基于DSP的ZVS双向降压+升压变换器数字控制策略

2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG) Pub Date : 2018-04-22 DOI:10.1109/IGBSG.2018.8393570

N. A. Dung, Pham Phu Hieu, H. Chiu, Y. Hsieh, Jing-Yuan Lin

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引用次数: 6

摘要

非隔离型双向DC-DC转换器是混合动力汽车(HEV)或燃料电池汽车(FCV)低功率或中功率应用中最流行的拓扑结构。这类变换器具有电路拓扑简单、双向流动、零电压开关(ZVS)、效率高、功率密度高等优点。所有mosfet的导通ZVS是通过在每个开关周期的开始和结束时电感电流的负偏移来实现的。要做到这一点，转换器需要一个复杂的开关策略，最好由数字信号处理(DSP)实现。本文给出了保证该变换器ZVS条件的开关方式的数字实现。通过5kW样机验证了该控制方案的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A DSP based digital control strategy for ZVS bidirectional Buck+Boost converter

The non-isolated bidirectional DC-DC converters are the most popular topology for low or medium power of the hybrid electric vehicle (HEV) or fuel cell vehicle (FCV) applications. These kinds of converters have the advantages of simple circuit topology, bidirectional flows, zero-voltage-switching (ZVS), high efficiency, and high power density. The turned-on ZVS for all MOSFETs is achieved by the negative offset of the inductor current at the beginning and the end of each switching period. To do this, the converter requires a complex switching strategy which is preferred to be implemented by the digital signal processing (DSP). This paper presents the digital implementation of the switching pattern to ensure the ZVS condition for such converter. A 5kW prototype is performed to verify the capability of such control scheme.

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2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)

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