A DSP controlled resonant active filter for power conditioning in three-phase industrial power systems

Backstepping control of three-phase three-level four-leg shunt active power filter

“…In addition, SAPFs offer high efficiency [6] and perform effectively on lower-order harmonics such as 3rd, 5th, 7th which are generated by the nonlinear loads [7].…”

Mitigation of pulse-width-modulation distortion using a digital predistorter based on memory polynomials

“…where SiðzÞ ¼ R z 0 sin ðτÞ=τ dτ is the sine integral function. In summary, the modulating signal samples x n are used to derive the duty cycles w n , which in turn allows the construction of the analog PWM signal p(t) in (1). The baseband content in the frequency range ½0 f s =2 of p(t) is represented by the discrete-time samples y n in (2).…”

“…This binary signal can be used to drive amplifier circuits that have transistors operating as switches (on-off, rather than in their active region), which results in a reduced power consumption, typically achieving an efficiency above 90%. PWM is used in different applications, from power electronics [1], to audio amplifiers [2] and recently, RF transmitters [3]. It is particularly relevant for portable applications [4], where efficiency is one of the main concerns, e.g.…”

Güç Kalitesi Olay İşaretlerinin LabVIEW ile Üretilmesi ve Doğrulanması

“…Elektrik güç sistemi üretimden tüketime uzanan süreç boyunca hem sistem içi hem de sistem dışı çeşitli etkilere maruz kalmaktadır. Elektrik enerjisinin kullanımı yaygınlaştıkça, özellikle yarı iletken temelli aktif elektronik bileşenler içeren aygıtların kullanımının artması ile kullanıcı taraflı bozucu etkiler artış göstermektedir [1]. Güç sistemi bileşenleri için belirli standartların tanımlanmasıyla "Güç Kalitesi" (Power Quality) kavramı ortaya çıkmıştır.…”