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Intelligent grid-connected device of direct-drive wind power generation system

A wind power generation system, direct-drive technology, applied in wind power generation, circuit devices, electrical components, etc., can solve the problem that wind power cannot be consumed locally

Inactive Publication Date: 2016-07-20
SHANGHAI DIANJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The former usually results in large-scale wind power generation that cannot be accommodated locally, and needs to be transported to the load center through the transmission network for a larger range of consumption.

Method used

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  • Intelligent grid-connected device of direct-drive wind power generation system
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  • Intelligent grid-connected device of direct-drive wind power generation system

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Embodiment Construction

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 2 As shown, the present invention provides an intelligent grid-connected device for a direct-drive wind power generation system, including:

[0024] DSP chip;

[0025] A bus voltage detection element, an isolation drive circuit, a three-phase grid current detection element and peripheral circuits connected with the DSP chip. Specifically, such as figure 1 As shown, the present invention mainly designs the intelligent grid-connected device of the permanent magnet direct-drive wind power generation system from two aspects of hardware and software. The hardware of the intelligent grid-connected device of the direct-drive wind power generation system mainly includes bus voltage detection components, isolation...

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Abstract

The invention provides an intelligent grid-connected device of a direct-drive wind power generation system.The intelligent grid-connected device comprises a DSP chip, a bus voltage detecting element, an isolated driving circuit, a three-phase power grid current detecting element and a peripheral circuit, wherein bus voltage detecting element, the isolated driving circuit, the three-phase power grid current detecting element and the peripheral circuit are connected with the DSP chip.A control strategy of a wind power grid-connected inverter is a decisive factor of development of grid-connected inverting technology, a current detection circuit and a feedback circuit are not introduced into a traditional control strategy, so that the control mode is slow in dynamic response and sensitive to change of system parameters, a current impacting phenomenon exists, and own development is limited.Therefore, problems of the grid-connected device in the traditional power control strategy are solved based on a direct power control strategy of a virtual flux linkage.

Description

technical field [0001] The invention relates to the field of wind power generation, and designs an intelligent grid-connected device for a direct-drive wind power generation system. Background technique [0002] With the large-scale development and utilization of wind energy, some new problems and challenges have emerged in the development of wind power. The prominent manifestations are the problem of wind power grid connection and consumption and the reliability of wind turbine operation. From the perspective of the characteristics of wind power generation itself, it is mainly caused by the unbalanced geographical distribution and time distribution of wind energy resources and power demand, as well as the random intermittent characteristics of wind energy resources. The former usually results in large-scale wind power generation that cannot be accommodated locally, and needs to be transported to the load center through the transmission network for long-distance transmissio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/386Y02E10/76
Inventor 孙丛丛王致杰王庆泽王鸿李战辉
Owner SHANGHAI DIANJI UNIV
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