FIELD: pumps.
SUBSTANCE: invention relates to systems for supply and dosing of working medium with electric drive pumps, particularly, to fuel feed and control systems of gas turbine engines. Proportioning pump comprises feed pump for working medium with drive, including electric drive (ED), ED rotation frequency control unit, ED speed sensor, and sensor for current in ED power windings. Pump dispenser comprises also module for determining current consumption of working medium, higher level control system, and module for determining required pump RPM with two inputs and one output. During operation of higher level system, specified value of mass flow of working medium enters one input of said module, and its current value of module for determining current consumption enters other input. Output module is connected to input of ED RPM control unit. Value of mismatch between preset and current values of flow rates is calculated, and new value of required pump ED RPM is formed, which is realised by electric drive control systems. This process continues until values of specified and current costs will coincide with given error.
EFFECT: invention is aimed at providing feed of working medium, and its dosing without using hydro-mechanical devices and flow sensor.
3 cl, 3 dwg
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