A two-switch buck-boost PFC rectifier with automatic AC power decoupling capability

Qi, Wenlong; Li, Sinan; Siew-Chong-Tan,; Hui, S. Y. Ron

doi:10.1109/ecce.2016.7854798

Cited by 3 publications

(3 citation statements)

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“…The majority of the applications are for DC links, i.e., active DC links. Active DC links are achieved by switching devices and significantly reduced passive components (e.g., capacitors, inductors, or both) [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] . Its performance depends largely on the active switching circuits and less on the dielectric materials and manufacturing constraints as the passive capacitors.…”

Section: Advanced Active DC Links-two-terminal Active Capacitor 41 Overview Of Active Dc Linksmentioning

confidence: 99%

“…From the capacitor end-user perspective, the effort of overcoming the challenges can be divided into three categories which are reviewed in this paper: ①Electrothermal-lifetime modeling to support model-based sizing of capacitors [10][11][12][13][14][15] ; ② Multi-objective optimization of passive capacitor banks in terms of cost, size, efficiency, and reliability [16][17][18][19] ; ③New capacitor concepts based on active switching circuits [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] . The first effort is an analysis tool to predict the reliability performance of the capacitive DC links.…”

Section: Introductionmentioning

confidence: 99%

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Capacitive DC links in power electronic systems-reliability and circuit design

Wang

Wang²

2018

Chin. J. Electr. Eng.

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Capacitive DC links are an important part in voltage source power electronic converters, which contribute to cost, size and failure rate on a considerable scale. With more and more stringent constraints brought by industrial applications, the capacitive DC links encounter reliability aspect challenges. This paper presents a review on the reliability design and improvement of capacitive DC links from three aspects: 1) Quantitative reliability prediction for DC-link capacitors; 2) Reliabilityoriented design of passive DC-link capacitor banks; and 3) Advanced active DC links to exceed the limits of passive DC-link capacitors. Key solutions for each aspect are highlighted and discussed with case studies. This review serves to provide a picture of state-of-the-art research on the reliability design and improvement of capacitive DC links, highlight the key milestones in this area, and identify the corresponding challenges and future research directions.

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Section: Advanced Active DC Links-two-terminal Active Capacitor 41 Overview Of Active Dc Linksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Capacitive DC links in power electronic systems-reliability and circuit design

Wang

Wang²

2018

Chin. J. Electr. Eng.

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“…In order to improve the efficiency of power decoupling, The literature [21,22,23,24] proposed a closed-loop feedback control method of DC bus voltage, which had a good effect in suppressing bus voltage ripple and improving decoupling accuracy. Literature [25] proposed a half-bridge decoupling circuit based on DC split capacitor as shown in Figure 1, which had several advantages of parallel decoupling circuit.…”

Section: Introductionmentioning

confidence: 99%

Discordant splitting capacitance drives system bus voltage pulsation suppression

Zhu

Zhang

Xia

2022

IEICE Electron. Express

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This paper analyzes the power decoupling performance of the mismatched split-capacitor half-bridge circuit, and reveals the mechanism of fundamental harmonic generation in the circuit through the mathematical model of the decoupling circuit established. In order to solve this problem, firstly, this paper proposes a control strategy of introducing DC bias coefficient on the basis of instantaneous voltage control of split capacitor C 1 . Secondly, using instantaneous voltage of capacitor C 1 as control quantity can better realize voltage tracking control effect, with fast response speed and simple control. Finally, the effectiveness of this control strategy is verified by experiments.

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