On land-rigs, offshore drilling rigs/drill-ships, oilfield ESPs, FPSOs and other oilfield installations the nature of power quality problems can usually be characterised by the type of variable speed drives (e.g. DC SCR drives and/or VFDs) being utilised.

The section below serves to provide a basic introduction to both DC SCR drives and VFD related problems, common on drilling packages and other oilfield applications.

• DC Drilling Packages.

• Offshore or oilfield installations with VFDs

• Fixed Speed Explosion-proof Motors on Voltages Supplies with Harmonics.

For information on PQGuard local/remote power and power quality monitoring for offshore/oilfield applications click here.