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Induction motors are the most widely used motors for
appliances, industrial control, and automation; hence,
they are often called the workhorse of the motion indus-
try. They are robust, reliable, and durable. When power
is supplied to an induction motor at the recommended
specifications, it runs at its rated speed. However,
many applications need variable speed operations. For
example, a washing machine may use different speeds
for each wash cycle. Historically, mechanical gear sys-
tems were used to obtain variable speed. Recently,
electronic power and control systems have matured to
allow these components to be used for motor control in
place of mechanical gears. These electronics not only
control the motor’s speed, but can improve the motor’s
dynamic and steady state characteristics. In addition,
electronics can reduce the system’s average power
consumption and noise generation of the motor.
M AN843
Speed Control of 3-Phase Induction Motor Using
PIC18 Microcontrollers

Author: Padmaraja Yedamale Induction Motor Basics
Microchip Technology Inc.
NAMEPLATE PARAMETERS
A typical nameplate of an induction motor lists the
following parameters:
INTRODUCTION
Rated terminal supply voltage in Volts
Induction motors are the most widely used motors for Rated frequency of the supply in Hz

关键词： 三相异步电机   速度控制   电机驱动