A 3-D generalized direct PWM for 3-phase 4-wire APFs
Ning-Yi Dai1; Man-Chung Wong1; Ying-Duo Han1,2; Chi-Seng Lam1
Conference Name40th Annual Meeting of the IEEE-Industry-Applications-Society
Source PublicationConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Conference Date2-6 Oct. 2005
Conference PlaceKowloon, Hong Kong, China
Author of SourceIEEE
Publication Place345 E 47TH ST, NEW YORK, NY 10017 USA

A 3-dimensional (3D) generalized direct PWM algorithm for multilevel converters in a three-phase four-wire active power filter is proposed. It is proved to be equivalent to the newly proposed generalized 3D space vector modulation (SVM). However, the direct PWM greatly simplifies the control algorithm and is much easier to implement in digital processors. The direct PWM is applied to an active power filter, where a three-level NPC inverter is used. Important issues for implementing the DPWM in three-level inverter, such as d.c. voltage variation control and over-modulation, are discussed in detail. A d.c. voltage variation control strategy in a-b-c coordinates is also proposed. Simulation results are given to show the validity of the proposed control strategy. 

KeywordActive Power Filter Direct Pwm Three-phase Fourwire System
URLView the original
Indexed BySCI
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic ; Engineering, Mechanical
WOS IDWOS:000234673201079
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Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
Affiliation1.Faculty of Science and Technology, University of Macau, Macau, China
2.Department of Electrical Engineering, Tsinghua University, Beijing, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Ning-Yi Dai,Man-Chung Wong,Ying-Duo Han,et al. A 3-D generalized direct PWM for 3-phase 4-wire APFs[C]//IEEE. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2005:1261-1266.
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