Lesson 1/Learning Event 1
FIGURE 3. SHUNT-WOUND GENERATOR.
The actual generator you will be working with uses several loops instead of one. Also, each loop
consists of several turns of wire. The loops are wound around an iron core and are attached to the
segments that make up the commutator. The commutator, iron core, and windings are mounted
on a shaft. The assembly is called an armature.
Instead of permanent magnets, this generator has electromagnets. These are made up of a coil of
wire (field coil) wrapped around an iron core or pole shoe. The pole shoes are secured to the
inside of the generator housing or field frame by screws. One end of the field coils is grounded to
the housing; the other comes out through the housing as the field terminal.