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Admittance-Dissipat...
Admittance-Dissipativity Analysis and Shaping of Dual-Sequence Current Control for VSCs
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- Gong, H. (author)
- Department of Energy Technology, Aalborg University, Aalborg 9220, Denmark.
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- Wang, X. (author)
- Department of Energy Technology, Aalborg University, Aalborg 9220, Denmark.
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- Harnefors, Lennart, 1968- (author)
- KTH,Elkraftteknik,ABB, Corporate Research
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- Hasler, Jean Philippe (author)
- HITACHI ABB Power Grids
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- Danielsson, Christer (author)
- HITACHI ABB Power Grids
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Department of Energy Technology, Aalborg University, Aalborg 9220, Denmark Elkraftteknik (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2022
- 2022
- English.
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In: IEEE Journal of Emerging and Selected Topics in Power Electronics. - : Institute of Electrical and Electronics Engineers (IEEE). - 2168-6777 .- 2168-6785. ; 10:1, s. 324-335
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- This paper analyzes the admittance-dissipativity of dual-sequence current control for grid-connected voltage-source converters (VSCs). The output admittance model of dual-sequence current control is first developed in the stationary reference frame by using complex vectors. Impacts of digital filters used within current control and voltage-feedforward (VFF) control loops, and of the delay compensation at the fundamental frequency, are then evaluated. It is found that the cascaded use of sequence-decomposition filter (SDF) and the low-pass filter (LPF) in the VFF control loop adds a non-dissipative region in the output admittance, and the fundamental-frequency delay-compensation further worsens the dissipativity. An analytical design method for the LPF is then developed to mitigate the non-dissipative region, which lowers the instability risks and improves the stability robustness of dual-sequence current control under different grid conditions. Lastly, simulations and experimental results corroborate theoretical analyses.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Admittance
- Converters
- Current control
- delay compensation
- Delays
- Digital filter
- dissipativity
- Power conversion
- sequence control
- Stability analysis
- Transfer functions
- voltage feedforward
- Control systems
- Digital filters
- Electric current control
- Natural frequencies
- System stability
- Analytical design method
- Decomposition filter
- Dissipativity analysis
- Fundamental frequencies
- Stability robustness
- Stationary reference frames
- Voltage feed-forward
- Voltage-source converter
- Low pass filters
Publication and Content Type
- ref (subject category)
- art (subject category)
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