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RA»UNANJE SREDNJE I EFEKTIVNE<br />
VRIJEDNOSTI STRUJE (NAPONA)<br />
SLOÆENIH VALNIH OBLIKA<br />
CALCULATION OF THE MEAN AND<br />
EFFECTIVE CURRENT (VOLTAGE)<br />
VALUES OF COMPLEX WAVEFORMS<br />
Prof. dr. sc. Branislav KuzmanoviÊ,<br />
NovaËki Vidikovac 6, 10040 Zagreb,Hrvatska<br />
Dr. sc. Zoran Baus, Siemens d.d., Heinzlova 70 a, 10000 Zagreb, Hrvatska<br />
Mr. sc. Luka FerkoviÊ, SveuËiliπte u Zagrebu, Fakultet elektrotehnike i<br />
raËunarstva, Unska 3,10000 Zagreb, Hrvatska<br />
RaËunanje srednje i efektivne vrijednosti struje (napona) sloæenih valnih oblika svodi se na<br />
rjeπavanje integrala, πto veÊini inæenjera predstavlja odreappleene teπkoÊe.<br />
Danas se u praksi pojavljuje u nizu viπe razliËitih valnih oblika, πto joπ viπe komplicira<br />
postupak rjeπavanja. Ako se znaju srednja i efektivna vrijednost tipiËnih oblika, onda se taj<br />
postupak moæe bitno pojednostaviti, kako je prikazano u ovom Ëlanku.<br />
What the calculation of the mean and effective current (voltage) values of complex<br />
waveforms amounts to is dealing with integrals, and that poses some difficulties to most<br />
engineers. In today’s practice the problem makes itself manifest in a series of different<br />
waveforms, which makes the process of its solving all the more complicated.<br />
However, if the mean and effective values of typical forms are known, the process can be<br />
greatly simplified, and that’s what the present article is about.<br />
KljuËne rijeËi: efektivna vrijednost, srednja vrijednost, struja (napon) sloæenih valnih oblika<br />
Keywords: current (voltage) complex waveforms, effective value, mean value<br />
Kennedy, KuzmanoviÊ, M. W., B., StaniÊ, Baus, Z., FerkoviÊ, Energetska L., RaËunanje politika u Europi srednje i..., i Energija, efektivne god. vrijednosti 56(2007), struje..., br. 3., Energija, str. 268∑291 god. 56(2007), br. 3., str. 374∑387<br />
Kennedy, KuzmanoviÊ, M. W., B., StaniÊ, Baus, Z., FerkoviÊ, Energy Policy L., Calculation in Europe of and..., the Mean Energija, and Effective vol. 56(2007), Current…, No. 3, pp. Energija, 268∑291 vol. 56(2007), No. 3, pp. 374∑387 374
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