Single-Phase AC–DC Converter With SiC Power Pulsation Buffer for Pulse Load Applications
| Autor: | Qianhong Chen, Zhiliang Zhang, Lei Bai, Xiaoyong Ren, Yu Chen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Electrolytic capacitor
Materials science business.industry 020208 electrical & electronic engineering Electrical engineering Energy Engineering and Power Technology 02 engineering and technology Single-phase electric power Inductor 01 natural sciences Capacitance 010305 fluids & plasmas law.invention Capacitor Film capacitor Hardware_GENERAL law Power electronics 0103 physical sciences Boost converter 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business |
| Zdroj: | IEEE Journal of Emerging and Selected Topics in Power Electronics. 8:517-528 |
| ISSN: | 2168-6785 2168-6777 |
| DOI: | 10.1109/jestpe.2019.2956123 |
| Popis: | Single-phase ac–dc converter for low-frequency pulse load normally requires high-capacitance electrolytic capacitors, which reduces the lifetime and may cause reliability problem. To meet the challenges of voltage ripple, this article introduces a power pulsation buffer (PPB) that smooths the output voltage and provides essential pulse power to the load simultaneously. The proposed PPB is realized by a discontinuous current mode (DCM) bidirectional buck/boost converter with real-time duty-cycle calculation (RDC) and peak voltage control. The proposed control method can relieve the capacitance requirement and achieve good dynamic response. The electrolytic capacitor is replaced with the film capacitor which has better reliability. SiC devices are adopted to further reduce the inductor volume of PPB. The core-less design is also proposed to design an integrated air-core inductor for further volume deduction. To meet the DCM requirement of PPB in various operating conditions, the phase shift between the line voltage and pulse load is taken into account. An electrolytic capacitor-less prototype with 1800-W peak power is built to verify the advantages of the proposed method. |
| Databáze: | OpenAIRE |
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