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APOD PWM Based Method to Suppress Zero-Sequence Circulating Current in Parallel Three-Level NPC Inverters under Interleaved Operation
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Publication Year
2022-01-01
Journal
2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
Publisher
Institute of Electrical and Electronics Engineers Inc.
Citation
2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
Keyword
APOD PWMDRPWMInterleaved PWMOptimized zero-sequence voltage injection methodParallel three-level NPC inverterZero-sequence circulating current
Mesh Keyword
Alternative phase opposition disposition pulse width modulationCirculating currentDouble-reference PWMInjection methodInterleaved PWMOptimized zero-sequence voltage injection methodParallel three-level NPC invertePhase opposition dispositionsPulsewidth modulations (PWM)Three level NPC inverterVoltage injectionZero sequence voltageZero sequencesZero-sequence circulating current
All Science Classification Codes (ASJC)
Electrical and Electronic EngineeringMechanical EngineeringSafety, Risk, Reliability and QualityEnergy Engineering and Power TechnologyRenewable Energy, Sustainability and the EnvironmentControl and Optimization
Abstract
This paper presents a method to reduce high-frequency (HF) and low-frequency (LF) zero-sequence circulating current (ZSCC) simultaneously under the interleaved operating conditions. Recently, a parallel operation of inverters has been widely used to obtain high power ratings. A parallel operation degrades the quality of the output current because the current harmonics of each inverter overlap. While the interleaved operation prevents the increment of the current harmonics, HF-ZSCC generated by intentional carrier phase difference is inevitable. The carrier modulation method using the alternative phase opposition disposition pulse width modulation (APOD PWM) is effective to reduce ZSCC generated by the interleaved PWM. In this paper, both the double-reference PWM (DRPWM) method and the optimized zero-sequence voltage (ZSV) injection method based on APOD PWM are used to reduce HF- and LF-ZSCC respectively. The feasibility and effectiveness of the proposed method are verified by simulation results.
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/36798
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85144034066&origin=inward
DOI
https://doi.org/10.1109/ecce50734.2022.9947445
Journal URL
http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=9947299
Type
Conference
Funding
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20206910100160)
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Lee, Kyo-Beum이교범
Department of Electrical and Computer Engineering
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