摘要
为了提升蓄电池充放电控制的准确性,对用户多电源供电储能系统蓄电池充放电控制进行研究。通过设计双向AC/DC变换器实现蓄电池充放电控制,以双向AC/DC变换器一般数学模型为基础,加入同步旋转坐标系构建双向AC/DC变换器dq模型,提升蓄电池充放电控制的准确性;并网运行时,双向AC/DC变换器利用PQ控制策略,完成蓄电池充放电过程中功率平衡控制;离网运行时,双向AC/DC变换器利用V/f控制策略,完成蓄电池充放电过程中电压与频率的平衡控制。实验结果表明,所研究蓄电池充放电控制策略能够有效控制蓄电池充放电,提升蓄电池充放电过程中功率平衡控制的准确性。
For the purpose of improving the accuracy of battery charging and discharging control,research on battery charging and discharging control of users’multipower supply energy storage system is carried out.By designing a two-way AC/DC converter to achieve battery charge and discharge control,based on the general mathematical model of the two-way AC/DC converter,a synchronous rotating coordinate system was added to build a two-way AC/DC converter dq model to improve the accuracy of battery charge and discharge control;In gridconnected operation,the bidirectional AC/DC converter uses the PQ control strategy to complete the power balance control during battery charging and discharging;when offgrid,the bidirectional AC/DC converter uses the V/f control strategy to complete the battery charging and discharging process balance control of middle voltage and frequency.Experimental results prove that the researched battery charge and discharge control strategy can effectively control the battery charge and discharge,and improve the accuracy of power balance control during the battery charge and discharge process.
作者
沈学良
王贺云
贾亚飞
胡亚博
杨振华
SHEN Xueliang;WANG Heyun;JIA Yafei;HU Yabo;YANG Zhenhua(State Grid Xiong’an New Area Electric Power Supply Company, Xiong’an New Area 071000, China;Pinggao Group Co.,Ltd.,Pingdingshan 467000,China)
出处
《机械与电子》
2021年第4期59-64,共6页
Machinery & Electronics
基金
国网河北省电力有限公司科技项目资助(B304XQ200008)。
关键词
用户
多电源
供电储能系统
蓄电池
充放电控制
变换器
user
multi-power
power supply energy storage system
storage battery
charge and discharge control
converter
