Showing posts with label Drives. Show all posts
Showing posts with label Drives. Show all posts
Basic Motion Control - A Glossary of Terms Used With Variable Frequency Drives and Electric Motors
Electronic VFDs are speed control devices which vary the voltage and frequency to an induction motor using a technique called Pulse Width Modulation (PWM). Since they are inexpensive and reliable, VFD's have become the preferred way to achieve variable speed operation. The following is a glossary of commonly used terms when describing or specifying Variable Frequency Drives for electric motors.
Alternating Current (AC): A periodic flow of electricity which changes direction each cycle, reaching a maximum in one direction, decreasing to null, then reversing to reach a maximum in the opposite direction.
Basic Motion Control - A Glossary of Terms Used With Variable Frequency Drives and Electric Motors
Air Gap: The space between the rotating and stationary parts of an electric motor. Magnetic energy is transferred across this gap.
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