TY - GEN
T1 - Input current-ripple reduction of a pulse-link DC-AC converter for fuel cells
AU - Fukushima, Kentaro
AU - Norigoe, Isami
AU - Ninomiya, Tamotsu
AU - Shoyama, Masahito
AU - Harada, Yosuke
AU - Tsukakoshi, Kenta
PY - 2008
Y1 - 2008
N2 - This paper considers that the mechanism of input current-ripple on pulse-link DC-AC converter for fuel cells. And the reduction methods are shown. In general, fuel cells are weak about current ripple. The current-ripple damages to the fuel capacity and life span because the chemical reaction time when generates electricity is much slower than commercial frequency. Therefore, the input current-ripple reduction is essential factor in the DC-AC converter for fuel cells applications. In the conventional DC-AC converter topology, large smoothing capacitor is worked as the input current-ripple reduction. However, this large capacitor makes it difficult to reduce the size of DC-AC converter unit. Authors have proposed a novel topology called as pulse-link DC-AC converter. In this topology, a large capacitor for the smoothed DC power source is not needed because the first-stage boost converter provides boosted voltage pulse directly to PWM inverter. Instead, a series-connected LC circuit is inserted to reduce the input current-ripple. Furthermore, when duty ratio is controlled by sensing input current, input current-ripple is reduced less than 1Amp.
AB - This paper considers that the mechanism of input current-ripple on pulse-link DC-AC converter for fuel cells. And the reduction methods are shown. In general, fuel cells are weak about current ripple. The current-ripple damages to the fuel capacity and life span because the chemical reaction time when generates electricity is much slower than commercial frequency. Therefore, the input current-ripple reduction is essential factor in the DC-AC converter for fuel cells applications. In the conventional DC-AC converter topology, large smoothing capacitor is worked as the input current-ripple reduction. However, this large capacitor makes it difficult to reduce the size of DC-AC converter unit. Authors have proposed a novel topology called as pulse-link DC-AC converter. In this topology, a large capacitor for the smoothed DC power source is not needed because the first-stage boost converter provides boosted voltage pulse directly to PWM inverter. Instead, a series-connected LC circuit is inserted to reduce the input current-ripple. Furthermore, when duty ratio is controlled by sensing input current, input current-ripple is reduced less than 1Amp.
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U2 - 10.1109/INTLEC.2008.4664104
DO - 10.1109/INTLEC.2008.4664104
M3 - Conference contribution
AN - SCOPUS:57949114517
SN - 9781424420568
T3 - INTELEC, International Telecommunications Energy Conference (Proceedings)
BT - INTELEC 2008
T2 - 30th Annual International Telecommunications Energy Conference, INTELEC 2008
Y2 - 14 September 2008 through 18 September 2008
ER -