Research on Control Method of DC Voltage Based on Power Feedforward

Xin Du; Ling Zhu

doi:10.4028/www.scientific.net/AMM.380-384.3065

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 380-384Research on Control Method of DC Voltage Based on...

Research on Control Method of DC Voltage Based on Power Feedforward

Abstract:

DC-bus voltage is affected by fluctuations of load and grid impact, threating the safe operation of the system. According to the instantaneous active power balance, a power feedforward control strategy was proposed to reduce the DC voltage fluctuations. In this strategy, the load active power was directly fed-forward to the grid-side given instantaneous active power node through a constructed load state feedforward channel, which avoided the slower process of indirect power adjustment through outer voltage loop. So, the system response speed was greatly accelerated, the DC-bus voltage fluctuation was inhibited effectively, and the dynamic performance of the system had improved. Test results demonstrate the effectiveness of the proposed strategy.

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Periodical:

Applied Mechanics and Materials (Volumes 380-384)

Pages:

3065-3068

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.380-384.3065

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Online since:

August 2013

Authors:

Xin Du, Ling Zhu

Keywords:

Dc Bus Voltage, Feed Forward, Instantaneous Active Power, PWM Converter

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