全负载DC-DC变换器电荷平衡数字控制  

Charge Balance Digital Control for DC-DC Converters With Full Load Range

作　　者：邱楹[1] 陈希有[1] 仲崇权[1] 齐琛[1] 

机构地区：[1]大连理工大学电子信息与电气工程学部,辽宁省大连市116023

出　　处：《中国电机工程学报》2013年第18期40-47,17,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50877007)~~

摘　　要：提出一种适用于连续模式和断续模式DC-DC变换器的电荷平衡数字控制方法。该方法基于并行运算和组合逻辑,通过连续计算和比较平均充电电流和输出电流从而生成期望的占空比。得益于该机制,新的方法对跨越两种导通模式的扰动仍具有良好的动态性能。该方法通过引入双模控制策略利用线性补偿器消除稳态误差,且适用于包括Buck,Boost和Buck-Boost在内的3种基本变换器。对同相Buck-Boost变换器的仿真与实验验证了该方法的有效性。A charge balance digital control method is proposed for dc-dc converters operating in both continuous conduction mode（CCM） and discontinuous conduction mode（DCM）.To achieve the desired duty ratio,the controller uses parallel computing and combinational logic to calculate and compare the average charge current and the output current.Thanks to this scheme,a good dynamic performance is guaranteed even for disturbance across different conduction modes.The tight voltage regulation is also provided by incorporating the dual mode control strategy which utilizes a linear compensator during steady state.The control method is valid for three basic converters： buck,boost,and buck-boost.Simulation and experimental results on a positive buck-boost converter confirm the effectiveness of the proposed solution.

关 键 词：DC-DC变换器 连续模式 断续模式 数字控制 电荷平衡 

分 类 号：TM46[电气工程—电器]