SEMI-BRIDGE THYRISTOR INVERTER Russian patent published in 2008 - IPC H02M7/53846 

FIELD: electric engineering.

SUBSTANCE: in accordance to the invention, a transformer is coupled into alternating current diagonal of semi-bridge thyristor inverter. Secondary winding of transformer through diode bridge is connected to constant current load. In parallel to main semi-bridge thyristor inverter, an additional semi-bridge thyristor inverter is included into constant current diagonal which has capacitors with approximately ten times less capacity compared to the main one. An additional transformer winding is incorporated into alternating current diagonal of additional inverter with number of coils less than that of its primary winding. The inverter is controlled from typical pulse-width regulation circuit in broad range of loads.

EFFECT: prevention of additional power losses in commutation block, ensured constancy of power amplitude on load during regulation and simplification.

3 dwg