逆变器无互联线并联运行控制策略

A control strategy on parallel operation of inverters with wireless

文章在分析环流理论、PQ原理的基础上,提出了一种逆变器无互联线控制策略。要保证无互联线并联的性能关键在于调功的实现,这包括功率的获取和功率的调节。为准确计算出功率,先对功率基本理论进行分析,并得出相关计算公式。在功率的调节中,PQ的调节系数将直接影响调节的精度和动态响应,该文通过仿真论述了调节系数的取值问题。结果表明,该系统切换过程迅速,过渡过程平滑,具有极好的动态性能。

A control strategy on parallel inverters with wireless is presented based on circulating-current theory and the PQ principle. The key of the control strategy lies in its realization of power regulation as power calculation and regulation. To calculate the power exactly, power theory is fully analyzed and some relevant formulas of power calculation are achieved. The droop coefficients have direct influence on the improvement of the regulation precision and dynamic response. The paper expounds the choice of the value of the adjustable coefficients with simulation. The results show that the system switches rapidly, transforms smoothly and has a good dvnamic performance.