一种新型非谐振型软开关交错并联Boost电路

发布时间：2019-05-28 22:45

【摘要】：提出一种新型非谐振型交错并联Boost零电压转换(ZVT)电路。在传统交错并联Boost拓扑基础上添加了一组由一个电感、两个电容、一个开关管、四个二极管组成的辅助网络,令主开关管实现了零电压开通与关断,辅助开关管实现了零电流开通与部分零电压关断,降低了开关损耗,提升了电路变换效率。软开关可在宽工作范围内有效实现,电路工作在连续电流模式(CCM),控制方式简明易行,辅助网络的引入没有给主开关管带来额外电流应力。通过复用部分辅助元件,提高了辅助网络利用率,减少了体积与费用;降低了开关过程中的dv/dt、di/dt,抑制了开关噪声。详细分析了电路拓扑结构、工作原理,并对主要参数进行了优化选取,最后通过实验验证了理论分析的正确性。
[Abstract]:A new type of non-resonant staggered parallel boost zero voltage conversion (ZVT) circuit is proposed. On the basis of the traditional staggered parallel Boost topology, a set of auxiliary networks composed of one inductor, two capacitors, one switch tube and four diode are added, so that the main switch tube can turn on and off the zero voltage. The auxiliary switch realizes zero current turn-on and partial zero voltage turn-off, reduces the switching loss and improves the circuit conversion efficiency. The soft switch can be realized effectively in a wide working range, the circuit works in continuous current mode (CCM), control mode is simple and easy, and the introduction of auxiliary network does not bring additional current stress to the main switch. By reusing some auxiliary components, the utilization rate of auxiliary network is improved, the volume and cost are reduced, and the switching noise is suppressed by dv/dt,di/dt, in the switching process. The topology and working principle of the circuit are analyzed in detail, and the main parameters are optimized. Finally, the correctness of the theoretical analysis is verified by experiments.
【作者单位】：同济大学电子与信息工程学院;
【基金】：国家高技术研究发展计划(863计划)项目资助(2011AA11A265,2011AA11A233)
【分类号】：TM46;U469.72

【参考文献】