一种改进的最优轨迹控制策略  

One Improved Optimal Trajectory Control Strategy

作　　者：吴俊娟[1] 孙孝峰[1] 邬伟扬[1] 

机构地区：[1]燕山大学,电力电子节能与传动控制河北省重点实验室,河北秦皇岛066004

出　　处：《电力电子技术》2011年第3期1-3,共3页Power Electronics

基　　金：国家自然科学基金资助(51077112);河北省自然科学基金资助(E2009000426)~~

摘　　要：提出一种改进的最优轨迹控制策略,介绍了控制方法,并利用状态平面分析法得到了谐振变换器在改进最优轨迹控制方式下的状态平面图。然后根据状态平面图详细推导了开关频率高于谐振频率时的控制法则,以及开关频率低于谐振频率时的控制法则。最后搭建了闭环电路,通过实验验证了控制法则的正确性,结果表明,改进的最优轨迹控制方案不但具有移相及定频控制的优点,还具有最优轨迹控制响应速度快的优点。One improved optimal trajectory control strategy is proposed.The control method is introduced,and the state-plane diagram of the series resonant converter under improved optimal trajectory control is derived according to the state-plane analysis method.Then,the control laws in the case of switching frequency above the resonant frequency are derived in detail,and the case of below the switching frequency is also got.At last,the closed-loop circuit is given,and the control method is validated by simulation and experiment.The results show that series resonant converter under improved optimal trajectory control has the merits of good dynamic response and constant switching frequency.

关 键 词：变换器 移相控制 最优轨迹控制 

分 类 号：TM46[电气工程—电器]