| 摘要 |
FIELD: electricity. ^ SUBSTANCE: low-frequency and extremely low-frequency generator contains rectifiers with series capacitors connected in DC outputs and integrated to battery. Negative pole of battery is connected to negative pole of inverter. Positive pole of each capacitor is connected to anode of corresponding completely controlled revertive blocking isolator. Cathodes of completely controlled isolators are attached to positive pole of the inverter. Outputs of control system are connected to control electrodes of all inverter thyristors and all completely controlled isolators. Rectifier design in the form of two or more transducing bridges improves reliability and survivability of low-frequency and extremely low-frequency generator. Enable pulse is supplied to the first completely controlled isolator, then serially to the second isolator and so on, up to n-th isolator. Disable pulses is supplied backwards. Thyristors enable signal of one inverter diagonals is supplied simultaneously with disable pulse supply to the first completely controlled isolator. While isolator disable pulse is supplied in delay time Deltat after this disable pulse is supplied. Thyristors enable signal of the other inverter diagonal is supplied simultaneously with following disable pulse supply to he first completely controlled isolator, and delay time is defined as Deltat=T-ϕ/2pi, where T is generator frequency output, measured in seconds, ϕ is shear angle between voltage and current vector in generator RL-loading, measured in radians. ^ EFFECT: higher reliability and loss enhancement. ^ 2 cl, 2 dwg |
