A compact autotransformer based 12-pulse rectifier circuit

Kamath, G.R.; Runyan, B.; Wood, R.

doi:10.1109/iecon.2001.975977

Cited by 39 publications

(10 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For increasing input current, the voltage v L drop across the input inductor increases and the length of v * LIT decreases according to (15). For the specifications given in Tables I and III, the minimal output voltage is slightly below 490 V at nominal output power and slightly above 560 V at zero-input current.…”

Section: Space-vector Modulationmentioning

confidence: 97%

Closed-Loop Sinusoidal Input-Current Shaping of 12-Pulse Autotransformer Rectifier Unit With Impressed Output Voltage

Biela¹,

Hassler²,

Schönberger³

et al. 2011

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

This paper presents a novel closed-loop currentcontrol strategy for a hybrid 12-pulse rectifier that uses a twoswitch boost stage for output-voltage regulation. Unlike previous attempts to mitigate input-current distortion, e.g., by modulating the rectifier output voltage with open-loop control, this new closed-loop current-control scheme directly controls the lineinterphase-transformer input voltage and/or impresses sinusoidal input currents. In this paper, the control strategy is explained and the modulation functions for each (π/6)-wide mains voltage sector are derived. The hardware implementation is described, and experimental results demonstrate that the control strategy ensures a high-quality input current for ideal as well as for distorted/unbalanced mains.

show abstract

Section: Space-vector Modulationmentioning

confidence: 97%

Closed-Loop Sinusoidal Input-Current Shaping of 12-Pulse Autotransformer Rectifier Unit With Impressed Output Voltage

Biela¹,

Hassler²,

Schönberger³

et al. 2011

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

show abstract

“…But the THD of ac mains current with this topology is around 8% at full load. Kamath et al [10], [11] have also reported 12-pulse and 18-pulse converters, but THD of ac mains current in an 18-pulse converter is high even at full load (6.9%), and as load decreases the THD increases further (13.1% THD at 50% load), thus, violating the IEEE Standard 519-1992 [2].…”

Section: Introductionmentioning

confidence: 98%

Harmonic Mitigation in AC--DC Converters for Vector Controlled Induction Motor Drives

Singh

Bhuvaneswari

Garg

2009

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

This paper deals with autotransformer-based multipulse ac-dc converters with reduced magnetics feeding vector controlled induction motor drives for improving the power quality at the point of common coupling. The proposed 12-pulse acdc converter-based harmonic mitigator consists of an autotransformer alongwith a passive shunt filter tuned for 11th harmonic frequency. This results in the elimination of 5th, 7th, and 11th harmonic currents. Similarly, the proposed 18-pulse ac-dc converterbased harmonic mitigator eliminates the 5th, 7th, 11th, 13th, and 17th harmonic currents, thereby improving the power quality at ac mains. The experimentation is carried out on the developed prototype of autotransformers-based ac-dc converters. Different power quality indexes of the proposed 12-pulse and 18-pulse ac-dc converters are obtained from simulation and verified from experimental results.Index Terms-Autotransformer, multipulse ac-dc converter, passive filter, power quality improvement, vector controlled induction motor drives (VCIMD).

show abstract

“…Steffan et al [7] have reported a quasi 12-pulse rectifier for harmonic reduction, but here also the THD of the ac mains current at full load is 10.5% and at 40% load, it is around 20%. Kamath et al [8] have also reported a 12-pulse converter, but the THD of the ac mains current is high even at full load (10.1%) and as load decreases, the THD increases further (17% THD at 50% load). In this paper, a novel autotransformer-based 12-pulse ac-dc converter with reduced kilovolt-ampere (kVA) rating is proposed to feed the VCIMD.…”

Section: Introductionmentioning

confidence: 99%

Harmonic Mitigation Using 12-Pulse AC–DC Converter in Vector-Controlled Induction Motor Drives

Singh

Bhuvaneswari

Garg

2006

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

In this paper, a novel autotransformer with a reduced kilovolt-ampere rating is presented for harmonic current reduction in twelve-pulse ac-dc converter-fed vector-controlled induction motor drives (VCIMDs). Different transformer arrangements for 12-pulse-based rectification are also studied and a novel harmonic mitigator capable of suppressing fifth, seventh, and 11th (most dominant harmonics) in the supply current is presented. The design procedure for the proposed autotransformer is presented to show the flexibility in the design for making it a cost-effective replacement suitable for retrofit applications, where presently a six-pulse diode bridge rectifier is being used. The effect of load variation on VCIMD is also studied to demonstrate the effectiveness of the proposed harmonic mitigator. A set of power-quality indices on input ac mains and on a dc bus for a VCIMD fed from different 12-pulse ac-dc converters is given to compare their performance.Index Terms-Autotransformer, multipulse AC-DC converter, power-quality improvement, vector-controlled induction motor drive (VCIMD).

show abstract

A compact autotransformer based 12-pulse rectifier circuit

Cited by 39 publications

References 1 publication

Closed-Loop Sinusoidal Input-Current Shaping of 12-Pulse Autotransformer Rectifier Unit With Impressed Output Voltage

Closed-Loop Sinusoidal Input-Current Shaping of 12-Pulse Autotransformer Rectifier Unit With Impressed Output Voltage

Harmonic Mitigation in AC--DC Converters for Vector Controlled Induction Motor Drives

Harmonic Mitigation Using 12-Pulse AC–DC Converter in Vector-Controlled Induction Motor Drives

Contact Info

Product

Resources

About