Improvement in Harmonic Reduction of a Zigzag Autoconnected Transformer Based 12-Pulse Diode Bridge Rectifier by Current Injection at DC Side

Sheelvant, Vidyasagar; Kalpana, R; Singh, Bhim; Saravana, Prakash P.

doi:10.1109/tia.2017.2734892

Cited by 44 publications

(13 citation statements)

References 22 publications

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“…Equations (1)(2)(3)(4)(5) construct the basic mathematical model of the FW-IFT and the passive filtering branches. This model expresses the constraints among the harmonic voltage, the harmonic current, and the harmonic impedance.…”

Section: Lj3hmentioning

confidence: 99%

“…These nonlinear characteristic harmonics generated by nonlinear loads will freely enter into the utility grid through transformers. Thus, it inevitably brings power-quality (PQ) problems to the HV distribution network [1][2][3][4][5][6]. Therefore, it is necessary to perform harmonic suppression and enhance the grid supply quality by means of a new device and applicable approach.…”

Section: Introductionmentioning

confidence: 99%

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A Four-Winding Inductive Filtering Transformer to Enhance Power Quality in a High-Voltage Distribution Network Supplying Nonlinear Loads

et al. 2019

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This paper solves the problem of reactive power and harmonics compensation in a high-voltage (HV) distribution network supplying nonlinear loads. An inductive filtering (IF) approach where passive filters connect to the filtering winding of a four-winding inductive filtering transformer (FW-IFT) is presented to enhance the power quality of the public grid. This method can not only greatly suppress harmonic currents of the medium and/or low-voltage (LV) side, but also prevent them from flowing into the public grid. The new main circuit topology, where the FW-IFT has specific filtering winding by adopting the ampere-turn balance of the transformer, is presented. On the basis of the structure of the FW-IFT, the magnetic potential balanced equation and inductive filtering technology, its equivalent circuit and mathematical model are established, and the filtering performances are analyzed in detail. Simulation and experimental results rated at SN-10/0.38 of the FW-IFT are presented to prove the efficacy of the comprehensive enhancement of power quality on the grid side.

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Section: Lj3hmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Four-Winding Inductive Filtering Transformer to Enhance Power Quality in a High-Voltage Distribution Network Supplying Nonlinear Loads

et al. 2019

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“…For example, in Bai and Lukic, 11 the authors proposed an active interphase transformer (IPT). In Sheelvant et al, 12 the current injection into the DC side is proposed. In Meng et al and Yang et al, 13,14 the authors recommend an active IPT.…”

Section: Introductionmentioning

confidence: 99%

Harmonics mitigation approach by using pulse‐doubling circuit in the AC–DC rectifier

Abdollahi

Badfar

2021

Circuit Theory & Apps

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In this research, a novel pulse-doubling circuit (PDC) is employed to upgrade the 28-pulse rectifier to the efficient 56-pulse rectifier. The main objective of this research is to reduce the power kVA rating. In the autotransformer with a 14-phase polygon structure, the kVA rating is approximately 39.5% of the load power. Since the pulse-doubling method is utilized, the rectifier with 56 pulses has benefited from a simpler structure. With a comparison to the other rectifiers, the harmonic mitigation is the clearest feature of the proposed rectifier. According to the experimental and theoretical results, in the proposed rectifier with 56 pulses, the input current THD is less than 3%. Finally, the volume and cost of the proposed rectifier with 56 pulses show a notable reduction. In other words, the proposed rectifier is an economical choice for most sectors of the industry.

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“…In [14] and [15], several active auxiliary circuits are recommended and installed at the dc side of the rectifier in order to mitigate the harmonic content. In [16], an active inter-phase transformer circuit (IPTC) with an auxiliary circuit containing an energy storage element is recommended, in [17], current injection into the dc side and in [18] and [19] using an active IPT systems are recommended to reduce the harmonic content. However, the entire valuable recommended methods cannot increase the number of voltage pulses.…”

Section: Introductionmentioning

confidence: 99%

Multi-Phase Shifting Autotransformer Based Rectifier

Abdollahi

2020

IEEE Open J. Ind. Electron. Soc.

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In this paper, a thorough analysis is carried out in order to achieve an optimal design of a forty-four pulse rectifier. In this study, a novel Multi-phase Shifting Autotransformer (MPSA) is introduced, discussed, simulated and implemented to forty-four pulse rectifier with acceptable power rates. Accordingly, the main purpose of the paper is focused on the power kVA rating reduction for power quality applications. It provides a more economical solution to achieve harmonic mitigation in electric power systems as compared with other rectifiers. The simulation and experimental results show that the input current THD is less than 3% using the proposed topology. The results indicate a significant reduction in the total cost and volume of the proposed forty-four pulse configuration in comparison with similar configurations. Also, it is shown that the proposed converter rating is about 42% of the DC load power. INDEX TERMS Forty-four pulse rectifier, multi-phase shifting autotransformer (MPSA), total harmonic distortion (THD).

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Improvement in Harmonic Reduction of a Zigzag Autoconnected Transformer Based 12-Pulse Diode Bridge Rectifier by Current Injection at DC Side

Cited by 44 publications

References 22 publications

A Four-Winding Inductive Filtering Transformer to Enhance Power Quality in a High-Voltage Distribution Network Supplying Nonlinear Loads

A Four-Winding Inductive Filtering Transformer to Enhance Power Quality in a High-Voltage Distribution Network Supplying Nonlinear Loads

Harmonics mitigation approach by using pulse‐doubling circuit in the AC–DC rectifier

Multi-Phase Shifting Autotransformer Based Rectifier

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