DocumentCode :
54471
Title :
Multirate Repetitive Control for PWM DC/AC Converters
Author :
Bin Zhang ; Keliang Zhou ; Danwei Wang
Author_Institution :
Dept. of Electr. Eng., Univ. of South Carolina, Columbia, SC, USA
Volume :
61
Issue :
6
fYear :
2014
fDate :
Jun-14
Firstpage :
2883
Lastpage :
2890
Abstract :
In this paper, a multirate repetitive control (RC) scheme is developed and applied to constant-voltage constant-frequency pulsewidth modulation converter systems. In this scheme, the converter has a fast sampling rate, while the repetitive controller has a reduced sampling rate. The learning is based on the downsampled input and error signals in previous periods. The multirate RC synthesis method, as well as its convergence and stability conditions, is discussed in detail. Systematic experiments are also carried out to illustrate the effectiveness of multirate RC. Experimental results show that, with a well-designed multirate RC, the total harmonic distortion can be very low. This approach can reduce the computation delay caused by the plug-in RC in each switching control period and will enhance the system stability. Consequently, the switching control frequency of the converter can be increased to compensate the control performance loss. This approach is suitable for design of cost-effective and flexible converter control systems.
Keywords :
DC-AC power convertors; PWM power convertors; compensation; control system synthesis; convergence; harmonic distortion; learning systems; losses; machine control; signal sampling; stability; time-varying systems; PWM DC-AC converter; constant voltage constant frequency PWM convertor; control performance loss compensation; convergence; error signal; learning; multirate RC synthesis method; multirate repetitive controller design; plug-in RC; pulsewidth modulation; sampling rate reduction; stability condition; switching control frequency; switching control period; total harmonic distortion; Closed loop systems; Equations; Frequency control; Frequency conversion; Pulse width modulation; Transfer functions; Constant-voltage constant-frequency (CVCF) pulsewidth-modulation (PWM) converter; multirate repetitive control (RC); total harmonic distortion (THD);
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2013.2274423
Filename :
6566057
Link To Document :
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