ABSTRACT A coupled-inductor boost (CIB) converter is a popular solution for non-isolated high step-up applications since a high voltage gain can be easily achieved by adjusting the turn ratio of the coupled-inductor (CI). On the other hand, at the cost of utilizing a CI, a CIB converter requires voltage snubbers. In order to relieve the drawbacks caused by a CI and to further improve the efficiency, the pulse-width modulation (PWM) partial series resonant (PSR) CIB converter is proposed. In the PSR CIB converter, the resonant operation is achieved with only a small modification to the conventional CIB converter without additional components. This resonant operation significantly reduces the turn-off loss of the switch and the reverse recovery of the high voltage diode. Moreover, it does not cause a large circulating current so that a conduction loss can still maintain similar to that of the conventional CIB converter. Experimental testing of a 24-V input, 110-W 220-V output prototype verifies the behavior and performance of the proposed circuit.

中文翻译：

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用于高升压 DC-DC 应用的部分串联谐振耦合电感升压转换器

摘要 耦合电感升压 (CIB) 转换器是非隔离式高升压应用的流行解决方案，因为通过调整耦合电感 (CI) 的匝数比可以轻松实现高电压增益。另一方面，以使用 CI 为代价，CIB 转换器需要电压缓冲器。为了缓解CI带来的缺点并进一步提高效率，提出了脉宽调制（PWM）部分串联谐振（PSR）CIB转换器。在 PSR CIB 转换器中，只需对传统 CIB 转换器进行少量修改即可实现谐振操作，无需额外组件。这种谐振操作显着降低了开关的关断损耗和高压二极管的反向恢复。而且，不会引起较大的循环电流，因此导通损耗仍可保持与传统CIB转换器相似。24V 输入、110W 220V 输出原型的实验测试验证了所提议电路的行为和性能。