一种储能直流电源的前馈控制策略.pdfVIP

ELECTRONICS QUALITY 一种储能直流电源的前馈控制策略 丁凯袁 胡云 江西赣锋锂电科技股份有限公司袁 江西新余 338025冤 摘 要 以储能直流电源为研究对象袁 引入了一种前馈控制方法遥 首先袁 详细地介绍了传统闭 的缺陷袁 分析了引入前馈 后的控制策略对电源外特性的影响曰 然后袁 对电 拓扑结构尧 控制算法和控制策略等进行理论分析袁 用DSP 实现数字控制袁 之后进行实物研制曰 最后袁 基于全桥DC-DC变换器的拓扑结构袁 分析了双闭环控制策略无法提高开关电源外部特性的主 要原因袁 研究了一种负载电流前馈控制的双闭环控制策略遥 该策略在电压和电流双闭 的基础上增加了一个负载电流补偿 节袁 其中电压 采用了PID控制袁 而电流 则采用了滞环控制袁 这种控制方式不仅能有效地提高电源的外部特性袁 而且 能在不同的电压等级下获得高质量的直流输出遥 关键词 直流电源曰 前馈控制曰 双闭 控制曰 PID控制 中国分类号 TN 86 文献标识码 A 文章编号 1003-0107 2023冤 04-0040-04 doi:10.3969/j .issn.1003-0107.2023.04.011 A Feedforward Control Strategy of DC Power Supply for Energy Storage DING Kai 袁 HU Yun 渊Jiangxi Ganfeng Lithium Battery Technology Co. 袁 Ltd. 袁 Xinyu 338025 袁 China 冤 Abstract 院 Taking the energy storage DC power supply as the research object 袁 a feedforward control method is intro duced. Firstly 袁 the defects of the traditional closed-loop is introduced in detail袁 and the influence of the control strat egy after the introduction of feedforward on the external characteristics of the power supply is analyzed. Then the cir cuit topology 袁 control algorithm and control strategy are analyzed in theory . The digital control is realized by DSP袁 and then the real object is developed. Finally袁 based on the topology of full bridge DC -DC converter 袁 the main reason why the double closed loop control strategy can not improve the external characteristics of switching power supply is analyzed 袁 and a double closed loop control strategy of load current feedforward control is studied. This strategy adds a load current compensation link on the basis of double closed-loop