This section will discuss the different types of bdc

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: discuss the different types of BDC motors and the advantages/ disadvantages of each. Permanent Magnet Permanent Magnet Brushed DC (PMDC) motors are the most common BDC motors found in the world. These motors use permanent magnets to produce the stator field. PMDC motors are generally used in applications involving fractional horsepower because it is more cost effective to use permanent magnets than wound stators. The drawback of PMDC motors is that the magnets lose their magnetic properties over time. Some PMDC motors have windings built into them to prevent this from happening. The performance curve (voltage vs. speed), is very linear for PMDC motors. Current draw also varies linearly with torque. These motors respond to changes in voltage very quickly because the stator field is always constant. FIGURE 3: SHUNT-WOUND DC MOTORS Brush DC Voltage Supply Shunt Field Armature Series-Wound Series-wound Brushed DC (SWDC) motors have the field coil in series with the armature. These motors are ideally...
View Full Document

This note was uploaded on 01/29/2014 for the course AA AA taught by Professor Aa during the Winter '10 term at ENS Cachan.

Ask a homework question - tutors are online