DC EQUIPMENT CONSTRUCTION
DC Generators
Stator
The stator is the part of a motor or generator that is stationary (refer to Figure 2). In DC
machines, the purpose of the stator is to provide the magnetic field. The stator in Figure 2 is
provided by a permanent magnet.
Field
The purpose of the field in a DC machine is to provide a magnetic field for producing either a
voltage (generator) or a torque (motor) (refer to Figure 2). The field in a DC machine is
produced by either a permanent magnet or an electromagnet. Normally, electromagnets are used
because they have an increased magnetic strength, and the magnetic strength is more easily varied
using external devices. In Figure 2, the field is provided by the stator.
Summary
The construction of DC equipment is summarized below.
DC Equipment Construction Summary
The purpose of the armature is to provide the energy conversion in a DC
machine.
The purpose of the rotor is to provide the rotating element in a DC machine.
In DC machines, the purpose of the stator is to provide the field.
The purpose of the field in a DC machine is to provide a magnetic field for
producing either a voltage or a torque.
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