Induction Motor Speed Control by varying duty cycle of TRIAC

Abstract

In this paper, Induction motor speed has been controlled by using duty cycle of TRIAC with
less cost. The characteristic of the 1Φ and 3Φ induction motor is same. Here, we are
using1Φ induction motor though it is not self-started because the 1Φ supply is easily
available. Here in this paper, by varying the duty cycle of the TRIAC, I.M Is being controlled.
The torque of Induction motor is proportional to square of the voltage. Voltage is being used
as the controlling parameter. Raspberry Pi is as a microcontroller development board which
is like the replacement of laptop. The induction motor voltage of stator terminals is being
controlled by triac and gate pulses. We can apply reduce voltage to the induction motor
stator terminals by slightly delaying the gate pulses. As torque decrease, simultaneously
speed of the motor gets reduced. The language used is Python. It also uses LINUX.