METHOD OF WIDTH-PULSE SIGNALS FORMATION FOR CONTROL OF AUTONOMOUS INVERTER Russian patent published in 2008 - IPC H02M7/5395 

FIELD: electricity.

SUBSTANCE: invention is intended for control of autonomous inverters with width-pulse modulation of output voltages and may be used for frequency regulation of induction motor speed. Technical result consists in increase of output voltage quality and as a result expansion of regulation range and reduction of losses in the motor. Specified technical result is achieved by the following: in the known method of centered width-pulse modulation, which is based on comparison of support signal of triangular shape and three modulating sinusoidal signals, additionally simultaneous change of modulating signals type is performed six times per period in points that correspond to natural commutation of output voltages, and logical level of output control signals.

EFFECT: expansion of inverter control range with reduction of losses.

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