The Brushless Doubly-fed Motor Vector Decoupling Control Strategy

BDFM has a wide range of applications in engineering, which not only has the rotor structure, and having synchronous, asynchronous and other operating mode, the application can replace conventional generator can also be used as frequency control motors. This paper discusses the BDFM research background, BDFM specific structure and the operation state of a detailed analysis. Secondly, according to the motor theory, we deduced the structure of the motor rotor speed based on model formulation, and build mathematical models BDFM final dual synchronous speed theoretical derivation.Again to the model for the study, its coordinate system conversion, which is decomposed into power winding and control winding two-phase coordinate system, to control the voltage windings for the control variable motor speed and power regulation, none Research related to brush doubly-fed motor control strategy to provide specific theoretical basis.Finally, to further discuss BDFM related vector control technology, the main principle of mathematical research motor vector control, as well as the associated vector conversion method, while the structure of the vector control system will be described, to facilitate the practical follow-up control scheme making.In order to simplify the analysis of the mathematical model, this article will power winding and control winding respectively based on synchronous coordinate system, the combination of field-oriented control system for the two parts of the rotor windings are directed. Paper application Simulink simulation control system, we can see this control method is suitable for BDFM, and can improve the control performance at the same time dynamic control of motor torque by simulation results.