Reduction of DC Current Ripples by Virtual Space Vector Modulation for Three-Phase AC–DC Matrix Converters

Dang, Hoang-Long; Jun, Eun-Su; Kwak, Sangshin

doi:10.3390/en12224319

Cited by 4 publications

(5 citation statements)

References 27 publications

(46 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To ensure precise control, we harnessed the power of space vector modulation (SVPWM) throughout our research. By meticulously manipulating the state of the individual six switching devices within the inverters, authors emulated the sinusoidal waveforms characteristic of the AC network with remarkable fidelity [31]. This fine-grained control allowed us to adjust both frequency and amplitude parameters with exquisite precision, guaranteeing robust and accurate experimental conditions.…”

Section: Arc Failure Specifications and Characteristicsmentioning

confidence: 99%

See 1 more Smart Citation

Advanced Learning Technique Based on Feature Differences of Moving Intervals for Detecting DC Series Arc Failures

Dang,

Kwak,

Choi

2024

Machines

Self Cite

View full text Add to dashboard Cite

DC microgrids are vital for integrating renewable energy sources into the grid, but they face the threat of DC arc faults, which can lead to malfunctions and fire hazards. Therefore, ensuring the secure and efficient operation of DC systems necessitates a comprehensive understanding of the characteristics of DC arc faults and the implementation of a reliable arc fault detection technique. Existing arc-fault detection methods often rely on time–frequency domain features and machine learning algorithms. In this study, we propose an advanced detection technique that utilizes a novel approach based on feature differences between moving intervals and advanced learning techniques (ALTs). The proposed method employs a unique approach by utilizing a time signal derived from power supply-side signals as a reference input. To operationalize the proposed method, a meticulous feature extraction process is employed on each dataset. Notably, the difference between features within distinct moving intervals is calculated, forming a set of differentials that encapsulate critical information about the evolving arc-fault conditions. These differentials are then channeled as inputs for advanced learning techniques, enhancing the model’s ability to discern intricate patterns indicative of DC arc faults. The results demonstrate the effectiveness and consistency of our approach across various scenarios, validating its potential to improve fault detection in DC systems.

show abstract

Section: Arc Failure Specifications and Characteristicsmentioning

confidence: 99%

“…characteristic of the AC network with remarkable fidelity [31]. This fine-graine allowed us to adjust both frequency and amplitude parameters with exquisite guaranteeing robust and accurate experimental conditions.…”

Section: Arc Failure Specifications and Characteristicsmentioning

confidence: 99%

Advanced Learning Technique Based on Feature Differences of Moving Intervals for Detecting DC Series Arc Failures

Dang,

Kwak,

Choi

2024

Machines

Self Cite

View full text Add to dashboard Cite

show abstract

“…As can be seen in Figure 10 and Table 4, unlike the current doubler CSR in [16] and matrix-type CSR in [17], a standard six-switch CSR has six transistors and six diodes, as well as the proposed one. Although a three-switch CSR is designed in [18], the converter has the maximum number of diodes and the conduction loss is high.…”

Section: Comparative Analysis Of Other Conventional Csrsmentioning

confidence: 99%

“…There are several three-phase CSRs introduced in most of the literature, including the six-switch CSR [14], three-phase four-wire CSR [15], current doubler CSR [16], matrix-type CSR [17], three-switch CSR [18], swiss-type CSR [19], delta-type CSR [20], split freewheeling diode CSR [21], etc. Another kind of isolated CSR is achieved with a high-frequency transformer [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

A Novel Three-Phase Current Source Rectifier Based on an Asymmetrical Structure to Reduce Stress on Semiconductor Devices

Xie

Wang

et al. 2020

Energies

View full text Add to dashboard Cite

This paper presents a novel three-phase current source rectifier (CSR) for AC/DC step-down voltage conversion to reduce voltage and current stress. The proposed converter features an asymmetrical connection between upper and lower arms compared with conventional CSRs, but has the same number of devices. With the proposed asymmetrical structure and modified space vector pulse width modulation (SVPWM) scheme, half of transistors only need to withstand half of the line-to-line voltage rather than the full line-to-line voltage, and its DC link current can be shared by multiple switches in freewheeling periods. Therefore, it is able to bring about a significant reduction in voltage and current stress, allowing for an improvement in the converter without additional cost. The topological structure, operation principles, and comparative analysis are specifically presented. Finally, an experimental prototype is built up to verify the performance of the proposed converter.

show abstract

“…Moreover, scholars also utilize different filters to suppress the grid-side current harmonics of MC, such as parallel active filter, hybrid filter, etc. [17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Harmonic Analysis and Attenuation Strategy for a Two-Stage Matrix Converter Fed by Dual-Inverter Based on Pulse Barycenter Method

et al. 2022

View full text Add to dashboard Cite

Since the DC-link of the dual-inverter two-stage matrix converter (TSMC) has no energy storage element, its grid-side current waveform is closely related to the load-side condition. The conventional modulation strategy of the dual-inverter TSMC is only the stack of the double inverters, without considering the cooperation between both modulation strategies. Thus, the fluctuations in the grid-side currents synthesized by both load-side currents will be obvious. To solve this problem, this paper analyzes the effect of the current pulse position on the grid-side current waveform quality, and relevant relationship between the pulse position and current harmonics is obtained according to Fourier transform. On this basis, the harmonic attenuation strategy for the dual-inverter TSMC is proposed. In the proposed strategy, the grid-side current harmonic is reduced based on the optimal duty-cycle combination, obtained from the harmonic optimization problem. The simulation and experimental results are provided to verify that the theoretical analysis of grid-side current harmonic content is consistent with the actual condition, and the proposed modulation strategy can effectively reduce the grid-side current harmonic.

show abstract

Reduction of DC Current Ripples by Virtual Space Vector Modulation for Three-Phase AC–DC Matrix Converters

Cited by 4 publications

References 27 publications

Advanced Learning Technique Based on Feature Differences of Moving Intervals for Detecting DC Series Arc Failures

Advanced Learning Technique Based on Feature Differences of Moving Intervals for Detecting DC Series Arc Failures

A Novel Three-Phase Current Source Rectifier Based on an Asymmetrical Structure to Reduce Stress on Semiconductor Devices

Harmonic Analysis and Attenuation Strategy for a Two-Stage Matrix Converter Fed by Dual-Inverter Based on Pulse Barycenter Method

Contact Info

Product

Resources

About