CONTROLLER FOR LOAD START-UP SYSTEM Russian patent published in 2013 - IPC H02P1/16 H02P1/26 H02P27/08 H02P21/00 H02M1/14 H02M7/527 H02M7/53846 B60L9/16 

FIELD: electricity.

SUBSTANCE: controller for load start-up system, which includes converter for changing output voltage of direct current power supply source, inverter for conversion of direct current voltage supplied from converter to three-phase alternating current voltage that is supplied to load, and smoothing capacitor connected parallel between converter and inverter, includes controller of inverter for pulse-width modulation (PWM) control of inverter with two-phase modulation and controller of converter for PWM control of converter. Frequencies of carrier signal of inverter, which is used in controller of inverter, and carrier signal of converter, which is used in controller of converter, are the same. And when the point of time, to which input electric current to inverter is generated, which corresponds to carrier signal of inverter, is diverted for the specified period of time, phase difference between carrier signal of inverter and carrier signal of converter is offset by the value equal to the specified period.

EFFECT: reduction of pulsating current in smoothing capacitor even at PWM control of inverter in two-phase modulation mode.

6 cl, 18 dwg