METHOD FOR CONTROLLING SELF-CONTAINED ASYNCHRONOUS GENERATOR Russian patent published in 2017 - IPC H02P9/02 H02P9/48 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used for power supply of self-contained objects requiring a stable AC network at variable rotation speed of the generator shaft. In the method for controlling a self-contained asynchronous generator with a valve inverter in the rotor circuit the rotor current frequency is changed proportionally to the sum of rotation frequencies of the rotor and the generator stator field, formed are signals of setting instantaneous values of a sinusoidal three-phase output variable of the inverter shifted relative to each other by the angle of 2π/3, determined is a deviation between the set and the measured signals of the inverter output variable, the deviation is compared with the threshold level, and if it exceeds the deviation shall be decreased down to a value smaller than the threshold level. Between the rectifier and the smoothing reactor a key element is switched on, and antiparallel to the inverter input with the smoothing reactor a diode is switched on to make at the key element switchoff a circuit of current passage flowing due to the power accumulated in the motor windings and the smoothing reactor. Determined is a deviation between the set and the measured maximum values of phase currents instantaneous values differences modules at the inverter output, the deviation is compared with the threshold level, in case of exceeding which a key element in the DC circuit is switched on, and when this deviation does not exceed the threshold level, the key element is switched off in the DC circuit. Method for controlling a self-contained generator allows to improve stabilization of voltage at the generator output at change of the load, to increase the noise immunity.

EFFECT: technical result is improvement of voltage stabilization at the generator output at change of the load, higher noise immunity of the control system.

1 cl, 1 dwg