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An Enhanced Model-Free Predictive Control to Eliminate Stagnant Current Variation Update for PWM Rectifiers

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Abstract
In model-free predictive control (MFPC), high active power spikes and grid current notches are induced when applied to pulsewidth modulation (PWM) rectifiers. To overcome these problems, we develop an enhanced MFPC to eliminate the stagnant current variation update for PWM rectifiers. In the proposed MFPC, only four variables are estimated to remove the stagnant current variation update, and the grid current variations are obtained directly from these four estimated variables. Therefore, there is no need to identify any voltage vector combination, and a lookup table to store grid current variations is not needed in contrast to the previous method. Thanks to the elimination of the stagnant current variation update, the prediction accuracy of the proposed MFPC is significantly improved without complexity compared with that of the conventional MFPC. As a result, the active power spikes and grid current notches are eliminated with the proposed MFPC. Both simulation and experiment are implemented to verify the effectiveness of the proposed MFPC.
Author(s)
레 반 띠엔이홍희
Issued Date
2021
Type
Article
Keyword
Current measurementModel-free predictive control (MFPC)Predictive modelsPulse width modulationpulsewidth modulation (PWM) rectifiersRectifiersstagnant current variation updateSwitchesTable lookupVoltage measurement
DOI
10.1109/JESTPE.2021.3058737
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9025
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_ieee_primary_9352792&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,An%20Enhanced%20Model-Free%20Predictive%20Control%20to%20Eliminate%20Stagnant%20Current%20Variation%20Update%20for%20PWM%20Rectifiers&offset=0&pcAvailability=true
Publisher
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
Location
미국
Language
영어
ISSN
2168-6777
Citation Volume
9
Citation Number
6
Citation Start Page
6804
Citation End Page
6816
Appears in Collections:
Engineering > Electrical engineering
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