Evaluation and Comprehensive Comparison of H-Bridge-Based Bidirectional Rectifier and Unidirectional Rectifiers

Deng, Jiaqing; Cheng, Hong; Shi-yan, WU; Si, Mingjun

doi:10.3390/electronics9020309

Cited by 6 publications

(5 citation statements)

References 25 publications

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“…Due to the benefit of the DC-link capacitor which decouples between both the MSC and GSC, and enables independent control of them, a 2-level back-to-back (2LBTB) converter is a dominant topology used in PMSG wind systems (Apata and Oyedokun, 2020; Porate et al, 2018; Yaramasu and Wu, 2017; Yaramasu et al, 2015, 2017), according to trends in converter topologies which represent the highest percentage figure (35.89%). For small-scale systems, the researchers have put a strong focus on a low-cost topology consisting of a diode-rectifier cascaded by a boost converter (Deng et al, 2020; Nannam et al, 2019). For large WT systems, researchers are interested in multi-level converters to reduce the filter size by reducing the generated harmonics (Bharani Kumar and Bhuvaneswari, 2019; Chithra, 2020; Prajapati and Chudasama, 2020).…”

Section: Trends In Technology and Research Status (Statistics Analysis)mentioning

confidence: 99%

Wind-driven permanent magnet synchronous generators connected to a power grid: Existing perspective and future aspects

et al. 2021

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Scholars are motivated to work in the field of renewable energy systems (RESs) especially on grid-connected wind generators because of the exciting and noticeable developments going on in this area. This progress is utilized to obtain the maximal, efficient, and stable electric power from the RESs and integrating it into existing systems to improve its efficiency, stability, reliability, and overall power quality. Recently, permanent magnet synchronous generators (PMSGs) have become the main pillar of advanced wind systems thanks to their fascinating pluses over other types of wind generators. This paper presents the up-to-date trends in converter topologies, control approaches, maximal power production methods, and grid integration issues for PMSG-based wind systems. The performed statistical analyses assure the dominance of the two-level back-to-back converter among the studied power converter topologies, field-oriented control method for the machine side converter, voltage oriented control method for the grid side converter control, perturb and observe algorithm amongst the studied maximum power point techniques, and fault ride-through capability out of grid integration issues. Further, recent general trends in technological advancements for PMSG wind system components are illustrated as a pie chart in terms of percentage figures. It is expected that the researchers working in this field would benefit from this article in terms of the presented state-of-the-art statistical analyses and its related literature given in this study.

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Section: Trends In Technology and Research Status (Statistics Analysis)mentioning

confidence: 99%

Wind-driven permanent magnet synchronous generators connected to a power grid: Existing perspective and future aspects

et al. 2021

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“…In the industrial field, multi-pulse rectifiers are widely used due to their simple structure, high reliability, and system robustness [1][2][3]. However, due to the use of a large number of nonlinear devices, many harmonics are generated, resulting in harmonic pollution of the utility grid [4][5][6].…”

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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“…Electronics 2024, 13, x FOR PEER REVIEW 2 of 14 of the Vienna rectifier, it has an uncontrollable region (UR) where the signs of the reference voltage and the phase current are opposite to each other. As the Vienna rectifier cannot control its input/output in the UR, the input voltage error occurs, which causes a distortion in the phase current [9][10][11]. This current distortion is termed as a zero current distortion (ZCD) in that it occurs near the zero-crossing point of the phase current.…”

Section: Introductionmentioning

confidence: 99%

An Improved Zero-Current Distortion Compensation Method for the Soft-Start of the Vienna Rectifier

Lee,

Lee

2024

Electronics

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This paper proposes an improved zero-current distortion compensation (IZCDC) method for the Vienna rectifier. The conventional zero-current distortion compensation (ZCDC) method modifies the reference voltages by adding an offset voltage to compensate for the zero-current distortion (ZCD). However, the reference voltages occasionally exceed the linear modulation region by the offset voltage added at the driving start-point of the Vienna rectifier, where the modulation index of phase voltage is relatively large. This causes a hard-start of the Vienna rectifier accompanied by a serious surge and distortion in the phase current. In this paper, the IZCDC method is proposed for achieving the soft-start of the Vienna rectifier. When the overmodulation occurs, the proposed method modifies the conventional offset voltage to the IZCDC component, which is involved in the adjustment of the variance of the phase current, only for a certain phase among the three phases. As the IZCDC component regulates the variance of the phase current to zero, surge and distortion in the phase current can be mitigated. As a result, the Vienna rectifier starts its operation softly while ensuring its normal operation in the transients. The effectiveness of the proposed method is verified through simulations and experimental results.

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Evaluation and Comprehensive Comparison of H-Bridge-Based Bidirectional Rectifier and Unidirectional Rectifiers

Cited by 6 publications

References 25 publications

Wind-driven permanent magnet synchronous generators connected to a power grid: Existing perspective and future aspects

Wind-driven permanent magnet synchronous generators connected to a power grid: Existing perspective and future aspects

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

An Improved Zero-Current Distortion Compensation Method for the Soft-Start of the Vienna Rectifier

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