C

Dc-dc converter topologies with isolation. a full-bridge b single-inductor push-pull c double-inductor push-pull. In order to keep the magnetic components compact high switching frequencies in the range of 20 - 100 kHz are typically employed. The full-bridge converter is usually utilized at power levels above 750 W. The advantages of this topology are good transformer utilization - bipolar magnetization of the core, good performance with current programmed control - reduced DC...

Mechanical Power

P wer c nversi n amp Power transmission Power conversion Power conversion amp Power transmission power control wer contro Fig. 1. Conversion from wind power to electrical power in a wind turbine 11J. P wer c nversi n amp Power transmission Power conversion Power conversion amp Power transmission power control wer contro Fig. 1. Conversion from wind power to electrical power in a wind turbine 11J. A typical Cp-1 curve for a fixed pitch angle 3 is shown in Fig. 3. It can be seen that there is a...

Aqueous Alkaline

Curve Fuel Cell

The efficiency of the fuel cell is quite high 40 -60 . Also the waste heat generated by the fuel cell can usually be used for cogeneration such as steam, air-conditioning, hot air and heating, then the overall efficiency of such a system can be as high as 80 . Current Density mA cm' Fig. 4. V-I characteristics of a fuel cell 12 . A typical curve of the cell electrical voltage against current density is shown in Fig. 4. It can be seen that there exists a region where the voltage drop is linearly...