Flexible Power Regulation and Limitation of Voltage Source Inverters under Unbalanced Grid Faults
CES Transactions on Electrical Machines and Systems, 2022 This paper develops a flexible power regulation and limitation strategy of voltage source inverters (VSIs) under unbalanced grid faults. When the classical power theory is used under unbalanced grid faults, the power oscillations and current distortions ...
Peng Cheng +4 more
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Synchronous power control of grid-connected power converters under asymmetrical grid fault [PDF]
, 2017 Control of grid-connected power converters is continuously developing to meet the grid codes, according to which the generation units should keep connected to the grid and further provide ancillary services, such as voltage and frequency support ...
Candela García, José Ignacio +3 more
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IEEE Access, 2020 To improve the fault-tolerant operation capability of bidirectional voltage source converter (BVSC), an improved model predictive current control (IMPCC) for fault-tolerant BVSC, is proposed with balanced DC-link capacitor voltage under unbalanced grid ...
Shiyang Hu +3 more
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A multifunctional dynamic voltage restorer for power quality improvement [PDF]
, 2018 Power quality is a major concern in electrical power systems. The power quality disturbances such as sags, swells, harmonic distortion and other interruptions have an impact on the electrical devices and machines and in severe cases can cause serious ...
Dung, Vo Tien +2 more
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Tradeoffs between AC power quality and DC bus ripple for 3-phase 3-wire inverter-connected devices within microgrids [PDF]
, 2011 Visions of future power systems contain high penetrations of inverters which are used to convert power from dc (direct current) to ac (alternating current) or vice versa.
Burt, Graeme M. +2 more
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A Novel Phase locked Loop Scheme for Grid Voltage Synchronisation Using the Energy Operator [PDF]
, 2015 A well-known issue with existing power systems is rapid and accurate synchronisation to grid voltages when the system is unbalanced under grid fault conditions and corrupted with harmonics. This paper presents a novel phase locked loop technique for grid
Chong, BVP, Nwobu, CJ, Zhang, L
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IET Power Electronics, 2023 The operational stability of grid‐connected converters is affected by unbalanced grid voltage, which often leads to overcurrent. The traditional control method maintains the grid‐into current within the rated limit by adjusting the current reference ...
Qi Wang, Peng Yu, Peng Wang
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Enhancement of Power Quality of Single Stage Grid Connected PV System by Using Takagi-Sugeno-Kang Fuzzy Controllers [PDF]
E3S Web of ConferencesGrid connected solar power plants are widely established in many places worldwide. Photovoltaic (PV) based grid connected solar plants are attracting recently due to improved in controlling of power converters.
Faujdar Pramod Kumar +3 more
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PI-based controller for low-power distributed inverters to maximise reactive current injection while avoiding over voltage during voltage sags [PDF]
, 2018 This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright.
Camacho Santiago, Antonio +4 more
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Improved DPC Strategy of Grid-connected Inverters under Unbalanced and Harmonic Grid Conditions [PDF]
Journal of international Conference on Electrical Machines and Systems, 2013 This paper presents an improved direct power control (DPC) strategy for grid-connected voltage source inverter (VSI) under unbalanced and harmonic grid voltage conditions. Based on the mathematic model of VSI with the negative sequence, 5th and 7th harmonic voltage components consideration, a PI controller is used in the proposed DPC strategy to ...
null Yongbo Shen, null Heng Nian
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