Journal of Power Electronics

  • 제10권3호
  • /
  • Pages.270-276
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  • 2010
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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Identification of DC-Link Capacitance for Single-Phase AC/DC PWM Converters

  • Pu, Xing-Si (Dept. of Electrical Engineering, Yeungnam University) ;
  • Nguyen, Thanh Hai (Dept. of Electrical Engineering, Yeungnam University) ;
  • Lee, Dong-Choon (Dept. of Electrical Engineering, Yeungnam University) ;
  • Lee, Suk-Gyu (Dept. of Electrical Engineering, Yeungnam University)
  • 투고 : 2010.01.06
  • 발행 : 2010.05.20
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초록

In this paper, a capacitance estimation scheme for DC-link capacitors for single-phase AC/DC PWM converters is proposed. Under the no-load condition, a controlled AC current (30[Hz]) is injected into the input side, which then causes AC voltage ripples at the DC output side. Or, a controlled AC voltage can be directly injected into the DC output side. By extracting the AC voltage/current and power components on the DC output side using digital filters, the capacitance value can be calculated, where the recursive least squares (RLS) algorithm is used. The proposed methods can be simply implemented with software only and additional hardware is not required. From the experiment results, a high accuracy estimation of capacitances less than 0.85% has been obtained.

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참고문헌

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피인용 문헌

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  5. Implementation of an Interleaved AC/DC Converter with a High Power Factor vol.12, pp.3, 2012, https://doi.org/10.6113/JPE.2012.12.3.377
  6. Sinusoidal Current Control of Single-Phase PWM Converters under Voltage Source Distortion Using Composite Observer vol.16, pp.5, 2011, https://doi.org/10.6113/TKPE.2011.16.5.466
  7. Reducing the dc-Link Capacitance: A Bridgeless PFC Boost Rectifier That Reduces the Second-Order Power Ripple at the dc Output vol.24, pp.2, 2018, https://doi.org/10.1109/MIAS.2017.2740471