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Impedance matching is a common issue in a wireless power transfer (WPT) system. This paper summarizes impedance matching methods reported in the literature and gives a theoretical analysis on dc–dc converter for impedance matching in a WPT system. A buck–boost converter in discontinuous conduction mode has the characteristic of that the input resistance is independent of the load resistance and the...
The effect of influent for start-up of an ANAMMOX reactor was investigated under the concentration of dissolved oxygen (DO), which was not controlled, and low concentration of substrate conditions. In the 8L up flow anaerobic biofilm reactor, only 10g ANAMMOX sludge was added. The results show that the nitrogen removal rate increased from 0.23 kg/(m3·d) to 10.58 kg/(m3·d) by increasing the nitrogen...
Abstract-The research on efficiency and mechanism of removing the odor compound 2-MIB in water is performed by adopting the O3/H2O2 technology. And in particular, the effects of addition manner, mol ratio, pH value of the solution and water quality etc, on the 2-MIB degradation are studied. And the intermediate products in the oxidative degradation of 2-MIB were analyzed by GC/MS. It is found that...
Voltage and reactive power regulation capability of Central China Power Grid is researched in this paper when large-power is transmitted through UHV project which will be built in near future. At first, the basic condition of UHV and situation of voltage and reactive power when large-power is transmitted through UHV project are introduced. Then, several traditional and advanced voltage regulation...
This paper proposes a push-pull forward (PPF) three-level (TL) converter, which is suitable for low and wide-range input voltage applications, such as fuel cell power system. Half of the switches sustain half of the input voltage, and the others sustain one and one-half input voltage. Input ripple current and output filter inductor ripple current can be reduced with the TL waveform of the secondary...
This paper proposes a push-pull forward three-level converter (PPF TL converter) for high-voltage fuel cell applications. It integrates the advantages of the TL converter and the PPF converter. It can operate at both three-level (3L) mode and two-level (2L) mode, so it is suitable for wide input voltage application, such as fuel cell power system. Half of the switches sustain half of the input voltage...
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