一种改进的电压电流混合控制的并联逆变器

Advanced voltage and current hybrid controlled parallel inverters

采用了电压模块、电流模块混合的并联逆变器系统。模块中增加了主逆变器仲裁电路,使得电压模块在出现故障时可以动态切换。电压控制环和电流控制环均采用滑模变结构控制,使得模块鲁棒性增强,对模块间的相互影响不敏感。实验结果验证,该方法提高了系统的稳定性,而且使负载平均分配,较好地实现了逆变器的并联。

The paper shows an advanced voltage and current hybrid controlled parallel inverters system. A circuit to determine the master unit is added to every unit, so a new master unit will replace the old one when it is in malfunction. By using variable structure control scheme, the paralled inverters can result in fast dynamic response and robustness to parameter variations. Finally, experiment results are performed to verfy the proposed control scheme. 