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A space vector PWM (SVPWM) algorithm is proposed for the single-phase three-level NPC inverter, and the cause of the imbalance of the capacitor voltage in DC-side is analyzed. In order to lower the switching loss and avoid the abrupt change of output voltage vectors, an optimal SVPWM algorithm is proposed, it makes use of five-vectors modulation in which the positive (or negative) small vectors are...
With the rapid development and promotion of distributed generation technology, microturbine generation system (MTGS) appears extremely superior both in commercial and scientific aspects. According to the ??controllable load?? exterior characters for distributed generators under the parallel operation of microgrid, a complete mathematical model, regarding a high speed and single shaft microturbine...
Control of power quality is one of the biggest issues for a microgrid. Voltage sags, flickers, interruptions, etc. are more critical in a small system with few generators. Super Capacitor Energy Storage (SCES) system applied to microgrid in this paper has the advantage of quick response, high power output, high efficiency and the ability to output both active and reactive power. The main structure...
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