Analysis and Suppression of Voltage Harmonic Distortions of the Single-Phase High Frequency Link Matrix-Type DC–AC Converter

Zhu, Wenjie; Cao, Xiaoya; Li, Xuewu; Li, Yunfei; Xu, Ying; Zhou, Keliang

doi:10.1109/access.2022.3229489

Cited by 3 publications

(4 citation statements)

References 23 publications

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“…These results are obtained from Fig. 12 and summarize the odd harmonics at low-frequency band (from 3 rd to 21 st ), which is dominant in the spectrum of output voltage of single-phase inverter [24]. It can be noted that the FFT analysis of the log scale in Fig.…”

Section: Resultsmentioning

confidence: 79%

Proportional–Resonant Controller Based on Virtual Impedance for Harmonic Suppression of ESS-UPS System

Won,

2023

IEEE Access

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A proportional-resonant controller based on the output impedance is proposed for a singlephase full-bridge inverter offering harmonic suppression of uninterruptible power supply with an energy storage system. In order to design the voltage transfer function and output impedance independently, the proposed controller properly places a virtual impedance loop within the output voltage controller, and control gains are selected according to the proposed design rules. To secure a high power quality, the virtual impedance is designed to have low output impedance characteristics in all frequency bands. In addition, some practical issues are analyzed and readily compensated such as parametric error and the performance of output voltage tracking respectively. Mathematical and theoretical analyses are presented to validate the proposed controller, and experiments were conducted to verify its performance.INDEX TERMS Proportional-resonant (PR) controller, virtual impedance, energy storage system (ESS), uninterruptible power supply (UPS), harmonic suppression.

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Section: Resultsmentioning

confidence: 79%

Proportional–Resonant Controller Based on Virtual Impedance for Harmonic Suppression of ESS-UPS System

Won,

2023

IEEE Access

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“…Recent studies have explored such network as detailed in [7], [57]- [60]. In [61], researchers have employed a CB clamp circuit strategically placed at the rear-end network to suppress the output voltage THDs. In contrast, another study [62] explores a bidirectional isolated DC-AC network based on integrated magnetic technology via an inversely coupled inductor as illustrated in Fig.…”

Section: B Dc-ac Inverter Topologymentioning

confidence: 99%

“…Likewise, reference [13] diligently undertook a comprehensive classification of isolated MCs based on AC-side drive techniques. However, this review [46] [47] [48] [ [49][50][51] [ [52][53][54][55] [56] [4,6,42,[67][68][69][70][71] [7, [57][58][59][60][61][62][63][64][65][66] [72] [73][74][75][76] [77] [78] [79] [57,[80][81] [89]…”

Section: Introductionmentioning

confidence: 99%

Emerging Trends in MF/HF Isolated AC-AC/DC-AC/AC-DC Matrix Converter Topologies: A Comprehensive Review

Mahmud,

Gao

2024

Preprint

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The isolated AC-AC/DC-AC/AC-DC matrix converter (MC) is an innovative topology with several benefits including minimum current harmonics, nearly unity power factor, four quadrant (4Q) operation, and bidirectional power flow, making it an ideal choice for energy conversion techniques. Unlike any other AC-AC/DC-AC/AC-DC topologies, the MC topology necessitates electrical medium-frequency (MF)/high-frequency (HF) isolation in order to offer single-stage power conversion. MF/HF power conversion topology has numerous advantages such as high-power density, reduced weight, and low noise while preserving converter’s efficiency, cost, and reliability. This paper aims to report an extensive analysis and classification of different conventional isolated single-stage AC-AC converter, DC-AC inverter, and AC-DC rectifier topologies along with their modified system architecture. In this paper, the AC-AC/DC-AC/AC-DC topologies are classified based on their system architecture, AC-side or DC-side drive techniques, and other subvariants. Our primary objective of this study is to impart a clear understanding of the overarching framework and principles of the isolated AC-AC/DC-AC/AC-DC MC topologies and stimulate the creation of new topologies that cater to specific grid-interconnection requirement.

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“…The authors in (Zhou et al, 2018;Wang et al, 1999) proposed a primary-side phase-shift full-bridge inverter and a secondary-side active clamp circuit (ACC) to achieve soft switching. In (Zhu et al, 2022), primary full bridge inverter switches were operated under hard switching conditions, and the duty cycle of the (ACC) switches is not fixed at 50%, but instead varies from 0 to 1. However, it is challenging for primary-side switches to achieve soft switching under light-load conditions (ul Hassan et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Soft switching modulation strategy based on bipolar (PSM) with improved efficiency in high-frequency link inverters

Ali,

Su,

Yang

et al. 2023

Front. Energy Res.

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High Frequency-Link (HFL) Inverters have been employed to integrate renewable energy sources into utility grids and electric vehicles. The soft-switching range of High-Frequency Link Inverters (HFLI) is increased using auxiliary inductors and capacitors. The application of auxiliary components increases the conduction loss and the complexity of the circuit. The literature indicates that the existing soft-switching methods suffer from higher duty cycle loss, voltage spikes, and lower efficiency owing to the resonance between the parasitic capacitance of switches and the leakage inductance of the transformer. Therefore, it is imperative to develop a modulation strategy that can improve the efficiency of HFLI. In this context, the proposed study develops a cycloconverter-type High-Frequency Link Inverter (CHFLI) based on a Bipolar Phase Shift Modulation (BPSM) strategy without the use of auxiliary components. The proposed modulation strategy enables the semiconductor switches to operate under zero voltage switching. The full-bridge inverter and Full Bridge Active Clamper Circuit (FBAC) switches operate at the same gating signals with a constant duty cycle of 50%. The proposed topology uses built-in magnetizing inductance to achieve zero voltage switching and reduce the duty cycle loss. The leakage energy is recycled from the output filter inductor to the load side using the FBAC. The results indicate that the proposed modulation strategy achieves ZVS and simultaneously achieves an efficiency of 95%. The proposed modulation strategy is easy to implement and does not require complex circuitry.

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Analysis and Suppression of Voltage Harmonic Distortions of the Single-Phase High Frequency Link Matrix-Type DC–AC Converter

Cited by 3 publications

References 23 publications

Proportional–Resonant Controller Based on Virtual Impedance for Harmonic Suppression of ESS-UPS System

Proportional–Resonant Controller Based on Virtual Impedance for Harmonic Suppression of ESS-UPS System

Emerging Trends in MF/HF Isolated AC-AC/DC-AC/AC-DC Matrix Converter Topologies: A Comprehensive Review

Soft switching modulation strategy based on bipolar (PSM) with improved efficiency in high-frequency link inverters

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