Axial dual-stator brushless double-fed motor

A double-fed motor and double-stator technology, applied in electrical components, electromechanical devices, etc., can solve the problems of low utilization rate of public rotors, special squirrel-cage rotor structure, and large system occupied space, so as to reduce ineffective length, compact structure, The effect of high space utilization

Inactive Publication Date: 2012-07-04
SOUTHEAST UNIV
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  • Abstract
  • Description
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Problems solved by technology

The axial cascaded brushless doubly-fed motor is formed by axially cascading two asynchronous motors, one is a power machine and the other is a control machine. Due to the existence of the winding end, the two axially cascaded stators There must be a certain distance between them, the utilization rate of the common rotor is low, the system occupies a large space, and the power density is low
Shared stator core type brushless d

Method used

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  • Axial dual-stator brushless double-fed motor
  • Axial dual-stator brushless double-fed motor
  • Axial dual-stator brushless double-fed motor

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Embodiment Construction

[0032] figure 1 For the dual-stator brushless doubly-fed wind power generation system, the motor includes a bidirectional rectification inverter 4, an end cover 7, a rotating shaft 9, a rotor 3 arranged on the rotating shaft 9, and left symmetrically arranged on both axial sides of the rotor 3. Stator 1 and Right Stator 2. The left stator 1 has a set of left stator windings 12 with 2p poles, and the right stator 2 has a set of right stator windings 22 with 2q poles, where p and q are positive integers respectively. The left stator winding 12 is the main power winding and is directly connected to the grid or the main power supply; the right stator winding 22 is the control winding and is connected to the grid or an external circuit through the bidirectional power converter 4 . The above-mentioned 2p stator winding 12 and the 2q stator winding are all multi-phase symmetrical stator windings. The rotor 3 is mechanically connected to the fan wheel 6 directly or through the gear...

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Abstract

The invention discloses an axial dual-stator brushless double-fed motor. The motor comprises a bidirectional rectification inverter, an end cover, a rotating shaft and a rotor arranged on the rotating shaft, as well as a left stator and a right stator symmetrically arranged on two axial sides of the rotor, wherein the rotating shaft and the end cover are connected through a bearing; and air gaps are reserved between the two stators and the rotor. The axial dual-stator brushless double-fed motor has excellent adaptability, can be designed into not only a variable-speed constant-frequency generator but also a constant-frequency adjustable-speed motor, has a simple and compact structure, is high in power density, and has high reliability and low operation and maintenance costs due to omission of a brush slip ring.

Description

technical field [0001] The invention belongs to the technical field of motors and their control, and relates to a double-fed variable-speed constant-frequency generator / motor. Background technique [0002] As the whole society continues to pay attention to energy and environmental issues, the development and utilization of renewable energy is showing a trend of accelerated development. Wind energy exists widely on the earth and is currently one of the most mature renewable energy sources in our hands. A wind turbine is a device that converts mechanical energy into electrical energy in a wind power generation system, and its performance directly affects the quality and conversion efficiency of the output electrical energy. [0003] At present, the generators used in the world's popular high-power wind power generation systems mainly include the following types: [0004] 1. Double-fed asynchronous wind turbine [0005] In the doubly-fed asynchronous wind power generation sy...

Claims

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Application Information

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IPC IPC(8): H02K16/04
Inventor 程明韩鹏花为张建忠
Owner SOUTHEAST UNIV
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