逆变器主回路直流电压的预测估计算法  

Computing the DC Voltage of Main Inverter Electrocircuit with Arithmetic of Prediction and Estimation

作　　者：张红玲[1] 侯静[2] 张继光[2] 

机构地区：[1]解放军第451医院经管科,陕西西安710054 [2]西北工业大学电子信息学院,陕西西安710071

出　　处：《现代电子技术》2007年第22期191-192,194,共3页Modern Electronics Technique

摘　　要：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的方法,使得主回路直流电压的变化可以根据当前值及负载变化情况精确预测,解决了无电压/电流闭环驱动系统中当升频、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系数的改变而准确变化,从而提高了电机的运行效率,也节省了硬件开销,具有较大的实用价值。This paper presents a Kalman filtering method for predicting and estimating the DC voltage of the main inverter electrocircuit,making the changes of main circuit＇s DC voltage can be predicted accurately according to the current value and the load changes and resolving the problem that the output voltage of the close - loop drive system without voltage or current couldn＇t be stabilized when raising or detracting the frequency. And then the output voltage can be changed precisely according to the changes of M （modulation）. Thereby,the hardware is decreased and the efficiency is improved, so this method has a greater practical value.

关 键 词：预测估计 逆变器 KALMAN滤波 变频 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]