Instability analysis and experimental setup of a full-bridge SPWM DC-AC converter

The nonlinear phenomena of the full-bridge DC/AC converter have been reported enormously as the parameters of the converter vary. This paper studies the stability of the full-bridge converter due to Sinusoidal Pulse Width Modulation (SPWM) process. Modulation index is one of the important indicators of the modulation process which affects the operation mode of SPWM converter directly. The evolution from stable state to chaos via double-period bifurcation is exhibited through bifurcation diagram and time-domain waveform. Meanwhile, it points out the mutation of modulation index with the variation of the proportional gain of the controller and the dc input voltage of the converter, respectively. Furthermore, it analyses the influence of the modulation index on the stability of the full-bridge converter. The region of proportional gain of the controller and dc input voltage in which the converter appears stable is obtained. The experimental results based on TMS320F2812 DSP chip are also provided to confirm the simulated bifurcation and chaos phenomena.

[1]  Uma Govindarajan,et al.  Period-bubbling and mode-locking instabilities in a full-bridge DC-AC buck inverter , 2013 .

[2]  Herbert Ho-Ching Iu,et al.  Control of chaos in a PWM current-mode H-bridge inverter using time-delayed feedback , 2003 .

[3]  Qu Ying,et al.  STUDY ON THE EXPERIMENT AND THE PRECISE DISCRETE MODEL OF BIFURCATION AND CHAOS FOR BUCK DC/DC CONVERTER , 2003 .

[4]  Marta Molinas,et al.  Discrete-Time Tool for Stability Analysis of DC Power Electronics-Based Cascaded Systems , 2017, IEEE Transactions on Power Electronics.

[5]  B. G. M. Robert.  On electronic saturation influence on chaos in a PWM inverter , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[6]  D. C. Hamill,et al.  Instability, subharmonics and chaos in power electronic systems , 1989 .

[7]  Zhang Guoshan,et al.  Chaos control in the Buck converter by using active disturbance rejection control technique , 2015, The 27th Chinese Control and Decision Conference (2015 CCDC).

[8]  David C. Hamill,et al.  Subharmonics and chaos in a controlled switched-mode power converter , 1988 .

[9]  B. G. M. Robert,et al.  Border collision bifurcations in a one-dimensional piecewise smooth map for a PWM current-programmed H-bridge inverter , 2002 .

[10]  Xinbo Ruan,et al.  Bifurcation Analysis and Experimental Study of a Multi-Operating-Mode Photovoltaic-Battery Hybrid Power System , 2015, IEEE Journal on Emerging and Selected Topics in Circuits and Systems.

[11]  Dai Dong,et al.  Border collision bifurcations and chaos in a class of piecewise smooth systems w ith two boundaries , 2003 .

[12]  Parvathyshankar Deivasundari,et al.  Chaotic dynamics of a zero average dynamics controlled DC-DC Cuk converter , 2014 .

[13]  Zhang Bo,et al.  The fast- and slow-scale stabilities and chaotic motion of H-bridge sine inverter , 2009 .

[14]  杨旭,et al.  Bifurcation and chaos in sliding mode controlled first-order h-bridge inverter based on pulse width modulation , 2013 .

[15]  Zhang Bo.  Mechanism of Border-collision Bifurcations and Chaos in H-bridge Direct Current Chopper , 2009 .

[16]  H.H.C. Iu,et al.  Hopf bifurcation and chaos in a free-running current-controlled Cuk switching regulator , 2000 .