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A parameter-adjustable real-time monitoring method suitable for small-power wind power converters

A wind power converter, real-time monitoring technology, applied in wind power generation, motor generator control, electromechanical brake control, etc., can solve the problem that there is no MODBUS RTU protocol communication interface technical solution, and there is no adjustable parameter of small power wind power converter Real-time monitoring methods and other issues, to achieve the effect of convenient start and end, convenient interruption processing, and convenient operation

Active Publication Date: 2017-11-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing civil low-power wind power converters, there is no communication interface technical solution based on the MODBUS RTU protocol, and there is no related real-time monitoring method for small-power wind power converters with adjustable parameters

Method used

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  • A parameter-adjustable real-time monitoring method suitable for small-power wind power converters
  • A parameter-adjustable real-time monitoring method suitable for small-power wind power converters
  • A parameter-adjustable real-time monitoring method suitable for small-power wind power converters

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Embodiment

[0049] Example: such as figure 1 As shown, it is a schematic diagram of the overall structure of a low-power wind power converter, which includes a three-phase PWM rectifier module, a three-phase PWM inverter module, a drive microcomputer module, a control microcomputer module, a communication interface and a power supply module; The alternating current is rectified into direct current through the three-phase PWM rectifier module, and then converted into the alternating current voltage with the same voltage level and frequency as the power grid through the three-phase PWM inverter module, and the energy is transmitted to the power grid; the drive microcomputer module is used for output pulse width modulation Signal (PWM), control the three-phase PWM rectifier module and three-phase PWM inverter module; the control microcomputer module is used to control the drive microcomputer module and the corresponding relay, collect real-time parameters and send the real-time parameters to ...

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Abstract

The invention discloses a parameter-adjustable real time monitoring method for a small-power wind power converter. Through three control strategies for the wind power converter, the key parameters of the system for the wind power converter can be obtained; the key parameters of the system can be adjusted through a host computer; therefore, the small-power wind power converter can be adapted with a plurality of permanent magnetism synchronous generators with different models. The parameter-adjustable real time monitoring method for a small-power wind power converter can realize control of a microcomputer module by the host computer, and has no need for performing dismounting operation for the converter during the debugging process or when a command is issued, thus being convenient for the user to operate; and the parameter-adjustable real time monitoring method for a small-power wind power converter can realize real-time monitoring of the operation state of a wind power generator and the wind power converter simultaneously, thus being convenient for discovering and clearing the fault timely. The parameter-adjustable real time monitoring method for a small-power wind power converter is based on an MODBUS RTU protocol and modifies the MODBUS RTU protocol so as to easily determine initiation and end of a message, and is convenient for controlling the microcomputer module to perform interrupt processing and connecting with an industrial control computer, a PLC and other devices; and the characteristics of the protocol are also convenient for realizing monitoring during the networking process of a plurality of civil small-power wind power devices.

Description

technical field [0001] The invention relates to the technical field of wind power converters, in particular to a parameter-adjustable real-time monitoring method suitable for small-power wind power converters. Background technique [0002] In recent years, wind power generation has been vigorously developed as a new energy technology with broad application prospects. At the same time, as one of the key technologies of wind power generation, wind power converters are receiving more and more attention because they can realize variable-speed constant-frequency power generation in a wide wind speed range, improve operating efficiency, and improve wind energy utilization. With the development of distributed energy and micro-grid technology, low-power wind power converters (generally a few kilowatts) and their wind turbines for civilian use have begun to be used more and more. [0003] It should be pointed out that the low-power wind power converters and their wind turbines for c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J13/00H02P21/12H02P101/15
CPCY02E10/76
Inventor 沈燚明卢琴芬陈轶姚艺华
Owner ZHEJIANG UNIV
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