Indirect boost matrix converter and low‐voltage generator for direct drive wind turbines. Issue 1 (18th January 2018)

• Record Type: Journal Article
• Authors: Singh, Akanksha; Mirafzal, Behrooz
• Is Part Of: Journal of engineering. Volume 2018:Issue 1(2018)
• Page Start: 10
• Page End: 16
• Publication Date: 2018-01-18
• Subjects: invertors -- synchronous generators -- permanent magnet generators -- wind turbines -- matrix convertors; generator‐converter topology -- direct drive wind generators -- line‐to‐line voltage -- boost CSI -- permanent magnet synchronous generator -- synchronous inductance -- dc‐link inductor -- dc‐bus capacitors -- boost current source inverter -- grid‐side converter -- power electronics interface -- DDWT -- direct drive wind turbines -- low‐voltage generator -- indirect boost matrix converter; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2017.0290
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : Here, a new topology for direct drive wind turbines (DDWTs) with a new power electronics interface and a low‐voltage generator is presented. In the presented power electronics interface, the grid‐side converter is replaced by a boost current source inverter (CSI) which eliminates the required dc‐bus capacitors, resulting in an increase in the system lifetime. The inherently required dc‐link inductor for this topology is eliminated by utilising the synchronous inductance of the permanent magnet synchronous generator. The control technique used for the developed DDWT is described here. The boost CSI enables conversion of a low dc voltage to a higher line‐to‐line voltage creating an indirect boost matrix converter, and thus, enabling the implementation of a low‐voltage generator. This further enables a reduction in the number poles required in direct drive wind generators. The feasibility of the proposed generator‐converter topology for DDWTs and its controllers are verified through simulations and experimental results on a laboratory scale 1.5 kW, 240 V set‐up.