Ground Leakage Current Caused by Common-Mode Voltage of PWM inverter

Authors

  • Jerzy Ryszard Szymański Kazimierz Pulaski University of Technology and Humanities in Radom
  • Marta Żurek-Mortka Kazimierz Pulaski University of Technology and Humanities in Radom

DOI:

https://doi.org/10.24136/tren.2019.002

Keywords:

common-mode voltage, differential-mode voltage, PWM modulation, three-phase traction voltage inverter, two-level PWM inverter

Abstract

In railway tractive vehicles, three-phase PWM (Pulse Width Modulation) inverters generate parasitic Differential-Mode Voltages (DMV) and Common-Mode Voltages (CMV). Parasitic voltages are a side effect of using the width modulation to shape the phase-to-phase inverter?s voltage. In this article, the authors present a mathematical description of the DM and CM voltages and carry out their spectral analysis. Based on the spectral harmonics analysis, the authors present a method for filtration of harmonics of DM and CM voltages aimed at limiting the capacitance parasitic currents: due to DM voltage ? phase-to-phase parasitic current and CM voltage ? ground parasitic currents. As the final result of the tests, almost complete elimination of leakage parasitic current form PE shock protection system was achieved.

References

Ambrožič, V., Zajec P. (2016) Električni Servo Pogoni, Slovensko združenje elektroenergetikov CIGRE-CIRED, Ljubljana

Suwankawin S. et al. (2005) Destruction by Charge Current and Its Solution for PWM Inverter Feeding Multiple Motors Through Long Cables. Industry Applications Conference, 2005. Fourtieth IAS Annual Meeting. Conference Record of the 2005

Tallam R. et al. (2006) Failure Mode for AC Drives on High Resistance Grounded System, Applied Power Electronics Conference and Exposition, APEC '06

Yeh Ch., Huang B., Chen K., Fang R., Wang Ch. (2015) Reduction of Common-Mode and Differential-Mode Noises Using Timing-Offset Differential Signal, IEEE Transactions on Components, Packaging And Manufacturing Technology, Vol. 5, No. 12, December 2015

Dianguo X., Qiang G., Wei W. (2006) Design of a Passive Filter to Reduce Common-Mode and Differential-Mode Voltage Generated by Voltage-Source PWM Inverter, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics

Sokmen O.G., Alci M. (2018) A Novel Active Element: Fully Differential Voltage Differencing Current Controlled Current Conveyor (FD-VDCCC) and Filter Applications, 5th International Conference on Electrical and Electronics Engineering

Huang J., Shi H. (2015) A Hybrid Filter for the Suppression of Common-Mode Voltage and Differential-Mode Harmonics in Three-Phase Inverters With CPPM, IEEE Transactions on Industrial Electronics Volume 62, Issue 7, July 2015

Hassan M. S., Shoyama M. (2018) Common-Mode Noise Evaluation Study of Two-Level Voltage Source Inverter using Bus-Clamping Discontinuous PWM Strategies, 2018 IEEE International Telecommunications Energy Conference (INTELEC)

Pairodamonchai P., Sangwongwanich S. (2011) Exact Common-Mode and Differential-Mode Equivalent Circuits of Inverters in Motor Drive Systems Taking into Account Input Rectifiers, IEEE PEDS 2011, Singapore, 5 - 8 December 2011

Li X., Zhang Ch., Chen A., Qin Ch. (2019) Simultaneous Common-Mode Resonance Circulating Current and Leakage Current Suppression for Transformerless Three-Level T-Type PV Inverter System, IEEE Transactions on Industrial Electronics, Vol. 66, No. 6, June 2019

Danfoss: Output Filter Design MG90N402, 2010

Żurek-Mortka M., Szymański J. (2018) Reactive Power Compensation in a Harmonic Environment, Elektro Info, nr 10

Kempski A., Smoleński R. (2006) Decomposition of EMI Noise Into Common and Directional Modes in PWM Inverter Drive System. Electrical Power Quality and Utilization, 12 (no. 1)

Szymański J. (2015) The Voltage of Common-Mode Disturbances in Frequency Converters in Railway Systems. Monography, UTH Radom

Szymański J. (2014) The Filter of Common-Mode Voltage of Electronic Frequency Converters Supplied From a Three-Phase, Ungrounded IT Type System. Patent PL No 219221

Holmes D., Lipo T. (2003) Pulse Width Modulation For Power Converters: Principles And Practice. Wiley - IEEE Press

Kempski A. (2005) Electromagnetic Conductive Disturbances in Converter Drive Systems. Monography, Oficyna Wydawnicza Uniwersytetu Zielonogórskiego

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Published

2020-01-31

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Articles