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Green energy systems such as those based on photovoltaic (PV) solar cells and fuel cells are often implemented with power sources that produce low DC voltages. A new high gain DC-DC converter is proposed in this paper. In the paper, the background related to the proposed converter is discussed, the proposed converter is introduced and its modes of operation and features are explained. The feasibility...
A new three-phase AC-DC converter with transformer isolation is proposed in this paper. The new converter is cheaper than previously proposed converters of the same type as it requires fewer passive and active components. Other features of the proposed converter include fewer conduction losses and less ripple current. In the paper, the operation of the proposed converter is explained and its features...
Quadratic converters have the voltage conversion ratios of two cascaded converters, but with fewer switches. They are not widely used, however, because they are generally less efficient than other converter types, but they can be useful for certain applications. In this paper, the characteristics of quadratic converters are explained, several examples of where they can be used in industrial applications...
In this paper, the modeling and control of a new three-level single-stage power-factor-corrected (PFC) ac/dc converter is presented. The converter integrates an AC/DC boost PFC converter and a three-level DC/DC converter. An averaged model of the new converter is derived in the paper and used to design a controller that regulates the output voltage in presence of the input voltage variation and load...
A new family of active auxiliary circuits that allows the power switch in single switch, pulsewidth modulated (PWM) converters to operate with zero-voltage switching (ZVS) is proposed in this paper. The auxiliary switch can operate with a zero-current switching (ZCS) turn-on and turn-off without increasing the peak current stresses of the main switch. The feasibility of the new family of auxiliary...
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