Sensorless Voltage Observer for a Current-Fed High Step-Up DC-DC Converter Using Extended Kalman Filter

被引：2
作者：
Haadi, Karim [1 ]
Rajaei, Amirhossein [1 ]
Shahparasti, Mahdi [2 ]
Rahideh, Akbar [1 ]
机构：
[1] Shiraz Univ Technol, Dept Elect & Elect Engn, Shiraz 7155713876, Iran
[2] Univ Southern Denmark, Elect Engn Sect, Dept Mech & Elect, DK-5230 Odense, Denmark
来源：
ELECTRONICS | 2020年 / 9卷 / 12期
关键词：
high step-up DC-DC converter; sensorless voltage observer; extended Kalman filter; MODEL-PREDICTIVE CONTROL; SPEED CONTROL; EKF; SUPPLIES;
D O I：
10.3390/electronics9122066
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In high voltage applications, sensorless voltage control techniques can reduce the cost and increase the reliability of DC-DC converters. In this paper, a sensorless voltage observer for a current fed Cockcroft-Walton voltage multiplier is designed. The first step is to derive the converter model. Since any inaccuracy in the derived model can result in a discrepancy between the observed voltage and the actual output voltage, an accurate model is derived, which incorporates the influential elements. Then, two voltage observers based on the extended Kalman filter (EKF) are designed and used to estimate the output voltage, transformer magnetizing current and inductor current for two different configurations of the high step-up DC-DC converter. Experimental and simulation results of the system show the efficiency of the observers. The proposed observers represent good precision as the main parasitic parameters are considered in the converter model.
引用
收藏
页码：1 / 17
页数：17
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