One of the winners of the UMNIK program was a fourth-year student of the Faculty of Aircraft Engines, Energy and Transport Diana Koroleva (gr. EMG-406). She devoted her project to solving a design problem in the field of alternative energy, namely for solar power plants. She proposed a new scheme for the hydraulic system of a high-power solar tracker with two-axis control.

The efficiency of solar power plants (SPP) of any type directly depends on the orientation of the surfaces of panels or reflective mirrors to the sun. Special designs – solar trackers – help to ensure their optimal position relative to the star. The more degrees of freedom the rotary device has and the higher the level of its automation, the more productive the SES will be.

Since this system operates in various climatic conditions, a number of problems arise: panel contamination, frequent breakdowns due to the inability to compensate for the influence of external forces, which is most common in an electric drive and, finally, the main problem is the accuracy, stability and controllability of the automatic control system. .

Diana Koroleva says:

“I proposed new technical solutions using electro-hydraulic remote control. My scheme contains an autonomous pumping station, including the necessary attributes, including a hydro pneumatic accumulator, and two hydraulic cylinders with a one-sided rod, which perform horizontal and vertical adjustment of the platform on which the panel is installed. Multi-position four-line hydraulic distributors control the hydraulic cylinders with a throttle control method. In addition, the system is equipped with a block of check-safety valves that can compensate for external climatic influences.

In addition, the control system during the pause period is additionally adjusted due to the feedback system, compensating for constantly changing external influences.”

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