A Hybrid Voltage Regulation Transformer Based on Interline Power Converters

Wang, Yafeng; Zhao, Tiefu

doi:10.1109/apec43599.2022.9773686

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…1. regulation of the reactive power [36] 2. compensation of voltage sags/swells and harmonics [15,[37][38][39][40][41][42][43][44]; 3. regulation of the DC link voltage [39,40] the connection in the HT. The shunt connection provides current mitigation (pow correction, filtering of harmonics, etc.).…”

Section: Htmentioning

confidence: 99%

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A Review on AC Voltage Variation Compensators in Low Voltage Distribution Network

Sztajmec,

Szcześniak

2023

Energies

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Power quality is one of the most important aspects of the power system, especially in the distribution system. This system can be affected by such disturbances as short-term voltage sags/swells, long-term voltage increases/decreases over the normative limits, harmonic distortion, interruptions, etc. Maintaining the electricity quality parameters in accordance with the applicable standards in the power distribution system will require the use of additional devices. The scientific literature on the subject indicates a very wide range of different topologies of AC voltage compensators. In this paper, different power electronics-based AC voltage compensator topologies are reviewed that are typically used with distribution energy systems. A summary of the properties and functionalities of the selected topologies has been presented. This review focuses mainly on the different topologies of the Unified Power Quality Controllers (UPQC) and Hybrid Transformers (HT). This review is divided into several sections. The first section presents the topologies used in UPQC and HT. The second section discusses selected control methods for these systems. The third section presents the basic properties of the systems related to compensating changes in the supply voltage and improvement of power quality. The fourth section presents the use of UPQC and HT systems. Finally, a summary and conclusions are presented.

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Section: Htmentioning

confidence: 99%

“…The voltage compensation/regulation and the reactive power regulation are mostly the main tasks of the HT in the low voltage distribution system [36,40,42,44]. The presence of the power converter in the HT topology ensures the voltage regulation range.…”

Section: Htmentioning

confidence: 99%

A Review on AC Voltage Variation Compensators in Low Voltage Distribution Network

Sztajmec,

Szcześniak

2023

Energies

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“…A hybrid transformer that combines electromagnetic transformers and power electronic devices is also available. Reference [23] proposed a hybrid transformer based on interline power converters for voltage regulation. By comparing and analyzing conventional series voltage compensation methods, the authors pointed out that hybrid transformers exhibit higher overall efficiency within the voltage compensation range.…”

Section: Introductionmentioning

confidence: 99%

Flexible loop closing control method for an active distribution network based on dual rotary phase shifting transformers

Yan

Peng

Wang

et al. 2022

IET Generation Trans & Dist

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Load transfer without power interruption in the loop closing of an active distribution network is the core technology for improving the reliability of power supply. A single rotary phase shifting transformer (RPST) is used in the loop closing scenario with a 30° phase angle difference. However, its regulation mode is single and cannot realize flexible loop closing under any voltage deviation. In this study, a dual rotary phase shifting transformer (DRPST) is proposed to achieve the function of continuously regulating voltage amplitude and phase angle at the loop closing point through the cooperation of dual rotor angles. This DRPST exhibits the advantages of a flexible control mode, high control precision, and high reliability. First, the working principle and mathematical model of the proposed DRPST are analyzed in accordance with its topology. Second, the voltage phase difference feedback method at both sides of the loop closing point based on virtual power is adopted, and the reference value of the DRPST synthesis vector of voltage is obtained by combining with voltage phase and amplitude deviations. Then, the reference value is converted and decomposed into the reference values for dual rotary phase shifting angles, realizing the non‐differential regulation of voltage at both sides of the loop closing point through the closed loop control of double rotor angles and the coordinated control of the servo motors’ speed. Finally, a DRPST device with a capacity of 40 kVA is developed and a loop closing experiment is performed, verifying the feasibility and effectiveness of the proposed DRPST in realizing the loop closing of an active distribution network.

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Direct in-situ Measurement of Magnetic Core Loss under Rectangular Voltage Excitation in Power Electronic Circuits

Yi,

Moon

2024

2024 IEEE Applied Power Electronics Conference and Exposition (APEC)

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A Hybrid Voltage Regulation Transformer Based on Interline Power Converters

Cited by 5 publications

References 10 publications

A Review on AC Voltage Variation Compensators in Low Voltage Distribution Network

A Review on AC Voltage Variation Compensators in Low Voltage Distribution Network

Flexible loop closing control method for an active distribution network based on dual rotary phase shifting transformers

Direct in-situ Measurement of Magnetic Core Loss under Rectangular Voltage Excitation in Power Electronic Circuits

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