NDLI: Dual updating SVPWM-based circulating current control method for parallel three-phase inverters

Content Provider	IEEE Xplore Digital Library
Author	Zhang Xueguang Chen Jiaming Zhang Wenjie Xu Dianguo
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. Eng., Harbin Inst. of Technol., Harbin, China (Zhang Xueguang; Chen Jiaming; Zhang Wenjie; Xu Dianguo)
Abstract	Parallel three-phase inverters structure has become a popular way to increase capacity. However, circulating current will be produced. In practical application, inverters are controlled by digital system. Consequently, it is inevitable to consume time due to sampling and computing. As a result, the performance of zero-axis current loop would be directly affected. This paper presents a dual updating SVPWM-based method to control the circulating current exhibited in parallel three phase PWM inverters. With the employment of PI controller, better circulating current suppression performance can be achieved by means of the proposed method because of the realized dual sampling and dual PWM duty ratios updating (DSDU) in a carrier period, which results in dual updating of the circulating current control variable in a PWM period with switching frequency unchanged nor extra hardware added. By comparing the performance with the traditional SSSU method, the effectiveness of the proposed method is validated with implementation using TMS3202812 digital signal processor.
Sponsorship	IEEE Ind. Electron. Soc.
Starting Page	659
Ending Page	664
File Size	323323
Page Count	6
File Format	PDF
ISBN	9781479902248
ISSN	1553572X
DOI	10.1109/IECON.2013.6699213
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-10
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inverters Current control Process control Vectors Timing Space vector pulse width modulation duty ratio update parallel operation three-phase inverters circulating current SVPWM
Content Type	Text
Resource Type	Article

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