General Injection Transformer Turn Ratio Design Method and Hybrid Harmonic Reduction Methods for Series-Connected Multipulse Rectifiers

Li, Quanhui; Du, Qingxiao; Yin, Xinyu; Gao, Lei; Meng, Fanwen

doi:10.1109/tpel.2022.3195175

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…To enhance both input power quality and reduce load voltage ripple, we introduced hybrid harmonic suppression in [26]. The harmonic suppression circuit comprises an AST, two diodes, and multiple switches.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, in the event of a switch failure, the passive component continues to operate, enhancing the reliability of the hybrid harmonic suppression circuit. However, in [26], as the number of switches increases, the rectifier generates 5th and 7th harmonics, impacting the load ripple to some extent.…”

Section: Introductionmentioning

confidence: 99%

“…1, the hybrid harmonic suppression circuit comprises only an AST, two diodes, and a switch operating at a frequency of 300 Hz. In comparison to the hybrid method in [26], the number of switches is reduced while the harmonic suppression ability remains essentially unchanged. The proposed MPR with a hybrid harmonic suppression method offers advantages including high input power quality, low output voltage level, high reliability, and simple implementation.…”

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%

Section: Introductionmentioning

confidence: 99%

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An Accelerator Power Supply Based on Multi-Pulse Rectifier

Li,

Gao,

Meng

2024

Preprint

Self Cite

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“…Hence, it is necessary to seek a harmonic suppression method with the advantages of both active and passive modes. The hybrid harmonic injection approach using a combination of active and passive devices reduces the footprint of the equipment while retaining a certain level of immunity to interference and uses fewer active devices, making the control part more straightforward compared to the active injection link alone, which is an alternative harmonic suppression scheme [25,26]. There are currently hybrid harmonic injection schemes applied to series 12-pulse rectifier harmonic suppression specific schemes that can achieve high pulse number operation such as 36, 48, and only one injection transformer is required, reducing the size of the rectifier system and the capacity of the magnetic devices significantly when compared to dual passive injection methods [27][28][29].…”

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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