Study of Harmonic Detection Methods under Non-Ideal Conditions in Ship Power Network

• Main Authors: Xu Xiao-Yan, Mindykowski Janusz, Tarasiuk Tomasz, Cheng Chen
• Format: Article
• Language: English
• Published: Sciendo 2015-09-01
• Series: Polish Maritime Research
• Subjects: distorted three-phase voltage; rapid-variation load; harmonic detection; average arithmetic
• Online Access: https://doi.org/10.1515/pomr-2015-0060

An improved harmonic detection method based on average arithmetic is proposed. According to the research results, the designed solution uses an LPF (low-pass-filter) and a mean value module connected in series instead of the conventional mean value module, and simultaneously, a three-phase voltage phase-locked module instead of commonly used PLL (phase lock loop) module is applied in order to reduce the influence caused by three-phase distorted voltage and rapid variation of load. The experimental results show that the application of this solution leads to increase in the accuracy of harmonics detection for distorted three-phase voltage and rapid variation of load.