User`s guide

EE Pro for TI-89, 92 Plus
Equations - Motors and Generators
124
Chapter 31 Motors and Generators
This section has thirteen topics covering various aspects of motors and generators. The topics are organized under
these headings.
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Note: The equations in this section are grouped under topics which describe general properties of semiconductors or
devices. Equations for a variety of specific cases and are listed together under a sub-topic heading and are not
necessarily a set of consistent equations which can be solved together. Choosing equations in a subtopic w/o regard
as to whether the equations represent actual relationships could generate erroneous results or no solution at all. Read
the description of each equation set to determine which equations in a sub-topic form a consistent subset before
attempting to compute a solution.
Energy Conversion
DC Generator
Separately-Excited DC Generator
DC Shunt Generator
DC Series Generator
Separately-Excited DC Motor
DC Shunt Motor
DC Series Motor
Permanent Magnet Motor
Induction Motor I
Induction Motor II
Single-Phase Induction Motor
Synchronous Machines
Variables
All the variables used in this section are listed with a brief description and units.
Variable Description Unit
A Area m
2
ap # parallel paths unitless
B Magnetic induction T
Ea Average emf induced in armature V
Ef Field voltage V
Ema Phase voltage V
Es Induced voltage V
Eta Average emf induced per turn V
F Magnetic pressure Pa
H Magnetic field intensity A/m
Ia Armature current A
IIf Field current A
IL Load current A
Ir Rotor current per phase A