A Generic PWM Scheme Be Used for CSC

Abstract:

In order to overcome the drawbacks of the conventional SPWM for three-phase CSC, this paper presents a generic novel PWM scheme. In the novel PWM scheme, one line cycle is divided into six 60° intervals, and during each interval, only two references are used to compare with the carriers to directly generate the required switching patterns. Because of the optional modulation signal, the modulation technique has the advantages of flexible and easy digital implementation. It is shown that, compared with the conventional SPWM, the novel PWM scheme has lower switching frequency, higher dc current utilization ratio and in-phase transfer between the three-phase line currents and the reference signals. Finally, the propositions are verified by the experimental results.

• Periodical: Advanced Materials Research (Volumes 614-615)
• Pages: 1519-1523
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.614-615.1519
• Online since: December 2012
• Authors: Tai Bin Cao, Man Lin Chen
• Keywords: Current Source Converter (CSC), DC Current Utilization Ratio, Pulse Width Modulation (PWM)

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