A doubly-fed wind generator insulation system and its processing method

Abstract

The invention discloses a doubly-fed wind-driven generator insulation system, which comprises a stator core, a rotor core, a stator coil (1) and a rotor coil (6). Insulating plates A (2) are arranged between turns of the straight part of the stator coil (1). The periphery of straight part of the stator coil (1) is sequentially wrapped with a single-side glass cloth reinforcing dry mica tape (3) and an NHN compound material insulating layer (4). Insulating plates B (5) are arranged between turns of the end part of the stator coil (1). The periphery of the end part of the stator coil (1) is wrapped with a single-side glass cloth reinforcing dry mica tape (3). The external part of the rotor coil (6) is sequentially wrapped with a CR (Corona Resisting) polyimide film glass cloth reinforcing dry mica tape (7) and a polyimide film glass cloth reinforcing dry mica tape (8). The invention additionally discloses a manufacturing method for the doubly-fed wind-driven generator insulation system. The doubly-fed wind-driven generator insulation system and the manufacturing method thereof have the beneficial effects that not only can the electric property of the insulation structure be improved, but also the thickness is reduced and the corona resisting performance of the rotor coil is greatly improved; and the insulation structure is reliable, the goal of long-term stable operation can be realized and the production cost is decreased.

Description

technical field [0001] The invention relates to the technical field of motor insulation, in particular to a doubly-fed wind power generator insulation system and a processing method thereof. Background technique [0002] The motor insulation structure is one of the most important components of the motor. The motor insulation structure mainly plays the role of isolating the electromotive force in the motor, making the current flow along the specified direction, and also has the function of fixing the winding; at the same time, the motor insulation structure is also the motor The component with the most concentrated stress and the weakest strength is affected by temperature, electric field, environmental conditions and mechanical stress at the same time. Therefore, the reliability and stability of the motor insulation structure performance is often the key factor that determines the reliability and service life of the motor. [0003] As a clean and renewable energy, wind energ...

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Problems solved by technology

First of all, wind turbines generally operate for a long time in harsh environments, and the working environment is very corrosive to wind turbines. The current motor insulation structure is difficult to withstand high voltage and high temperature for a long time; secondly, the motor insulation The value of the structure is expensive, not only the price of various insulating materials is expensive, but also the manufacturing process of the insulating structure is complicated, the process time is long, and the impact on the manufacturing cost of the motor is obvious

[0004] Foreign motor manufacturers started the research and application of wind turbine VPI insulation technology earlier, but my country's research on wind generators is relatively late. Most domestic manufacturers have imported wind turbine manufacturing technology from abroad, and used imported insulation materials and Impregnation of paint has caused many problems such as high production cost and unfavorable materials for transportation, storage and use.

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