On November 14th, 2019, the student João Pedro Duarte da Silva presented his master thesis, Experimental and Theoretical Analysis of an Electro-Hydrostatic Actuator for Ultra-Deepwater Applications, in Florianópolis, SC. The research consists of conducting experimental tests, mathematical modeling and simulations for the system analysis in terms of functionality and power consumption.
The approached system is an Electro-Hydrostatic Actuator (EHA) designed for the operation of 2-inch gate valves used to exploit hydrocarbons at depths of up to 3000 meters.
The work was supported by the company Bosch Rexroth, Atibaia – Brazil, and Lohr am Main – Germany, where part of the research development and experiments on a test bench were performed. The results obtained present a system with robust behavior during the nominal opening and closing operations of the gate valve, as well as during the fail-safe functions, in all evaluated scenarios. The EHA proves to have low power consumption, with the possibility of presetting a maximum power consumption, which is controlled by limiting the angular speed of its servomotor.
