中频下双级矩阵变换器整流级相位前馈校正算法  

Feedforward correction algorithm for phase of rectification stage of TSMC at medium frequency

作　　者：肖鲲[1] 王莉娜[1] 裴晓宇[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《电机与控制学报》2011年第2期26-31,共6页Electric Machines and Control

基　　金：国家自然科学基金(50807002);航空科学基金(2008ZC51045);北京市科技新星计划(2008B13)

摘　　要：针对双级矩阵变换器(TSMC)应用于航空领域时,在中频下如果直接应用传统调制策略,整流级相位将出现滞后,从而附加滞后的功率角且减小电压传输比,在变频航空供电体制下甚至出现功率角和输出电压幅值的波动,影响输入输出波形质量这一问题,在分析中频下整流级相位滞后原因的基础上,根据梯形面积原理推出滞后相位大小,提出中频下TSMC整流级的相位前馈校正算法。在实验样机上基于查表法实现该算法,保证控制器运算的实时性。仿真和实验结果表明,所提的相位前馈校正算法能够补偿滞后的相位,基于查表法的算法实现能够满足硬件实时性要求。Two-stage matrix converter（TSMC） is highly competent in aeronautic applications.However,the phase of rectification stage of TSMC delays while the conventional modulation strategy is directly applied at medium frequency input.Thus reactive power factor changes and voltage ratio decreases.Moreover,both of their values fluctuate under variable frequency input.In this article,the reason of phase delay of rectification stage of TSMC was analyzed,and the value of phase delay was calculated based on trapezoid area.Feedforward correction algorithm was then proposed to compensate the phase delay,which was implemented based on look-up table method to increase the operation efficiency.Simulation and experiment results show that,phase delay of rectification stage of TSMC at medium frequency is compensated with the proposed feedforward correction algorithm,and the look-up table implementation meets the requirement of operation efficiency.

关 键 词：电力变换器 双级矩阵变换器 前馈校正 中频 相位滞后 

分 类 号：TM46[电气工程—电器]