A centroid-based PWM switching technique for full-bridge inverter applications

Author

Yazdian-Varjani, Ali ; Perera, Sarath ; Chicharo, Joe F.

Author_Institution

Dept. of Electr. & Comput. Eng., Wollongong Univ., NSW, Australia

Volume

13

Issue

1

fYear

1998

fDate

1/1/1998 12:00:00 AM

Firstpage

115

Lastpage

124

Abstract

A novel centroid-based pulse-width-modulation (PWM) switching strategy is proposed which is suitable for full-bridge inverter applications. This method is evaluated, and its performance is compared with existing PWM switching strategies. The performance evaluation and comparison are based on the total harmonic distortion (THD) and number of pulses per cycle of the inverter output waveform. The objective of the new switching strategy is to minimize both the THD and low-order harmonics. Simulation results show that this technique yields a significant improvement in performance. In addition, a hybrid switching sequence is developed for the proposed scheme, which can lead to further reduction in switching losses

Keywords

PWM invertors; bridge circuits; harmonic distortion; losses; power system harmonics; switching circuits; THD; centroid-based PWM switching technique; full-bridge inverter applications; hybrid switching sequence; inverter output waveform; low-order harmonics; switching losses reduction; switching strategy; total harmonic distortion; Equations; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Sampling methods; Space vector pulse width modulation; Switching frequency; Switching loss; Total harmonic distortion; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.654965

Filename

654965