NDLI: Harmonics mitigation of dead time effects in PWM converters using a repetitive controller

Content Provider	IEEE Xplore Digital Library
Author	Yongheng Yang Keliang Zhou Huai Wang Blaabjerg, F.
Copyright Year	2015
Description	Author affiliation: Dept. of Energy Technol., Aalborg Univ., Aalborg, Denmark (Yongheng Yang; Huai Wang; Blaabjerg, F.) \|\| Sch. of Eng., Univ. of Glasgow, Glasgow, UK (Keliang Zhou)
Abstract	In order to prevent the power switching devices (e.g., the Insulated-Gate-Bipolar-Transistor, IGBT) from shoot-through in voltage source converter during a switching period, a dead time is added either in the hardware drivers of the IGBTs or implemented in the software Pulse-Width Modulation (PWM) scheme. Both methods will lead to a degradation of the injected current power quality. Thus, the harmonics induced by the dead time have to be compensated in order to achieve a satisfactory current as required by the standards. In this paper, a repetitive controller has been introduced to eliminate the dead-time effect in grid-connected PWM converters. The repetitive controller has been plugged into a proportional resonant based fundamental controller. Compared with the traditional dead-time compensation solutions, the repetitive controller can effectively compensate the dead-time harmonics as well as other low-order distortions, and also it is a simple method without hardware modifications. Experimental results are demonstrating the advantages of the proposed dead-time effect mitigation method compared to the resonant based harmonic compensator.
Starting Page	1479
Ending Page	1486
File Size	1143904
Page Count	8
File Format	PDF
ISBN	9781479967353
DOI	10.1109/APEC.2015.7104543
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-03-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Harmonic analysis Inverters Pulse width modulation Switches Power harmonic filters Harmonic distortion Resonant frequency
Content Type	Text
Resource Type	Article

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