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Generation of Three-Phase Voltage01:21

Generation of Three-Phase Voltage

A three-phase AC generator has a rotor with a rotating magnet placed within the stator mounted with the stationary three-phase winding to generate three-phase voltages via mutual induction. These windings are evenly distributed around the inner circumference of the stator and are arranged 120 electrical degrees apart. Three-phase stator windings consist of three separate coils or groups of coils, known as phases, each connected in Y (star) configuration or Delta configuration.
As the rotor...
Sinusoidal Sources01:18

Sinusoidal Sources

Direct current (DC) refers to an electric current that flows in a single direction, maintaining a constant polarity. This is in contrast to alternating current (AC), which periodically changes its direction and magnitude. AC forms the backbone of modern electricity transmission and distribution systems due to its efficient long-distance transmission capabilities.
In homes, the power supplies use sinusoidal sources to provide electricity. These sources generate a voltage that varies sinusoidally...
Graphical and Analytic Representation of Sinusoids01:20

Graphical and Analytic Representation of Sinusoids

Analyzing two sinusoidal voltages with equal amplitude and period but different phases on an oscilloscope, an instrument used to display and analyze waveforms, involves a three-step process.
The first step is measuring the peak-to-peak value, which is twice the amplitude of the sinusoid. This provides information about the maximum voltage swing of the waveform.
Secondly, the period and angular frequency are determined. The period is the time taken for one complete cycle of the waveform, while...
DC Generator01:19

DC Generator

An alternator converts mechanical energy into electrical energy that varies sinusoidally, resulting in AC current. Meanwhile, a DC generator converts mechanical energy into electrical energy, which are DC pulses with the same polarity. The construction of a DC generator is similar to that of an alternator, except that the pair of slip rings is replaced by a single split ring, also called a commutator. The commutator functions like a periodic rotary switch; it changes the contacts with the...
Half wave rectifier01:20

Half wave rectifier

A half-wave rectifier is a fundamental circuit in electronics, designed to convert alternating current (AC) voltage into a unidirectional voltage. It utilizes the simplest form of diode rectification, where the circuit comprises a single diode in series with a load resistor and an AC power source.
Voltage Doubler Circuit01:23

Voltage Doubler Circuit

A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.

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Related Experiment Videos

Proposition to build a digitally controlled biphase sinusoidal generator.

Jean Bayard1

  • 1GREYC (CNRS UMR6072), ENSICAEN, 14050 Caen Cedex, France. jean.bayard@unicaen.fr

The Review of Scientific Instruments
|June 8, 2007
PubMed
Summary

A novel digital method creates a biphase sinusoidal generator with digitally controlled amplitude, frequency, and phase. Prototype measurements validate the analytical calculations for precise signal generation.

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Area of Science:

  • Electrical Engineering
  • Signal Processing

Background:

  • Sinusoidal generators are fundamental in electronics.
  • Precise control over signal parameters like phase is often required.

Purpose of the Study:

  • To introduce a new method for building a digitally controlled biphase sinusoidal generator.
  • To enable independent control of amplitude, frequency, and phase for two output signals.

Main Methods:

  • Development of a novel digital control architecture.
  • Implementation of a prototype biphase sinusoidal generator.
  • Analytical calculation and experimental validation.

Main Results:

  • The proposed method successfully generates two sinusoidal signals with digitally controlled parameters.
  • v(1)=V(m) sin (omegat) and v(2)=V(m) sin (omegat+phi) were achieved.
  • Experimental measurements confirmed the accuracy of the analytical models.

Conclusions:

  • The new method provides a flexible and accurate approach to biphase sinusoidal signal generation.
  • The digital control facilitates precise phase adjustments, crucial for various applications.
  • The validated prototype demonstrates the practical feasibility of the proposed technique.