Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Wind Turbine Machine Models01:24

Wind Turbine Machine Models

206
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
206
Faraday Disk Dynamo01:23

Faraday Disk Dynamo

2.5K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
2.5K
DC Generator01:19

DC Generator

1.0K
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...
1.0K
Electric Generator: Alternator01:25

Electric Generator: Alternator

2.6K
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.
The magnetic flux passing through the coil varies sinusoidally as the loop rotates inside the magnetic field. This...
2.6K
Generator Voltage Control01:21

Generator Voltage Control

237
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,...
237
Generation of Three-Phase Voltage01:21

Generation of Three-Phase Voltage

465
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...
465

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Antimicrobial Activity, Mechanism, and Future Prospects of Baicalin as an Antimicrobial Agent and Adjuvant.

Archiv der Pharmazie·2026
Same author

Reprogrammable Bistable Metasurface for Arbitrary Electromagnetic Wave Manipulation.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Lab-on-a-disc biosensing platform for folate level quantification.

Nature biomedical engineering·2026
Same author

Smart textiles for personalized healthcare.

Nature electronics·2026
Same author

From Health to Environment: Exploring the Associations Among Health Status, Health-Related Lifestyle, and Campus Environment in Chinese Universities.

Healthcare (Basel, Switzerland)·2026
Same author

Author Correction: Acoustic metamaterials-driven transdermal drug delivery for rapid and on-demand management of acute disease.

Nature communications·2026

Related Experiment Video

Updated: Sep 2, 2025

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

25.5K

A Soft Magnetoelastic Generator for Wind-Energy Harvesting.

Xun Zhao1, Ardo Nashalian1, Il Woo Ock1

  • 1Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA.

Advanced Materials (Deerfield Beach, Fla.)
|August 3, 2022
PubMed
Summary

A new magnetoelastic generator harvests wind energy using the giant magnetoelastic effect. This waterproof technology converts wind into electricity and can sustainably power electronics and split water for hydrogen production.

Keywords:
giant magnetoelasticitymagnetoelastic generatorssustainabilitywater splittingwind-energy harvesting

More Related Videos

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal
10:39

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal

Published on: January 15, 2016

12.6K
Magnetic Adjustment of Afterload in Engineered Heart Tissues
09:40

Magnetic Adjustment of Afterload in Engineered Heart Tissues

Published on: May 5, 2020

6.0K

Related Experiment Videos

Last Updated: Sep 2, 2025

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

25.5K
Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal
10:39

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal

Published on: January 15, 2016

12.6K
Magnetic Adjustment of Afterload in Engineered Heart Tissues
09:40

Magnetic Adjustment of Afterload in Engineered Heart Tissues

Published on: May 5, 2020

6.0K

Area of Science:

  • Materials Science
  • Renewable Energy Engineering
  • Physics

Background:

  • Global energy crises and climate change necessitate sustainable energy solutions.
  • Wind energy is a widely available renewable resource.
  • Existing wind energy technologies face limitations in certain environments.

Purpose of the Study:

  • To introduce a novel wind-energy-harvesting technology based on magnetoelastic generators.
  • To demonstrate the conversion of wind energy into electricity via electromagnetic induction.
  • To assess the system's performance and potential applications.

Main Methods:

  • Utilized a soft composite system exhibiting the giant magnetoelastic effect.
  • Developed magnetoelastic generators that convert wind-induced mechanical deformation into electrical energy.
  • Tested the system's performance under ambient natural wind conditions.

Main Results:

  • Achieved a low internal impedance (68 Ω), high current density (1.17 mA cm⁻²), and power density (0.82 mW cm⁻²).
  • Demonstrated sustainable power for small electronics and electrolytic water splitting.
  • Generated hydrogen at a rate of 7.5 × 10⁻² mL h⁻¹ at 20 m s⁻¹ wind speed.
  • Confirmed intrinsic waterproof capabilities and stable operation in harsh environments.

Conclusions:

  • The magnetoelastic generator offers a new, versatile approach to wind energy harvesting.
  • The technology shows significant potential for the hydrogen economy and sustainable energy solutions.
  • Its waterproof nature and stability in harsh conditions broaden its applicability.