Controller of converter of dual-fed wind power generator

A technology for wind turbines and converters, applied in circuit devices, control generators, control systems, etc., can solve problems such as easy failure, difficult parameter matching, lack of network interfaces, etc., to reduce the impact of power grid, data Accurate recording and flexible control
CN101895112AActive Publication Date: 2010-11-24天津瑞源电气有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
天津瑞源电气有限公司
Publication Date
2010-11-24

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Abstract

The invention relates to a controller of a converter of a dual-fed wind power generator, which is formed by connecting a touch display screen, a PLC module, a data acquisition and control module and a network interface module, wherein the touch display screen is connected with the PLC module, the PLC module is connected with one end of the network interface module, the other end of the network interface module is connected with a control and pitch control system of a wind turbine, the PLC module is further connected with the data acquisition and control module, and the data acquisition and control module is simultaneously connected with a rotor side power module and a network side power module. The controller adopts the modular design and can realize the double closed-loop control of a power outer loop and a current inner loop through acquisition, analysis and treatment of various analog signals, digital quantity signals and rotation speed signals, and simultaneously realize the functions of centralized acquisition of data, fault prediction, diagnosis and the like, and has the characteristics of strong anti-interference ability, abundant network interfaces, fast measurement speed, high control precision, friendly man-machine interface and the like.
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Description

technical field

[0001] The invention belongs to the field of wind power generation, in particular to a converter device controller of a doubly-fed wind power generator. Background technique

[0002] At present, the megawatt-scale variable-speed variable-pitch doubly-fed grid-connected wind turbine represents the mainstream direction of the development of domestic wind turbines, and the doubly-fed converter is one of the core components of the megawatt-scale doubly-fed wind turbine. It is an important part to realize the constant voltage and constant frequency grid-connected power generation operation of the doubly-fed asynchronous wind turbine under the condition of large-scale wind speed changes. The controllers of existing high-power double-fed converters mostly use dual-processor or dual-DSP architecture, and the processors are connected through dual-port RAM or serial communication. The driver board composed of discrete components plus IGBT module, the control system an...

Claims

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