Hydraulic Control Technology for Wind Power Flexible Subassemblies The power unit for power generation To move and control the components of a wind turbine, a standard power unit from Rexroth, consisting of standardized subassemblies, is almost always sufficient. The advantages: Low engineering effort Rapid delivery Standardized subassemblies Perfectly adapted components Mature technology with a proven track record Low maintenance, long service life Rexroth is also capable of realizing customized solutions quickly and inexpensively. Rexroth motor-pump subassemblies If manufacturers of wind turbines want a decentralized design, they can choose from a broad spectrum of electric motors and hydraulic pumps, all of which can be freely combined. Rexroth supplies gear, vane and piston pumps with fixed or variable displacement and with mechanical or electrical pump controllers. Hydraulic control pumps from Rexroth offer high, energy-conserving adaptability, material saving, longer service life and longer maintenance intervals. In wind turbines, Rexroth axial piston pumps efficiently regulate pressure and flow. Via the mechanical pressure controller, the system pressure is permanently set at the pump—the pump only displaces as much oil as required. On the load-sensing solution, system pressure is additionally adapted to load pressure. For electrical control, the system control refers to current operating conditions in calculating command values and adapts pump pressure and flow to the situation. Rexroth accumulator subassemblies Hydraulic accumulators not only serve as an energy reserve in emergencies, but also cover peak demand. This means the installed power can be much lower, yielding savings in component sizes and energy consumption. The advantage of this is that the installed power can be much lower, thus yielding savings in component sizes and energy consumption. This makes Rexroth accumulators well-suited for wind turbines, which need special bladder-type accumulators that reduce the frictional wear occurring in rotary systems and withstand extremely low temperatures. Rexroth filter-cooler modules Clean and cool oil is essential if the hydraulic system is to enjoy a long service life. For use in wind turbines, Rexroth supplies modules in different power categories. With long supply lines, this subassembly can be used as a feed pump in order to prevent cavitation damage to the main pump. The system oil can be changed here and the subassembly can be integrated with ease into existing systems. Learn more about Gear Technology and Hydraulics for Wind Turbines developed by Bosch Rexroth for the wind energy industry. Back to Hydraulic Control Technology