Pitch loading cabinet and control system

Abstract

The invention discloses a variable pitch loading cabinet and a control system, belonging to the field of wind power variable pitch testing, comprising a controller, an AFE rectification feedback device, an inverter, a loading motor and an electrical main circuit; The structure of one incoming line + two power supplies + busbar in parallel, the power supply of the pitch system and the loading system are connected in parallel, and the loading system is supplied by the electric power from the tow motor to the pitch system for use; the controller is connected with the AFE rectifier feedback device, The AFE rectifier feedback device is connected to the inverter, and the inverter is connected to the loading motor. The invention realizes energy feedback, and has the advantages of energy saving, simple structure, low cost, mobility, small size, and the ability to realize torque command programming simulation and the like.

Description

technical field [0001] The invention relates to the technical field of wind power generation variable pitch testing, and more particularly, to a variable pitch loading cabinet and a control system. Background technique [0002] The pitch control system is a set of control devices in the hub of the wind turbine, which mainly plays the role of adjusting the input power of the wind rotor and the aerodynamic brake. After design, it needs to be loaded to test its performance. During the test, the motor of the pitch system is in the electric state, the motor of the drag loading system is running, and the motor of the loading system is in the state of generating electricity. [0003] The pitch loading cabinet in the prior art adopts the scheme of driver + motor + braking resistor and supplies power independently, and has the following technical problems: [0004] 1) The electricity generated by the driven motor can only be consumed on the braking resistor, so that the existing lo...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a pitch-variable loading cabinet and a control system, which solve the problems of large power consumption, complex structure, high cost, immobility, large volume, and torque in the existing loading cabinet. The problem of non-programmable simulation of commands can be realized by energy feedback, which has the advantages of energy saving, simple structure, low cost, mobility, small size, and torque command programming simulation can be realized.

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