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Grid-connected Control System of Brushless Doubly-fed Motor

A doubly-fed motor and control system technology, applied in the direction of single-grid parallel feeding arrangement, etc., can solve the problems of power winding current impact, power winding cannot quickly and accurately track the grid side voltage, etc.

Active Publication Date: 2019-02-12
EAST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the grid-connection process of the traditional brushless doubly-fed motor, the replication and phase of the output voltage of the power winding cannot quickly and accurately track the grid-side voltage, so that in the switching process before and after grid-connection, the power winding of the brushless doubly-fed motor has Current shock

Method used

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  • Grid-connected Control System of Brushless Doubly-fed Motor
  • Grid-connected Control System of Brushless Doubly-fed Motor
  • Grid-connected Control System of Brushless Doubly-fed Motor

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Embodiment Construction

[0021]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] figure 1 It is a structural block diagram of the grid-connected control system of the brushless doubly-fed motor in this embodiment. The grid-connected control system of the brushless doubly-fed motor is used for grid-connected control of the brushless doubly-fed motor 10 . The brushless doubly-fed motor 10 is connected to the grid 30 through a circuit breaker 20 . The brushless double-fed motor 10 includes a power winding and a control winding. see figure 1 , the grid-connected control system includes an amplitude control module 110, a phase control module 120, a PWM modulator 130, an in...

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Abstract

The invention relates to a grid-connected control system for a brushless doubly-fed machine. The brushless doubly-fed machine comprises a power winding and a control winding. The grid-connected control system comprises an amplitude control module, a phase control module, a PWM modulator, an inverter and a control module. According to the above grid-connected control system for the brushless doubly-fed machine, the output voltage amplitudes and the phases before and after grid connection of the brushless doubly-fed machine can be ensured to track the power grid-side voltage amplitude and the phase, current impacts in the power winding before and after grid-connected switching can be successfully suppressed, and smooth transition of the switching process is realized.

Description

technical field [0001] The invention relates to the technical field of brushless double-fed motors, in particular to a grid-connected control system of brushless double-fed motors. Background technique [0002] During the grid-connection process of the traditional brushless doubly-fed motor, the replication and phase of the output voltage of the power winding cannot quickly and accurately track the grid-side voltage, so that in the switching process before and after grid-connection, the power winding of the brushless doubly-fed motor has current shock. Contents of the invention [0003] Based on this, it is necessary to provide a grid-connected control system of the brushless doubly-fed motor that does not generate a current impact during the grid-connected switching process. [0004] A grid-connected control system of a brushless double-fed motor, the brushless double-fed motor includes a power winding and a control winding, the grid-connected control system includes an ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/42H02J3/44
CPCH02J3/42H02J3/44
Inventor 郭伟孔铭徐海波王雪帆
Owner EAST GRP CO LTD
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