Domestic Journals Kyun Seon Ji, Sung Tak Jou, and Kyo-Beum Lee, "Performance Improvement of DC-link Control for a Dynamic Voltage Restorer with Power Feedforward Compensation," The Transactions of the Korean Institute of Electrical Engineers, vol. 64, no. 9, pp. 1297–1305, Sep. 2015.
2015
본문
This paper proposes a power feedforward technique for the performance improvement of DC-link voltage control in the dynamic
voltage restorer (DVR). The DC-link Voltage is able to be unstable for an instant owing to any change in the load and voltage sag.
The distortion of the DC-link voltage leads to the negative influence on the performance of DVR. To mitigate the distortion of the
DC-link voltage, the power feedforward component is calculated by the load power and the grid voltage, and then it is added to the
reference current of the conventional DC-link voltage controller. By including output power feedforward component on the DC-link
controller, the DC-link voltage can settle down more quickly than when the conventional DC-link voltage controller applied. The
proposed technique was validated through the simulation and experimental results.
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