Fault-Tolerant Performance of the Novel Five-Phase Doubly-Fed Induction Generator

Abstract

The article presents the concept of a new design of a multiphase doubly-fed induction generator (DFIG). The innovative design approach is based on the use of a five-phase power supply from the rotor side of generator with a three-phase classic stator power supply. Modern three-phase doubly-fed induction generators are the dominant choice for Wind Energy Conversion Systems (WECS). Solutions of this type are sensitive to the loss of at least one phase of the power supply from the rotor side due to the failure of the rotor side inverter. The proposed design solution in the form of a multi-phase power supply in the rotor circuit is aimed at extending the range of possible failure-free operation of the generator system, and thus reducing system downtime as a result of failure of power electronic systems. The correctness of the adopted conceptual assumptions was confirmed by the results of laboratory tests. The main contribution is to prove that the use of five phase rotor winding significantly improves the overall reliability of the proposed electrical energy generation system.

Induction machine with pole-changing winding for turbomechanisms

“…Currently, scientific research is being conducted to create a double-fed induction machine with a pole-changing winding on the stator [8,9].…”

A dual-stator brushless doubly-fed generator for wind power application

“…Brushless doubly-fed machines (BDFMs) have strengths of high reliability, low maintenance costs and improved low-voltage crossing capability because of the elimination of brushes and slip-ring parts [9][10][11][12][13]. Meanwhile, the BDFMs are suitable for slow running because the number of electric machine pole-pairs is about two times greater than traditional doubly-fed induction machines (DFIMs) under the same armature diameter in [14,15]. Therefore, the BDFMs have attracted a lot of attention in various areas, for instance, the wind power generator in [16], pump in [17], ship in [18], rotary transformer in [19], and electric vehicle [20].…”

A Variable Speed Synchronous Motor Approach for Smart Irrigation using Doubly Fed Induction Motor

“…Recently, DfIM speed control is achieved via different control strategies. the field-oriented control of DfIM based on rotor position sensorless operation has been presented in AlgR, pl and UK research [11], [12], [13]. A single frequency converter is employed in the rotor side while the stator side is directly connected to the grid.…”