DC VOLTAGE CONVERTER INTO QUASI-SINUSOIDAL THREE-PHASE VOLTAGE WITH INCREASED POWER Russian patent published in 2021 - IPC H02M7/537 

FIELD: power conversion technology.

SUBSTANCE: invention relates to the field of power conversion technology and can be used in power supply systems and electric drives of industrial plants and vehicles. The effect of the claimed invention is achieved by the fact that a converter containing M number of channels, each in the form of a three-phase voltage inverter (TVI) with its own pair of power buses and controlled by the PWM algorithm, and three M rod transformers (hereinafter transfilter) with a winding on each rod (TF-M), moreover, one ends of these magnetically connected M magnetic core windings of each of the three TF-M are connected to the output terminals of the same name M TVI, as well as a control unit that provides a phase shift of the M TVI output voltages at the carrier (hereinafter, the clock) PWM frequency by an angle of 2π/M, equipped with M number of capacitors, each of which is connected between a pair of power buses of one of the M TVIs. M pairs of M TVI buses are connected in series with each other, and the other ends of the TF-M windings located on different magnetic circuits and belonging to different phases of M TVI, forming M three-phase output terminals made with the ability to connect to them M galvanically isolated three-phase loads (for example, in the form of M number of electric traction motors). In this case, at M=2, the ends of windings of different polarity of one of the three TF-2 are connected to the output terminals of the same name in phase of each of the two TVIs, and at M≥3, the ends of the windings of the same polarity of each of three (m2=3) TF-M. M core magnetic circuits of transfilters are made according to a spatially magnetically symmetric design

EFFECT: increasing the efficiency and expanding the scope of its application at increased values ​​of the supply voltage.

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