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

Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

3.0K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
3.0K
Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

5.1K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
5.1K
Induced Electric Fields: Applications01:27

Induced Electric Fields: Applications

1.9K
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
1.9K
Induced Electric Fields01:23

Induced Electric Fields

4.0K
The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...
4.0K
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

5.1K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
5.1K
Induced Electric Dipoles01:28

Induced Electric Dipoles

4.4K
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
4.4K

You might also read

Related Articles

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

Sort by
Same author

Single-Shunt Measurement of Three-Phase Currents for a Three-Level Inverter under the Low Modulation Index Operation.

Sensors (Basel, Switzerland)·2022
Same author

3D Platform for Coupling Coefficient Evaluation of an Inductive Power Transfer Systems.

Sensors (Basel, Switzerland)·2022
Same author

Magnetic Flux Density Measurement Platform for an Inductive Wireless Power Transmitter Coil Design.

Sensors (Basel, Switzerland)·2022
Same author

Sensitivity and Accuracy of Dielectric Measurements of Liquids Significantly Improved by Coupled Capacitive-Dependent Quartz Crystals.

Sensors (Basel, Switzerland)·2021
Same author

Extracting the Resistive Current Component from a Surge Arrester's Leakage Current without Voltage Reference.

Sensors (Basel, Switzerland)·2021
Same author

Detection Principles of Temperature Compensated Oscillators with Reactance Influence on Piezoelectric Resonator.

Sensors (Basel, Switzerland)·2020
Same journal

RETRACTED: Zhang et al. A Novel Framework for Reconstruction and Imaging of Target Scattering Centers via Wide-Angle Incidence in Radar Networks. <i>Sensors</i> 2025, <i>25</i>, 6802.

Sensors (Basel, Switzerland)·2026
Same journal

Enhancing Unsupervised Multi-Source Domain Adaptation for Person Re-Identification via Mixture of Experts and Graph-Based Relation.

Sensors (Basel, Switzerland)·2026
Same journal

Development of an Instrumented Glove for Palmar Pressure Assessment in Kayakers.

Sensors (Basel, Switzerland)·2026
Same journal

Development and Experimental Validation of an Autonomous IoT-Based Monitoring System for Real-Time Water Quality Assessment in the Amazon River.

Sensors (Basel, Switzerland)·2026
Same journal

Semi-Supervised Adversarial Learning Framework for Controller Area Network Bus Intrusion Detection.

Sensors (Basel, Switzerland)·2026
Same journal

Smart Optimization Method for Safety Signs in Innovative Manufacturing Environments Integrating Industrial Field IoT Sensors and Knowledge Graphs.

Sensors (Basel, Switzerland)·2026
See all related articles

Related Experiment Video

Updated: Oct 2, 2025

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors
06:17

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors

Published on: January 16, 2020

5.9K

On-Line Foreign Object Detection Using Double DD Coils in an Inductive Wireless Power Transfer System.

Nataša Prosen1, Miro Milanovič1, Jure Domajnko1

  • 1Faculty of Electrical Engineering and Computer Science, University of Maribor, 2000 Maribor, Slovenia.

Sensors (Basel, Switzerland)
|February 26, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces an online method for foreign object detection in wireless power transfer systems. It uses mutual inductance measurements in double DD coil systems to accurately detect foreign objects.

Keywords:
FODWPTcoupling coefficient measurementdouble DD coil structuremutual inductance measurementon-line measurement

More Related Videos

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.7K
Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
10:52

Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing

Published on: March 8, 2020

6.0K

Related Experiment Videos

Last Updated: Oct 2, 2025

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors
06:17

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors

Published on: January 16, 2020

5.9K
Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.7K
Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
10:52

Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing

Published on: March 8, 2020

6.0K

Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Wireless Power Transfer

Background:

  • Wireless power transfer (WPT) systems are susceptible to foreign object detection (FOD) issues.
  • Existing FOD methods may lack real-time capabilities or accuracy.

Purpose of the Study:

  • To propose an on-line method for foreign object detection (FOD) in double DD coil systems.
  • To enable accurate FOD by real-time measurement of mutual inductance between transfer pads.

Main Methods:

  • Utilizing a double DD coil structure where one coil handles power transfer and the other measures mutual inductance.
  • Measuring mutual inductance via voltage across an open-circuit receiver coil.
  • Employing phase-shifted voltages in DD coils for enhanced localization and detection.

Main Results:

  • The proposed method allows for real-time foreign object detection during WPT initialization or operation.
  • Mutual inductance measurements effectively differentiate between changes caused by object proximity and foreign objects.
  • The system can distinguish between inductance changes due to distance variations and foreign object presence.

Conclusions:

  • The developed on-line FOD method enhances the safety and reliability of wireless power transfer systems.
  • Real-time mutual inductance monitoring provides a robust approach for detecting foreign objects.
  • The use of double DD coils and phase-shifted voltages improves FOD performance.