Thirty-six pulse rectifier scheme based on zigzag auto-connected transformer

Chen, Xiaoqiang; Chun-Ling, Hao; Qiu, Hao; Li, Min

doi:10.1515/aee-2016-0009

Cited by 9 publications

(4 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be used not only as a grounding transformer in a power distribution system [16], but also as a phase-shifting transformer in a multi-pulse rectifier system. Furthermore, due to the unique characteristic of the zigzag transformer, it can block the zero-sequence current, so the zero sequence blocking transformer can be omitted in the rectifier based on the zigzag transformer [17], thereby reducing the equivalent capacity of the system further.…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Liu,

Chen,

Wang

et al. 2020

View full text Add to dashboard Cite

To improve the power quality of a multi-pulse rectifier, a zigzag 18-pulse uncontrolled rectifier with an auxiliary circuit at the DC side is proposed. When the grid-side currents are sinusoidal waves, the required DC side injection currents to be compensated can be obtained by analyzing the AC-DC side relationship of diode bridge rectifiers. Then the 6 compensation currents generated by an active auxiliary circuit are injected into the DC side to eliminate the grid-side harmonics of the rectifier. The simulation results verifying the correctness of the theoretical analysis show that the proposed rectifier can mitigate the harmonic content, as the total harmonic distortion of the grid-side current is about 1.45%. In addition, the single-phase inverter used in the active auxiliary circuit has the characters of simple circuit structure and easy controllability.

show abstract

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Liu,

Chen,

Wang

et al. 2020

View full text Add to dashboard Cite

show abstract

“…However, with the improvement of the power level, the switching loss and the failure rate are prominent in PWM rectifier (Ismael Araujo-Vargas et al, 2008;Sato et al, 2010). Because of its high reliability, low cost, high efficiency and simple control, multipulse rectifier has become a research hot spot in high-power rectification in recent years (Wei et al, 2012;Yang et al, 2015;Xiao-Qiang. et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Among various types of autotransformers, zigzag autotransformer and its reconfiguration structures are one of the results of many studies. Its main advantage is reflected in its structure which has the ability to block the zero sequence current, so that the DC side circuit does not need the zero sequence blocking transformer, which reduces the cost of the rectification system further (Xiao-Qiang. et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Novel symmetrical step-down topologies of zigzag autotransformer

Wang

Chen

2019

View full text Add to dashboard Cite

Purpose This paper aims to obtain a symmetrical step-down topology with lower equivalent capacity and wider step-down range under the condition of the same output. Three new symmetrical step-down topologies of zigzag autotransformer are proposed in this paper. Taking the equivalent capacity as the main parameter, the obtained topologies are modeled and analyzed in detail. Design/methodology/approach This paper adopts the research methods of design, modeling, analysis and simulation verification. First, the zigzag autotransformer is redesigned according to the design objective of symmetrical step-down topology. Second, the mathematical model of the designed topology is established, and the detailed theoretical analysis is carried out. Finally, the theoretical results are verified by simulation. Findings Three symmetrical zigzag autotransformer step-down topologies are designed, the winding configurations of the corresponding topology are presented, the step-down ranges of these three topologies are calculated and the influence of step-down ratio on equivalent capacity of autotransformer is analyzed. Through analysis, the target step-down topologies are obtained when the step-down ratio is [0.969, 1.414] and [1.414, 8]. Research limitations/implications Because the selected research object is only zigzag autotransformer, the research results may lack generality. Therefore, researchers are encouraged to further study topologies of other autotransformers. Practical implications This paper includes the implications of step-down ratio on the equivalent capacity of autotransformer and the configuration of transformer windings. Originality/value The topologies designed in this paper enable zigzag autotransformer to be applied in step-down circumstances.

show abstract

“…Multi-pulse rectifiers are widely applied in high power rectification for input line harmonic currents reduction [1][2][3][4][5]. The multi-pulse is referred to as the number of output voltage pulse of dc, which is more than 6 pulses during every single cycle in three-phase power supplied system.…”

Section: Introductionmentioning

confidence: 99%

Research of Phase-Shift Angle on the Differential Delta Auto-Connected Transformer

Wang¹,

Chen²,

Li³

et al. 2017

Proceedings of the 3rd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 20

View full text Add to dashboard Cite

Abstract. Using the traditional phase-shift angle, the differential delta-connected transformer is not able to boost voltage. Broadening the phase-shift angle of the autotransformer can boost its output voltage. But the greater phase-shift angle will increase the equivalent kilovolt ampere (KVA) rating as well. This paper analyzes the effect of phase-shift angle on the input currents and the equivalent (KVA) rating of the differential delta-connected transformer. A novel phase-shift angle is proposed, with which the differential delta-connected transformer is suitable to be a step-up autotransformer, meanwhile, the equivalent KVA rating of the autotransformer is still smaller than the isolated transformer. Some simulation is carried out to verify the correctness of the analyses.

show abstract

Thirty-six pulse rectifier scheme based on zigzag auto-connected transformer

Cited by 9 publications

References 23 publications

Archives of Electrical Engineering

Archives of Electrical Engineering

Novel symmetrical step-down topologies of zigzag autotransformer

Research of Phase-Shift Angle on the Differential Delta Auto-Connected Transformer

Contact Info

Product

Resources

About