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

Three-Phase Short Circuit—Unloaded Synchronous Machine01:21

Three-Phase Short Circuit—Unloaded Synchronous Machine

149
Conducting a three-phase short circuit test on an unloaded synchronous machine helps understand its impact on the system. The AC fault current's oscillogram, with the DC offset removed, reveals that the waveform amplitude decreases from an initially high value to a steady-state level for one phase of the machine.
This behavior occurs due to the magnetic flux produced by the short-circuit armature currents. Initially, these currents follow high-reluctance paths but eventually shift to...
149
Power System Three-Phase Short Circuits01:21

Power System Three-Phase Short Circuits

93
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
93
Series R—L Circuit Transients01:22

Series R—L Circuit Transients

104
In a series resistor-inductor (R-L) circuit, closing the switch at the start of the time period simulates a three-phase short circuit, a fault condition where all three phases of an unloaded synchronous machine are short-circuited. When there is no fault impedance and no initial current, the initial voltage is determined by the phase angle of the source voltage.
Using Kirchhoff's Voltage Law (KVL) to analyze this circuit helps determine the total asymmetrical fault current, which consists...
104
Back EMF01:24

Back EMF

3.0K
Generators convert mechanical energy into electrical energy, whereas motors convert electrical energy into mechanical energy. A motor works by sending a current through a loop of wire located in a magnetic field. As a result, the magnetic field exerts a torque on the loop. This rotates a shaft, extracting mechanical work from the electrical current sent in initially. When the coil of a motor is turned, magnetic flux changes through the coil, and an emf (consistent with Faraday's law) is...
3.0K
Energy Stored in Inductors01:16

Energy Stored in Inductors

401
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...
401
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

4.1K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
4.1K

You might also read

Related Articles

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

Sort by
Same author

The Fabrication of Protein Carriers for Intracellular Delivery of Antibiotics Against Intracellular Bacterial Infection.

Molecules (Basel, Switzerland)·2026
Same author

Producing Advanced Biofuel Butanol Through Acetone-Butanol-Ethanol Fermentation.

Advances in biochemical engineering/biotechnology·2026
Same author

Context-dependent STAT3 signaling in liver fibrosis.

Hepatology (Baltimore, Md.)·2026
Same author

Bioorthogonally Cross-Linked Injectable PEG Hydrogel with Robust Hemostatic and Antibacterial Properties.

Gels (Basel, Switzerland)·2026
Same author

A bird's-eye view for future ionic thermoelectrics: from ions to products.

National science review·2026
Same author

Low-power biomimetic ionic thermoelectric device for multi-gas olfaction.

National science review·2026

Related Experiment Video

Updated: Jul 12, 2025

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

1.7K

Induction Motor Stator Winding Inter-Tern Short Circuit Fault Detection Based on Start-Up Current Envelope Energy.

Liting Chen1,2, Jianhao Shen1,2, Gang Xu1,2

  • 1College of Urban Transportation and Logistics, Shenzhen Technology University, Shenzhen 518118, China.

Sensors (Basel, Switzerland)
|October 28, 2023
PubMed
Summary

This study introduces a new method for early detection of inter-turn short circuit faults in induction motors using start-up current envelope energy. The approach achieves high accuracy, improving motor maintenance and reliability.

Keywords:
envelopefault detectioninduction motorinter-tern short circuitsupport vector machine

More Related Videos

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

5.9K
High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
05:11

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

23

Related Experiment Videos

Last Updated: Jul 12, 2025

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

1.7K
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

5.9K
High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
05:11

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

23

Area of Science:

  • Electrical Engineering
  • Mechanical Engineering
  • Condition Monitoring

Background:

  • Inter-turn short circuit (ITSC) is a prevalent fault in induction motors.
  • Early detection of ITSC faults remains a significant challenge in motor diagnostics.

Purpose of the Study:

  • To propose an effective method for early-stage ITSC fault detection in three-phase induction motors.
  • To enhance the reliability and maintenance of induction motors through accurate fault identification.

Main Methods:

  • Utilizing start-up current envelope energy as a fault feature.
  • Applying Akima interpolation and Gaussian window weighting for signal processing.
  • Employing Support Vector Machine (SVM) for fault classification.

Main Results:

  • The proposed method achieved an average accuracy of 96.9% in detecting ITSC faults.
  • SVM demonstrated a high average accuracy of 98.8% for early ITSC detection under no-load conditions.
  • The method effectively determines the severity of ITSC faults in asynchronous motors.

Conclusions:

  • The start-up current envelope energy method offers a novel and accurate approach for ITSC fault detection.
  • This technique provides a significant advancement for induction motor fault diagnosis and predictive maintenance.
  • The study highlights the superiority of SVM over other classifiers for early ITSC fault detection.