How VFDs drive CNC spindle motors: the constant-torque to constant-power transition, overload margins for interrupted cuts, and cabling and brand choices for...

How to size VFDs for crane and hoist duty: four-quadrant loading, vector control, dynamic and regenerative braking, heavy-duty overload, and STO/brake coordi...

How to select and size a VFD for screw, reciprocating and centrifugal compressors, covering overload rating, turndown limits and energy savings.

How to size and set up a VFD for conveyor loads, covering HD overload duty, breakaway torque, control method, braking and cable length.

How VFDs cut HVAC fan energy costs via the fan affinity laws, right-size to Normal Duty, and choose ABB, Siemens, or Schneider drives.

How a VFD saves energy on centrifugal pumps via the affinity laws, plus duty rating, PID/multi-pump control, dry-run protection, and sizing.

A ranked comparison of ABB, Schneider Electric, and Siemens VFD brands by control method, overload rating, fieldbus support, and total cost of ownership, plu...

ABB ACS580 general-purpose and ACS880 industrial VFDs share Direct Torque Control, but differ in overload class, regen capability and multidrive expansion.

A technical review of the Siemens SINAMICS V20 entry drive: power range, V/f-only control, communication, and where it wins or loses against G120C.

A technical comparison of the modular Siemens SINAMICS G120 and the fixed-housing G120C, covering control methods, safety options, fieldbus support and where...