A New High-Voltage Gain Non-Isolated Zero-Current-Switching Bidirectional DC-DC Converter

作者：Thumma Rajesh; Bhajana Veera Venkata Subrahmanya Kumar^*; Drabek Pavel; Jara Martin

来源：ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, 2018, 43(6): 2713-2723.

DOI：10.1007/s13369-017-2702-0

• Zero-current switching
• Charging mode
• Discharging mode
• Bidirectional
• DC-DC
• Electric vehicle applications

This paper deals with a new high-voltage-gain zero-current switching bidirectional DC-DC converter for electric vehicles. The hard-switched non-isolated bidirectional converter integrated with auxiliary active switches and resonant elements were designed to attain the zero-current switching turn-off operation in the main IGBTs. This converter has dual characteristics as battery charge (buck) mode and discharge (boost) mode. By individual mode, all the active switches operate under zero-current switching turn-off operation for the minimized turn-off losses. The proposed converter has high voltage gain with reduced turn-off losses when operating in discharge mode and has low output voltage conversion in charge mode. The topology described with the aid of theoretical waveforms were tested using a laboratory prototype 70/300 V, 800 W system functioned under 50 kHz operating frequency.

• 出版日期2018-6