ESTIMATION OF ELECTROHYDRAULIC COMPLEX ENERGY EFFICIENCY DURING THE DEVEL-OPMENT PIPELINE NETWORK CAVITATION PROCESSES

It has been shown the cavitation processes influence in the pipeline for electrohydraulic complex energy modes. It has been found that the cavitation self-oscillations development in the system leads to an increase in hydraulic power loss to the fluid friction, increasing the power variable component, reduce energy efficiency throughout the electrical system. It has been proposed a method for power conversion analyzing processes of the electrohydraulic complex power channel based on the power representation as a sum of harmonic components resulting from the product of voltages and currents, pressures and flow rate orthogonal signal components. The possibility of energy efficiency estimation electrohydraulic system by determining the power channel capacity coefficient and coefficient power controllability, which are based on mean square estimation signal electric and hydraulic power has been shown. The energy conversion processes analysis based on a electrohydraulic physical model with the nonlinear processes development in the pipeline network has been executed. The curves of energy efficiency indexes the changes of electrohydraulic complex on the development of nonlinear processes degree in the hydraulic system has been obtained.