METHOD OF INDEPENDENT AGREED inverter with resonant switching

摘要

FIELD: electric engineering.;SUBSTANCE: invention relates to electric engineering and may be used for induction heaters and other electric technology loads. The control method for stand-alone harmonised inverter with resonance switching of controlled gates, provides for the source of direct supplying voltage E at the input, parallel oscillatory circuit with high Q-factory in the interval [1, 30], additional throttle with induction kL, where k is a numerical coefficient taking values within the interval [1/2, 5], and L is an equivalent induction of the load, that generate and alternately supply control pulses to control gates generated direct and inverted semi-waves of alternating voltage under the load, and define moments of instantaneous value of alternating voltage under the load transfer through the zero value. The next control pulses are controlled and supplied, and the next controlled gates are connected in advance of and with regard to the moments of instantaneous alternating voltage under the load values transfer through the zero value to the interval angle [π/12, π/3]. Then, voltage and instantaneous value of a.c. load current i are measured. The moments of instantaneous alternating voltage under the load value transfer through the zero are defined by solving equations equivalent to the given: E-kL di/dt=0.;EFFECT: extended area of stand-alone harmonica inverter with resonance switching application.;2 dwg