Study on Chaotic Control of SPWM Inverter and Its Optimization

摘要

H bridge inverter is a basic topology in power electronic circuits. But it is tendentious to generate fast-scale instability phenomena due to the variation of some parameters in the working process of the circuit. Slope compensation is a simple and effective method to improve the circuit stability. In actual engineering design, experience plays the leading role and it lacks necessary design criteria. So this paper gives analyses for applying the slope compensation on an H bridge inverter under peak current mode control. Subsequently the demanded slope or amplitude of the compensated slope signal are concluded and optimized for assuring the stable operation of the circuit. The results of the analysis and numerous simulation experiments are consistent. The relative method is also applicable for the stability analysis and design of other power electronic circuits.