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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Asiminoaei, L. Teodorescu, R. Blaabjerg, F. Borup, U. |
| Copyright Year | 1982 |
| Abstract | New and stronger power quality requirements are issued due to the increased amount of photovoltaic (PV) installations. In this paper different methods are used for continuous grid monitoring in PV inverters. By injecting a noncharacteristic harmonic current and measuring the grid voltage response it is possible to evaluate the grid impedance directly by the PV inverter, providing a fast and low-cost implementation. This principle theoretically provides an accurate result of the grid impedance but when using it in the context of PV integration, different implementation issues strongly affect the quality of the results. This paper also presents a new impedance estimation method including typical implementation problems encountered, and it also presents adopted solutions for online grid impedance measurement. Practical tests on an existing PV inverter validate the chosen solution. |
| Sponsorship | IEEE Industrial Electronics Society |
| Starting Page | 1136 |
| Ending Page | 1144 |
| Page Count | 9 |
| File Size | 784822 |
| File Format | |
| ISSN | 02780046 |
| Volume Number | 52 |
| Issue Number | 4 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-08-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Testing Inverters Impedance measurement Photovoltaic systems Filters Solar power generation Monitoring Discrete Fourier transforms Power electronics Power quality power system monitoring Digital signal processors (DSPs) discrete Fourier transform (DFT) fixed-point arithmetic grid impedance measurement |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications |
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