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In this study, a duty cycle-based space-vector pulse-width modulation (SVPWM) with overmodulation and capacitor voltage balance control for three-phase three-level neutral-point clamped (NPC) inverters is presented. On the basis of simple linear calculations of three-phase reference voltages, the proposed SVPWM can be derived, which avoids the trigonometry operation required by the conventional SVPWM...
The static synchronous compensator(STATCOM) using power electronics as a shunt device of the Flexible AC Transmission Systems (FACTS) is attracting an increasing interest in power system research and in electric utilities. This paper proposes a novel multi-level structure topology with zigzag transformer for three-level inverter used in STATCOM. Moreover, selective harmonic elimination pulsewidth...
This paper presents the synchronous harmonic optimum pulsewidth modulation (SHOPWM) for three level diode clamped inverter. First, the problem of minimizing stator current harmonics when the asynchronous machine is fed by PWM inverter is introduced. A distortion factor in proportion to the total stator current harmonic distortion is selected for solving the problem. A subsection synchronization modulation...
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