Fault Diagnosis and Fault-Tolerant Control of DC-link Voltage Sensor for Two-stage Three-Phase Grid-Connected PV Inverters

被引：5
|
作者：
Kim, Gwang-Seob [1 ]
Lee, Kyo-Beum [1 ]
Lee, Dong-Choon [2 ]
Kim, Jang-Mok [3 ]
机构：
[1] Ajou Univ, Dept Elect & Comp Engn, Suwon 441749, South Korea
[2] Yeungnam Univ, Dept Elect Engn, Taegu, South Korea
[3] Pusan Natl Univ, Dept Elect Engn, Pusan, South Korea
来源：
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY | 2013年 / 8卷 / 04期
关键词：
Fault diagnosis; Fault-tolerant control; Grid-connected inverter; Sensorless control; PV inverters; Deadbeat control; WIND TURBINE; GENERATION SYSTEMS; MPPT CONTROL;
D O I：
10.5370/JEET.2013.8.4.752
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper proposes a method for fault diagnosis and fault-tolerant control of DC-link voltage sensor for two-stage three-phase grid-connected PV inverters. Generally, the front-end DC-DC boost converter tracks the maximum power point (MPP) of PV array and the rear-end DC-AC inverter is used to generate a sinusoidal output current and keep the DC-link voltage constant. In this system, a sensor is essential for power conversion. A sensor fault is detected when there is an error between the sensed and estimated values, which are obtained from a DC-link voltage sensorless algorithm. Fault-tolerant control is achieved by using the estimated values. A deadbeat current controller is used to meet the dynamic characteristic of the proposed algorithm. The proposed algorithm is validated by simulation and experiment results.
引用
收藏
页码：752 / 759
页数：8
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