Measure current and voltage surge. Determination of power factor correction and its insertion. Harmonic analysis of voltage and current input with power factor correction system.