METHOD FOR CONTROLLING TWO-WAY PULSE-WIDTH MODULATED CONVERTER Russian patent published in 2004 - IPC

FIELD: automatic control; adjustable bridge converters. SUBSTANCE: proposed method is designed for adjustable two-way pulse- width modulated bridge converters incorporating L-C filter in continuous-wave part and depends on the fact that in two-way pulse-width modulation control mechanism is independent of output signal polarity. Under steady state operating conditions differential output signal of converter twice crosses zero within synchronization cycle in equal time intervals. In shaping control signals from sum of error signal , differential output signal, and sweep signal equal to differential output signal increment predicted up to end of respective synchronization half-cycle key elements are switched over at error signal equal to zero. EFFECT: enhanced conversion stability, improved waveform of output parameter (current, voltage). 2 cl, 1 dwg