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In this paper, a new control method of ESS for smoothing wind farm output is proposed, in which a PWM based DC-DC converter is not used and ESS is connected directly to the DC bus circuit of wind farm. This system can simplify overall control scheme and improve the efficiency of the wind farm considerably.
Energy storage system (ESS) has been proposed to smoothen the wind generator output fluctuations. However, power converters are required to integrate the ESS to wind turbine generator system (WTGS). This paper proposes a new scheme of ESS connection to WTGS in order to reduce power losses due to power converters.
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