Parametric filters in compensation of influence of nonlinear receiver on power network

Archives of Electrical Engineering

“…In order to construct parametric elements, it is necessary to use operational amplifiers, multipliers, and classical RLC elements as well as autonomic sources of controlling voltages. Those elements can be dedicated to construct many more complex parametric systems with various applications [17][18][19][20]28].…”

“…Parametric filters can be used in various fields such as: signal processing and sampling systems [11][12][13][14][15][16] or filtering of signals and noise elimination [1,2,12,13,17,18]. In a power network one can encounter LTV systems used for current compensation [19,20]. Moreover, those systems are applied also as: [21], chaos generators [22], electromagnetic launchers [23] and medicine devices [24].…”

Modelling of the First-Order Time-Varying Filters with Periodically Variable Coefficients

“…Many theoretical works [1][2][3][4][5] as well as practical applications have been devoted to these systems. In particular, LTV systems can be applied in signal processing [6][7][8][9][10][11], especially in sampling systems [12], signal filtering and noise reduction [7,8,[13][14][15][16][17], and current compensators in power networks [18,19], amplifiers [5,20], chaos generators [21], electromagnetic launchers [22], and medical devices [23]. The main advantages of LTV system application include improvement of the dynamic properties of systems and reduction of the transient state [16,24].…”

Active compensation system of influence of non‐linear receivers on power network

“…For these types of loads the waveforms of voltages, and especially currents, are more deformed and the compensation systems mentioned above often prove to be unsatisfactory, especially in case of dynamic states. Nowadays, in order to increase the efficiency of compensation, compensators in the form of hybrid system or active power filters are often used (Bayod Rujula and Sanz Badia, 1995;Fra Îckowiak et al, 1996;Gwo Âz Âdz  and Porada, 1996;Koozehkanani et al, 1995;Piro Âg, 1996;Verdelho and Marques, 1995).…”

“…It is possible to eliminate this current by generating current source, which supplies equal current in opposite phase to differential current. In practice obtaining such a source is difficult and it requires application of active systems with parametric elements (Fra Îckowiak et al, 1996;Gwo Âzdz and Porada, 1996) or controlled current power sources.…”