Neutral-Point Potential Balance Control Strategy on Three-Level Active Power Filters
This paper presents a simplified strategy in neutral-point (NP) potential balance of the neutral-point-clamped (NPC) three-level three-wire active power filter (APF). By introducing a simplified carrier-based pulse width modulation (CB-PWM) strategy and analysing the occurrence mechanism of NP poten...
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Hindawi Limited
2021-01-01
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Series: | Mathematical Problems in Engineering |
Online Access: | http://dx.doi.org/10.1155/2021/9930767 |
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doaj-c44e9e9d572b48e9b2257416fa5535642021-06-28T01:50:42ZengHindawi LimitedMathematical Problems in Engineering1563-51472021-01-01202110.1155/2021/9930767Neutral-Point Potential Balance Control Strategy on Three-Level Active Power FiltersFei Li0Na Geng1Guifeng Wang2Chunjie Li3Zhan Liu4Zhenglong Xia5School of Electrical Engineering and AutomationSchool of Electrical Engineering and AutomationSchool of Electrical Engineering and AutomationSchool of Electrical Engineering and AutomationSchool of Electrical Engineering and AutomationSchool of Electrical Engineering and AutomationThis paper presents a simplified strategy in neutral-point (NP) potential balance of the neutral-point-clamped (NPC) three-level three-wire active power filter (APF). By introducing a simplified carrier-based pulse width modulation (CB-PWM) strategy and analysing the occurrence mechanism of NP potential unbalance, we proposed a NP potential balancing control strategy based on the simplified strategy. With this strategy, the NP current in a sampling period can be calculated through the detection of compensating current of APF. The three phase’s duration time of reference voltage can also be computed through detecting the voltage fluctuation of upper and lower capacitors accurately, according to the law of charge conservation. Experiment results show that this proposed approach with simplified computation can effectively achieve NP potential balance.http://dx.doi.org/10.1155/2021/9930767 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fei Li Na Geng Guifeng Wang Chunjie Li Zhan Liu Zhenglong Xia |
spellingShingle |
Fei Li Na Geng Guifeng Wang Chunjie Li Zhan Liu Zhenglong Xia Neutral-Point Potential Balance Control Strategy on Three-Level Active Power Filters Mathematical Problems in Engineering |
author_facet |
Fei Li Na Geng Guifeng Wang Chunjie Li Zhan Liu Zhenglong Xia |
author_sort |
Fei Li |
title |
Neutral-Point Potential Balance Control Strategy on Three-Level Active Power Filters |
title_short |
Neutral-Point Potential Balance Control Strategy on Three-Level Active Power Filters |
title_full |
Neutral-Point Potential Balance Control Strategy on Three-Level Active Power Filters |
title_fullStr |
Neutral-Point Potential Balance Control Strategy on Three-Level Active Power Filters |
title_full_unstemmed |
Neutral-Point Potential Balance Control Strategy on Three-Level Active Power Filters |
title_sort |
neutral-point potential balance control strategy on three-level active power filters |
publisher |
Hindawi Limited |
series |
Mathematical Problems in Engineering |
issn |
1563-5147 |
publishDate |
2021-01-01 |
description |
This paper presents a simplified strategy in neutral-point (NP) potential balance of the neutral-point-clamped (NPC) three-level three-wire active power filter (APF). By introducing a simplified carrier-based pulse width modulation (CB-PWM) strategy and analysing the occurrence mechanism of NP potential unbalance, we proposed a NP potential balancing control strategy based on the simplified strategy. With this strategy, the NP current in a sampling period can be calculated through the detection of compensating current of APF. The three phase’s duration time of reference voltage can also be computed through detecting the voltage fluctuation of upper and lower capacitors accurately, according to the law of charge conservation. Experiment results show that this proposed approach with simplified computation can effectively achieve NP potential balance. |
url |
http://dx.doi.org/10.1155/2021/9930767 |
work_keys_str_mv |
AT feili neutralpointpotentialbalancecontrolstrategyonthreelevelactivepowerfilters AT nageng neutralpointpotentialbalancecontrolstrategyonthreelevelactivepowerfilters AT guifengwang neutralpointpotentialbalancecontrolstrategyonthreelevelactivepowerfilters AT chunjieli neutralpointpotentialbalancecontrolstrategyonthreelevelactivepowerfilters AT zhanliu neutralpointpotentialbalancecontrolstrategyonthreelevelactivepowerfilters AT zhenglongxia neutralpointpotentialbalancecontrolstrategyonthreelevelactivepowerfilters |
_version_ |
1721357329219190784 |