The study of a wound brushless doubly fed machine based on a rotor with the reluctance effect

Abstract

The brushless doubly fed machine is a new type of variable-speed, constant-frequency AC generator. In this paper, we combine the winding type rotor with a reluctance rotor and propose a new type of magnetoresistive effect of the wound rotor type. First, the three-dimensional finite element model is established using finite element analysis software, and the structure and principle of the model are introduced; second, based on the principle of sine winding, a new type of winding with a higher fundamental winding coefficient and a lower harmonic content is proposed, and its magnetic motive force is analyzed; third, a related analysis of its performance is conducted using finite element analysis software; fourth, based on the special characteristics of the rotor, the influence of the relative positions of the inner salient pole axis and the winding axis on the performance of the new type of brushless doubly fed motor is investigated; fifth, the ripple torque at different locations is analyzed; and finally, the correctness of the simulation is verified by experiments on a prototype.

Design and Analysis of Dual‐Stator Brushless Doubly‐Fed Generator for Wind Turbine

“…A hybrid rotor having the reluctance effect and wirewound structure was introduced in Ref. [12]. This rotor structure maintains the flexibility of the wound rotor and guides the magnetic flux like the reluctance rotor to improve the ability of modulation.…”

Design and experimental analysis of a wound brushless doubly Fed machine based on a rotor with the reluctance effect

“…The BDFM stator winding contains power winding (PW) and control winding (CW), the two set of windings have different pole numbers. Its rotor adopts special structure, such as special-cagetype rotor, reluctance rotor, and wound rotor [5][6][7][8][9]. The specialcage-type rotor has low cost and easy to process, it has great starting and asynchronous running performance.…”