摘要
研究了一种三电平半桥逆变器,其开关管的应力减小了50%,同时也减小了输出滤波器的体积。该逆变器采用了单极性SPWM控制方案,建立了其双环控制的数学模型,并分析了系统的稳定性。针对初始参数的选取给出了相应的公式,最后给出了实验结果。结果表明,逆变器很好地实现了三电平工作。
In this paper the operation principle of three-levels half bridge inverter based on Single-pole Sinusoidal Pulse Width Modulation （SSPWM） control mode is presented,the mai. advantages of the inverter are as follows：the voltage stress of all switches is ensured to be only the half of the primary voltage,the output fiher bulk could be significantly reduced,the voltage-current double closed loop math model is established and the stability of the inverter is analyzed.The inaccuracy of parameter selection of current adjustor would induce the question of multi-intersection and the instability of system, thus the formula of preliminary parameter selection is given.The experimental result indicated that inverter realized three-levels successfully.
出处
《电力电子技术》
CSCD
北大核心
2006年第3期29-30,共2页
Power Electronics
