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Transverse flow phase stage type brushless double-fed induction motor

A doubly-fed induction motor, transverse magnetic flux technology, applied in electrical components, electromechanical devices, electric components, etc., can solve the problems of magnetic flux leakage and electromagnetic interference, difficult to use directly, reduce magnetic flux leakage, facilitate heat dissipation, and design freedom great effect

Inactive Publication Date: 2014-05-07
王新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Second, the flow direction of the magnetic flux changes from radial to lateral, and the plane where the magnetic force lines are located is turned by 90°, which makes it difficult to directly use the silicon steel sheets that have been widely used in radial flux motors in transverse flux motors
[0021]Third, in radial flux induction motors, including BDFM, there are winding ends outside the core slots at the front and rear ends of the stator or rotor, which will Generate magnetic flux leakage and electromagnetic interference; in the existing transverse flux motor, since the cores of the stator or rotor are discrete, there are also winding conductors exposed outside the core winding slots at the discrete core intervals, which will also generate leakage Magnetic and Electromagnetic Interference

Method used

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  • Transverse flow phase stage type brushless double-fed induction motor
  • Transverse flow phase stage type brushless double-fed induction motor
  • Transverse flow phase stage type brushless double-fed induction motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Embodiment 1, the power is equal to the number of phases of the control stator and rotor, which is 3 phases, the number of pole pairs of the power stator and rotor=3, and the number of pole pairs of the control stator and rotor=1. figure 1 , shows the 3-phase power and control stator and rotor electromagnetic space structure of embodiment 1. Embodiment 1 The specific implementation method can be carried out in the following steps:

[0069] 1. Manufacture parts

[0070] 1) Make the iron core

[0071] There are four types of cores: power stator phase ring core, power rotor phase ring core, control stator phase ring core, and control rotor phase ring core. The four cores have similar shapes and manufacturing methods. The main materials for making the core are silicon steel sheet and binder. The technical parameters and quality requirements of silicon steel sheets are the same as those of conventional induction motors. The adhesive is recommended to use inorganic insul...

Embodiment 2

[0106] Embodiment 2, the wind power generator, can be applied to horizontal axis or vertical axis wind power generators. Embodiment 2 adopts a horizontal axis wind turbine, the diameter of the blade circle of the wind turbine is 8M, and the rated speed is n r =200r / min. The rated output power of the generator is designed to be 100KW, the generator power and the number of phases of the control stator and rotor are 3 phases, the number of pole pairs of the power stator and rotor = the number of pole pairs of the control stator and rotor = 18.

[0107] The basic implementation mode of embodiment 2 is similar to embodiment 1, and the Figure 13-Figure 24 with Example 1 Figure 1-Figure 12 Similar, no more details.

[0108] The following mainly illustrates that embodiment 2 is applied to the design features of wind-driven generators:

[0109] Feature 1: It is easy to design an electromagnetic system with multi-pole pairs to realize the slow-speed wind turbine directly driving t...

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PUM

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Abstract

The invention discloses a transverse flow phase stage type brushless double-fed induction motor and aims to increase power and torque densities and achieve brushless double-fed speed regulation or frequency modulation control through direct drive. The motor comprises power stator phase ring bodies (101), power rotor phase ring bodies (102), control stator phase ring bodies (103), and control rotor phase ring bodies (104), a circumferential array iron core (1) is installed in two parts of ring body boxes made of non-magnetic steel materials, corresponding windings (2) penetrate an iron core U-shaped groove, the power stator phase ring body (101) and the power rotor phase ring body (102) of each phase and the control stator phase ring body (103) and the control rotor phase ring body (104) of each phase are subjected to isolation air gap concentric loop and assembled in a phase stage mode, phase windings (2) of each inphase power rotor phase ring body (102) and control rotor phase ring body (104) are respectively serially connected to form a closed loop. The transverse flow phase stage type brushless double-fed induction motor has universality and is particularly applicable to fields of wind driven generators and the like.

Description

technical field [0001] The invention relates to an AC brushless double-fed motor, in particular to a brushless double-fed induction motor with a transverse magnetic flux phase segment structure. Background technique [0002] With the development of high-power electric transmission technology in the fields of wind power, hydropower, fans and pumps, mining machinery, ship power, etc., people have low speed, high power, high torque density, direct drive, brushless double-fed speed regulation or The requirements for frequency-regulated motors are becoming more and more urgent. Most of these motors belong to induction motors, among which wind power generators are a hot spot for development and are representative products of this type of equipment. [0003] Taking the wind turbine as an example, in the double-fed induction generator DFIG (double-fed induction generator) system, the slow-rotating wind turbine is connected with the fast-rotating generator rotor through the gear box...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/00H02K15/02H02K5/04H02K9/06
Inventor 王新
Owner 王新