| Title |
Analysis of Flux Weakening Operating Regions for a PM Synchronous Motor in HEV by considering Back EMF Harmonics |
| Authors |
Kwan-Yuhl Cho ; 劉Byung-Guk Woo ; Gyoung-Man Kim ; Chan-Ho Kang ; 李Hee-Keun Shin |
| DOI |
10.6113/TKPE/2011.16.2.145 |
| Keywords |
PV PCS; Islanding; Active frequency drift method |
| Abstract |
In this paper, among the active islanding detection techniques, the modified active frequency drift method was analyzed, which is relatively easy to apply to the single-phase grid-connected PV PCS. The existing designs for turbulences in these applications were empirically conducted, and do not have sufficient reliability and performance. Therefore, three application forms of the modified active frequency drift technique were modeled, based on which the proper magnitude of turbulence, which is the frequency acceleration component, was calculated. Using the results, the magnitude of and injection method for turbulence for ensuring the islanding detection performance and improving the output power quality were proposed, and they were verified via simulations and experiment to prove that the reliable islanding detection technique can be developed merely by measuring the basic output power quality, without the need for expensive islanding simulation equipment. |