A pitch control system for wind power generation
A technology for control systems and wind turbines, which is applied in the control of wind turbines, wind power generation, wind turbines, etc., and can solve problems such as high cost, low reliability, and poor remote maintenance capabilities
Active Publication Date: 2021-06-29
GUAN HUADIAN TIANREN CONTROL EQUIP CO LTD +1
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- Application Information
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Problems solved by technology
[0004] With the development of the wind power industry, especially the rapid development of offshore wind power, the existing pitch technology has the following problems in large-capacity generator sets: (1) low reliability; (2) high cost; (3) poor remote maintenance capabilities
Method used
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Embodiment Construction
[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings. The drawings and specific embodiments are only used to illustrate the present invention, and are not used to limit the scope of the present invention and claims.
[0024] figure 1 A schematic structural diagram of a pitch control system for wind power generation in a specific embodiment is shown, in which a charging control cabinet 2 and three independent pitch control units A, B, and C are specifically shown. On the one hand, the charging control cabinet 2 charges the supercapacitors of the three pitch control units, on the other hand, it receives commands from the main control of the wind turbine, and sends control commands to the three pitch control units after calculation. The three pitch control units A, B, and C are used to control the pitch operation of the wind turbine to realize the independent action of the blad...
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The invention provides a pitch control system for wind power generation, which includes a charging control cabinet and three parallel pitch control units. The charging control cabinet includes a power part and a control part. The power part is integrated with an anti-surge protector. One end of the power part is connected to the three-phase power line of the main control slip ring of the wind turbine, and the other end outputs four DC power sources, of which three It is respectively connected to the supercapacitors in the three pitch control units to charge the supercapacitors, and the other one is connected to the other three as a backup. The control part receives the command of the main control of the wind turbine and sends the control command to the three pitch control units after calculation. Pitch control unit; three parallel pitch control units control their corresponding permanent magnet synchronous motors independently, receive instructions from the charging control cabinet and execute the pitch operation of the wind turbine according to the instructions, so as to realize the independent action. The control system has high reliability.
Description
technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a pitch control system of a charging control cabinet. Background technique [0002] Wind energy resources are one of the renewable and clean energy sources. my country has abundant wind energy reserves from inland to coastal areas. The installed capacity of wind turbines is getting larger and larger, and small blades are gradually developing into large blades. At present, wind turbines in the wind power industry mostly use electric variable pitch control systems. The pitch control system receives wind master control commands and controls the position of the blade angle to ensure the safe operation of wind turbines. [0003] The electric pitch control system is mainly designed for three axis cabinets. The three axis cabinets have almost the same function and structure. Each axis cabinet is equipped with an independent or integrated charging module of the...
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IPC IPC(8): F03D7/00H02J7/14H02J7/34
CPCF03D7/00H02J7/1423H02J7/345F05B2270/328H02J7/143Y02E10/72
Inventor 卢乐丁宛超张春勇
Owner GUAN HUADIAN TIANREN CONTROL EQUIP CO LTD