Speed Control Basics: VFD or Triac for AC Induction Motors?

When a voltage is applied to an AC induction motor, it runs at a certain speed.  Variable speed requirements for AC induction motors are typically fulfilled by a 3-phase motor and an inverter or VFD.  This blog post also introduces another option.

SINGLE PHASE AC MOTOR SPEED CONTROL USING ARDUINO AND LAMP / BULB DIMMER USING ARDUINO WITH MOSFET

Engineering Notes

Variable Frequency AC Drive Training

AC Motor Speed Control, Variable-speed Motor Controls and Drives

AC Motor speed control using ZCD-IC555-DIAC-TRIAC

PDF) Phase Angle Control Method of Speed Control of Single Phase Induction Motor

Single Phase Variable Frequency Drive VFD Circuit

How does a triac control AC motor speed? - Quora

Speed Control of Induction Motor - AC Motor Speed Control Methods

3 Phase Induction Motor Speed Controller Circuit

How to control the speed of an AC motor - Quora

Easy circuit! How to make AC Motor Speed Controller (Part 1)