基于SPWM的通信电源蓄电池组并联供电控制设计

Design of Parallel Power Supply Control for Communication Storage Battery Pack Based on SPWM

为提升整个电源系统的稳定性,提出基于正弦脉冲宽度调制(Sinusoidal Pulse Width Modulation,SPWM)的通信电源蓄电池组并联供电控制设计研究。该设计先采用单极性倍频SPWM调制技术,有效调节电源系统的等效开关频率,并结合含有正弦量的整流器模块,设计并联蓄电池开环中的传递函数,确定整流侧的电流参数输入值,实现并联供电控制。测试结果表明,应用所提方法,即使在电源系统负荷发生显著变化的情况下,电池组间的供电差值始终被控制在40.0 W以内,应用效果较好。

In order to improve the stability of the whole power supply system,the design of parallel power supply control based on Sinusoidal Pulse Width Modulation(SPWM)is proposed.The design first adopts the unipolar frequency doubling SPWM modulation technology to effectively adjust the equivalent switching frequency of the power supply system,and then combined with the sinusoidal internal mode,the transfer function in the open ring of the parallel battery is designed to determine the input value of the current parameter on the rectifier side,so as to realize the parallel power supply control.The test results show that by applying the proposed method,even if the power supply difference between the battery packs is always controlled within 40.0 W,and the application effect is good.