NDLI: Analysis and compensation of dead-time effect in direct matrix converter

Content Provider	IEEE Xplore Digital Library
Author	Chengzhu Piao Hung, J.Y.
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. &, Auburn Univ. Auburn, Auburn, AL, USA (Chengzhu Piao; Hung, J.Y.)
Abstract	This study describes a detailed analysis and compensation of dead-time effect in direct matrix converter. To prevent a short circuit in the power supply, a switching delay time is needed to insert into pulse width modulation (PWM) signals. Due to the dead time, the waveform of output current emerges distortion and increases total harmonic distortion (THD). Dead time compensation is necessary to optimize current distortion and reduce THD. Through analysis of dead time effect, deviations of voltage vectors caused by dead time effect are dependent on the direction of output currents. The voltage distortion increases harmonic components of output voltage and decreases control performance. Combined with the characteristics of carrier-based modulation method, in order to avoid determining the direction of output currents, a compensation method for dead time effect is suggested. The value of dead time is adjusted on-line by the value of corresponding phase current. The deviation of voltage vectors caused by dead time effect is directly compensated to three phase reference voltages. This dead time compensation method is suitable to matrix converter. Simulation results indicate that the proposed scheme can effectively improve the sinusoidal waveform and phase offset of the output current. The algorithm is simple to understand and easy to digital realization.
Starting Page	90
Ending Page	95
File Size	1001735
Page Count	6
File Format	PDF
e-ISBN	9781479918027
DOI	10.1109/SusTech.2015.7314328
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dead-time effect Carrier-based modulation Switches Dead time compensation Pulse width modulation Inverters Yttrium Direct matrix converter Matrix converters Voltage control
Content Type	Text
Resource Type	Article

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