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The unified power quality conditioner (UPQC) is known as an effective compensation device to improve PQ for sensitive end-users. This paper investigates the operation and control of a single-phase three-leg UPQC (TL-UPQC), where a novel space vector modulation method is proposed for naturally solving the coupling problem introduced by the common switching leg. The modulation method is similar to the...
This paper presents an analysis and a comparison of multilevel three-phase inverters based PWM modulators. Two different PWM strategies are used to turn on and off the switching devices, multilevel space vector modulation and multilevel carrier based modulation. The performance characteristics regarding the harmonic contents, switching losses and conduction losses have been computed. These characteristics...
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