| 摘要 |
FIELD: electrical engineering. ^ SUBSTANCE: invention relates to converting hardware and can be used to control single-phase DC and AC voltage converters and to produce adaptive filters. Proposed device represents two serial auto-oscillating stages with pulse width-frequency-amplitude modulation operated with external synchronisation and at circuit voltage frequency. Proposed device comprises also synch device "input", first adder, first integrator, first relay element, amplitude modulator, pd-controller link, second adder, second integrator, second relay element, demodulator and smoothing filter. Proposed device features increased accuracy of operation thanks to synchronisation of the second self-oscillation stage by meander-type square bipolar pulses send from output of the second auto-oscillating stage amplitude modulated by signal proportional to amplitude of circuit voltage that synchronises the first auto-oscillating stage. ^ EFFECT: higher resistance to pulse interferences. ^ 8 dwg |
