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Related Concept Videos

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...
Energy Stored in Inductors01:16

Energy Stored in Inductors

An inductor is ingeniously crafted to accumulate energy within its magnetic field. This field is a direct result of the current that meanders through its coiled structure. When this current maintains a steady state, there is no detectable voltage across the inductor, prompting it to mimic the behavior of a short circuit when faced with direct current.
In terms of gauging the energy stored within an inductor, it is equivalent to the integral of the power delivered at every individual moment, all...
Inductor in an AC Circuit01:16

Inductor in an AC Circuit

The basic components of an inductor are coils or loops of wire that are either wound around a hollow tube former or a ferromagnetic material (iron-cored) to increase their inductive value or inductance. When a voltage is applied across an inductor's terminals, a magnetic field is created, where the inductor stores its energy. The inductor's own self-induced or back emf value controls the growth of the current flowing through it.  This back emf voltage is proportional to the rate of variation of...
Capacitor in an AC Circuit01:23

Capacitor in an AC Circuit

A capacitor is charged by passing an electric current through it, which causes the plates to start accumulating an electrostatic charge. Since the strength of the charging current is maximum when the capacitor plates are uncharged and gradually decreases exponentially until the capacitor is fully charged, the charging process is neither instantaneous nor linear. The property of a capacitor to store a charge on its plates is called its capacitance.
Consider a purely capacitive circuit consisting...
Generator Voltage Control01:21

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...
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.

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Related Experiment Video

Updated: Jun 12, 2026

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
06:04

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

Inductor-capacitor gain cell-based non-isolated high step-up converter for DC microgrid.

M Prabhakar1, Amaleswari Rajulapati2, A Sudha3

  • 1Centre for Smart Grid Technologies, Vellore Institute of Technology, Chennai Campus, Chennai, India. prabhakar.m@vit.ac.in.

Scientific Reports
|June 10, 2026
PubMed
Summary

This study introduces a novel two-stage DC-DC converter achieving an ultra-high voltage gain of 20. The design reduces switch voltage stress and is ideal for DC microgrid applications.

Keywords:
DC microgridsDC-DC convertersPower conversionPower electronics

Related Experiment Videos

Last Updated: Jun 12, 2026

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
06:04

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

Area of Science:

  • Electrical Engineering
  • Power Electronics

Background:

  • High-gain DC-DC converters are crucial for renewable energy integration and DC microgrids.
  • Classical boost converters face limitations in achieving very high voltage gains efficiently and with reduced switch stress.

Purpose of the Study:

  • To propose and validate a novel two-stage DC-DC converter with an ultra-step-up voltage gain.
  • To reduce voltage stress on semiconductor switches.
  • To demonstrate suitability for DC microgrid applications.

Main Methods:

  • A two-stage converter topology is synthesized, combining a modified boost stage with an inductor-capacitor gain cell.
  • A voltage gain extension technique is applied to reduce switch voltage stress.
  • Experimental validation using a 20V to 400V, 200W prototype.

Main Results:

  • Achieved an ultra-step-up voltage gain of 20 (20V to 400V).
  • Demonstrated high full-load efficiency of 94.5%.
  • Reduced maximum voltage stress on switches to 10% of the output voltage.
  • Ensured stable output voltage regulation and smooth, ripple-free input current.

Conclusions:

  • The proposed converter effectively achieves ultra-high voltage gain with reduced switch stress.
  • The design offers stable voltage regulation and efficient power conversion.
  • The converter is well-suited for DC microgrid applications due to its performance and features.