Harmonic Reduction Methods at DC Link of Series-Connected Multi-Pulse Rectifiers: A Review

Du, Qingxiao; Gao, Lei; Li, Quanhui; Liu, Wei; Yin, Xinyu; Meng, Gang Fan

doi:10.1109/tpel.2021.3118040

Cited by 20 publications

(7 citation statements)

References 44 publications

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“…From Fig. 6, ( 5) and ( 6), the equivalent resistance Re meets s1 e s1 U R I = (7) For the sake of the analysis, only the current of A phase is analyzed here. From Fig.…”

Section: A Calculating Power Factor Angle Calculatementioning

confidence: 99%

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An Accelerator Power Supply Based on Multi-Pulse Rectifier

Li,

Gao,

Meng

2024

Preprint

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To enhance the power quality of the accelerator power supply system, a series-connected multi-pulse rectifier (MPR) is proposed, utilizing a novel hybrid harmonic suppression method. The operating modes are analyzed by considering the topology of the rectifier. The turn ratio and switching angle are determined based on the operating mode, with the goal of minimizing the total harmonic distortion (THD) of the input voltage. To further study the performance of the rectifier and lay a foundation for its application of accelerator power supply system, the relationship among the amplitude and frequency of input voltage, the input inductors the load and the output voltage is researched. Testing results show that after using the proposed harmonic suppression method, the capacity of the injection transformer is only about 2% of the output power, the THD values of the input voltages and currents reduce significantly, the output voltage has low ripple with different loads.

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“…From Fig. 6, ( 5) and ( 6), the equivalent resistance Re meets s1 e s1 U R I = (7) For the sake of the analysis, only the current of A phase is analyzed here. From Fig.…”

Section: A Calculating Power Factor Angle Calculatementioning

confidence: 99%

“…Numerous solutions have been proposed to enhance the power quality of MPR [7][8]. These solutions can be broadly classified into two types: multi-phase transformers and harmonic suppression methods.…”

Section: Introductionmentioning

confidence: 99%

An Accelerator Power Supply Based on Multi-Pulse Rectifier

Li,

Gao,

Meng

2024

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Series‐connected MPRs are widely served as interfaces between an AC generator and a DC bus because of the high load voltage level [1–3]. But the main transformers in all the existing literatures are isolation type or semi‐isolation type, compared to the auto‐type, the power density is reduced [4–6].…”

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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“…The main harmonic suppression methods for MPRs are the passive suppression method of setting filters at AC side to compensate for grid-side harmonics and the active suppression method of boosting the pulse number [7,8]. A 36-pulse diode rectifier used on a motor's front end is discussed in [9].…”

Section: Introductionmentioning

confidence: 99%

A new series‐connected 36‐pulse rectifier with hybrid DC‐reinjection method for high power output

Wang

Chen

et al. 2023

IET Power Electronics

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In this study, a new 36‐pulse rectifier with a hybrid DC‐reinjection circuit is proposed. It multiplies the AC‐side input voltage steps from 12 to 36 using a hybrid auxiliary circuit for voltage and current modulation. Both the AC and DC side harmonics of the rectifier system are efficiently suppressed when combined with filter capacitors at DC side. Only 2 more diodes and an IGBT are used in the proposed approach for constituting the injection circuit. The cascaded structure of rectifier bridges allows for significant voltage gain, making it appropriate for high power output rectification applications. The proposed 12‐pulse rectifier's phase shifting structure and 36‐pulse rectifier's operational theory are introduced. The injection transformer's turn ratio and the IGBT's conduction angle are both designed to have the lowest possible harmonic distortion of the voltage at AC side. Analyses are done on the rectifier's impedance matching feature and energy loss of IGBT. The operating performance of the rectifier is assessed when the active switch fails. With the help of a 1.8 kW prototype and a HIL system based on Starsim, the theoretical portion is confirmed. The results of the simulation and experiments support the effectiveness of the hybrid voltage harmonic injection method studied.

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Harmonic Reduction Methods at DC Link of Series-Connected Multi-Pulse Rectifiers: A Review

Cited by 20 publications

References 44 publications

An Accelerator Power Supply Based on Multi-Pulse Rectifier

An Accelerator Power Supply Based on Multi-Pulse Rectifier

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

A new series‐connected 36‐pulse rectifier with hybrid DC‐reinjection method for high power output

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