Digital Control of an AC/DC Converter using the Power Balance Control Technique with Average Output Voltage Measurement

Pisit Wisutmetheekorn; Viboon Chunkag

Digital Control of an AC/DC Converter using the Power Balance Control Technique with Average Output Voltage Measurement

Pisit Wisutmetheekorn

Viboon Chunkag

Vol. 12, No. 1, pp. 88-97, Jan. 2012

10.6113/JPE.2012.12.1.88

AC/DC converter

Digital control

Power factor correction

PDF

Abstract

This paper presents a method for the digital control of a high power factor AC/DC converter employing the power balance control technique to achieve a fast response of the output voltage control. To avoid the effects of an output voltage ripple in the voltage control loop, the average output voltage is sampled and used as a feedback signal for the output voltage controller. The proposed control technique was verified by simulations using MATLAB/Simulink and its implementation was realized by a dsPIC30F4011 digital signal processor to control a CUK topology AC/DC converter with a 48V output voltage and a 250 W output power. The experimental results agree with the simulation results. The proposed control technique achieves a fast transient response with a lower line current distortion than is achieved when using a conventional proportional-integral controller and the power balance control technique with the conventional sampling method.

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Cite this article

[IEEE Style]

P. Wisutmetheekorn and V. Chunkag, "Digital Control of an AC/DC Converter using the Power Balance Control Technique with Average Output Voltage Measurement," Journal of Power Electronics, vol. 12, no. 1, pp. 88-97, 2012. DOI: 10.6113/JPE.2012.12.1.88.

[ACM Style]

Pisit Wisutmetheekorn and Viboon Chunkag. 2012. Digital Control of an AC/DC Converter using the Power Balance Control Technique with Average Output Voltage Measurement. Journal of Power Electronics, 12, 1, (2012), 88-97. DOI: 10.6113/JPE.2012.12.1.88.