A 36-Pulse AC–DC Converter With DC-Side Tapped Interphase Bridge Rectifier for Power Quality Improvement

P, Saravana Prakash; Kalpana, R; Chethana, K; Singh, Bhim

doi:10.1109/tia.2020.3028341

Cited by 18 publications

(10 citation statements)

References 21 publications

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“…Also, the 12-pulse rectifier with the proposed PMC is superior in comparison to the 12-pulse rectifiers with the PMCs in ref. [39][40][41][42][43][44][45][46][47] both in terms of input current THD and in terms of the kVA rating. Of course, the kVA rating of 12-pulse rectifiers with PMCs in ref.…”

Section: Kilovolt Ampere Ratingmentioning

confidence: 99%

“…It should be noted that the proposed PMC has 2 additional diodes compared to the PMC presented in ref. [30,[39][40][41][42][43][44][45][46][47][48][49], which leads to an increase in cost, an increase in connection loss, and a decrease in efficiency. But it should be noted that the autotransformer in multi-pulse rectifiers takes the main part in cost and efficiency.…”

Section: Kilovolt Ampere Ratingmentioning

confidence: 99%

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A novel pulse multiplication circuit for reducing harmonic distortion of 12 pulse rectifiers in aircraft electrical power systems

Abdollahi

Salemnia

Abdolhosseini

2023

IET Electrical Syst in Trans

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To improve the performance and reduce the total harmonic distortion (THD) of the autotransformer 12‐pulse rectifier, a novel pulse multiplication circuit (PMC) based on two tapped inter‐phase reactors (TIPRs) is proposed to improve performance and reduce the THD of the autotransformer 12‐pulse rectifier. The proposed rectifier includes a phase‐shifting autotransformer based on a polygon connection, two 6‐pulse diode bridge rectifiers (DBRs), and a PMC. The novel PMC consists of two TIPRs (TIPR1 and TIPR2), an auxiliary single‐phase diode bridge (including four diodes D1 to D4), and two auxiliary diodes D21 and D22, which are connected directly to the output terminal of the DBRs (DBR1 and DBR2). The simulation and experimental results confirm the high capability of the proposed PMC to reduce the harmonic distortion of the input current, so that by using the proposed PMC, the input current is almost sinusoidal and the THD of the input current is less than 3%. Also, the results show that the proposed 12‐pulse rectifier meets the standard requirements of aircraft electrical systems (DO‐160G) without the need for any input and output filters.

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Section: Kilovolt Ampere Ratingmentioning

confidence: 99%

Section: Kilovolt Ampere Ratingmentioning

confidence: 99%

A novel pulse multiplication circuit for reducing harmonic distortion of 12 pulse rectifiers in aircraft electrical power systems

Abdollahi

Salemnia

Abdolhosseini

2023

IET Electrical Syst in Trans

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“…In [22][23][24][25][26][27][28][29][30][31] the transformers are auto-type. In [22][23][24][25] the transformers output two sets of three-phase voltages with a 30 • phase difference, and in [26][27][28] the transformers output three sets of three-phase voltages with a 20 • phase difference. In [29][30][31] the transformers output two sets of five-phase voltage with an 18 • phase difference to perform 20-pulse rectification.…”

Section: Introductionmentioning

confidence: 99%

“…Compared to the isolation type transformers, the kVA rating of the auto type transformers is reduced by about 60%. However, the rectifiers in [22][23][24][25][26][27][28][29][30][31] are all parallel-connected MPRs, and there is no precedent for using series rectifiers.…”

Section: Introductionmentioning

confidence: 99%

Research on harmonic generation principle of series‐connected multi‐pulse rectifiers and optimization design method for main transformers

Li,

Gao,

Meng

2024

IET Power Electronics

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To improve the power density of series‐connected multi‐pulse rectifiers (MPRs), the harmonic generation principle is studied and the optimization design method for main transformers is proposed. According to the topology of series‐connected 18‐pulse rectifier, its operation waveforms are analysed, and the Fourier series of the waveforms is obtained. Based on the operation waveforms and its Fourier analysis, the principle for harmonic generation of the rectifier is researched, and the phenomenon of autotransformer cannot be applied to series‐connected MPRs is researched. According to the characteristics of the transformer, its vector graphics are analysed. Based on the vector graphics, the optimal structure of the transformer with the highest power density is obtained. The results show that the premise of the normal operation of series‐connected MPRs is the potential difference between the neutral points of different secondary windings, and only isolation/semi‐isolation transformers meet the requirement; the kilovolt‐ampere (kVA) rating of the optimal isolation type transformer is 104.6% pu, and the kVA rating of the optimal semi‐isolation type transformer is about 71.23% pu.

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“…Other numbers of pulses can be used, such as a ten-pulse diode rectifier is applied in the case of five-phase generators [6]. The reduction of the harmonic distortion is due to the cancelation of the low-order harmonic currents generated by the rectifier [3], [7]. Moreover, multipulse rectifiers can operate at a near-unity power factor by increasing the number of pulses, and line current harmonic distortion is also reduced [8].…”

Section: Introductionmentioning

confidence: 99%

New Methodology to Calculate DC Voltage Signature in N-Phases TRUs Under Supply Voltage Sags

Saura¹,

Bakkar²,

Bogarra³

2022

IEEE Access

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A new methodology based on the shadow projection has been developed to study any multipulse rectifier's dynamic behavior under balanced and unbalanced conditions. The proposed methodology calculates the DC average voltage and instantaneous values under balanced and unbalanced supply voltage conditions for multiphase Transformer Rectifier Units (TRUs). The calculation of the developed algorithms is more practical than the classical methods and other approaches based on Fourier series or symmetrical components that are difficult to apply under unbalanced conditions. Furthermore, classical methods are not simple to determine the limits of the integrals and calculate them to obtain the average value, so a more friendly and practical methodology has been developed to analyze rectifiers operating under supply voltage sags. This new methodology has been validated by simulation for a 12-pulse TRU in series and parallel connections, and it has also been validated for a 36-pulse TRU in parallel connection using interphase inductors. The accuracy of the calculations is validated by the experimental results for 12-pulse TRUs, series, and parallel connection, and 18-pulse TRU in series connection.INDEX TERMS Multipulse rectifier, shadow projection, transformer rectifier unit, unbalanced voltage condition, sags.

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A 36-Pulse AC–DC Converter With DC-Side Tapped Interphase Bridge Rectifier for Power Quality Improvement

Cited by 18 publications

References 21 publications

A novel pulse multiplication circuit for reducing harmonic distortion of 12 pulse rectifiers in aircraft electrical power systems

A novel pulse multiplication circuit for reducing harmonic distortion of 12 pulse rectifiers in aircraft electrical power systems

Research on harmonic generation principle of series‐connected multi‐pulse rectifiers and optimization design method for main transformers

New Methodology to Calculate DC Voltage Signature in N-Phases TRUs Under Supply Voltage Sags

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