The AC power is disconnected and the DC power is "injected" into the windings ... They are used for fast and high resolution motion control, and special programming equipment is used to program the ...

Afterwards, you will have lessons on AC motor control components and systems, both manual and automatic. This will culminate in training for you on AC variable speed drives. In module 3 you will learn ...

Engineers achieve this speed control requirement by using what is called the variable frequency drive (VFD ... Next, an inverter circuit converts this DC back to AC, allowing engineers to make any ...