Marine & Offshore Offers Free Color Brochure On ABB Variable AC Drives

Marine & Offshore of Helsinki, Finland, is offering a free 12-page color brochure on ABB variable speed AC drives for marine propulsion and dynamically positioned vessels.

The brochure discusses the SAMI Megastar variable speed AC thruster drives with fixed-pitch propellers which are said to give superior performance, shortest pay-back time, and documented fuel savings exceeding 40 percent in DP operation.

According to ABB, the Sami Megastar frequency converter meets all the set requirements, and uses conventional AC cage induction motors to drive the thrusters. In practice, it has also turned out to be a solution superior to two-speed AC motors and variable-speed DC drives.

The SAMI Megastar drives are controlled by a Selma Marine thruster assignment system. This allows the ship to be controlled either manually using the thruster control levers, by autopilot, or—in the Automatic DP mode—by a Kongsberg Dynamic Positioning System (NMD class III). In addition, each frequency converter has its own control panel. The thrust control system is completely digital without hydraulic or mechanical components.

The publication is well illustrated with color photos, drawings, etc. For free copies, Circle 52 on Reader Service Card

Maritime Reporter Magazine, page 18,  Jun 1989

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.