FORMING METHOD OF CONTROL SIGNAL FOR 3-LEVEL NPC INVERTER, APPARATUS OF FORMING CONTROL SIGNAL FOR 3-LEVEL NPC INVERTER USING THEREOF

摘要

A method of forming a control signal for a 3-level neutral-point-clamped (NPC) inverter according to an embodiment includes a step of forming an offset voltage by the section of a phase current by receiving a phase current and a first reference voltage, a step of forming a second reference voltage by adding an offset voltage and a reference voltage from each section, and a step of forming a control signal by performing pulse width modulation (PWM) with the second reference voltage and a carrier.