Wide-speed variable-speed motor with excitation direct-control alternating current-direct current shaft self decoupling

Abstract

The invention discloses a wide-speed variable-speed motor with excitation direct-control alternating current-direct current shaft self decoupling. The variable-speed motor is composed of a stator, a rotor, and a permanent magnet. The stator consists of a stator iron core and armature windings; the stator iron core is designed to have an opening groove structure; and the armature windings are arranged in the opening grooves of the stator iron core. The armature windings provide power through an inverter and generate alternating currents with direct-current biases; the armature windings are arranged in a distributed centralized winding manner and each winding winds around stator teeth. The rotor includes a rotor iron core. According to the motor disclosed by the invention, the winding structure is simplified; the direct-current winding and the alternating-current winding of the existing hybrid excitation motor are combined into one set of windings, so that the winding difficulty can be reduced, the space, occupied by the windings, inside the stator can be saved. And reliability and control flexibility of the motor can be improved. Moreover, speed regulation of a motor in a wide rotating speed range can be realized. 本发明公开了一种励磁直接控制交直轴自解耦的宽转速调速电机，其特征在于，包括定子、转子和永磁体，其中，定子包括定子铁心和电枢绕组，定子铁心设计为开口槽，电枢绕组设置在定子铁心的开口槽内，电枢绕组通过逆变器供电，产生带有直流偏置的交流电流，电枢绕组采用分布式集中绕组排列，每个绕组线圈缠绕在定子齿上；转子包括转子铁心。通过本发明提供的电机，简化了绕组结构，将现有混合励磁电机的直流绕组和交流绕组合并为一套绕组，降低了绕线难度，节省了绕组所占定子内空间，提高了电机的可靠性和控制灵活性，并能实现电机的宽转速范围调速。