Reliability and Performance Improvement of PUC Converter Using a New Single-Carrier Sensor-Less PWM Method with Pseudo Reference Functions

Authors

Mostafa Abarzadeh, Marquette University
Saeed Peyghami, Aalborg University
Kamal Al-Haddad, Ecole de Technologie Superieure
Nathan Weise, Marquette UniversityFollow
Liuchen Chang, University of New BrunswickFollow
Frede Blaabjerg, Aalborg University

Document Type

Article

Publication Date

5-2021

Publisher

Institute of Electrical and Electronics Engineers

Source Publication

IEEE Transactions on Power Electronics

Source ISSN

0885-8993

Abstract

A new single-carrier sensor-less pulsewidth modulation (PWM) method using suggested pseudo reference functions is proposed for packed U-cell (PUC) converter to improve performance and reliability of the PUC converter. It is composed of one PWM carrier signal and two suggested pseudo reference functions. By employing the proposed modulation method, the PUC dc capacitor voltage ripple is substantially decreased, and faster sensor-less capacitor voltage balancing is obtained. Moreover, the power losses are evenly distributed among all power switches. Consequently, notable reduction of the PUC dc capacitor voltage ripple and even distribution of the power loss among switches enhance the PUC converter's reliability and lifetime. In addition, odd multiples of the switching harmonic clusters are eliminated from the output voltage; thus, the values of output passive filter components are halved. Hence, applying the proposed single-carrier sensor-less PWM method remarkably improves the performance, power density, reliability, and lifetime of the PUC converter and notably simplifies implementation of the switching pattern. Provided experimental results and comparisons as well as reliability analysis verify the viability and effectiveness of the proposed PWM method.

Comments

Accepted version. IEEE Transactions on Power Electronics, Vol. 36, No. 5 (May 2021): 6092-6105. DOI. © 2021 Institute of Electrical and Electronics Engineers. Used with permission.

Recommended Citation

Abarzadeh, Mostafa; Peyghami, Saeed; Al-Haddad, Kamal; Weise, Nathan; Chang, Liuchen; and Blaabjerg, Frede, "Reliability and Performance Improvement of PUC Converter Using a New Single-Carrier Sensor-Less PWM Method with Pseudo Reference Functions" (2021). Electrical and Computer Engineering Faculty Research and Publications. 681.
https://epublications.marquette.edu/electric_fac/681