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Energy Storage Charging Design of SiC SEPIC LLC Voltage Tracking Technology

机译：SiC SEPIC LLC电压跟踪技术的储能充电设计

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摘要

In this paper, a new SEPIC LLC energy storage device is designed by using the third generation semiconductor device silicon carbide (SiC). By analyzing the charging curve and considering the characteristics of the battery load, the working area of the LLC circuit is obtained, thus an optimal LLC design scheme is put forward. In this way, even if in the worse working environment, the circuit can work stably in the ZVS region. In addition, combined with the current voltage variation during charging and the current SEPIC PFC buck-boost characteristics, a voltage tracking technique is proposed. By changing the input voltage LLC and ensuring LLC work near the resonant frequency, which can meet the needs of 11c rectifier diode to realize zcs, and improve the power in the charging process. Finally, combined with the characteristics of SiC, the efficiency of SEPIC LLC can be increased to 88%.
机译：在本文中，通过使用第三代半导体器件碳化硅（SiC）设计了一种新型SEPIC LLC储能器件。通过分析充电曲线并考虑电池负载的特性，得到了LLC电路的工作区域，从而提出了一种最佳的LLC设计方案。这样，即使在较差的工作环境中，电路也可以在ZVS区域稳定工作。此外，结合充电过程中的当前电压变化和当前的SEPIC PFC降压-升压特性，提出了一种电压跟踪技术。通过改变输入电压LLC并确保LLC在谐振频率附近工作，可以满足11c整流二极管实现zcs的需要，并提高充电过程中的功率。最后，结合SiC的特性，SEPIC LLC的效率可以提高到88％。

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