电力电子系统集成技术发展的若干新思路

New Conceptions for Development of Power Electronics System Integration

分析了电力电子系统集成的基本要求和特点,从电路拓扑如何适应电力电子系统集成的角度出发,探索性提出了电力电子电路拓扑发展的3个新思路。为了提高拓扑的宽范围输入输出能力,提出了改善占空比调节特性的思路,从占空比的有效范围和有效占空比对输入输出变化的调整能力两个方面改善了拓扑性能。为进一步提高拓扑的宽范围适应性,提出了变结构的柔性变流器思路,并给出了拓扑切换的控制思路。为了兼容低端和高端场合的应用,实现电源的可升级功能,提出了模块可扩充性部件的思路。对于每个思路都代表性地提出了一些实施例。

Basic requirements and characteristics for power electronic system integration are specified in detail in this paper.Furthermore, three new conceptions about topology development for power electronic system integration are proposed. For the purpose of wide input voltage or output voltage range, conception of improving modulation performance of duty cycle by the two methods of increasing effective range of duty-ratio and enhancing its regulating ability of effective duty-ratio is proposed.For further improving the adaptability to wide range of the topology, consideration of flexible converter with prominent characteristic of transformable configuration is proposed,furthermore control strategy of switching action between two various topologies is presented as well.For increasing compatibility to application of both high line occasion and low line occasion,and moreover for achieving upgrading function of standard power supply,another novel consideration that features extended components is demonstrated.Several representative examples for every novel consideration are correspondingly presented.