Sample Time Staggered One-cycle Control Strategy of Three-phase H-bridge Cascaded Inverter

An one-cycle control strategy was proposed for three-phase H-bridge cascaded inverter. The formula of switch duty ratio of each inverter unit was derived. It was pointed out that the average value of the switch variables in each switching cycle can be made equal or proportional to the control refere...

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Main Authors: FU Lan-fang, SUN He-xu, DONG Yan
Format: Article
Language:zho
Published: Editorial Department of Industry and Mine Automation 2012-09-01
Series:Gong-kuang zidonghua
Subjects:
Online Access:http://www.gkzdh.cn/article/id/8623
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author FU Lan-fang
SUN He-xu
DONG Yan
author_facet FU Lan-fang
SUN He-xu
DONG Yan
author_sort FU Lan-fang
collection DOAJ
description An one-cycle control strategy was proposed for three-phase H-bridge cascaded inverter. The formula of switch duty ratio of each inverter unit was derived. It was pointed out that the average value of the switch variables in each switching cycle can be made equal or proportional to the control reference by controlling the switch duty ratio. In order to increase level number of output voltage of the cascaded inverter, a scheme was proposed of applying sample time staggered technique in the one-cycle control strategy of cascaded inverter, namely staggering the sampling time of each inverter unit. The simulation result verified fesibility of the sample time staggered one-cycle control strategy applied in three-phase H-bridge cascaded inverter, and the strategy can make output voltage of the inverter have small harmonic content with quick response and strong robustness.
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spelling doaj.art-2d2b8c425ed0403aa0a48ce2ce2d9e902023-03-17T02:01:46ZzhoEditorial Department of Industry and Mine AutomationGong-kuang zidonghua1671-251X2012-09-013895154Sample Time Staggered One-cycle Control Strategy of Three-phase H-bridge Cascaded InverterFU Lan-fangSUN He-xu0DONG Yan11.School of Control Science and Engineering of Hebei University of Techonology, Tianjin 300130, China. 2.Base Department of Military Transportation University, Tianjin 300161, China1.School of Control Science and Engineering of Hebei University of Techonology, Tianjin 300130, China. 2.Base Department of Military Transportation University, Tianjin 300161, ChinaAn one-cycle control strategy was proposed for three-phase H-bridge cascaded inverter. The formula of switch duty ratio of each inverter unit was derived. It was pointed out that the average value of the switch variables in each switching cycle can be made equal or proportional to the control reference by controlling the switch duty ratio. In order to increase level number of output voltage of the cascaded inverter, a scheme was proposed of applying sample time staggered technique in the one-cycle control strategy of cascaded inverter, namely staggering the sampling time of each inverter unit. The simulation result verified fesibility of the sample time staggered one-cycle control strategy applied in three-phase H-bridge cascaded inverter, and the strategy can make output voltage of the inverter have small harmonic content with quick response and strong robustness.http://www.gkzdh.cn/article/id/8623h-bridge cascaded inverter, one-cycle control, sample time staggered, duty ratio
spellingShingle FU Lan-fang
SUN He-xu
DONG Yan
Sample Time Staggered One-cycle Control Strategy of Three-phase H-bridge Cascaded Inverter
Gong-kuang zidonghua
h-bridge cascaded inverter, one-cycle control, sample time staggered, duty ratio
title Sample Time Staggered One-cycle Control Strategy of Three-phase H-bridge Cascaded Inverter
title_full Sample Time Staggered One-cycle Control Strategy of Three-phase H-bridge Cascaded Inverter
title_fullStr Sample Time Staggered One-cycle Control Strategy of Three-phase H-bridge Cascaded Inverter
title_full_unstemmed Sample Time Staggered One-cycle Control Strategy of Three-phase H-bridge Cascaded Inverter
title_short Sample Time Staggered One-cycle Control Strategy of Three-phase H-bridge Cascaded Inverter
title_sort sample time staggered one cycle control strategy of three phase h bridge cascaded inverter
topic h-bridge cascaded inverter, one-cycle control, sample time staggered, duty ratio
url http://www.gkzdh.cn/article/id/8623
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AT sunhexu sampletimestaggeredonecyclecontrolstrategyofthreephasehbridgecascadedinverter
AT dongyan sampletimestaggeredonecyclecontrolstrategyofthreephasehbridgecascadedinverter