Understanding Generators: How to Predict Performance Before Building

Click For Summary
SUMMARY

This discussion focuses on predicting generator performance by analyzing the relationship between magnetic flux, rotation speed, and voltage. The key formula presented is V = -ABωsin(ωt), where V represents voltage, A is the cross-sectional area, B is the magnetic field strength, and ω is the angular frequency of the motor. Understanding these variables allows for a theoretical prediction of generator output before physical construction. The conversation highlights the importance of electric physics fundamentals in assessing generator functionality.

PREREQUISITES
  • Understanding of magnetic flux and its components
  • Knowledge of angular frequency in rotational systems
  • Familiarity with basic electric physics concepts
  • Ability to apply mathematical formulas in physics
NEXT STEPS
  • Study the principles of electromagnetic induction
  • Learn about the characteristics of permanent magnets and their applications
  • Explore the mathematical derivation of voltage in rotating systems
  • Investigate simulation tools for generator performance prediction
USEFUL FOR

Students and professionals in electrical engineering, physics enthusiasts, and anyone interested in designing or analyzing generator systems.

Rusty69
Messages
3
Reaction score
0
I was thinking if the strenght of the permanet magnet could be parallel to I , the rate at which the the magnet (or wire) rotates parallel to V & of course the wire resistance would go with R . If there is some type of way to determine the outcome of a generator before building it, starting it up etc could someone please tell me ? Also am aware the generator would most likely need to be turned on to determine the rate of it's rotation.
 
Physics news on Phys.org


Are you asking what the voltage would be based on how fast your rotating your motor in a magnetic field . Voltage is the time derivative of magnetic flux, and the flux would be
ABcos(wt) where A is the cross sectional area of your loop rotating in the B field and
w is the angular frequency of the motor.
so V=-ABwsin(wt)
If that's what your getting at .
 


Well yes that is what am asking, but am also new to electric physics stuff. Based on that as of now I don't really get what you mean but thank's for posting .
 

Similar threads

High School Magnetic field and generator power output
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad The vector math of relative motion of wire-loop & bar magnet
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad How Does a Magnetic Repulsion Machine Work?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Two ways of constructing electromagnetism, which is correct?
  • · Replies 7 ·
Replies
7
Views
1K
Undergrad Magnetic field as result of length contraction
  • · Replies 20 ·
Replies
20
Views
5K
Graduate Need help with a thought experiment about a Faraday generator
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad How Do Eddy Current Dampers Work in Space Applications?
  • · Replies 4 ·
Replies
4
Views
3K
Copper Losses in an Electric Generator
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Understanding the Coaxial Inductor: A Study of its Electric and Magnetic Fields
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Calculating actual power (wattage) created by a simple generator
  • · Replies 7 ·
Replies
7
Views
8K