High step-up boost converter with coupled inductor and switched capacitor
High step-up boost converter with coupled inductor and switched capacitor
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DOI：
10.1049/cp.2010.0009
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发表时间：
2010-04
期刊：
影响因子：
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通讯作者：
Yi Zhao;Wuhua Li;Yan Deng;Xiangning He;S. Lambert;V. Pickert
中科院分区：
文献类型：
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作者：
Yi Zhao;Wuhua Li;Yan Deng;Xiangning He;S. Lambert;V. Pickert
许多工业应用需要非隔离式高升压单相DC/DC转换器。现有的传统DC/DC变换器存在占空比大、开关电压应力高、高峰电流大等缺点。由于采用了由耦合电感、开关电容和附加二极管组成的倍压单元，该变换器可以提供非常高的电压增益而不会产生极端的占空比。采用有源箝位技术的变换器可以回收泄漏能量。不幸的是，它增加了拓扑结构的复杂性。该变换器采用无源无损箝位电路代替有源箝位电路，实现了与有源箝位电路类似的功能，且性能优于有源箝位电路。由于泄漏能量回收和输出二极管反向恢复缓解，实现了高效率和高功率密度。
Many industrial applications require non-isolated high step-up single-phase DC/DC converters. Some existed conventional DC/DC converters have the disadvantages of large duty cycle, high switch voltage stress and high peak current. The proposed converter can provide very high voltage gain without extreme duty cycle due to the voltage doubler cell, which is composed of a coupled inductor, a switched capacitor and an additional diode. The converter with active clamp scheme can recycle the leakage energy. Unfortunately, it increases the topology complexity. The presented converter, which employs the passive lossless clamp circuit instead of the active clamp circuit, can achieve the similar functions and show better performance than its active-clamp counterpart. High efficiency and high power density is achieved due to the leakage energy recycle and output diode reverse-recovery alleviation.