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Special Issue Article Open Access
A naturally clamped zero-current commutated soft switching bidirectional full-bridge isolated dc/dc converter is implemented by eliminating the necessity for passive snubbers. Switching losses are reduced significantly owing to zero-current switching of primary side devices and zero-voltage switching of secondary-side devices. Soft switching and voltage clamping are inherent and load independent. The voltage across primary-side devices is independent of duty cycle with varying input voltage and output power and clamped at rather low reflected output voltage, enabling the use of semiconductor devices of low voltage rating. These merits make the converter promising for fuel cell vehicles application, front-end dc/dc power conversion for fuel cell inverters, and energy storage in the DC/DC converter is analysed with zero current Commutation (ZCC) and the natural voltage clamping (NVC) has been analysed. Experiment simulated using MATLAB 2010.Ra and output power of 500W is obtained which is suitable for low power automotive ac motor.
ZCS(zero current switching), ZVS(zero voltage switching), ZCC(zero current commutation), NVC(nominal voltage clamping)., Jet Fuel