基于多相并联和电感储能的准方波脉冲电流源  

Quasi-square Pulse Current Source Based on Multiphase Parallel and Inductive Storage

作　　者：袁志宝 许海平[1] 原增泉[1] YUAN Zhibao;XU Haiping;YUAN Zengquan(Key Laboratory of Power Electronics and Electric Drive(Institute of Electrical Engineering,Chinese Academy of Sciences),Haidian District,Beijing 100190,China;University of Chinese Academy of Sciences,Shijingshan District,Beijing 100049,China)

机构地区：[1]中国科学院电力电子与电气驱动重点实验室(中国科学院电工研究所),北京市海淀区100190 [2]中国科学院大学,北京市石景山区100049

出　　处：《中国电机工程学报》2021年第22期7586-7595,共10页Proceedings of the CSEE

基　　金：中国科学院电工研究所科研基金项目(E1553501)。

摘　　要：工作在准连续工作模式下的半导体激光器驱动电源,其脉冲放电级常采用线性电流源,具有波形质量高的特点,但高功率应用下有较大的功率损耗,且负载适应能力差。开关型电流源效率高,自适应负载能力强,但在脉冲电流源的研制上面临诸多困难,如脉冲沿响应和低电流纹波等。为此,该文提出一种新型的基于多相并联和电感储能的脉冲电流源拓扑,通过电感预储能和脉冲开关电路,以产生快速的脉冲沿响应;采用多相并联电路,并通过移相策略,实现高功率和平顶电流的低纹波。同时对拓扑的S-DCM和S-CCM 2种不同模式进行分析,得到高效率和高重频的工作模式。提出一种基于固定占空比和平均均流的混合控制方法,实现对脉冲平顶电流的快响应和高精度控制。最后,通过仿真和实验证实了该拓扑结构和控制算法的正确性与可行性。Linear power supply topology with excellent performance waveform is a common driven current source topology for high power laser driver in quasi-continuous operation mode(QCW). Owing to its linear operation, it has a large power loss and poor load adaptability, especially in high power applications. Switched mode power supply has a higher efficiency, however, many challenges have been proposed, such as fast pulse edge, low current ripple. This paper proposed a pulse current source topology based on multiphase parallel and inductive energy storage. The inductive pre-charge and pulse circuit were used to generate fast rise and fall edge. Multiphase parallel was adopted to realize high power and low current ripple of flat-top current by using phase-shifting method. The proposed topology and its two different operating modes of S-DCM and S-CCM were analyzed in detail and the conditions of repetition frequency and high efficiency in two modes were given. A hybrid high precision control method of average current sharing and fixed duty cycle was proposed for pulse source control. The correctness of theoretical is verified by simulation and experimental results.

关 键 词：脉冲电流源 准连续 多相并联 电感储能 快响应 

分 类 号：TM46[电气工程—电器]