Electric stepless speed change double power flow wind-power generator group

A wind turbine, continuously variable speed technology, applied in wind turbine combinations, wind turbines, wind power generation, etc., can solve the problems that wind energy cannot be fully utilized, increase the difficulty of generator design and manufacturing, and achieve high wind energy utilization efficiency, The effect of simplifying the structure and improving reliability

Active Publication Date: 2007-08-15
SOUTHEAST UNIV
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Problems solved by technology

However, since the direct drive generator works at a low speed of tens of revolutions per minute, in order to ensure that its output voltage is within the normal frequency range (30-80Hz), the generator needs to adopt a larger diameter of the stator and rotor and more poles. Logarithmic, adding difficulty to the design and manufacture of generators
On the other hand, wind energy has randomness, fluctuating from big to small. I

Method used

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  • Electric stepless speed change double power flow wind-power generator group

Examples

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Example Embodiment

[0016] Figure 1 is a schematic diagram of the composition of the generator set, which is mainly composed of five parts: wind turbine 1, electric continuously variable transmission (in the dashed frame) 2, generator 3, second power converter 4, first power converter 5 ; Among them, the electric continuously variable transmission 2 is the key component of the system. It is essentially two concentrically arranged motors. This part includes the stator 2.1, the outer rotor 2.2, the inner rotor 2.3, and the slip ring 2.4, etc., placed on the inner rotor Multi-phase (3-phase in the figure) windings are connected to the first power converter 5 via slip rings and brushes; a multi-phase winding (3-phase in the figure) is also placed on the stator and connected to the second power converter 4 ; The outer rotor structure can be a cage rotor, a permanent magnet rotor or other types according to the type of motor used; the transmission has two shafts, the left shaft in Figure 1 is the input sha...

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Abstract

The invention relates to an electric stepless speed-variable dual-power wind generator, wherein the electric stepless speed changer (2) comprises a stator (2.1), an outer rotor (2.2), an inner rotor (2.3), and a sliding ring (2.4). The wind turbine (1) via an input axle (6) is connected with the rotor (2.3), the sliding ring (2.4) is mounted on the axle (6), the circumference of the rotor (2.3) is disposed with the rotor (2.2), the circumference of the rotor (2.2) is disposed with the stator (2.1) which via an output axle (7) is connected to a generator (3), the rotor (2.3) is disposed with a multi-phase winding to connect a first power converter (5) via the sliding ring (2.4) and an electric brush, the stator (2.1) is arranged with a multi-phase winding and connected with a second power converter (4), the first and second power converters (4, 5) are connected with one direct-current power.

Description

technical field [0001] The invention is a function that can steplessly adjust the rotating speed of a generator so that the rotating speed of the wind-driven generator does not change with the change of the wind speed, and realizes the output of variable wind speed and constant frequency, and belongs to the technical field of wind-driven generator manufacturing. 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 technologies that people have mastered. . A wind turbine is a device that converts mechanical energy into electrical energy in a wind power generation system. It is a tool that connects the prime mover with the output electrical energy. It not only directly affects the quality and efficiency of the output electric...

Claims

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Application Information

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IPC IPC(8): F03D9/00H02K51/00F03D9/25
CPCY02E10/723Y02E10/725Y02E70/30Y02E10/72
Inventor 程明花为
Owner SOUTHEAST UNIV
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