Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Harmonics effect on Induction Motor
Share
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Power Systems > Harmonics effect on Induction Motor

Harmonics effect on Induction Motor

Last updated: September 20, 2016 2:10 pm
Editorial Staff
Power Systems
No Comments
Share
2 Min Read
SHARE

Harmonics in the power system are generated due to the usage of non linear load. Some of the effects  of harmonics on the performance of  induction machine are:

  • Core losses in the Induction machine increases
  • Torque of the Induction motor reduces
  • Increase in the Skin effect
  • Damage of the induction motor insulation
  • Electromagnetic Interference
  • Deviation in the induction motor Torque-Speed curves

Increase in Core Loss:

Core loss in any machine machine constitutes both hysteresis loss and eddy current loss. Hysteresis loss of the induction machine is proportional to the applied frequency and eddy current loss is proportional to the frequency squared. Frequency of the harmonics will be in the  order of the multiples of the fundamental frequency. Therefore core loss is major concern at higher frequencies due to harmonics. Also harmonic currents and voltages reduces the overall efficiency of the machine

Increase in Skin effect:

Increase in the harmonics frequency results in increase in skin effect tending the current to flow on the surface of the conductor. Skin effect contributes the loss in the form of resistance to the flow of current

Electromagnetic Interference:

Harmonics increase the Electromagnetic Interference(EMI). This EMI does not affect the motor, however it affects the operation of nearby electronics, control and communication circuits

Reduced Motor Torque:

Fundamental frequency of the induction motor produces forward operating torque. However it is observed that harmonics frequency will generate torque in both forward and in reverse direction. For example 5th 7th and 11th harmonics produce torques in reverse direction and on the other hand 7th, 13th and 19th harmonics components produces torque in forward direction.5th harmonic components will have higher magnitude compared to 7th harmonics. Hence harmonics torque will reduce the operating torque of the machine

Deviation from Torque-Speed Characteristics:

Losses which occur due to Harmonics will cause the deviation in the torque speed characteristics of the motor from original and affects the performance of the motor

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Current Limiting Reactors and Short Circuit Currents
Harmonics effect on Transformer
Factors affect Voltage Level Selection in Service System
Auto Recloser Circuit Breaker in Power System
Shunt Vs Series Capacitors Advantages
Voltage Variations Effects on Power Plant Equipment
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
210kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

Neutral Grounding Practice in Power System
Electrical Power System Protection Quiz
Advantages and Disadvantages of Per Unit System
Ungrounded or Isolated Neutral System Disadvantages
Underground Cable Fault Identification Methods
Shunt Capacitor Advantages in Power System
Corona Ring on Surge Arresters and other EHV equipment
Why Reactive Power is Generated at Load

Keep Learning

why-symmetrical-components-used

Why Symmetrical Components Used for Unbalanced faults in Power System

Power System Protection Multiple Choice Questions

Power System Protection Multiple Choice Questions

Advantages & Disadvantages of AC power and DC power

Advantages & Disadvantages of AC power and DC power

Silicon Carbide Lightning Arresters Working Principle

Why Grounding

Generating Station Grounding Principles

Reactive Power Sources and Sinks in Power System

Reactive Power Sources and Sinks in Power System

harmonics-disadvantages-in-power-system

Harmonics Disadvantages in Power System

Rotor Angle Stability of Synchronous Generators in Power System

Rotor Angle Stability of Synchronous Generators in Power System

Learn More

Electrical Machines Objective Questions

Electrical Machines MCQ Series 7

Four Wire Current Loop

4-wire Transmitters Current Loops

Bently Nevada Proximity Probe

Root Cause Analysis for Vibration Probe Not Responding

Digital Electronics MCQ

Karnaugh Map Objective Questions

Fired Boiler Induced Draft Fan (IDF) Failures

Fired Boiler Induced Draft Fan (IDF) Failures Upset all Plants Operations

What is a Servo Valve?

What is a Servo Valve? – Principle and Advantages

Diode-testing-with-multimeter

How to Test a Diode using Multimeter

How to Link SQL With Indusoft Web Studio

How to Use an SQL Server with Indusoft Web Studio?

Menu

  • About
  • Privacy Policy
  • Copyright

Quick Links

  • Learn PLC
  • Helping Hand
  • Part Time Job

YouTube Subscribe

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?