Preprint Article Version 1 This version not peer reviewed

Power Limit for Crosswind Kite Systems

Version 1 : Received: 3 February 2018 / Approved: 5 February 2018 / Online: 5 February 2018 (13:50:33 CET)

How to cite: Kheiri, M..; Bourgault, F..; Saberi Nasrabad, V. Power Limit for Crosswind Kite Systems. Preprints 2018, 2018020035 (doi: 10.20944/preprints201802.0035.v1). Kheiri, M..; Bourgault, F..; Saberi Nasrabad, V. Power Limit for Crosswind Kite Systems. Preprints 2018, 2018020035 (doi: 10.20944/preprints201802.0035.v1).

Abstract

This paper generalizes the actuator disc theory to the application of crosswind kite power systems. For simplicity, it is assumed that the kite sweeps an annulus in the air, perpendicular to the wind direction (i.e. straight downwind configuration with tether parallel to the wind). It is further assumed that the wind flow has a uniform distribution. Expressions for power harvested by the kite is obtained, where the effect of the kite on slowing down the wind (i.e. the induction factor) is taken into account. It is shown that although the induction factor may be small for a crosswind kite (of the order of a few percentage points), neglecting it in calculations may result in noticeable overestimation of the amount of power harvestable by a crosswind kite system.

Subject Areas

Airborne wind energy, crosswind kite, induction factor, actuator disc, lift mode, drag mode, pumping kite, on-board generation

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