Cart (Loading....) | Create Account
Close category search window
 

Simple control strategy for balancing the DC-link voltage of neutral-point-clamped inverter at low modulation index

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 $31
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

4 Author(s)
Kang, D.W. ; Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea ; Ma, C.S. ; Kim, T.J. ; Hyun, D.S.

A simple control strategy is proposed based on the discontinuous PWM (DPWM) to balance the DC-link voltage of three-level neutral-point-clamped (NPC) inverter at low modulation index. It introduces new DPWM methods and one of them is applied to balancing the DC-link voltage. The current flowing into the neutral point of DC-link capacitors causes the fluctuation of neutral point potential in the NPC inverter. The proposed DPWM method changes the path and duration time of the neutral point current, which makes the overall variation of it zero during the sampling time of the reference voltage vector. Therefore, using the proposed strategy, the neutral point potential of DC-link capacitors can be balanced fairly well and its ripple is also reduced significantly. Moreover, compared with conventional methods that have to perform the complicated calculations, the proposed strategy has been very simple. The proposed DPWM method has been verified by experiment.

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:151 ,  Issue: 5 )

Date of Publication:

9 Sept. 2004

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.