Braking equipment for generator

A technology of braking equipment and generators, applied in the direction of motor generator control, motor/generator/inverter limiter, electrical components, etc.

Active Publication Date: 2013-05-01
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, one aspect of the present invention is to provide a generator braking device capable of solving the braking problem after the power converter of the wind turbine generating set loses the ability to control the electromagnetic torque of the generator

Method used

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  • Braking equipment for generator
  • Braking equipment for generator

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Embodiment Construction

[0022] Embodiments of the invention will now be described in detail, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0023] figure 1 is a schematic diagram illustrating a wind power generator system including a generator braking device according to an embodiment of the present invention.

[0024] refer to figure 1 , the wind power generator system may include a rotor 1 , a permanent magnet generator 2 , a braking system 4 , a power converter 8 , a controller 11 , a transformer 12 and a grid 13 . As mentioned above, the impeller 1 can convert wind energy into mechanical energy, the permanent magnet generator 2 can convert mechanical energy into original electrical energy, the power converter 8 can convert the original electrical energy into electrical energy that meets the quality requireme...

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Abstract

The invention discloses braking equipment for a generator, which comprises a controller and a braking system, wherein the controller is used for monitoring the working state of a power converter for transforming the original electrical energy output by the generator into the electrical energy meeting the quality requirements of power transmission and distribution for an electrical network. The braking equipment for the generator is characterized in that when the power converter normally works, the braking system is controlled by the controller to cut off a braking resistor; and when the power converter is abnormal, the braking system is controlled by the controller to switch in the braking resistor and disconnect the power converter and the generator.

Description

technical field [0001] The invention relates to a generator braking device, more specifically, to a generator braking device capable of effectively braking after a power converter loses the ability to control the electromagnetic torque of the generator. Background technique [0002] The variable-speed variable-pitch direct-drive wind turbine converts wind energy into mechanical energy through wind rotors, converts mechanical energy into raw electrical energy through generators (for example, permanent magnet generators), and converts raw electrical energy into grid-compliant power transmission and distribution through power converters. Quality required electrical energy. Power converters include generator converters and grid converters. In addition, the generator converter can also control the electromagnetic torque of the generator to balance the mechanical torque of the wind wheel while completing the conversion of electric energy, and realize the variable speed control of...

Claims

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Application Information

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IPC IPC(8): H02P3/00
Inventor 李健王相明赵祥夏静
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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