A wye-delta multi-function balance transformer based power quality control system for single-phase power supply system

Hu, Sijia; Li, Yong; Zhang, Zhiwen; Xie, Bin; Chen, Mingfei; Kubis, Andreas

doi:10.1109/esars.2015.7101430

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…According to the combination of wye-connected and delta-connected topology in the primary and secondary sides, the connection type can be divided into wye-wye, wyedelta, delta-wye, and delta-delta [15][16][17]. In wye-connected topology, the voltage stress of component is √ times that of traditional voltage stress.…”

Section: Three-phase Wye-delta Llc 21 Topologymentioning

confidence: 99%

Analysis of Three-Phase Wye-Delta Connected LLC

Lin

Chen

et al. 2021

Energies

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Three-phase wye–delta LLC topology is suitable for voltage step down and high output current, and has been used in the industry for some time, e.g., for server power and EV charger. However, no comprehensive circuit analysis has been performed for three-phase wye–delta LLC. This paper provides complete analysis methods for three-phase wye–delta LLC. The analysis methods include circuit operation, time domain analysis, frequency domain analysis, and state–plane analysis. Circuit operation helps determine the circuit composition and operation sequence. Time domain analysis helps understand the detail operation, equivalent circuit model, and circuit equation. Frequency domain analysis helps obtain the curve of the transfer function and assists in circuit design. State–plane analysis is used for optimal trajectory control (OTC). These analyses not only can calculate the voltage/current stress, but can also help design three-phase wye-delta connected LLC and provide the OTC control reference. In addition, this paper uses PSIM simulation to verify the correctness of analysis. At the end, a 5-kW three-phase wye–delta LLC prototype is realized. The specification of the prototype is a DC input voltage of 380 V and output voltage/current of 48 V/105 A. The peak efficiency is 96.57%.

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Section: Three-phase Wye-delta Llc 21 Topologymentioning

confidence: 99%

Analysis of Three-Phase Wye-Delta Connected LLC

Lin

Chen

et al. 2021

Energies

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“…In addition, a control strategy has been proposed for the assessment of SAPFs (shunt active power filters), based on the Lyapunov control theory, defines a stable operating region for the interfaced converter during the integration time with the utility grid [2]. Authors in [3] developed a wye-delta multi-function balance transformer based power quality control systems (MBT-PQCS). In [5], authors formulated the indirect matrix converter (IMC)-based unified power quality conditioner topology for a photovoltaic (PV) system for solving the power quality functionalities.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Transient Current Limiters in a Distribution System

Shrivastav¹,

Sadhu

Ganguly³

2018

Eng. Technol. Appl. Sci. Res.

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This paper deals with the performance evaluation of a three-phase transient current limiter in distribution systems. A simulation model based on mathematical model of a three-phase, transient current limiter has been developed. The problem is formulated to justify the stable and harmonic free twelve-pulse and six-pulse converter based transient current limiter. Firstly, conventional methods like Bode Plot, Nyquist Plot and Nichols Chart are used to investigate the stability of twelve-pulse and six-pulse converter based transient current limiter. Next, a comparative analysis using fast Fourier transform is used to check the system harmonics using MATLAB simulation. The proposed design is found to be more efficient in making the system stable and harmonic free.

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A wye-delta multi-function balance transformer based power quality control system for single-phase power supply system

Cited by 2 publications

References 19 publications

Analysis of Three-Phase Wye-Delta Connected LLC

Analysis of Three-Phase Wye-Delta Connected LLC

Performance Analysis of Transient Current Limiters in a Distribution System

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