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Improved Phase and Harmonic Detection Scheme using Fast Fourier Transform with Minimum Sampling Data under Distorted Grid Voltage
최소 샘플링의 고속푸리에 변환을 이용한 비정상 계통의 향상된 위상추종 및 고조파 검출 기법
2015
The Transactions of the Korean Institute of Power Electronics
최소 샘플링의 고속푸리에 변환을 이용한 비정상 계통의 향상된 위상추종 및 고조파 검출 기법
In distributed generation systems, a grid-connected inverter should operate with synchronization to grid voltage. Considering that synchronization requires the phase angle of grid voltage, a phase locked loop (PLL) scheme is often used. The synchronous reference frame phase locked loop (SRF-PLL) is generally known to provide reasonable performance under ideal grid voltage. However, this scheme indicates performance degradation under the harmonic distorted or unbalanced grid voltage condition.
doi:10.6113/tkpe.2015.20.1.72
fatcat:poeo7np3x5erjkxm2hbvhiwf3u