OPERATING SYSTEM OF CURRENT DIRECT-CONTROLLED FREQUENCY RECTIFIER Russian patent published in 2018 - IPC H02P27/06 H02P27/10 

FIELD: electricity.

SUBSTANCE: operating system of current direct-controlled frequency rectifier, which represents the m-phase bridge, comprises the m ports, composed of the semiconductor keys and bypass diodes, and m outlets for plugging of the m-phase loading, which is conjoined into the wye; the loading phase current sensing device, the given current driver, the summation unit, each of which has first and second inlets and outlet and actualizes the formula U_out=U_in1-U_in2, where U_in1, U_in2 and U_out - voltages that correspond to the signals on the first and the second inlets and outlet correspondingly. The instantaneous current signal of the corresponding phase is applied to the first inlet of each summation unit, the outlet of the given current driver of the corresponding phase is connected to the each summation unit second inlet. The operating system comprises m hysteresis switches, each of which has one inlet and two outlets; the inlet of each of m-1 hysteresis switch is connected to the outlet of the corresponding summation unit, and the outlets are linked through the matching unit to the corresponding inlets of the semiconductor keys operation. The hysteresis value of each of the hysteresis switches defines the width of the "current corridor" of the corresponding phase current, upon that, the number of the summation unit and the given current driver channels is equal to m-1. The operating system comprises the additional summation unit, which has m-1 inlets and outlet. Each of m-1 inlets of the additional summation unit is connected to the outlet of one of m-1 summation unit, and the outlet - to the inlet of the nth hysteresis switch. The additional summation unit actualizes the formula . Each of the hysteresis switches can have an additional inlet of the width regulation of the hysteresis loops, to which the signal with the regulable level is applied, thus providing for the regulable width of the "current corridor".

EFFECT: quality upgrading of the phase currents generation due to the increase of the dimension of the device operation agreement and the simplification.

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