TURBOCHARGER CONTROL SYSTEM Russian patent published in 2019 - IPC F02C9/00 

FIELD: control systems.

SUBSTANCE: invention relates to control systems of operation of turbo-compressor unit and can be used to control process of occurrence of critical non-stationary self-oscillations of compressor compressor during tests of mainly aircraft gas turbine engines (GTE) and gas turbine engines (GTE) for stationary stations. Known turbocompressor plant control system, comprising means for measuring air temperature and pressure at the compressor inlet, means of measuring temperature of gases behind low pressure turbine, devices for measuring rotation frequency of low pressure rotor and air pressure behind high pressure compressor, means for measuring fuel consumption and values of installation angles of input and guiding devices of low pressure compressor, a computer device for forming, based on the measured parameters, the value of the operating speed of the low pressure rotor and for generating a control action for controlling the rotor speed of the low pressure by the error value between the mathematically programmed and measured values of the parameters and the means for transmitting the control action to the compressor parameter control device, according to the invention, additionally equipped with means for measuring static pressure at the inlet of the compressor, full pressure, at least in two points in the radial section to the compressor-injector axis, is equipped with an additional computing device for determining air flow corresponding to the rotor operating frequency of the compressor-supercharger, which is installed according to statistically significant relative to mathematically given program values of measured values with due allowance for static pressure, temperature, averaged total pressure at the inlet of compressor-supercharger and total pressure behind the compressor injector and for generation of control actions by value of mismatch between mathematically programmed values of air flow rate and air flow, determined from values of measured values in stability interval compressor-supercharger, and compressor compressor pressure parameters are controlled by swing shutter installed on turbo-compressor unit.

EFFECT: use of invention enables to prevent occurrence of critical non-stationary self-oscillations of rotor speed of low pressure, allows to control compressor unit and its operation in narrow working zone at maximum values of efficiency of its gas-dynamic stability, reduce fuel consumption and eliminate unjustified stops.

1 cl, 2 dwg