STAND-ALONE AC POWER PLANT Russian patent published in 2018 - IPC H02J3/34 

FIELD: electric power engineering.

SUBSTANCE: invention relates to the electric power industry, namely to autonomous AC power plants based on internal combustion engines and a synchronous generator, and is designed to generate electric power of a stable frequency and a stable voltage at a variable rotation frequency of the internal combustion engine shaft. Problem being solved is to create a highly efficient stand-alone AC power plant equipped with an intelligent control system. In a stand-alone AC power plant containing in series connected variable-speed internal combustion engines with an optimum engine shaft speed generation unit consisting of a fuel consumption sensor, an internal combustion engine shaft speed sensor, an internal combustion engine shaft speed controller, a signal summator and a unit for setting the economical rotational speed of the internal combustion engine shaft in the form of a training controller, a control controller and an associative memory unit, a synchronous generator, a controlled rectifier with a voltage stabilization unit connected to it, a capacitor battery, a current sensor to which the load power calculation unit is connected, the output of which is connected to the unit for setting the economical rotational speed of the internal combustion engine shaft, a voltage inverter with an output voltage frequency setter connected to it, a step-up transformer, sensors for pressure, temperature and humidity of the ambient air are connected to the training controller.

EFFECT: technical result of the proposed invention is an automatic determination that does not require knowledge of the characteristics of the internal combustion engines, optimal, from the point of view of fuel consumption, rotational speed of the internal combustion engine shaft, which is part of the generator set taking into account the pressure, temperature and humidity of the ambient air.

1 cl, 1 dwg