A 24-Pulse Rectifier With a Passive Auxiliary Current Injection Circuit at DC Side

Wang, Jingfang; Lv, Yusheng; Li, Lei; Yao, Xulıang; Qi, Guang; Chen, Qiming

doi:10.1109/tpel.2022.3160944

Cited by 15 publications

(5 citation statements)

References 21 publications

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“…The harmonic suppression circuit comprises an AST, two diodes, and multiple switches. In comparison to the passive harmonic suppression methods in [17][18][19][20][21][22] and the active harmonic suppression methods in [23][24][25], the harmonic suppression ability is significantly enhanced. Unlike the active methods in [23][24][25], the operating frequency is decreased by tens or even hundreds of times, resulting in a reduction of high-order harmonics and contributing to the mitigation of load voltage ripple.…”

Section: Introductionmentioning

confidence: 98%

“…To ensure three-phase balance and enhance input power quality, various DC link harmonic suppression methods are proposed, primarily categorized as passive, active, and hybrid methods. The passive methods in [17][18][19][20][21][22] typically involve an auxiliary single transformer (AST) and multiple diodes for harmonic suppression. In [17][18][19], the theoretical THD of the input current is reduced from 15.2% to approximately 7.6%, and the experimental results show a decrease from about 10% to 4%, suppressing the (12k±1)-th harmonics.…”

Section: Introductionmentioning

confidence: 99%

“…The passive methods in [17][18][19][20][21][22] typically involve an auxiliary single transformer (AST) and multiple diodes for harmonic suppression. In [17][18][19], the theoretical THD of the input current is reduced from 15.2% to approximately 7.6%, and the experimental results show a decrease from about 10% to 4%, suppressing the (12k±1)-th harmonics. In [20][21][22], the theoretical THD of the input current is reduced from 15.2% to about 5%, with experimental results around 3%, effectively suppressing most of the (12k±1)-th and (24k±1)-th harmonics.…”

Section: Introductionmentioning

confidence: 99%

“…However, the switches induce high-order harmonic pollution and diminish system reliability. According to [17][18][19][20][21][22][23][24][25], MPRs employing passive harmonic suppression methods exhibit low input power quality and high load voltage ripple. Despite active harmonic suppression methods enhancing harmonic suppression capability, high-order harmonics still contribute to load voltage ripple.…”

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: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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“…In addition, multiple winding interactions increase material utilization. Literature [24][25][26][27][28] used auxiliary non-passive circuits on the DC side of the rectifier for harmonic suppression without increasing the structural complexity of the phase-shifted transformer; however, the theoretical value of the voltage harmonic distortion rate on the AC side is high and there is still room for improvement. Literature [29] came up with a series 24-pulse rectifier based on the DC-side passive voltage harmonic injection method.…”

Section: Introductionmentioning

confidence: 99%

A Novel Series 24-Pulse Rectifier Operating in Low Harmonic State Based on Auxiliary Passive Injection at DC Side

Chen,

Bai,

Wang

et al. 2024

Electronics

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To reduce the current harmonics on the input side of a multi-pulse rectifier, this paper proposes a low harmonic current source series multi-pulse rectifier based on an auxiliary passive injection circuit at the DC side. The rectifier only needs to add an auxiliary passive injection circuit on the DC side of the series 12-pulse rectifier, which can change its AC input voltage from 12-step waves to 24-step waves. We analyzed the working mode of the rectifier, optimized the optimal turn ratio of the injection transformer from the perspective of minimizing the total harmonic distortion (THD) value of the input voltage on the AC side, and analyzed the diode open circuit fault in the auxiliary passive injection circuit. Test verification shows that, after using the passive harmonic injection circuit, the THD value of the input voltage of the AC side of the rectifier is reduced from 14.03% to 4.86%. The THD value of the input current is reduced from 5.30% to 2.16%. The input power factor has been increased from 98.86% to 99.83%, and the power quality has been improved.

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