A Fault-Tolerant Direct Controlled PMSG Drive for Wind Energy Conversion Systems

作者：Freire Nuno M A^*; Marques Cardoso Antonio J

来源：IEEE Transactions on Industrial Electronics, 2014, 61(2): 821-834.

DOI：10.1109/TIE.2013.2251734

• Direct power control (DPC)
• direct torque control (DTC)
• fault diagnosis
• fault-tolerant systems
• permanent-magnet machines
• power-switch open-circuit faults
• semiconductor device reliability
• wind power generation

Reliability and availability levels are crucial aspects for assessing the economic viability of wind energy conversion systems. Therefore, fault-tolerant systems can make a valuable contribution. This paper presents a fault-tolerant permanent-magnet synchronous generator (PMSG) drive employing new direct control techniques. For postfault operation, a direct power control (DPC) of a four-switch three-phase converter and a direct torque control of a three-switch three-phase rectifier are proposed. Switching tables are theoretically formulated for both control techniques. Two alternative tables are obtained for the DPC of the grid-side converter, permitting the choice between implementation simplicity and enhanced performance. All necessary reconfigurations to handle open-circuit faults are triggered by a reliable fault diagnostic method, which has a low computational demand, without requiring additional measurements. Experimental results are presented, demonstrating the feasibility of the proposed fault-tolerant PMSG drive.

• 出版日期2014-2