3000Chapter15 - Chapter 15 DC Machines 1 Objectives State...

Info iconThis preview shows pages 1–17. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Chapter 15 DC Machines
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Objectives State Faraday’s Law and Lenz’s Law Calculate the voltage generated by passing a wire through a magnetic field. Sketch a simple generator and describe how it operates. Describe a commutator and brush assembly and state how it works.
Background image of page 2
3 Objectives Find the force produced on a current-carrying wire in a magnetic field. State the differences between a shunt and compound dc generator and describe the performance characteristics of each. Sketch a simple dc motor and describe how it operates. State the differences among a shunt, series, and compound dc motor, and describe the performance characteristics and application examples of each.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 15-1 Introduction
Background image of page 4
5 15-2 Magnetic Induction and the DC Generator Faraday’s Law e = N dΦ / dt e = the induced voltage in volts (V) N = the number of series-connected turns of wire in turns (t) dΦ/dt = rate of change in flux in Webers/second (Wb/ s) e = B L v B = the flux density in teslas (T) L = the length of the conductor that is in the magnetic field in meters (m) v = the relative velocity between the wire and the flux, in meters/second (m/s)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 Magnetic induction in a wire moving in a field.
Background image of page 6
7 Right-hand rule for magnetic induction.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8 Wire loop rotating in a magnetic field.
Background image of page 8
9 AC generator with slip rings and brushes.
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10 DC generator with commutator and brushes.
Background image of page 10
11 DC generator output waveform.
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
12 DC generator with field control.
Background image of page 12
13 DC generator four-pole field.
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
14 DC generator rotor with two coils.
Background image of page 14
15 Coil and output waveforms for a two- winding rotor.
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
16 Rotor with several rotor coils and commutator segments.
Background image of page 16
Image of page 17
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/15/2010 for the course COMPUTER E 3000 taught by Professor Muhamadirfan during the Spring '10 term at Sir Syed University of Engineering &Technology.

Page1 / 36

3000Chapter15 - Chapter 15 DC Machines 1 Objectives State...

This preview shows document pages 1 - 17. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online