POWER WITH RESONANT LOAD CONVERSION DEVICE AND SUCH DEVICE OPERATION METHOD WITH SEPARATION BY TIME Russian patent published in 2019 - IPC H02M7/42 H02M7/521 H02M7/523 

FIELD: electrical equipment.

SUBSTANCE: invention relates to the field of electrical equipment and can be used in induction heating circuits. Power conversion device with a resonant load can reduce each switching element switching frequency and reduce the main circuit conductors number. Power conversion device with a resonant load is equipped with the single-phase inverter, which direct current input (Vdc) is connected to the direct current voltage source (11), and the output (Vout), from which the rectangular voltage signal is output at the resonant frequency, is connected to the resonant load (12). Power conversion device with the resonant load contains the switch groups circuits 100U, 100V, 100X, 100Y connected to the single-phase inverter input and output corresponding upper and lower arms and configured so that N (N is an integer equal to 2 or more) consecutive groups consisting of 2 switching elements were connected in parallel by means of the main circuit conductors, and controller that switches each switching element (U11–U32, V11–V32, X11–X32, Y11–Y32) of switch groups (100U, 100V, 100X, 100Y) by time division with a factor of 1/(M×N).

EFFECT: reducing the switching elements switching frequency and reducing losses and increasing reliability.

6 cl, 25 dwg