A Seamless Transfer Algorithm Based on Frequency Detection with Feedforward Control Method in Distributed Generation System

Kiryong Kim; Dongsul Shin; Jaecheol Lee; Jong-Pil Lee; Dong-Wook Yoo; Hee-Je Kim

A Seamless Transfer Algorithm Based on Frequency Detection with Feedforward Control Method in Distributed Generation System

Vol. 15, No. 4, pp. 1066-1073, Jul. 2015

10.6113/JPE.2015.15.4.1066

Feedforward control

Power conditioning system

Seamless transfer

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Abstract

This paper proposes a control strategy based on the frequency detection method, comprising a current control and a feed-forward voltage control loop, is proposed for grid-interactive power conditioning systems (PCS). For continuous provision of power to critical loads, PCS should be able to check grid outages instantaneously. Hence, proposed in the present paper are a frequency detection method for detecting abnormal grid conditions and a controller, which consists of a current controller and a feedforward voltage controller, for different operation modes. The frequency detection method can detect abnormal grid conditions accurately and quickly. The controller which has current and voltage control loops rapidly helps in load voltage regulation when grid fault occurs by changing reference and control modes. The proposed seamless transfer control strategy is confirmed by experimental results.

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Cite this article

[IEEE Style]

K. Kim, D. Shin, J. Lee, J. Lee, D. Yoo, H. Kim, "A Seamless Transfer Algorithm Based on Frequency Detection with Feedforward Control Method in Distributed Generation System," Journal of Power Electronics, vol. 15, no. 4, pp. 1066-1073, 2015. DOI: 10.6113/JPE.2015.15.4.1066.

[ACM Style]

Kiryong Kim, Dongsul Shin, Jaecheol Lee, Jong-Pil Lee, Dong-Wook Yoo, and Hee-Je Kim. 2015. A Seamless Transfer Algorithm Based on Frequency Detection with Feedforward Control Method in Distributed Generation System. Journal of Power Electronics, 15, 4, (2015), 1066-1073. DOI: 10.6113/JPE.2015.15.4.1066.