Current source back to back converter for wind energy conversion systems

Abdelsalam, I. and Adam, G. P. and Williams, B. W. (2016) Current source back to back converter for wind energy conversion systems. IET Renewable Power Generation. ISSN 1752-1416 (https://doi.org/10.1049/iet-rpg.2016.0177)

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Abstract

This paper proposes a new back-to-back current source converter (BTB-CSC) suitable for mediumvoltage high power wind energy conversion systems (WECS). It employs a dual three-phase permanent magnet synchronous generator and two current source inverters with a phase-shift transformer at the grid side. The proposed BTB-CSC has the following advantages: reduced power circuit and control complexity; low switching losses (zero switching losses at the inverter side); and independent control of active and reactive power. PSCAD/EMTDC simulations are used as to assess the steady-state and dynamic behaviour of the proposed system under different operating conditions. It is shown that the proposed WECS can ride-through ac faults. Experimental results from scaled prototype of the proposed WECS are used to validate the simulations.