An ZVS DC-DC converter for High voltage and Efficiency Gain With Reduced Ripple Current
S. Freeda Angeline Rachel1, J. Jency Joseph2
1S.Freeda Angeline Rachel, Department of EEE, Karunya University, Coimbatore, India.
2J.Jency Joseph, Department of EEE, Karunya University, Coimbatore, India.
Manuscript received on January 16, 2013. | Revised Manuscript received on February 14, 2013. | Manuscript published on February 30, 2013. | PP: 245-248 | Volume-2 Issue-3, February 2013. | Retrieval Number: C1079022313 /2013©BEIESP

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Abstract: The power-generation market, has shown obvious growth. However, a high voltage and efficiency gain is essential for the fuel cell and PV panel and for other appliances. The high step –up converter in the proposed converter provides ripple free input current. The full bridge converter provides high voltage gain. An APWM Full Bridge Boost converters are widely used in application where the output voltage is considerably higher than the input voltage. Zero Voltage Switching(ZVS )is typically implemented in the switches. ZVS APWM DC-DC Full bridge converter that does not have any drawbacks of that other converters of this type have such as complicated auxillary circuit, increased current stress in the main power switches and the load dependent ZVS operation. In this proposed method an interleaved technique of Boost and Full Bridge converter is used. The different modes of operation of MOSFET has been discussed.. Moreover converter has high efficiency because of soft switching operation in switches. A 24V input voltage, 350V output voltage, and 168W output power simulation circuit of the proposed converter has been implemented and its efficiency is up to 87.5% .
Keywords: Full bridge converter, Boost converter, Zero-voltage switching, Soft switching, ZVS-APWM clamping circuit.