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Related Concept Videos

Van de Graaff Generator01:15

Van de Graaff Generator

Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
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Generator Voltage Control

Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand, use...
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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...
Electric Generator: Alternator01:25

Electric Generator: Alternator

Electric generators induce an emf by rotating a coil in a magnetic field. A simple alternator is an AC generator that creates electrical energy that varies sinusoidally with time. A simple alternator consists of a conducting loop that is placed inside a uniform magnetic field. The loop is connected to split rings connected to the external circuit with the help of brushes.
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Characterization of Anisotropic Leaky Mode Modulators for Holovideo
09:36

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Published on: March 19, 2016

A modular optically powered floating high voltage generator.

P Antonini1, E Borsato, G Carugno

  • 1Centro Ricerche E. Fermi, Piazza Viminale 1, 00184 Roma, Italy.

The Review of Scientific Instruments
|March 8, 2013
PubMed
Summary
This summary is machine-generated.

A modular high voltage (HV) system was developed using a laser-powered semiconductor cell. This innovative design enables fully floating HV generation and series module connection.

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Area of Science:

  • Electrical Engineering
  • Power Electronics
  • Semiconductor Devices

Background:

  • Traditional high voltage (HV) systems often face challenges with grounding and isolation.
  • Modular designs offer potential for scalability and improved safety in power generation.

Purpose of the Study:

  • To demonstrate the feasibility of a fully floating high voltage (HV) generation system.
  • To develop and test a prototype of a modular HV power supply.
  • To investigate the potential for series connection of HV modules.

Main Methods:

  • A modular HV system prototype was designed and constructed.
  • A high-efficiency semiconductor power cell, illuminated by a laser, served as the primary power source.
  • Direct current-direct current (DC-DC) conversion and a voltage multiplier were employed for HV generation.
  • The floating nature of modules was ensured by the laser-powered cell design.

Main Results:

  • The feasibility of fully floating HV generation was successfully demonstrated.
  • A functional prototype of the modular HV system was produced.
  • The capability for series connection of the HV modules was verified.
  • The laser-illuminated semiconductor power cell effectively provided a floating power source.

Conclusions:

  • The developed modular system offers a viable approach for fully floating high voltage generation.
  • The modular design and series connection capability present advantages for scalable HV applications.
  • This technology could impact fields requiring isolated high voltage sources.