By Topic

Design of discontinuous switching sequences in the case of grid-connected three-level voltage-source converter

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Lauttamus, P. ; Dept. of Electr. Energy Eng., Tampere Univ. of Technol., Tampere, Finland ; Tuusa, H.

The paper studies discontinuous space-vector modulation and switching sequence design in the case of grid-connected three-level neutral-point-clamped voltage-source converter operating with low switching frequency. Discontinuous pulse-width modulation (DPWM) methods of two-level modulation theory are used in three-level modulation and the effect of discontinuous switching sequence design on the switching waveforms is examined. A simple method is presented to design and arrange the discontinuous switching sequences such that switching waveform symmetry is retained during the transitions between the subsectors of the space-vector diagram. It is demonstrated with hardware-in-the-loop simulations that the loss of switching waveform symmetry results in the distortion of grid current. The results show that with the help of the method proposed the switching sequences can be arranged so that switching waveform symmetry is retained.

Published in:

Power Electronics Conference (IPEC), 2010 International

Date of Conference:

21-24 June 2010