【摘要】 本文提出一种用Kalman滤波的方法对变频器主回路直流电压进行估计和预测 ,解决了无电压 电流闭环系统中当升频、降频时出现输出电压不稳的问题 ,使输出电压能严格按照调制度的改变而精确变化 ,提高了运行效率 ,节省了硬件开销。更多还原

【Abstract】 This paper presents a method of Kalman filter for predicting and estimating the DC value of the inverter main circuit,and resolves the problem that the output voltage of the system couldn’t be stabilized without the close\|loop when raising or lowering the frequency.The output voltage can be changed strictly according to the change of M(modulation),and at the same time,hardware is simplified and effciency is improved.更多还原