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Real-time monitoring method of low-power wind power converter during networking

A wind power converter and electric converter technology, which is applied in wind power generation, motor control, synchronous generator control, etc., can solve the problem that there is no adjustable real-time monitoring method for low-power wind power converter parameters, and no MODBUS RTU protocol is given. communication interface technical solutions and other issues

Active Publication Date: 2016-02-17
ZHEJIANG UNIV
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  • 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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  • Real-time monitoring method of low-power wind power converter during networking
  • Real-time monitoring method of low-power wind power converter during networking
  • Real-time monitoring method of low-power wind power converter during networking

Examples

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Embodiment

[0051] Example: such as figure 1 As shown, it is a schematic diagram of the structure of a single 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 driving 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 real-time monitoring method of low-power wind power converters during networking. By means of the method, the running states of multiple low-power wind power converters can be monitored in real time, failures can be conveniently found and removed in time, all control microcomputer modules can be controlled through an upper computer, the converters do not need to be detached when instructions are regulated and issued, and operation is facilitated for users. During actual networking of low-power wind turbine generators, usually various types of permanent magnet synchronous power generators exist. By means of the method, one low-power wind power converter can adapt to various types of permanent magnet synchronous power generators, and cost and networking difficulty are decreased. The method is improved on the basis of the MODBUS RTU protocol, the start and the stop of messages are quite conveniently judged, interrupt processing can be conveniently conducted through the control microcomputer modules and the upper computer which are in communication through serial ports, and the wind power converters are quite conveniently networked and connected with an industrial personal computer, a PLC and other devices due to the characteristics and wide application range of the protocol itself.

Description

technical field [0001] The invention relates to the technical field of wind power converters, in particular to a real-time monitoring method for low-power wind power converters in networking. 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 civilian use often ...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J13/00H02P9/14H02P101/15H02P103/20
CPCH02J3/386H02J13/0017H02P9/14H02P2207/05Y02E10/76
Inventor 沈燚明卢琴芬陈轶姚艺华
Owner ZHEJIANG UNIV
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