Ground Fault Detection Method for Variable Speed Drives

被引：16

作者：

Guerrero, Jose Manuel ^{[1
]}

Navarro, Gustavo ^{[2
]}

Mahtani, Kumar ^{[3
]}

Platero, Carlos ^{[3
]}

机构：

[1] Univ Politecn Madrid, ET SIME, Energy & Fuels Dept, Madrid 28003, Spain

[2] Minist Innovac Ciencia & Univ, CIEMAT, Spanish Publ Res Ctr Energy Environm & Technol, Madrid 28037, Spain

[3] Univ Politecn Madrid, ET SII, Automat Elect & Elect & Ind Comp Engn Dept, Madrid 28006, Spain

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2021年 / 57卷 / 03期

关键词：

Grounding; Resistors; Voltage measurement; Voltage control; Fault detection; Current measurement; Variable speed drives; AC– AC power conversion; electrical fault detection; fault currents; fault diagnosis; power system faults; COMPENSATION; PROTECTION;

D O I：

10.1109/TIA.2021.3064001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The use of variable speed drives made essential the presence of power electronic in electrical systems. The ac to dc and dc to ac conversions, thanks to rectifiers and inverters cause difficulties in the ground fault detection. In this article, a new method to detect ground faults in variable speed drives is presented. It is based on the analysis of the terminal voltage signal of a grounding resistor connected between the neutral at the secondary of the main power transformer and ground. Attending to the waveform, the ground fault can be detected on the ac grid side, dc positive or negative terminals, or ac inverter side. To verify the method, numerous simulations and experimental tests in a 140-kW power converter were carried out achieving satisfactory results.

引用

页码：2547 / 2558

页数：12

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