Wind power generation pitch-change control system
A technology for control systems and wind turbines, which is applied in the control of wind turbines, wind power generation, engine control, etc., and can solve problems such as poor remote maintenance capabilities, low reliability, and high costs
Active Publication Date: 2019-08-02
GUAN HUADIAN TIANREN CONTROL EQUIP CO LTD +1
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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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[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 wind power generation pitch-change control system. The wind power generation pitch-change control system comprises a charging control cabinet and three pitch-change control units connected in parallel, wherein the charging control cabinet comprises a power portion and a control portion, the power portion is integrated with an anti-surge protector, one end of the power portion is connected with a three-phase power line of a main control slip ring of a wind generating set, four direct-current power supplies is output from the other end of the power portion, three of thedirect-current power supplies are connected with super capacitors in the three pitch-change control units correspondingly so as to be used for charging the super capacitors, the other direct-current power supply is used as a backup to be connected with other three direct-current power supplies, the control portion is used for receiving a main control instruction of the wind generating set and issuing control commands to the three pitch-change control units after operation, the three pitch-change control units connected in parallel are used for mutually independently controlling permanent magnet synchronous motors corresponding to the three pitch-change control units, receiving instructions from the charging control cabinet correspondingly and executing pitch-change operation of the wind generating set according to the instructions, so that the independent actions of blades is realized. The control system is high in 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...
Claims
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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