Efficient Bidirectional DC-DC Converter using Digital Adaptive Frequency Modulation

被引：7
作者：
Lazar, Merril C. [1 ]
Shreelakshmi, M. P. [1 ]
机构：
[1] NIT Calicut, Dept Elect Engn, Calicut, Kerala, India
来源：
2021 IEEE INTERNATIONAL POWER AND RENEWABLE ENERGY CONFERENCE (IPRECON) | 2021年
关键词：
bidirectional dc-dc converter; zero voltage switching; zero-crossing detector; digital adaptive frequency control; MANAGEMENT;
D O I：
10.1109/IPRECON52453.2021.9641029
中图分类号：
学科分类号：
摘要：
A digital adaptive frequency modulated bidirectional dc-dc converter is introduced for an efficient and reliable energy management system. The proposed system achieves zero voltage switching (ZVS) without an additional zero-crossing detector (ZCD) circuit. To achieve the ZVS condition, frequency is calculated adaptively in every cycle. As this method does not involve a ZCD circuit, it can be easily retrofitted to any circuit configuration. The proposed system satisfies the ZVS condition for a wide range of voltage (Battery voltage 12V-24V & Bus voltage 28V-36V) and load variations. The proposed digital adaptive frequency control is validated in an interleaved bidirectional dc-dc converter topology. The interleaving technique reduces the effective conduction loss and current ripple, thus increasing the converter performance and overall efficiency. A 200W interleaved bidirectional dc-dc converter for battery charging/discharging is designed and digital adaptive frequency control is validated in a MATLAB/Simulink platform. The results are encouraging.
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页数：6
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