Saleh S., Jee A., Meng J., Özkop E., Ahshan R., Nahid Mobarakeh B., ...Daha Fazla
2024 IEEE Industry Applications Society Annual Meeting (IAS), Arizona, Amerika Birleşik Devletleri, 20 - 24 Ekim 2024, ss.1-9, (Tam Metin Bildiri)
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Yayın Türü:
Bildiri / Tam Metin Bildiri
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Doi Numarası:
10.1109/ias55788.2024.11023657
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Basıldığı Şehir:
Arizona
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Basıldığı Ülke:
Amerika Birleşik Devletleri
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Sayfa Sayıları:
ss.1-9
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Karadeniz Teknik Üniversitesi Adresli:
Evet
Özet
Variable frequency drives (VFDs), including permanent magnet synchronous motor (PMSM) VFDs, have to be grounded in order to improve their operation and protection. In PMSM-VFDs, an adequate grounding can help in reducing common-mode voltages (CMVs), improving personnel safety, and limiting ground fault currents. Several standards and industrial codes have addressed the adequate grounding systems for VFDs, including PMSM-VFDs. This paper presents the design and performance assessment of the new frequency-selective grounding (FSG), when utilized in a PMSM-VFD. The design of the FSG is based on a parallel R−C circuit, which behaves as a very low impedance for high frequency voltages and a low-resistance for low frequency voltages. Such functions of the FSG can significantly reduce common-mode voltages (CMVs) in PMSMVFDs, thus minimizing their adverse impacts on the drive and its components. The performance of the proposed FSG in PMSMVFDs is experimentally tested using a 5hp,3ϕ PMSM-VFD for different operating conditions. Experimental test results discussed and presented in this paper demonstrate the significant reductions in CMVs, along with negligible sensitivity to the operating speed and/or loading level of the PMSM-VFD.