Variable Speed Drives: Introduction to VSDs

Variable speed drives (VSDs) are used throughout the industry to electronically regulate the speed and the torque of motors. With nearly half the energy in the world consumed by rotating machinery, the applications for VSDs are enormous, and their use is spreading rapidly. When applied and installed properly and when operated and maintained correctly, VSDs can substantially reduce the power required for the work being done and can provide the precision control that is now demanded by modern industry throughout the world.