A 30-Pulse Rectifier Using Passive Voltage Harmonic Injection Method at DC Link

Li, Quanhui; Meng, Fanwen; Gao, Lei; Zhang, Huaqiang; Du, Qingxiao

doi:10.1109/tie.2019.2956404

Cited by 18 publications

(6 citation statements)

References 18 publications

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“…These solutions can be broadly classified into two types: multi-phase transformers and harmonic suppression methods. In [9][10][11], 18-pulse rectifiers based on 9-output transformers are proposed, resulting in a decrease in the THD of input current from 15.2% to 10.1% compared to the 12-pulse rectifier. In [12][13][14][15][16], 20-pulse rectifiers based on 10-output transformers are proposed, with the THD of input current reaching approximately 9.1%.…”

Section: Introductionmentioning

confidence: 99%

“…In [12][13][14][15][16], 20-pulse rectifiers based on 10-output transformers are proposed, with the THD of input current reaching approximately 9.1%. As indicated by [9][10][11][12][13][14][15][16], multi-phase transformers do enhance the power quality of rectifiers to some extent compared to 12-pulse rectifiers; however, a substantial portion of the harmonics remains unmitigated. The more severe the harmonic pollution at the input, the more pronounced the interference at the output.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Accelerator Power Supply Based on Multi-Pulse Rectifier

Li,

Gao,

Meng

2024

Preprint

Self Cite

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“…Additionally, SCRs are semi-controlled devices and require additional circuitry to implement turn-off capabilities. Although harmonic contamination can be effectively mitigated through the use of filters or multi-pulse rectification techniques, these solutions also lead to an increased size and cost of the converters [14][15][16]. On the other hand, PWM rectifiers offer excellent control characteristics and high power factors.…”

Section: Introductionmentioning

confidence: 99%

Research on Hybrid Rectifier for High Power Electrolytic Hydrogen Production Based on Modular Multilevel Converter

Huang,

Tan,

Meng

2024

Energies

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Aiming at the problem that silicon-controlled rectifiers (SCR) and pulse width modulation (PWM) rectifiers cannot balance high power levels, high hydrogen production efficiency, and high grid connected quality in the current research on rectifier power supplies for electrolytic hydrogen production, a new hybrid rectifier topology based on a modular multilevel converter (MMC) is proposed. The hybrid topology integrates a silicon-controlled rectifier (SCR) with an auxiliary power converter, wherein the SCR is designated as the primary power source for electrolytic hydrogen production. The auxiliary converter employs a cascaded modular multilevel converter (MMC) and an input-series-output-parallel (ISOP) phase-shifted full-bridge (PSFB) arrangement. This configuration allows the auxiliary converter to effectively mitigate AC-side harmonics and minimize DC-side ripple, concurrently transmitting a small amount of power. The effectiveness of the hybrid rectifier in achieving low ripple and harmonic distortion outputs was substantiated through hardware-in-the-loop experiments. Notably, the hybrid topology is characterized by its enhanced electric-to-hydrogen conversion efficiency, elevated power density, cost efficiency, and improved grid compatibility.

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“…The dual passive injection scheme can effectively suppress harmonics even further, but it requires two injection transformers, which increases the magnetic device share of the system and leads to increased hysteresis and eddy current losses, lowering power conversion efficiency. To improve device utilization and reduce magnetic losses, the active harmonic injection scheme is proposed, which do not require the use of too many injection transformers, and ultimately multiply the number of pulses by modulating the circuit parameters with the help of controllable power devices [22][23][24]. Although the rectifier in the active harmonic injection scheme is more compact, the control process is more complex and less robust.…”

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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A 30-Pulse Rectifier Using Passive Voltage Harmonic Injection Method at DC Link

Cited by 18 publications

References 18 publications

An Accelerator Power Supply Based on Multi-Pulse Rectifier

An Accelerator Power Supply Based on Multi-Pulse Rectifier

Research on Hybrid Rectifier for High Power Electrolytic Hydrogen Production Based on Modular Multilevel Converter

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

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