Product analysis
This presentation is the property of its rightful owner.
Sponsored Links
1 / 14

Product Analysis PowerPoint PPT Presentation


  • 65 Views
  • Uploaded on
  • Presentation posted in: General

Product Analysis. Lab 3. Product Analysis Objectives. Combine previous lab experiences to better understand the workings of a completed product. Develop an appreciation for horsepower and wattage considerations in product design.

Download Presentation

Product Analysis

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Product analysis

Product Analysis

Lab 3

Winter Quarter


Product analysis objectives

Product Analysis Objectives

  • Combine previous lab experiences to better understand the workings of a completed product.

  • Develop an appreciation for horsepower and wattage considerations in product design.

  • Expand the library of electrical schematic symbols used to designate components.

  • Develop reverse engineering skills.

Winter Quarter


Product analysis1

Product Analysis

Contents:

  • Power Conversion and Approximation

  • Schematic Components

  • Motor Discussion

Winter Quarter


Power conversion

Power Conversion

watt [for James Watt], abbr. W, unit of power, or work done per unit time, equal to 1 joule per second. It is used as a measure of electrical and mechanical power. One watt is the amount of power that is delivered to a component of an electric circuit when a current of 1 ampere flows through the component and a voltage of 1 volt exists across it.

Winter Quarter


Power conversion1

Power Conversion

horsepower, unit of power in the English system of

units. It is equal to 33,000 foot-pounds per

minute or 550 foot-pounds per second or approximately 746 watts. The term horsepower

originated with James Watt, who determined by

experiment that a horse could do 33,000 foot-pounds of work a minute in drawing coal from

a coal pit.

Winter Quarter


Schematic symbols

Commonly Used Symbols:

DC Source

AC Source

Motor

Ground

Resistor

Capacitor

Fuse

SPST Switch

N.C. Push Button Switch

N.O. Push Button Switch

Female Connector

Male Connector

Schematic Symbols

Winter Quarter


Breakaway view

Breakaway View

Stator Winding

Rotor

Laminated Core

Poles “Shaded”

with Copper Wire

Winter Quarter


Shading theory

Stator Winding

Shading Coils

Rotor

Shading Theory

Winter Quarter


Shading theory1

Shading Theory

Winter Quarter


Shading theory2

Shading Theory

Winter Quarter


Shading segments

Shading Segments

Winter Quarter


Flux wave rotation

Flux Wave Rotation

Winter Quarter


Motor speed

  • f

  • N

s

rpm =

p

120 x 50

2

rpm = = 3000

Motor Speed

  • Motor theory tells us that the speed of an ac motor is directly proportional to the frequency and inversely proportional to the number of poles as follows:

  • Thus, for a 2-pole motor running at 50 hz:

Winter Quarter


Motor slip

Motor Slip

  • The rotor of an induction motor will not rotate at the theoretical speed due to slip. The equation for slip is:

  • Thus, if the anticipated rpm was 3600 and the actual rpm was 3440:

Winter Quarter


  • Login