Drive chain of a wind power generating set

Abstract

The invention relates to a transmission chain of a wind power generating set, which is characterized in that it includes an integral coaxial speed-up gearbox and an electromagnetic coupler arranged in series, the high-speed shaft of the speed-up gearbox and the electromagnetic coupler The rotor adopts the same rotating shaft. On the rotating shaft, the main body of the speed-increasing gearbox and the squirrel-cage rotor of the electromagnetic coupler are arranged sequentially from the low-speed end to the high-speed end of the wind power generating set. The side is connected to one end of the main body of the electromagnetic coupler, and the other end of the main body of the electromagnetic coupler is connected to the output shaft of the transmission chain of the wind power generating set; on the output shaft, bearings, The slip ring of the electromagnetic coupler, the shaft cooling fan, the stator core and the winding of the electromagnetic coupler. The invention can realize the characteristics of relatively compact structure and lighter weight. The invention can be widely used in the field of wind power generation research.

Description

technical field [0001] The invention relates to a transmission chain, in particular to a transmission chain of a wind power generating set for integrating a speed-increasing gearbox and a speed-regulating front end of an electromagnetic coupler. Background technique [0002] At present, as the fastest-growing clean energy power generation method with the most prospects for large-scale development, wind power generation has become an important measure for many countries to adjust energy structure and alleviate environmental pollution. In the energy conversion transmission chain of wind power generation: the wind turbine is responsible for converting the captured wind energy into mechanical energy; the generator set is responsible for converting mechanical energy into electrical energy. The transmission chain of the wind turbine and its speed regulation control mode are the core of the whole system, which directly affects the performance, efficiency and power quality of the wh...

AI Technical Summary

Problems solved by technology

However, the ability of this type of unit to deal with grid faults is obviously insufficient in the actual operation process: in the case of grid voltage drop, the transient voltage and current in the rotor circuit of the doubly-fed unit will increase significantly; the rapid increase of current will cause the converter DC side voltage rises, overcurrent and overvoltage will pose a threat to the fragile power electronic devices of the converter, forcing the converter to stop running

However, the current separation layout used in this transmission chain has the problems of lengthiness and complex mechanism, and the separation layout is also easy to cause installation errors during actual operation, resulting in unpredictable additional loads, causing vibration or wear and other failures

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