Automatic speed-regulation permanent magnet wind-power generator with interior ventilation perpendicular shaft

Abstract

The invention discloses an automatic speed-regulation permanent magnet wind-power generator with an interior ventilation perpendicular shaft, which belongs to the technical field of new energy and comprises the following main components: end coves 1 and 13, a dynamic disk 2, a permanent magnet 3, a bearing 4, a main shaft 5, a static disk 10 and a control box 17. The invention is characterized inthat a ventilating and cooling device and an automatic speed-regulation system are arranged in a generator, the single-chip microcomputer technology is utilized to overcome the problem of internal heat dissipation of the generator during operation and difficult power generation at low speed as well as low power generation efficiency and unstable output at high speed, and thus the safe operation of the generator is ensured; at the same time, the new design idea of permanent magnet superposition and the new method for making the main shaft by large caliber steel tubes are utilized, and the invention greatly reduces the weight and volume of the generator and decreases manufacturing cost, and has high power generation efficiency, stable output power, safety and reliability, long service life and wide application.

Description

technical field [0001] The invention relates to an automatic speed-regulating internally ventilated vertical-axis permanent magnet wind power generator, which belongs to the technical field of new energy sources, and in particular to a generator in wind power generation equipment. Background technique [0002] In the prior art, the rotor main shaft of the vertical axis permanent magnet wind turbine is generally made of round steel solid, supported by the bearing in the end cover, assembled with the stator housing in a closed manner, and dissipated heat by the generator housing. Due to the overheating of the internal temperature rise of the generator, the power generation capacity is restricted and the permanent magnet is gradually demagnetized and aged. [0003] Second, in real life, the wind speed in nature is always changing. Since the wind energy is proportional to the cube of the wind speed, when the wind speed increases from 13 m / s to 25 m / s, the wind energy increases b...

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Problems solved by technology

[0002] In the prior art, for vertical axis permanent magnet wind turbines, the rotor main shaft is generally made of round steel, supported by bearings in the end cover, assembled with the stator housing in a closed manner, and dissipated heat by the generator housing. Due to the overheating of the internal temperature rise of the generator, it restricts the power generation capacity and causes the permanent magnet to gradually demagnetize and age.

[0003] Second, in real life, the wind speed in nature is always changing. Since the wind energy is proportional to the cube of the wind speed, when the wind speed increases from 13 m / s to 25 m / s, the wind energy increases by more than 7 times. Many, if the rated wind speed of the generator design is high, the efficiency will be reduced or no electricity will be generated at low wind speeds. If the rated wind speed of the generator design is low, the volume will be large and the cost will be high, but the efficiency will decrease at high wind speeds

In response to the above problems, at present, many inventors have almost come up with ideas on wind rotors and blades, such as using gearboxes, reducers, hydraulic pressure or lever devices to keep the speed of the wind rotor constant, which also increases the cost and complexity of wind turbines , resulting in new defects and deficiencies

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