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양극성 DC 배전용 3상 3-레벨 컨버터의 누설전류저감과 NP 전류제어를 위한 공간벡터 PWM 방법

Title
양극성 DC 배전용 3상 3-레벨 컨버터의 누설전류저감과 NP 전류제어를 위한 공간벡터 PWM 방법
Other Titles
Space Vector PWM Method for Leakage Current Reduction and NP Current Control in 3-phase 3-level Converter used in Bipolar DC Distribution System
Author
김희준
Keywords
Bipolar DC distribution system; 3-level converter; Leakage current; Neutral point current control
Issue Date
2018-11
Publisher
전력전자학회
Citation
전력전자학회 논문지, v. 23, No. 5, Page. 336-344
Abstract
This study proposes a new PWM method for leakage current reduction and neutral point (NP) current control in three-phase three-level converter employed in bipolar DC distribution systems. The proposed PWM method uses medium vectors only when there is no need to control the NP current. Thus, common mode voltages are held constant to realize zero leakage current. Some space vectors that produce low-frequency common mode voltages are employed to minimize leakage currents when the average NP current needs to be a positive or negative value. The proposed space vector PWM is implemented based on barycentric coordinate. The validity of the proposed PWM method is verified by simulations and experiments.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE07541777http://repository.hanyang.ac.kr/handle/20.500.11754/98792
ISSN
1229-2214
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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