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

A technology with an orthogonal axis and a wide rotation speed, which is applied in the field of wide-speed variable-speed motors, can solve the problems of difficult field weakening control of permanent magnet motors and complex winding structures of hybrid excitation motors, achieve high power density and efficiency, improve reliability, and simplify The effect of the winding structure

Active Publication Date: 2017-05-24
THE HONG KONG POLYTECHNIC UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a wide-speed speed-adjustable motor with excitation direct control AC-D axis self-decoupling, so as to im

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

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[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] figure 1 It is a schematic structural diagram of a wide-speed speed-regulating motor 100 with direct excitation control of the AC-DC shaft self-decoupling according to the first embodiment of the present invention. Such as figure 1 As shown, the electric machine 100 is a rotating electric machine, and includes a stator composed of a stator core 110 and an armature winding 120 and a rotor composed of a rotor core 130 and a rotor per...

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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.

Description

technical field [0001] The invention relates to the field of brushless synchronous motors, in particular to a wide-speed speed-regulating motor whose excitation directly controls the AC-D axis self-decoupling. Background technique [0002] With the development of new energy technology, motors have been widely used as a clean energy drive equipment, especially in the fields of electric vehicle drive and new energy power generation. Compared with traditional electric excitation motors, permanent magnet synchronous motors have higher power density and efficiency, and are more suitable for high-torque direct drive applications. In addition, due to the abundance of rare earth materials in my country, it also provides natural resource advantages for the development of permanent magnet synchronous motors. [0003] The excitation magnetic field of the traditional permanent magnet synchronous motor is mainly generated by the permanent magnet, which is not very adjustable, and when t...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K3/28H02K1/27H02K1/17H02K21/00H02K21/22H02K41/02
Inventor 牛双霞王青松傅为农
Owner THE HONG KONG POLYTECHNIC UNIV
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