Competitive study on reliability of difference voltage levels of NPC multilevel inverters

Competitive study on reliability of difference voltage levels of NPC multilevel inverters

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

The issue of reliability in power electronic converters (PECs) has received comparatively less attention by researchers. Among PECs, the multilevel inverter is a favourite choice of industry in the area of medium-voltage and high-power uses. To study the reliability of PECs, first, the failure rates of elements such as diodes, capacitors, and switches are introduced based on a relevant standard. Then, the reliability indices of two converters, 3-level and 5-level neutral point clamped, are calculated and compared. The results of the reliability study indicate an appropriate converter for sensitive application in industry.


    1. 1)
      • 1. Billinton, R., Allan R, N.: ‘Reliability evaluation of engineering systems’ (Springer, New York, NY, USA, 1992).
    2. 2)
    3. 3)
      • 3. Pilehvar, M.S., Mardaneh, M., Rajaei, A.: ‘Formulation of phase voltage and calculation of its total harmonic distortion in multilevel Z-source inverter’, Power Electron., 2015, 8, (8), pp. 15091518, doi: 10.1049/iet-pel.2014.0512.
    4. 4)
    5. 5)
      • 5. Uthirasamy, R., Ragupathy, U.S., Kumar Chinnaiyan, V.: ‘Structure of boost DC-link cascaded multilevel inverter for uninterrupted power supply applications’, Power Electron., 2015, 8, (11), pp. 20852096, doi: 10.1049/iet-pel.2014.0746.
    6. 6)
    7. 7)
    8. 8)
    9. 9)
      • 9. Reliability prediction of electronic equipment’, Report MIL-HDBK-217, Relex Software Corporation, Greensburg, PA, 1990.

Related content

This is a required field
Please enter a valid email address