物理学报Issue(21)：36-42,7.DOI:10.7498/aps.62.210502
单相H桥逆变器单极性正弦脉宽调制下的分岔及混沌行为研究
Study on bifurcation and chaos in single-phase H-bridge inverter modulated by unipolar sinusoidal pulse width modulation
摘要
Abstract
The unipolar SPWM has been widely used in H-bridge inverter because of its superiority for lower switching loss and less electromagnetic interference as compared with bipolar SPWM. However, the nonlinear phenomena in it have not been reported. In this paper, the bifurcation and chaos in the H-bridge inverter modulated by unipolar SPWM is studied. The one-dimensional discrete iterated mapping model under proportional control is established. Effects of the proportional coefficient k on the system performance are analyzed by using bifurcation diagram, folded diagram, and Lyapunov index spectrum. The time-domain waveforms with different proportional coefficients are obtained by Matlab/Simulink, which verify the correctness of theoretical analysis. Finally, the nonlinear behavior in the inverter caused by the variation of other circuit parameters like input voltage E , load resistance R, and inductance L is investigated through bifurcation diagrams. This paper turns the chaotic research of single-phase H-bridge inverter from bipolar SPWM to unipolar SPWM, So that the proposed approach is more practical. The results have important guiding significance and application value for designing and debugging the single-phase H-bridge inverter correctly.关键词
单相H桥逆变器/单极性调制/离散迭代映射/分岔和混沌Key words
single-phase H-bridge inverter/unipolar modulation/discrete iterated mapping/bifurcation and chaos引用本文复制引用
刘洪臣,杨爽..单相H桥逆变器单极性正弦脉宽调制下的分岔及混沌行为研究[J].物理学报,2013,(21):36-42,7.基金项目
国家自然科学基金(批准号:51107016)、国家重点基础研究发展计划项目(973计划)(批准号:2013CB035605)和黑龙江省博士后科研启动金(批准号:LHB-Q12086)资助的课题.@@@@Project supported by the National Natural Science Foundation of China (Grant No.51107016), the National Key Basic Research Program of China (Grant No.2013CB035605), and the Postdoctoral Science-Research Developmental Foundation of Heilongjiang province, China (Grant No. LHB-Q12086) （批准号:51107016）
