Variable Frequency Drives: how this controller can transform induction motors forever nanoZorro: Delightful Technology

#008 - AC induction motors can be transformed into a highly controllable machine. With this electronic device, called Variable Frequency Drive (VFD, for short), a motor can have an ideal and directly proportional power-speed ratio while mantaining the torque constant in nominal conditions. In some small models, the input is a monophase connection (two wires) and the output is a three-phase connection (3 wires), which makes them totally convenient for places where three-phase wiring isn't avai...