基于交错并联控制的Boost电路的优化方法

An Optimization Method of the Interleaved Boost Circuit 

摘要:

文章主要提出了一种交错并联Boost电路的设计方法,包括了电流采样电路的设计,均流电路的设计,Interleave相位的锁相控制, 建立功率转换系统Boost变换器状态空间方程,求得小信号模型和电压电流开环传递函数,设计合理的补偿环节,获得良好的稳态和动态性能；并进行了实验验证；文章的设计方法能够有效减小boost模块的输出电流纹波和开关管的电流应力,提高了系统的稳定性和可靠性,而且系统动态性能得到很好的改善。

Abstract:

This paper proposes an interleaved Boost circuit design method, including the design of the current sampling circuit, the design of equalizing circuit, phase-locked phase of Interleave control, the establishment of the power conversion system of the Boost converter in the state space equation, obtain the small signal model and the voltage and current open-loop transfer function, compensation design reasonable, and the steady state and dynamic performance of the system is very good. And the experimental validation. Current design method in this paper can effectively reduce the boost module output ripple current and the stress on the switch, to improve the system stability and reliability, and the system dynamic performance is improved.