J
John A. Johansen
Researcher at FMC Technologies
Publications - 13
Citations - 418
John A. Johansen is an academic researcher from FMC Technologies. The author has contributed to research in topics: Subsea & Actuator. The author has an hindex of 7, co-authored 13 publications receiving 418 citations.
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Patent
Power generation system
John A. Johansen,Vidar Sten Halvorsen,Lars Fretland,Andreas Mohr,Christina M. Johansen,Prevault Veronique +5 more
TL;DR: In this article, a system for generating an electrical power output from a subsea installation that includes at least one flowline is described, where the system includes a turbine that is operatively connected to the flowline, the turbine being rotatable by fluid flowing through the flow line, and the turbine generating the electrical power when the turbine is rotated.
Patent
System for controlling a hydraulic actuator, and methods of using same
TL;DR: In this paper, the authors present a system for controlling a hydraulic actuator, and various methods of using same, including an actuator coupled to the first hydraulic cylinder, the actuator device adapted to drive the hydraulic cylinder to create the sufficient pressure in the fluid, and at least one hydraulic line operating at a pressure other than atmospheric pressure.
Patent
Modular actuator for subsea valves and equipment, and methods of using same
TL;DR: In this article, a modular actuator for subsea valves and equipment, and various methods of using same, is presented. But the present actuator is directed to a modular subsea valve and equipment.
Patent
Electric-hydraulic power unit
TL;DR: In this article, the authors present an electric-hydraulic power unit with a movable pressure barrier and a configurable flow path in fluid communication with the first and second chambers, and at least one valve for configuring the flow path.
Patent
Subsea control system
TL;DR: In this article, a control system for a subsea installation based on CAN bus technology is described, where a single cable forms a backbone for transmitting signals and/or power from a central control unit to a number of devices or sensors on the installation.