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Stator winding self-coupling cascade doubly-fed generator and its working method

A doubly-fed generator, stator winding technology, applied in the shape/style/structure of winding conductors, suppressing electromagnetic interference, connecting with control/drive circuits, etc. structure, cost reduction effect

Active Publication Date: 2018-06-08
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present invention discloses a stator winding self-coupling cascade doubly-fed generator and its working method. The stator winding is an AC winding with two outlets for each phase, and has the functions of a main winding and a feedback winding. Solve the problem of slot insulation and slot full rate, the slip power transmitted to the rotor side uses the principle of auto-couple transformer, part of it is transmitted through the rotating magnetic field induction, and part of it is directly conducted through the auxiliary outlet terminal, which has little influence on the magnetic field

Method used

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  • Stator winding self-coupling cascade doubly-fed generator and its working method
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Embodiment Construction

[0026] The present invention is described in detail below in conjunction with accompanying drawing:

[0027] Such as figure 1 As shown, the stator winding self-coupling cascade doubly-fed generator includes a base, a stator 3 and a rotor 4, a shaft is installed in the base, and the rotor 4 is composed of a rotor core and a rotor three-phase winding 8, so The rotor 4 is installed on the shaft, the stator 3 includes a stator core and a stator winding 5, and the stator 3 is installed in the base;

[0028] The stator winding 5 adopts a self-coupling winding structure. The stator winding 5 has two outlets, the main outlet 6 and the auxiliary outlet 7. The stator winding 5 can output a high voltage at the main outlet 6 and output a low voltage through the auxiliary outlet 7. It is connected to the three-phase winding 8 of the rotor through a converter.

[0029] Such as figure 2 As shown, three outlet terminals are symmetrically drawn from a certain position of the stator three-p...

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Abstract

The invention discloses a stator winding self-coupling cascade doubly-fed generator and a work method thereof. The stator winding self-coupling cascade doubly-fed generator includes a generator base, a stator and a rotor. A shaft is installed in the generator base. The rotor is formed by a rotor iron core and a rotor winding. The rotor is installed on the shaft. The stator includes a stator iron core and a stator winding. The stator is installed in the generator base. The stator winding and the rotor winding have magnetic relation and electric relation. The stator winding self-coupling cascade doubly-fed generator has a unique structure, simplifies the wind generator system structure, and reduces the cost.

Description

technical field [0001] The invention relates to a generator, in particular to a stator winding self-coupling cascaded doubly-fed generator and a working method thereof. Background technique [0002] With the rapid growth of wind turbine unit capacity and offshore wind turbine installed capacity, high-voltage wind turbine system has become an inevitable choice because of its high efficiency and low cost. [0003] The doubly-fed generator commonly used at present is limited by the voltage of the inverter, and generally uses a combination of low-voltage power generation or high-voltage power generation and a step-down transformer. [0004] The inner-fed asynchronous generator combines the generator and the transformer to generate high-voltage power, but the two sets of stator windings are placed in the same slot, the winding insulation is complicated, the slot fullness rate is high, and the slip power is transmitted through the magnetic field, which has a great impact on the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/04H02K3/28H02K11/02H02K11/33
CPCH02K3/04H02K3/28H02K11/02
Inventor 王秀和杨玉波
Owner SHANDONG UNIV
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